Dr Shakuntala Misra National Rehabilitation University Tender

Control Trainer with Servo Interface Panel DC Position Servomechanism Demonstration SALIENT FEATURES Learn how an Analog as well as Digital PID works. Facility to monitor behavior of the controller output (Un) & process variable (MV) either on PC screen or on CRO. Settable time constants. P4/XP or latest version window based PID controller (DDC) software package with P, PI & PID control, Ratio & cascade control, three operating modes, Online graph drawing & data acquisition modes (SCADA). Should learn about different processes using simulated building blocks as well as real life processes using replaceable experiment panels/processes & built in square / triangle / sin function generator as disturbance. Graph printing facility for laboratory journal entries. Aesthetically designed injection molded electronic desk (master unit) carrying useful experiment resources like Power supplies, DPMs, Computer Interface, Analog PID controller with central slot to hold various replaceable experiment panels / processes. Connection through sturdy 4mm Banana sockets & Patch cords, Students workbook & Instructor's Guide provided. Useful for Post Graduate projects & research purpose. Basic Resources on Top board Built in power supply DC supply +12V,500mA. 1phase sine reference for cosine firing 30Vpp max. 17Vdc, 500mA unregulated for driving pulse X'mer Variable DC power supply : 7 to 14V/3A Display A) DPM - 2Nos. i) For Temp. upto 1000C & intensity in Lux (2000) ii) For speed 2000 rpm & voltage upto 20V. B) Analog Meter - 2Nos. i) Centre zero for display of process error (+9V) ii) For MV/SP (0-2.5V) Operating voltage Switch selectable 220-240Vac, ±10%, 50Hz, 75VA PC (WIN7/8/10) based PID controller Online monitoring / Data acquisition / PID Software : on Installable (CD) works under XP, WIN7/8/10 PC with parallel port / USB needed. Operating modes a) Simulator Mode Tests data already stored in files (*.txt) & Drawing graph for all P,PI,PD & PID modes. b) Process Monitoring Mode Drawing graphs of analog data presented at CH 0 & CH of Computer Interface. Cursors for X & Y axis for measurement & online graphs savings for reproduction 1 c) PID controller Mode PID controller with parameters like Integral Time Ti (0.01-64000), Sampling Time Ts (0.1- 99.9), Derivative Time Td (0.1-99.9), Proportional Band Pb(1-999), Derivative Gain Kd(1-999), Set Value Rn (0- 99.9), PID output Upper Limit Uh(0-99.9), PID output Lower Limit Ul (0- 99.9). Facility to set units for output viz. Percentage (%), oC, RPM, Voltage(V), mm, LPH, kg/cm2, si/cm, degree. Supports experiments with advance process control scheme viz; Ratio, Cascade, feed forward with user selectable Aux PID, Ratio station & programmable FF transfer function calculator, selective & split control strategies, Multi DPM Screen. Computer Interface Adapter Optoisolated Adaptor to prevent damage to PC parallel port (25 pin LPT) due to wrong connections. Interfaces through 25 pin M to F cable 1mtr Length. PC/WINXP/7/8/10 not in scope of supply. 4 ADC channels : 0 to 2.5V full scale. 1 DAC channel : O/P 2.5 V FS. V to I Function block : Input : 0-2.5Vdc O/p: 0-20 or 4-20mA, in 100E load Max USB IO module to interface 25 pin D connector on CIA panel to USB PC port enclosed in 25 Pin D shell using Type A to mini B cable. V to PWM function block : I/P -0-2.5V, O/P-1KHz PWM O/P ±9V. Analog PID (APID) controller with built in low freq. function generator Controller selection P,PI,PD,PID with slide switch Parameter settings : Integral Time Ti (0.5-25Sec) : Derivative Time Td (0-2Sec) : Proportional Band Pb (5- 200%) : Set point (-9V- +9V) Operating modes : Fast (X 100/10mSec) for oscilloscope, Slow ( X 0.1/1Sec) for PC interface. 2 No. Level shifter converting process O/p (+9V) to 0-2.5V for PC interface & Actuator panel Test points for Process Error, Set Point (Rn), Measured Value (Cn), Controller output (Un). Built in function generator O/p waveform selectable sine, triangular & square. O/p freq. range from 0.016Hz to 166Hz, 4 steps & fine control pot. Variable amplitude control 0 to +9V. Servo Interface panel Control Interface circuit for AC & DC servo motor, signal conditioning circuit for speed sensor to output 0 - 2.5V dc (2500RPM) with speed direction. Level shifter 0 - 2.5V to + 9V (2nos). Hystersis, Dead band & Relay control circuit (2term & 3 term), process block for 2Nos. of 1st order lag / integral + transport lag, error & gain block for process simulation. Should have following real life process i) DC servo position Control PMDC motor 12Vdc, 40W, ND RPM 2000RPM with gear box (Ratio 30:1) Loading:. Servo amplifier with built in 12V / 3A Power Supply. Sensor: Photo reflective speed sensor with dir detects using 2 nos. of photodiodes. Servo pot as position feedback, position, speed, cascade control. List of Experiments PID tuning by Ziegler Nichols Motor Process parameter study torque speed Dynamics measurements & transfer function determination. Close loop position control using 2/3 step controller. Close loop using 2/3 step controller with simulated processes. Open loop speed control of DC servo motor process III. Speed/Velocity control of DC motor Close loop control with analog PID Close loop control with digital PID Position control of DC motor Cascade control of speed & position feedback

DC Motor Coupled to DC Motor Trainer (To Obtain a Frequency of a DC Shunt Machine using Swinburne’s Test) Salient Features • Facilitates easy & safe wiring by students due to use of 4mm sturdy shrouded banana patch cords & 1 shrouded socket arrangements. • All machines are mounted on finely painted sturdy base frame with easy machine interchangeability Use of gear coupling facilitates screw less coupling. • With due emphasis on student safety machines operate upto 300W power levels &upto 1500 RPM, without compromising didactic use Able to draw all graphs. • Trunnion mounted DC Integrated machine is used as Dynamometer for loading other machines (Motors / generators both); unlike magnetic powder brake or eddy current brake which can load only coupled Motors & not generators, with facility to measure shaft power using electronic torque / speed measurement • Set of Students Workbook & Instructors Guide. Motor Specifications DC integrated motor coupled to DC integrated motor setup (Motor-Generator setup): 1) DC Integrated motor with following specs: Voltage: Varm = 180V, Vfield = 180V, Capacity: 300W/2 pole/ 1500RPM/6 terminals, Rotor construction: Standard communicator / brush arrangement with laminated stack, brought out on 2 terminals, Stator construction: Separately excited field winding with laminated solid yoke 2 pole & series winding brought out on 4 terminals, Frame/mounting: 100 frame, chassis mounted, 19mm shaft dia, with easily swappable gear coupling. 2) DC Integrated motor with following specs: Voltage: Varm = 180V, Vfield = 180V, Capacity: 300W/2 pole/ 1500RPM/6 terminals, Rotor construction: Standard commutator / brush arrangement with laminated stack, brought out on 2 terminals, Stator construction: Separately excited field winding with laminated solid yoke 2 pole & series winding brought out on 4 terminals, Frame/mounting: 100 frame, chassis mounted, 19mm shaft dia, trunnion mounted m/c for use as dynamometer with torque & speed sensors. Technical Specifications Aluminum profile Sturdy Modular Flat (4x2) panel (table top) system, carrying various high voltage components housed in plastic enclosures (panel) to minimise shock possibility. Instrumentation Power supply cum Multichannel DPM panel (a) +/-12 V, 500 mA, (b) +5V, 300mA, (c) Unregulated 17V dc/750 mA (d) line synchronizing signal, (e) 13V / 3 Amp. (f) Multi channel DPM for digital display of torque, speed etc.SCR Actuator (variable DC) cum sensor signal conditioning panel •Full bridge SCR based 0V-195V / 3 Amp cosine firing with linear charateristics. • Supports signal conditioning circuit for speed, torque in kg to give output 0-2.5Vdc (FS). • 2 Nos. of these supplies required for DC Armature, DC motor field & AC generator excitation. DC voltmeter & DC ammeter panel a) DC voltmeter (0-300V), b) DC Ammeter (0-5A) with polarity protection diode c) Field failure relay to control Armature supply. Resistor Load Panel DC Resistors = 750E / 600E / 300E / 212E / 162E / 125E / 112E/100E/400W / 6 taps+OFF+ separate 60E tap for DC series Gen. List of Experiments 1) DC motor:- Speed torque curve & efficiency of i) Shunt motor ii) DC series motor, iii) Separately excited DC motor, iv) DC compound motor. 2) DC generator: i) Output volt-amp characteristics of DC shunt generator. ii)Efficiency of DC shunt generator iii) Output volt-amp characteristics of DC separately excited generator. iv) Efficiency of DC separately excited generator. v) Output volt-amp characteristics of D C series generator.

Transformer Trainer Salient Features: • Facilitates study of transformer operation, determine its equivalent circuit, use of tertiary winding to suppress harmonics etc. • Facilitates easy & safe wiring by students due to 4mm sturdy shrouded banana patch cords & shrouded socket arrangement for high voltage circuits. 1 • Each of following standalone Electrical trainers may need a set of associated panels which are mounted in a light weight sturdy aluminium flat demo panel system. • Each panel has ABS molded plastic sturdy enclosure, & colorful screw less overlays showing circuit diagram & its connection tag numbers for easy understanding & connections. • Set of Instructor Guide & Student Workbook. Technical Specifications Aluminum profile Sturdy Modular Flat Panel system, carrying various high voltage components housed in plastic enclosures (panel) to minimize shock possibility. Input 3 phase DOL Starter panel • 4 pole MCB of 415 V/4A .• DOL 9A Contactor with 230V / 50 Hz / 11VA COIL . • Bimetallic thermal O/L relay with range 1.4A - 2.3A for 300VA or 3A -5A for 1KVA/3kVA. 3 Phase Bidirectional power cum Energy meter panel x 3 nos. • Bidirectional Multifunction Meter • 3 Phase 3/4 wire, 415V CT Input 5A • LCD/LED display, Aux supply 230V, 45-65 Hz, 5W • V.I., Hz, Pf, KVA, KW,KWH • Modbus RTU RS 485 (optional) FWD-OFF-REV switch panel • FWD/REV, 3 pole 3 way switch with centre OFF, 6A/440V. 1 phase AC Input supply panel • 1 phase MCBs of 4A/1.6A - 2nos. • Bulb Load. AC voltmeter panel • Voltage range : 500V. • 1 pole 4 way switch to select line voltage for three phase Dual range AC ammeter panel • Current range:2A/6A selectable . • 1 pole 7 way switch to select phase current for three phase Milliohm (V-I method) / Rect/ CAP Load Panel • Transformer : 230V/14V/3A. • DC Voltmeter : ( 0 –10Vdc). • DC Ammeter : ( 0 –10A). • Diode bridge rectifier with Rectifying capacitor Resistive Load • AC Resistors 10K/5K/3.5K/2.5K/2K/1.5K/OFF (6 taps+1 OFF) 200W x 3 phase • DC Resistors 750E/600E/300E/212E/162E/ 125E/112E/100E/400W /8 taps + OFF + separate 60E tap for DC series Gen. Lamp Load • 230V/100W X3 bulbs with individual ON/OFF using 6A toggle. Parameters : • VA rating : 300VA • X mer type: 1 Phase/ 3 Phase • Construction : Double wound iron core EL STEP DOWN xmer/ Iron core strip lamination type step down Delta primary / Star secondary design. • Primary :3 Nos. Isolated primaries 0-415/0.24A at 50Hz brought out on 3 x 4 sockets • Secondary : 3 Nos. Isolated windings groups main 110V/0.5A, zigzag 110V/0.5A, Tertiary 220V/0.25A brought out on 4 x 3 x 3 sockets. • Accessories: 3 Phase / 3 Amp. Variac (table top) List of experiments : 1. Study of Manufacturing Quality Tests. 2. Study of Insulation resistance test. 3. Study of Turns ratio test 4. Study of Polarity test. 5. Study of Performance tests. 6. Study of Open circuit test 7. Scott connection : Using 2 nos. of 1 phase Transformer 8. Study of Load regulation test. 9. Study of Back to back test (sumpner test) 10. Study of Winding temperature rise test. 11. Measurement of winding resistance by DC V–I method. 12. Study of effect of type of load on transformer output waveform 13. Study of Parallel operation of single-phase transformers 14. Study of Scott connection for 3phase to 2 phase conversion 15. Three phase transformers - basic configurations – their effect on capacity utilization regulation. 16. Study of Phasor Groups in 3 Phase Transformer connections 17. Study of Phasor Group1 connections in 3 phase Transformer. 18. Study of Phasor Group2 connections in 3 phase Transformer. 19. Study of Phasor Group3 connections in 3 phase Transformer. 20. Study of Phasor Group4 connections in 3 phase Transformer. 21. Study of using Tertiary winding on 3 phase transformers for suppressing harmonics. 22. Study of Load regulation, efficiency & Temp. rise test on 3 phase Transformers 23. Study of Manufacturing Quality Tests on 3 phase transformers 24. Study of Short circuit test 25. Determination of zero sequence reactance of 3 phase transformer. 26. Determination of equivalent circuit of 3 phase transformer 27. Self & mutual inductance measurement of 1 phase transformer 28. Determination of equivalent circuit of 3 phase transformer.

1 Phase AC Induction Motor Trainer FEATURES: • Facilitates easy & safe wiring by students due to use of 4mm sturdy shrouded banana patch cords & shrouded socket arrangements. • Machines should be mounted on finely painted sturdy base frame • With due emphasis on student safety machines should operate upto 300W power levels & upto 1500 RPM, without compromising didactic use Able to draw all graphs. • Break pulley arrangement for variable loading of motor should be provided. MOTOR SPECIFICATIONS 1Ph AC Integrated motor Voltage: 230VAC, 50Hz, Capacity: 300W/4 pole/ 1500RPM/ 10 terminals, Rotor construction: Diecast squirrel cage Rotor, Stator construction: Two windings should be brought out on 4 terminals for main & auxiliary, these will be used to configure different motors split phase, CSCR, CSIR, Frame/mounting: 100 frame, chassis mounted, 19 mm shaft dia. Loading arrangement: Friction break pulley (60.5mm dia) for loading arrangement with 20Kg spring balance for torque measurement. Speed Measurement: Using hand held tachometer. CONTROL PANEL SPECIFICATIONS A] Aluminum profile sturdy flat panel (table top) system, carrying various high voltage components housed in plastic enclosures (panel) to minimize shock possibility. 1 Ph. Motor, Alternator & Sync. Motor Panel • 1 ph. MCBs of 4A/1.6A 1 each. • Bulb Load. Integrated AC 1 phase multifunction measurement panel • Should Consist of 1 nos of (96X96mm) Digital meter for 1 Measures V, I, PF (0.2 lag - unity 0.2 lead), W, VA, VAR, Hz etc.) • Current specs for 1 meter = 5A. • Auxiliary supply = 170-250VAC 3 Phase wound Rotor & Sync. Motor panel • Rotor resistors of 30E/5A with 3 taps of 0E, 15E, 21E, 30E (each 3 nos.) • Rotor resistor selector switch, 3 pole 6 Way 6A/440 V. • DC Rotor excitation over current Circuit Breaker (3Amp) Phase Shift Lock Rotor Mechanism [PSLR] : I) Mounting Method: By mounting PSLR mechanism on C bracket, using 4 nuts & bolts, it can be directly inserted on to the shaft of diameter 19mm of 3Phase AC machine & to screw the C bracket securely to U shaped open slots of chassis. II) Block Rotor Test : Above mechanism is mounted on chassis as shown &coupled to 3 phase AC induction squirrel cage motor (0.5HP) to carry out block rotor test. Here the turning wheel or knob of 1 PSLR mechanism has no role to play. Following List Of Experiments Should Be Performed With The Trainer : 1) Study of Speed-Torque Characteristics of 1 Phase induction motor (Split phase type). 2) Study of Efficiency & Input power factor of 1 Phase induction motor (Split phase type) for various loading conditions. 3) Study of Speed-Torque Characteristics of 1 Phase Induction Motor (Capacitor Start Type) 4) Study of Efficiency & Input Power factor of 1 Phase induction motor (Capacitor Start Type) for various loading conditions. 5) Study of Speed -Torque Characteristics of 1 Phase Induction Motor (Capacitor Start-Run Type). 6) Study of Efficiency & Input power factor of 1 Phase induction motor (Capacitor Start-Run Type) for various loading conditions. 7) Study NO LOAD TEST&BLOCKED ROTOR TESTon 1 Phase induction motor.

DC Motor Coupled To 3 Ph AC Motor Trainer SALIENT FEATURES • Facilitates easy & safe wiring by students due to use of 4mm sturdy shrouded banana patch cords & shrouded socket arrangements. • All machines are mounted on finely painted sturdy base frame with easy machine interchangeability Use of gear coupling facilitates screw less coupling. • With due emphasis on student safety machines operate upto 300W power levels &upto 1500 RPM, without compromising didactic use Able to draw all graphs. • Trunnion mounted DC Integrated machine is used as Dynamometer for loading other machines (Motors / generators both); unlike magnetic powder brake or eddy current brake which can load only coupled Motors & not generators, with facility to measure shaft power using electronic torque / speed measurement • Set of Students Workbook & Instructors Guide. Motor Specifications 3 phase AC integrated motor coupled to DC integrated motor setup (Motor-Generator setup): 1) 3 phase AC Integrated motor with following specs: Voltage: 415VAC, 50Hz, Capacity: 300W/4 pole/ 1500RPM, Rotor construction: Star connected, four terminals including star point brought out on 4 slip rings mounted on shaft, Stator construction: Six terminal are brought out to start the machine using stardelta starter, Frame/mounting: 100 frame, chassis mounted, 19mm shaft dia with easily swappable gear coupling. 2) DC Integrated motor with following specs: Voltage: Varm = 180V, Vfield = 180V, Capacity: 300W/2 pole/ 1500RPM/6 terminals, Rotor construction: Standard commutator / brush arrangement with laminated stack, brought out on 2 terminals, Stator construction: Separately excited field winding with laminated solid yoke 2 pole & series winding brought out on 4 terminals, Frame/mounting: 100 frame, chassis mounted, 19mm shaft dia, trunnion mounted m/c for use as dynamometer with torque & speed sensors. Technical Specifications Aluminum profile Sturdy Modular Flat (5x4) panel (table top) system, carrying various high voltage components housed in plastic enclosures (panel) to minimise shock possibility. Input 3 phase DOL Starter panel • 4 pole MCB of 415 V/4A . • DOL 9A Contactor with 230V / 50 Hz / 11VA Coil . • Bimetallic tharmal O/L relay with range 1.4A - 2.3A . 1 Phase Motor, Alternator & Sync. Motor Panel • 1 MCBs of 4A/1.6A 1 each. • 2no 2P2W selector switches to run as 1 alternator then as synchronous motor. • 8A pushbutton switch to simulate as centrifugal switch. 3 Phase Bidirectional power cum Energy meter panel • Bidirectional Multifunction • 3 Phase ¾ wire, 415V, CT Input 5A • LCD/LED display, Aux supply 230V, 45-65 Hz, 5W • V,I., Hz, Pf, KVA, KW, KWH • Modbus RTU RS 485 1 Integrated AC 1 phase multifunction measurement panel • Consist of 1 nos of (96X96mm) Digital meter for 1 F Measures V, I, PF (0.2 lag - unity 0.2 lead), W, VA, VAR, Hz etc. • Current Range = 5A. • Auxiliary supply = 170-250VAC FWD/REV, Star-Delta starter panel • FWD/REV, 3 pole 3 way switch with centre OFF, 6A/440V. • Star/Delta switch 3 pole, 3 way with centre OFF, 6A/440V. 3 Phase wound Rotor & Sync. Motor panel • Rotor resistors of 30E/5A with 3 taps of 0E, 15E, 21E, 30E( each 3 nos) • Rotor resistor selector switch, 3 pole. 6 Way. 6A/440 V. • DC Rotor excitation with over current Circuit Breaker (3Amp) DC voltmeter & DC ammeter panel a) DC voltmeter (0-300V), b) DC Ammeter (0-5A) with polarity protection diode c) Field failure relay to control Armature supply. SCR Actuator (variable DC) cum sensor signal conditioning panel • Full bridge SCR based 0V-195V / 3 Amp cosine firing with linear charateristics. • Supports signal conditioning circuit for speed, torque in kg to give output 0-2.5Vdc (FS). • 2 Nos. of these supplies required for DC Armature, DC motor field & AC generator excitation. Instrumentation Power supply cum Multichannel DPM panel (a) +/-12 V, 500 mA, (b) +5V, 300mA, (c) Unregulated 17V dc/750 mA (d) line synchronizing signal, (e) 13V / 3 Amp. (f) Multi channel DPM for digital display of torque, speed etc. Resistor Load Panel (1) AC Resistors = 10K/5K/3.5K/2.5K/2K/1.5K/200WX3 phases / 6 taps (2) DC Resistors = 750E / 600E / 300E / 212E / 162E / 125E / 112E/100E/400W / 6 taps+OFF+ separate 60E tap for DC series Gen. LC Load Panel (A) Inductive Load = 0.15H / 0.3H / 0.45H / 0.6H / 0.75H / 1.5H / 3H / 400mA X 3 Nos. (B) Capacitive Load = 1.25μF/ 2.5μF/5μF/415V x 3 Nos. Variable AC/DC power Supply Panel • AC output 0 to 270V / 3 Amp. • DC output 0 to 230V / 3 Amp. List of Experiments 1) DC motor: Speed torque curve of I) DC Shunt motor, ii) DC series motor, iii) separately excited DC motor, iv) DC compound motor. 2) DC generator: V-I, Efficiency curve for I) DC shunt generator, ii) DC series generator, iii) DC separately excited generator, iv) DC compound generator, v) OCC of shunt generator. 3) 3 Phase AC motor: i) speed torque curve of wound rotor I.M. with rotor shorted & with different rotor resistance, ii) DOL/Star-Delta starter, rotor resistance starter, iii) Application of sync. Motor as pf improvement device-V curves. 4) 3 Phase Generator: Synchronous generator V-I curves.

DC Motor Coupled to 3 Phase Salient Motor Trainer SALIENT FEATURES • Facilitates easy & safe wiring by students due to use of 4mm sturdy shrouded banana patch cords & shrouded socket arrangements. • All machines are mounted on finely painted sturdy base frame with easy machine interchangeability Use of gear coupling facilitates screwless coupling. • With due emphasis on student safety machines operate upto 300W power levels &upto 1500 RPM, without compromising didactic use Able to draw all graphs. • Trunnion mounted DC Integrated machine is used as Dynamometer for loading other machines (Motors / generators both); unlike magnetic powder brake or eddy current brake which can load only coupled Motors & not generators, with facility to measure shaft power using electronic torque / speed measurement • Set of Students Workbook & Instructors Guide. Motor Specifications 1) 3 phase Salient Pole Alternator coupled to DC integrated motor setup (Motor-Generator setup): 1) 3 Phase Salient pole alternator : Voltage: 415VAC, 50Hz, Capacity: 300W/4 pole/ 1500RPM, Rotor 1 construction: Star connected, four terminals including star point brought out on 4 slip rings mounted on shaft, Stator construction: Separately excited field winding with laminated solid yoke, 4 pole, brought out on Two terminal, Frame/mounting: 100 frame, chassis mounted, 19mm shaft dia with easily swappable gear coupling. 2) DC Integrated motor : Voltage: Varm = 180V, Vfield = 180V, Capacity: 300W/2 pole/ 1500RPM/6 terminals, Rotor construction: Standard commentator / brush arrangement with laminated stack, brought out on 2 terminals, Stator construction: Separately excited field winding with laminated solid yoke 2 pole & series winding brought out on 4 terminals, Frame/mounting: 100 frame, chassis mounted, 19mm shaft dia, trunnion mounted m/c for use as dynamometer with torque & speed sensors. Technical Specifications Aluminum profile Sturdy Modular Flat (5x4) panel (table top) system, carrying various high voltage components housed in plastic enclosures (panel) to minimise shock possibility. Input 3 phase DOL Starter panel • 4 pole MCB of 415 V/4A . • DOL 9A Contactor with 230V / 50 Hz / 11VA Coil. • Bimetallic thermal O/L relay with range 1.4A - 2.3A. 1 Phase Motor, Alternator & Sync. Motor Panel • 1 MCBs of 4A/1.6A 1 each. • 2no 2P2W selector switches to run as 1 alternator then as synchronous motor. • 8A pushbutton switch to simulate as centrifugal switch. 3 Ph. Bidirectional power cum Energy meter panel • Bidirectional Multifunction • 3 Phase ¾ wire, 415V, CT Input 5A • LCD/LED display, Aux supply 230V, 45-65 Hz, 5W • V,I., Hz, Pf, KVA, KW, KWH • Modbus RTU RS 485 Integrated AC 1 phase multifunction measurement panel • Consist of 1 nos. of (96X96mm) Digital meter for 1 F Measures V, I, PF (0.2 lag - unity 0.2 lead), W, VA, VAR, Hz etc. • Current Range = 5A. • Auxiliary supply = 170-250VAC FWD/REV, Star-Delta starter panel • FWD/REV, 3 pole 3 way switch with centre OFF, 6A/440V. • Star/Delta switch 3 pole, 3 way with centre OFF, 6A/440V. 3 Phase wound Rotor & Sync. Motor panel • Rotor resistors of 30E/5A with 3 taps of 0E, 15E, 21E, 30E( each 3 nos) • Rotor resistor selector switch, 3 pole. 6 Way. 6A/440 V. • DC Rotor excitation with over current Circuit Breaker (3Amp) DC voltmeter & DC ammeter panel a) DC voltmeter (0-300V), b) DC Ammeter (0-5A) with polarity protection diode c) Field failure relay to control Armature supply. SCR Actuator (variable DC) cum sensor signal conditioning panel • Full bridge SCR based 0V-195V / 3 Amp cosine firing with linear charateristics. • Supports signal conditioning circuit for speed, torque in kg to give output 0-2.5Vdc (FS). • 2 Nos. of these supplies required for DC Armature, DC motor field & AC generator excitation. Instrumentation Power supply cum Multichannel DPM panel (a) +/-12 V, 500 mA, (b) +5V, 300mA, (c) Unregulated 17V dc/750 mA (d) line synchronizing signal, (e) 13V / 3 Amp. (f) Multi channel DPM for digital display of torque, speed etc. Resistor Load Panel (1) AC Resistors = 10K/5K/3.5K/2.5K/2K/1.5K/200WX3 phases / 6 taps (2) DC Resistors = 750E / 600E / 300E / 212E / 162E / 125E / 112E/100E/400W / 6 taps+OFF+ separate 60E tap for DC series Gen. LC Load Panel (A) Inductive Load = 0.15H / 0.3H / 0.45H / 0.6H / 0.75H / 1.5H / 3H / 400mA X 3 Nos. (B) Capacitive Load = 1.25μF/ 2.5μF/5μF/415V x 3 Nos. Variable AC/DC power Supply Panel • AC output 0 to 270V / 3 Amp. • DC output 0 to 230V / 3 Amp. List of Experiments 1) DC motor: Speed torque curve of I) DC Shunt motor, ii) DC series motor, iii) separately excited DC motor, iv) DC compound motor. 2) DC generator: V-I, Efficiency curve for I) DC shunt generator, ii) DC series generator, iii) DC separately excited generator, iv) DC compound generator,v) OCC of shunt generator.3)3Ø Synchronous motor: i) Speed torque curve of synchronous motor ii) Efficiency & input power factor measurement, iii) Study of V-curve & inverted ‘V’ curve. 4)Synchronous Generator : i) Output volt-amp characteristics, ii) Efficiency of Synchronous generator, iii) Performance with R, L, C load 5) 3 Phase Auto Transformer: 0-440V/5 I) ) Voltage: 0-440V ii) Current : 5A

Electrical & Electronic Trainer with AVO Meter , 100nA MC meter Lamp, Relays, 4 Cells Panel •Aesthetically designed injection molded electronic desk carrying useful experiment resources Variable Power supplies / Status / Pulsar / Function Generator, DPMs etc. while the central slot will carry replaceable experiment panel secured in an ABS molded plastic sturdy enclosure, & has colorful screw less overlay showing circuit & its connection tag numbers for easy connectivity. • Connection through Sturdy 4mm Banana Sockets & Patch Cords. •Hands on learning by constructing circuits using built in power bread board panel as well as using Discrete component panel. •Set of Users Guide provided with each Unit. Specifications •Built in Power Supply : DC Supply :5V / 1A. & ± 12V, 1A. 0 to 15V DC (Variable), 100 mA (Isolated), 0 to 30V DC (Variable), 100 mA (Isolated High Volt DC 15V to 110V, 100Ma, AC Supply : 12-0-12V AC,150 mA. Short circuit Protected. •Built in Function Generator – O/p Waveform: Sine, Triangle & TTL O/Ps Output Frequency : 1 Hz to 1MHz in 6 ranges, with amplitude & frequency control pots. O/P Voltage 20Vp-p max. (Sin/TRG), Modulation I/P:AM : - I/P voltage + 5V (100% modulation) O/P - For 0V (min), + 5V (max.) - 5V (Phase reversal of O/P) FM : I/P voltage ± 400mV ( + 50% modulation) •Clock Generator : 10 MHz TTL clock. •Data Switches (10 No.) & bi-colour LED status indicators 10X2 Nos, for High / Low indication. •Pulsar switches (2 Nos.) with four debounced outputs - 2No. •BNC to 2 channel banana adapter - 2No. •Logic probe to detect High/Low level pulses upto 1MHz, with bi-colour LEDs to indicate status. •2 / 4 digit 7 segment display with BCD to 7 segment decoder. •Onboard DPMs provided with mode/range selection. (A) DC volt : 2V/200V - 1No. (B) DC current : 2mA/200mA - 1No. (C) DC Volts/Current : 20V/200mA - 1No. •Onboard moving iron meters provided for (A) AC Current : 1 AMP - 1No. (B) AC Voltage : 15V - 1No. •Onboard speaker : 8 Ohms, 0.5 Watt (1No.) •Onboard POTS : 1K - 1No. 1M - 1No. •Operating Voltage: 220/240Vac switch settable ±10%, 50Hz/60VA. AVO Meter, Lamp, Relays, Cells Expt. Panel: 1.5 x 4 No. cells for series parallel expts., moving coil meter (500 uA) to construct voltmeter, ammeter & ohmmeter, bulbs in series parallel relays characteristics staircase lamp logic.

House/ Commercial wiring Installation Trainer Technical Specifications: The Trainer should have Aluminum profile sturdy Modular flat panel (table top) system, carrying various high voltage components housed in plastic enclosures (panel) to minimise shock possibility It should consists of : •1 ph. AC input supply •1 ph. MCBs of 4A/1.6A - 2nos. Grounding & protection panel • Consists of a 2 pole Earth Leakage Circuit Breaker (ELCB) 25A with current imbalance of 30mA. • One NO push button to create Earth leakage fault. • One SPDT to select HI- leakage or LO-leakage fault. • One 15W bulb for Hi-Leakage fault & 22KW resistor for Lo leakage fault. Integrated AC (1 phase) measurement panel • 1 nos of Digital meter for 1 ph. parameters V, I, PF, W, Wh, VA, VAR, Hz, etc. • Current specs = 1A/5A for 1ph. meter (170-250V). AC Power supply panel • AC OSARAM power supply for metal halide lamp 70W (max. 5KV) • Input 230VAC/0.4A DC Power supply panel • SMPS power supply for LED • Input 230VAC, Output +12V/5A, 60W • DC supply for down lighter Switches panel • One way switch = 2 nos • Two way switch = 2 nos Buzzer/bell switch/ Neon panel • Buzzer/Bell, I/P 230VAC • Bell switch • Neon lamp indicator • Kitkat fuse Dimmer/Fault panel • Dimmer • fault = 2 nos Sockets panel • Three pin AC mains Sockets = 3 nos • 230V/10A rating DP switch panel • Double pole single through four terminal S/W= 2nos • Rating 32A/240VAC Lamp panel • Incandescent lamp = 1 no, CFL tube = 1 no Various Lamp/Tubes provided • Metal Halide lamp (70W) • Electronic tube • Point source LED • Strip LED Display panel showing various wiring accessories • Conduit, Elbow joints, casing taping, • Cleats, Batten with clips, cable/wires etc. Wiring practice board A replaceable 20mm particle board is mounted vertically on profiles in front of lower row of panel. The inclination of the board is settable from near vertical position to near horizontal position & it is used for wiring practice by students using self tapping screws & wiring accessories. Following accessories should be provided. Drill Machine, screw driver se, self tapping screws, drill bits. The Trainer should be capable of performing following experiments. 1. Electrical Safety Rules for working in laboratories 1 2. Variety of wiring experiments based on above operational panels 3. Study of Protective Devices Panel 4. Study & use of Measurement Devices 5. Understanding working of various types of lamps including tube, led & other high intensity lamps 6. Hands on wiring practice using cables, casing & hand tools

Power Electronics Trainer with CON / INV Panel Features •Aesthetically designed injection molded electronic desk. •Master unit carrying useful experiment resources like line Synchronized firing circuits, Power supplies, lamp load, RLC loads, Battery Charging supply etc. while the central slot will hold replaceable experiment panels. • Each multi experiment panel is secured in an ABS molded plastic sturdy enclosure, & has colorful screw less overlay showing circuit & Connection through Sturdy 4mm Banana Sockets & Patch Chords. • Set of User Guide provided with each unit. • Power Scope • Accessory for any Lab CRO for off ground differential measurements upto 1000Vdc to facilitate checking inverter / converter waveform. Master Unit Built in power supply • DC supply : + 12V, 500mA, • Unregulated Power supply 17V / 750mA, • Regulated 7VDC to 14VDC/3A O/P is provided as 12V Battery charging supply. In absence of battery, same may be used as simulated battery source to run experiments on inverters etc. • Isolated DC supply +12V/ 300amA with isolated common. • On board Inverter transformer of Primary & Secondaries: 12-11-0-11-12/3A. • On board o/p to Isolated Drive Circuit AC supply • 230V AC line voltage is made available on two banana 4mm sockets as well as 1.5A fuse extender for variac if used. • Aux DC Power Supply : (Useful as field / armature supply for DC motor) • Variable upto 200Vdc/0.5Amp (Phase controlled Thyristor half bridge) • Field ON/OFF control with field failure relay & over current protection circuit. LSPT Panel consisting of • Two pulse transformers of 1:1:1 are provided for isolation & supplying firing pulses along with required DC Power supply to experiment panel under test through 15 pin female 'D' connector. • Selector switch of 2 pole 6 way for selecting different types of firing pulses like out of phase inverter firing using LM3525 with dead time, freq. Control in freq variation from 170 Hz to 250Hz, 12.5/25/6..25 Hz Frequency gated with High •Frequency (3KHz) for Cycloconverter, line Synchronized UJT firing for converter & pulse width R-L-C Load Panel • Load resistor of 10ohm/ 40W & 100ohm / 10W - 1No.each • Centre tapped 3A choke 4mH/ 16mH each -2Nos. • DC choke 0-100-200 mH/750mA- 1No. • Commutation capacitors of 10uF/100V - 4Nos. • AC Paper capacitor of 4uF/440V - 1No. • DC Cap 220uF / 63V- 1No. • Diode BYT 71 (5407)- 1 No. • On board Lamp load of 15W/ 230VAC provided Accessories: • 15 pin D connector cable assembly, • 4mm patchcords : 100mm X 10 Nos & 500mm X 20 Nos. List of experiments: 1 Thyristor based - Converters, Inverters, Cycloconverters, Choppers etc. MOSFET/IGBT based - Choppers, Inverters etc. (All .Hex & C listing files are provided on a CD, you need to download them into kit by ISP method to perform experiments). CON / INV Panel • SCR Converters - Provided with sturdy 800V/12A SCRs (4nos) with uncommitted snubbers, 6A diodes (2nos) commutation switch, 47μF/450V cap, Ramp Cosine firing circuit. However actual working currents are limited to 3A (max) for safety. • Half Wave & Full Wave Fully Controlled converter • AC Voltage Controller using Lamp Universal motor foot mounted. • SCR Controlled Converter 1 phase with R-L Load • Effect of Free Wheeling Diode on SCR converter performance with Inductive load. • Study of SCR converter (Open Loop) output with Inductance Input & Capacitance Input filters • Effect of Source Impedance on performance of SCR converters. • Study of closed loop SCR converters with Resistive Load. • Study of closed loop SCR converters with Motor Load Select motor types from addons below. • Study of full wave -half controlled SCR bridge.• Resonant DC- DC converter. • Advanced firing Schemes• Study of H.F. gate type SCR triggering. • Study of relation between control voltage & SCR converter output DC voltage - using linear resistor controlled synchronized ramp firing (IC815 equivalent). • Study of Linear relation between control voltage & SCR converter output- using cosine firing scheme. • SCR forced Commutation Techniques • Study of forced commutation techniques for SCR, Class A,B,C,D,E,F • SCR based Inverters • SCR based Parallel Inverter. • SCR based series Inverter . • SCR based Bridge Inverter. • SCR based Mcmurray Bedford half bridge inverter. • Cycloconverter • SCR Based cycloconverter • SCR based Chopper • SCR based Jones chopper Resistive load, motor load • SCR based buck (step dn), boost (set up), buck boost chopper • Thyristor drive for DC motors-series shunt motors • Power Scope measurement (upto 1000V DC to facilitate checking inverter / converter waveform)

Wires, Cables & their Gauges, Domestic Electrical Accessories:- 1) Side cutting pliers 2) Circle pliers 3) End wire stripping pliers 4) Bit Driver BD125 5) Digital Multimeter

Workshop Tools:- 1) Bit Driver set BDS125 25mm 2) Temperature Controlled Digital Soldering Station 3) Combination plier IS6149-1`984 grade II 4) Long Nose plier IS3553-1989 5) Bent Nose plier (Econ) 6) Electric Drill Machine 500W

Displacement measurement Trainer using LVDT Technical specification: With build in power supply : +5V,+/- 12V, Variable 0 to +/- 12V •Micrometer 0-20mm (Accuracy 0.01mm) • Precision phase sensitive rectifier • Measurement frequency of 1KHz sine • Signal conditioning circuit with zero & span adjustment for calibration of variac sensor output voltage 0-2.5V or suitable for DPM. • Zero & span adjustment for calibration of following transducers i) Resistive linear transducer : 0 -20mm ii) Capacitive linear transducer : 0 -20mm iii) Capacitive angular transducer : 0 - 90 degree iv) Inductive linear transducer : 0 -20mm v) LVDT transducer : 0 -20mm or (-10 to +10mm)

Displacement measurement Trainer using Strain Gauge based displacement transducer SALIENT FEATURES • Aesthetically designed injection moulded electronic desk. Master unit carrying useful experiment resources like Power supplies, DPMs, Computer Interface, Bar graph LED indicator Function Generator etc. while the central slot will carry replaceable experiment panel secured in an ABS molded plastic sturdy enclosure. • Has colorful screw less overlay showing schematic & its connection tag numbers for easy connectivity. Transparent acrylic overlays will be offered for all sensors Master Unit Technical specification: With build in power supply : +5V,+/- 12V, Variable 0 to +/- 12V • Piezo resistive transducer for strain measurement. • Micrometer 0-20mm (Accuracy 0.01mm) for strain generation. •Strain gauges mounted on cantilever in half & full Wheatstone bridge & instrumentation amplifier with Zero & span adjustment for calibration. •Experiments on Gauge factor determination, Strain indicator, Displacement measurement using Strain gauges.

Displacement measurement Trainer using Pickup SALIENT FEATURES • Aesthetically designed injection moulded electronic desk. Master unit carrying useful experiment resources like Power supplies, DPMs, Computer Interface, Bar graph LED indicator Function Generator etc. while the central slot will carry replaceable experiment panel secured in an ABS molded plastic sturdy enclosure. • Has colorful screw less overlay showing schematic & its connection tag numbers for easy connectivity. Transparent acrylic overlays will be offered for all sensors Master Unit • Built in power supply : DC supply +/- 12V,500mA, Variable 7V to 14V @ 3Amp. • Built in function generator • O/P waveform sine, triangular & square, TTL O/P freq. 1Hz to 200KHz in ranges with amplitude & freq. control pots, o/p voltage 10Vpp. • On board measurement : DC voltmeter 2V/20V (1 No) & LED BAR graph with 10 LED indicator to display 0-2.5V or 0-4V input. Addon: • 12V DC motor with speed varying from 0-4000rpm & rotating slotted wheel having 8 slots • Individual signal conditioning circuit with programmable threshold comparator. • F to V Converter with span & zero amplifier • 6 Nos. of Speed transducers & their experiments: 1) Magnetic pickup, 2) Photo reflective, 3) Photo interruptive 4) Inductive pickup with 5) Stroboscope envelop detector. 6) Hall sensor.

Displacement measurement using Strain Gauge based Load Cell Trainer SALIENT FEATURES • Aesthetically designed injection moulded electronic desk. Master unit carrying useful experiment resources like Power supplies, DPMs, Computer Interface, Bar graph LED indicator Function Generator etc. while the central slot will carry replaceable experiment panel secured in an ABS molded plastic sturdy enclosure. • Has colorful screw less overlay showing schematic & its connection tag numbers for easy connectivity. Transparent acrylic overlays will be offered for all sensors Master Unit • Built in power supply : DC supply +/- 12V,500mA, Variable 7V to 14V @ 3Amp. • Built in function generator • O/P waveform sine, triangular & square, TTL O/P freq. 1Hz to 200KHz in ranges with amplitude & freq. control pots, o/p voltage 10Vpp. • On board measurement : DC voltmeter 2V/20V (1 No) & LED BAR graph with 10 LED indicator to display 0-2.5V or 0-4V input. Addon: Force / Weight measurement using piezo transducer (0- 20 kg )weighing scale sensor

Water Level measurement using Strain Gauge based Water Level Transducer Trainer Technical specification: Level measurement by measuring water column height using pressure sensor by Air bubbler method in 500mm calibrated acrylic water tank, water pump, vibratory air pressure pump, manual bypass valve mounted on a compact table top panel. Can not share with a, f options simultaneously.

V-I characteristics of SCR & measure latching & holding currents Trainer •Aesthetically designed injection molded electronic desk carrying useful experiment resources Variable Power supplies / Status / Pulsar / Function Generator, DPMs etc. while the central slot will carry replaceable experiment panel secured in an ABS molded plastic sturdy enclosure, & has colorful screw less overlay showing circuit & its connection tag numbers for easy connectivity. • Connection through Sturdy 4mm Banana Sockets & Patch Cords. •Hands on learning by constructing circuits using built in power bread board panel as well as using Discrete component panel. •Set of Users Guide provided with each Unit. Specifications •Built in Power Supply : DC Supply :5V / 1A. & ± 12V, 1A. 0 to 15V DC (Variable), 100 mA (Isolated), 0 to 30V DC (Variable), 100 mA (Isolated High Volt DC 15V to 110V, 100Ma, AC Supply : 12-0-12V AC,150 mA. Short circuit Protected. •Built in Function Generator – O/p Waveform: Sine, Triangle & TTL O/Ps Output Frequency : 1 Hz to 1MHz in 6 ranges, with amplitude & frequency control pots. O/P Voltage 20Vp-p max. (Sin/TRG), Modulation I/P:AM : - I/P voltage + 5V (100% modulation) O/P - For 0V (min), + 5V (max.) - 5V (Phase reversal of O/P) FM : I/P voltage ± 400mV ( + 50% modulation) •Clock Generator : 10 MHz TTL clock. •Data Switches (10 No.) & bi-colour LED status indicators 10X2 Nos, for High / Low indication. •Pulser switches (2 Nos.) with four debounced outputs - 2No. •BNC to 2 channel banana adapter - 2No. •Logic probe to detect High/Low level pulses upto 1MHz, with bi-colour LEDs to indicate status. •2 / 4 digit 7 segment display with BCD to 7 segment decoder. •Onboard DPMs provided with mode/range selection. (A) DC volt : 2V/200V - 1No. (B) DC current : 2mA/200mA - 1No. (C) DC Volts/Current : 20V/200mA - 1No. •Onboard moving iron meters provided for (A) AC Current : 1 AMP - 1No. (B) AC Voltage : 15V - 1No. •Onboard speaker : 8 Ohms, 0.5 Watt (1No.) •Onboard POTS : 1K - 1No. 1M - 1No. •Operating Voltage: 220/240Vac switch settable ±10%, 50Hz/60VA. Semiconductor & Power Semiconductor Devices Experiment Panel [Provided with 41 banana tags] Characteristics of following devices : Silicon diode, Semiconductor Testing using Multimeter, Germanium diode, zener diode, LED, diac, bipolar transistor (NPN, PNP), Field Effect Transistor (FET), MOSFET, IGBT, UJT, Silicon Controlled Rectifier (SCR), Triac, Optocoupler, Thermistor, V-I Character istics on CRO of SCR, Triac, Transistor as a Switch & MOSFET as a Switch.

UJT Trigger Circuit for Half Wave & Full Wave Control Trainer Features •Aesthetically designed injection molded electronic desk. •Master unit carrying useful experiment resources like line Synchronized firing circuits, Power supplies, lamp load, RLC loads, Battery Charging supply etc. while the central slot will hold replaceable experiment panels. • Each multi experiment panel is secured in an ABS molded plastic sturdy enclosure, & has colorful screw less overlay showing circuit & Connection through Sturdy 4mm Banana Sockets & Patch Chords. • Set of User Guide provided with each unit. • Power Scope • Accessory for any Lab CRO for off ground differential measurements upto 1000VDC to facilitate checking inverter / converter waveform. Master Unit Built in power supply • DC supply : + 12V, 500mA, • Unregulated Power supply 17V / 750mA, • Regulated 7VDC to 14VDC/3A O/P is provided as 12V Battery charging supply. In absence of battery, same may be used as simulated battery source to run experiments on inverters etc. • Isolated DC supply +12V/ 300amA with isolated common. • On board Inverter transformer of Primary & Secondaries: 12-11-0-11-12/3A. • On board o/p to Isolated Drive Circuit AC supply • 230V AC line voltage is made available on two banana 4mm sockets as well as 1.5A fuse extender for variac if used. • Aux DC Power Supply : (Useful as field / armature supply for DC motor) • Variable upto 200Vdc/0.5Amp (Phase controlled Thyristor half bridge) • Field ON/OFF control with field failure relay & over current protection circuit. LSPT Panel consisting of • Two pulse transformers of 1:1:1 are provided for isolation & supplying firing pulses along with required DC Power supply to experiment panel under test through 15 pin female 'D' connector.• Selector switch of 2 pole 6 way for selecting different types of firing pulses like out of phase inverter firing using LM3525 with dead time, freq. Control in freq variation from 170 Hz to 250Hz, 12.5/25/6..25 Hz Frequency gated with High •Frequency (3KHz) for Cycloconverter, line Synchronized UJT firing for converter & pulse width R-L-C Load Panel • Load resistor of 10ohm/ 40W & 100ohm / 10W - 1No.each • Centre tapped 3A choke 4mH/ 16mH each -2Nos. • DC choke 0-100-200 mH/750mA- 1No. • Commutation capacitors of 10uF/100V - 4Nos. • AC Paper capacitor of 4uF/440V - 1No. • DC Cap 220uF / 63V- 1No. • Diode BYT 71 (5407)- 1 No. • On board Lamp load of 15W/ 230VAC provided Accessories: • 15 pin D connector cable assembly, • 4mm patch cords : 100mm X 10 Nos & 500mm X 20 Nos. List of experiments: Thyristor based - Converters, Inverters, Cycloconverters, Choppers etc. MOSFET/IGBT based - Choppers, Inverters etc. (All .Hex & C listing files are provided on a CD, you need to download them into kit by ISP method to perform experiments). CON / INV Panel • SCR Converters - Provided with sturdy 800V/12A SCRs (4nos) with uncommitted snubbers, 6A diodes (2nos) commutation switch, 47μF/450V cap, Ramp Cosine firing circuit. However actual working currents are limited to 3A (max) for safety. • Half Wave & Full Wave Fully Controlled converter • AC Voltage Controller using Lamp Universal motor foot mounted. • SCR Controlled Converter 1 phase with R-L Load • Effect of Free Wheeling Diode on SCR converter performance with Inductive load. • Study of SCR converter (Open Loop) output with Inductance Input & Capacitance Input filters • Effect of Source Impedance on performance of SCR converters. • Study of closed loop SCR converters with Resistive Load. • Study of closed loop SCR converters with Motor Load Select motor types from addons below. • Study of full wave -half controlled SCR bridge. • Resonant DC- DC converter. • Advanced firing Schemes • Study of H.F. gate type SCR triggering. • Study of relation between control voltage & SCR converter output DC voltage - using linear resistor controlled synchronized ramp firing (IC815 equivalent). • Study of Linear relation between control voltage & SCR converter output- using cosine firing scheme. • SCR forced Commutation Techniques • Study of forced commutation techniques for SCR, Class A,B,C,D,E,F • SCR based Inverters • SCR based Parallel Inverter. • SCR based series Inverter . • SCR based Bridge Inverter. • SCR based Mcmurray Bedford half bridge inverter. • Cycloconverter • SCR Based cycloconverter • SCR based Chopper • SCR based Jones chopper Resistive load, motor load • SCR based buck (step dn), boost (set up), buck boost chopper • Thyristor drive for DC motors-series shunt motors • Power Scope measurement (upto 1000V DC to facilitate checking inverter / converter waveform)

Power Electronics Trainer with CON / INV Panel Features •Aesthetically designed injection molded electronic desk. •Master unit carrying useful experiment resources like line Synchronized firing circuits, Power supplies, lamp load, RLC loads, Battery Charging supply etc. while the central slot will hold replaceable experiment panels. • Each multi experiment panel is secured in an ABS molded plastic sturdy enclosure, & has colorful screw less overlay showing circuit & Connection through Sturdy 4mm Banana Sockets & Patch Chords. • Set of User Guide provided with each unit. • Power Scope • Accessory for any Lab CRO for off ground differential measurements upto 1000Vdc to facilitate checking inverter / converter waveform. Master Unit Built in power supply • DC supply : + 12V, 500mA, • Unregulated Power supply 17V / 750mA, • Regulated 7VDC to 14VDC/3A O/P is provided as 12V Battery charging supply. In absence of battery, same may be used as simulated battery source to run experiments on inverters etc. • Isolated DC supply +12V/ 300amA with isolated common. • On board Inverter transformer of Primary & Secondaries: 12-11-0-11-12/3A. • On board o/p to Isolated Drive Circuit AC supply • 230V AC line voltage is made available on two banana 4mm sockets as well as 1.5A fuse extender for variac if used. • Aux DC Power Supply : (Useful as field / armature supply for DC motor) • Variable upto 200Vdc/0.5Amp (Phase controlled Thyristor half bridge) • Field ON/OFF control with field failure relay & over current protection circuit. LSPT Panel consisting of • Two pulse transformers of 1:1:1 are provided for isolation & supplying firing pulses along with required DC Power supply to experiment panel under test through 15 pin female 'D' connector. • Selector switch of 2 pole 6 way for selecting different types of firing pulses like out of phase inverter firing using LM3525 with dead time, freq. Control in freq variation from 170 Hz to 250Hz, 12.5/25/6..25 Hz Frequency gated with High •Frequency (3KHz) for Cycloconverter, line Synchronized UJT firing for converter & pulse width R-L-C Load Panel • Load resistor of 10ohm/ 40W & 100ohm / 10W - 1No.each • Centre tapped 3A choke 4mH/ 16mH each -2Nos. • DC choke 0-100-200 mH/750mA- 1No. • Commutation capacitors of 10uF/100V - 4Nos. • AC Paper capacitor of 4uF/440V - 1No. • DC Cap 220uF / 63V- 1No. • Diode BYT 71 (5407)- 1 No. • On board Lamp load of 15W/ 230VAC provided Accessories: • 15 pin D connector cable assembly, • 4mm patch cords : 100mm X 10 Nos & 500mm X 20 Nos. List of experiments: Thyristor based - Converters, Inverters, Cycloconverters, Choppers etc. MOSFET/IGBT based - Choppers, Inverters etc. (All Hex & C listing files are provided on a CD, you need to download them into kit by ISP method to perform experiments). CON / INV Panel • SCR Converters - Provided with sturdy 800V/12A SCRs (4nos) with uncommitted snubbers, 6A diodes (2nos) commutation switch, 47μF/450V cap, Ramp Cosine firing circuit. However actual working currents are limited to 3A (max) for safety. • Half Wave & Full Wave Fully Controlled converter • AC Voltage Controller using Lamp Universal motor foot mounted. • SCR Controlled Converter 1 phase with R-L Load • Effect of Free Wheeling Diode on SCR converter performance with Inductive load. • Study of SCR converter (Open Loop) output with Inductance Input & Capacitance Input filters • Effect of Source Impedance on performance of SCR converters. • Study of closed loop SCR converters with Resistive Load. • Study of closed loop SCR converters with Motor Load Select motor types from addons below. • Study of full wave -half controlled SCR bridge. • Resonant DC- DC converter. • Advanced firing Schemes • Study of H.F. gate type SCR triggering. • Study of relation between control voltage & SCR converter output DC voltage - using linear resistor controlled synchronized ramp firing (IC815 equivalent). • Study of Linear relation between control voltage & SCR converter output- using cosine firing scheme. • SCR forced Commutation Techniques • Study of forced commutation techniques for SCR, Class A,B,C,D,E,F • SCR based Inverters • SCR based Parallel Inverter. • SCR based series Inverter . • SCR based Bridge Inverter. • SCR based Mcmurray Bedford half bridge inverter. • Cycloconverter • SCR Based cycloconverter • SCR based Chopper • SCR based Jones chopper Resistive load, motor load • SCR based buck (step dn), boost (set up), buck boost chopper • Thyristor drive for DC motors-series shunt motors • Power Scope measurements upto 1000V DC to facilitate checking inverter / converter waveform.

Power Electronics Trainer with CON / INV Panel Features •Aesthetically designed injection molded electronic desk. •Master unit carrying useful experiment resources like line Synchronized firing circuits, Power supplies, lamp load, RLC loads, Battery Charging supply etc. while the central slot will hold replaceable experiment panels. • Each multi experiment panel is secured in an ABS molded plastic sturdy enclosure, & has colorful screw less overlay showing circuit & Connection through Sturdy 4mm Banana Sockets & Patch Chords. • Set of User Guide provided with each unit. • Power Scope • Accessory for any Lab CRO for off ground differential measurements upto 1000Vdc to facilitate checking inverter / converter waveform. Master Unit Built in power supply • DC supply : + 12V, 500mA, • Unregulated Power supply 17V / 750mA, • Regulated 7VDC to 14VDC/3A O/P is provided as 12V Battery charging supply. In absence of battery, same may be used as simulated battery source to run experiments on inverters etc . • Isolated DC supply +12V/ 300amA with isolated common. • On board Inverter transformer of Primary & Secondaries: 12-11-0-11-12/3A. • On board o/p to Isolated Drive Circuit AC supply • 230V AC line voltage is made available on two banana 4mm sockets as well as 1.5A fuse extender for variac if used. • Aux DC Power Supply : (Useful as field / armature supply for DC motor) • Variable upto 200Vdc/0.5Amp (Phase controlled Thyristor half bridge) • Field ON/OFF control with field failure relay & over current protection circuit. LSPT Panel consisting of Two pulse transformers of 1:1:1 are provided for isolation & supplying firing pulses along with required DC Power supply to experiment panel under test through 15 pin female 'D' connector. • Selector switch of 2 pole 6 way for selecting different types of firing pulses like out of phase inverter firing using LM3525 with dead time, freq. Control in freq variation from 170 Hz to 250Hz, 12.5/25/6..25 Hz Frequency gated with High •Frequency (3KHz) for Cycloconverter, line Synchronized UJT firing for converter & pulse width R-L-C Load Panel • Load resistor of 10ohm/ 40W & 100ohm / 10W - 1No.each • Centre tapped 3A choke 4mH/ 16mH each -2Nos. • DC choke 0-100-200 mH/750mA- 1No. • Commutation capacitors of 10uF/100V - 4Nos. • AC Paper capacitor of 4uF/440V - 1No. • DC Cap 220uF / 63V- 1No. • Diode BYT 71 (5407)- 1 No. • On board Lamp load of 15W/ 230VAC provided Accessories: • 15 pin D connector cable assembly, • 4mm patch cords : 100mm X 10 Nos & 500mm X 20 Nos. List of experiments: Thyristor based - Converters, Inverters, Cycloconverters, Choppers etc. MOSFET/IGBT based - Choppers, Inverters etc. (All .Hex & C listing files are provided on a CD, you need to download them into kit by ISP method to perform experiments). CON / INV Panel • SCR Converters - Provided with sturdy 800V/12A SCRs (4nos) with uncommitted snubbers, 6A diodes (2nos) commutation switch, 47μF/450V cap, Ramp Cosine firing circuit. However actual working currents are limited to 3A (max) for safety. • Half Wave & Full Wave Fully Controlled converter • AC Voltage Controller using Lamp Universal motor foot mounted. • SCR Controlled Converter 1 phase with R-L Load • Effect of Free Wheeling Diode on SCR converter performance with Inductive load. • Study of SCR converter (Open Loop) output with Inductance Input & Capacitance Input filters • Effect of Source Impedance on performance of SCR converters.• Study of closed loop SCR converters with Resistive Load. • Study of closed loop SCR converters with Motor Load Select motor types from addons below. • Study of full wave -half controlled SCR bridge.• Resonant DC- DC converter. • Advanced firing Schemes • Study of H.F. gate type SCR triggering. • Study of relation between control voltage & SCR converter output DC voltage - using linear resistor controlled synchronized ramp firing (IC815 equivalent). • Study of Linear relation between control voltage & SCR converter output- using cosine firing scheme. • SCR forced Commutation Techniques • Study of forced commutation techniques for SCR, Class A,B,C,D,E,F • SCR based Inverters • SCR based Parallel Inverter. • SCR based series Inverter . • SCR based Bridge Inverter. • SCR based Mcmurray Bedford half bridge inverter. • Cycloconverter • SCR Based cycloconverter • SCR based Chopper • SCR based Jones chopper Resistive load, motor load • SCR based buck (step dn), boost (set up), buck boost chopper • Thyristor drive for DC motors-series shunt motors • Power Scope measurements upto 1000V DC to facilitate checking inverter / converter waveform.

Power Electronics Trainer with CON / INV Panel Features •Aesthetically designed injection molded electronic desk. •Master unit carrying useful experiment resources like line Synchronized firing circuits, Power supplies, lamp load, RLC loads, Battery Charging supply etc. while the central slot will hold replaceable experiment panels. • Each multi experiment panel is secured in an ABS molded plastic sturdy enclosure, & has colorful screw less overlay showing circuit & Connection through Sturdy 4mm Banana Sockets & Patch Chords. • Set of User Guide provided with each unit. • Power Scope • Accessory for any Lab CRO for off ground differential measurements upto 1000Vdc to facilitate checking inverter / converter waveform. Master Unit Built in power supply • DC supply : + 12V, 500mA, • Unregulated Power supply 17V / 750mA, • Regulated 7VDC to 14VDC/3A O/P is provided as 12V Battery charging supply. In absence of battery, same may be used as simulated battery source to run experiments on inverters etc. • Isolated DC supply +12V/ 300amA with isolated common. • On board Inverter transformer of Primary & Secondaries: 12-11-0-11-12/3A. • On board o/p to Isolated Drive Circuit AC supply • 230V AC line voltage is made available on two banana 4mm sockets as well as 1.5A fuse extender for variac if used. • Aux DC Power Supply : (Useful as field / armature supply for DC motor) • Variable upto 200Vdc/0.5Amp (Phase controlled Thyristor half bridge) • Field ON/OFF control with field failure relay & over current protection circuit. LSPT Panel consisting of • Two pulse transformers of 1:1:1 are provided for isolation & supplying firing pulses along with required DC Power supply to experiment panel under test through 15 pin female 'D' connector. • Selector switch of 2 pole 6 way for selecting different types of firing pulses like out of phase inverter firing using LM3525 with dead time, freq. Control in freq variation from 170 Hz to 250Hz, 12.5/25/6..25 Hz Frequency gated with High •Frequency (3KHz) for Cycloconverter, line Synchronized UJT firing for converter & pulse width R-L-C Load Panel • Load resistor of 10ohm/ 40W & 100ohm / 10W - 1No.each • Centre tapped 3A choke 4mH/ 16mH each -2Nos. • DC choke 0-100-200 mH/750mA- 1No. • Commutation capacitors of 10uF/100V - 4Nos. • AC Paper capacitor of 4uF/440V - 1No. • DC Cap 220uF / 63V- 1No. • Diode BYT 71 (5407)- 1 No. • On board Lamp load of 15W/ 230VAC provided Accessories: • 15 pin D connector cable assembly, • 4mm patchcords : 100mm X 10 Nos & 500mm X 20 Nos. List of experiments: Thyristor based - Converters, Inverters, Cycloconverters, Choppers etc. MOSFET/IGBT based - Choppers, Inverters etc. (All .Hex & C listing files are provided on a CD, you need to download them into kit by ISP method to perform experiments) . CON / INV Panel • SCR Converters - Provided with sturdy 800V/12A SCRs (4nos) with uncommitted snubbers, 6A diodes (2nos) commutation switch, 47μF/450V cap, Ramp Cosine firing circuit. However actual working currents are limited to 3A (max) for safety. • Half Wave & Full Wave Fully Controlled converter • AC Voltage Controller using Lamp Universal motor foot mounted. • SCR Controlled Converter 1 phase with R-L Load • Effect of Free Wheeling Diode on SCR converter performance with Inductive load. • Study of SCR converter (Open Loop) output with Inductance Input & Capacitance Input filters • Effect of Source Impedance on performance of SCR converters. • Study of closed loop SCR converters with Resistive Load. • Study of closed loop SCR converters with Motor Load Select motor types from addons below. • Study of full wave -half controlled SCR bridge. • Resonant DC- DC converter. • Advanced firing Schemes • Study of H.F. gate type SCR triggering. • Study of relation between control voltage & SCR converter output DC voltage - using linear resistor controlled synchronized ramp firing (IC815 equivalent). • Study of Linear relation between control voltage & SCR converter output- using cosine firing scheme. • SCR forced Commutation Techniques • Study of forced commutation techniques for SCR, Class A,B,C,D,E,F • SCR based Inverters • SCR based Parallel Inverter. • SCR based series Inverter . • SCR based Bridge Inverter. • SCR based Mcmurray Bedford half bridge inverter. • Cycloconverter • SCR Based cycloconverter • SCR based Chopper • SCR based Jones chopper Resistive load, motor load • SCR based buck (step dn), boost (set up), buck boost chopper • Thyristor drive for DC motors-series shunt motors • Power Scope measurements upto 1000V DC to facilitate checking inverter / converter waveform.

IDMT Over Current Relay Trainer (Numerical type) The Trainer set should consist of the following features: • The trainer should consist of built in requisite relay testing kit typically consisting of voltage injector,current injector, elapsed time counter (1 msec resolution), trip relay logic etc. • The trainer should have a few set of associated relay testing (current / voltage injection etc.) panels (7-8 nos. typically) which are mounted in a light weight sturdy aluminum profile flat demo panel system. • Should have 4mm sturdy shrouded banana patch cords & shrouded arrangements. • Each panel should have ABS molded plastic sturdy enclosure, & colorful screwless overlays showing circuits diagrams & its connection tag numbers for easy understanding & connection • Should Facilitates easy & safe wiring by students due to use of 4mm sturdy Shrouded banana patch cords & shrouded socket arrange-ments for high voltage circuits & Set of Instructor Guide & Student Workbook should be provided • Trainer should be modular panels for easy site servicing not close control; panel box no wiring should not be there & shrouded 4 mm banana patch cords & shrouded sockets arrangements for the safety of the students Technical Specifications of interfacing panels: Aluminum profile sturdy Flat panel system carrying various high voltage components housed in modular plastic enclosures to minimize shock possibility. 1 phase AC Input supply panel Should consist of • 1ph. MCBs of 4A/1.6A - 2nos. • Bulb Load. Variable voltage & current injector panel Should consist of • 1 phase dimmer 230VAC/1A • Short circuit transformer with primary 230VAC/1A, secondary 0-2-8V/12A taps. Over current & elapsed time measurement panel Should consist of • AC ammeter of 20A • Elapsed time counter range 999.001 sec, resolution 1 msec. Over Current Relay Panel All the connecting of relay should brought out on this panel & it should consist of o 2 NO trip contacts. o Relay Coil Protection relay type (Numerical) Should consist of numerical type IDMT over current relay, current rating 5A, with current setting of 2- 250% in seven equal steps of 2%, time setting 0.1 to 1. The above trainer should cover following experiments: 1. To plot Inverse Definite Minimum Time (IDMT) characteristics of over current relay. 2. To perform experiment on definite / instantaneous mode setting of the relay.

Cable Fault Locator Trainer by Bridge method •Aesthetically designed injection molded electronic desk carrying useful experiment resources Variable Power supplies / Status / Pulsar / Function Generator, DPMs etc. while the central slot will carry replaceable experiment panel secured in an ABS molded plastic sturdy enclosure, & has colorful screw less overlay showing circuit & its connection tag numbers for easy connectivity. • Connection through Sturdy 4mm Banana Sockets & Patch Cords. •Hands on learning by constructing circuits using built in power bread board panel as well as using Discrete component panel. •Set of Users Guide provided with each Unit. Specifications •Built in Power Supply : DC Supply :5V / 1A. & ± 12V, 1A. 0 to 15V DC (Variable), 100 mA (Isolated), 0 to 30V DC (Variable), 100 mA (Isolated High Volt DC 15V to 110V, 100Ma, AC Supply : 12-0-12V AC,150 mA. Short circuit Protected. •Built in Function Generator – O/p Waveform: Sine, Triangle & TTL O/Ps Output Frequency : 1 Hz to 1MHz in 6 ranges, with amplitude & frequency control pots. O/P Voltage 20Vp-p max. (Sin/TRG), Modulation I/P:AM : - I/P voltage + 5V (100% modulation) O/P - For 0V (min), + 5V (max.) - 5V (Phase reversal of O/P) FM : I/P voltage ± 400mV ( + 50% modulation) •Clock Generator : 10 MHz TTL clock. •Data Switches (10 No.) & bi-colour LED status indicators 10X2 Nos, for High / Low indication. •Pulser switches (2 Nos.) with four debounced outputs - 2No. •BNC to 2 channel banana adapter - 2No. •Logic probe to detect High/Low level pulses upto 1MHz, with bi-colour LEDs to indicate status. •2 / 4 digit 7 segment display with BCD to 7 segment decoder. •Onboard DPMs provided with mode/range selection. (A) DC volt : 2V/200V - 1No. (B) DC current : 2mA/200mA - 1No. (C) DC Volts/Current : 20V/200mA - 1No. •Onboard moving iron meters provided for (A) AC Current : 1 AMP - 1No. (B) AC Voltage : 15V - 1No. •Onboard speaker : 8 Ohms, 0.5 Watt (1No.) •Onboard POTS : 1K - 1No. 1M - 1No. •Operating Voltage: 220/240Vac switch settable ±10%, 50Hz/60VA. Cable Fault Locator Experiment : About panel : The panel consists of 7 step capacitor bank (100PF 100μF), 100Ω (wire wound) pot, 25Ω (wire wound) pot, 10KΩ (10 turns) pot, BNC connectors (8 nos), Banana sockets (47 nos), RG58 cables 25m x 3nos. & 1.5m x 3nos. Function blocks - AC to DC convertor for null detector, Sine generator (1KHz, 5Vp-p), Variable power supply (1.2 to 5Vdc settable).Needs +/-12Vdc external power supply. Experiments performed : 1) Murray loop for ground fault and short circuit fault. 2) Varley loop for ground fault and short circuit fault. 3) Fisher loop for ground fault. 4) Open circuit fault by capacitance measurement.

Breakdown strength of transformer Oil Technical Specifications: • Range : 0 — 60 KV Oil Test Kit • Power Supply : 220V AC, 5 0Hz, Single Phase • Voltage Range : 0- 60 KV AC • Indication : Analog / Digital Voltmeter • Transformer: 30 KV, 2 No. Epoxy molded transformer • Bushing : Epoxy molded bushings • Rate of rise of Voltage (for Motorized): 1.2—2KV/Sec. • Resolution: 1KV • Accuracy: +/- 1% Safety Features: (i) Zero Start Facility (ii) Over Voltage Protection (iii) Door Lock Safety