Airports Authority Of India Tender

SH: I 11KV HT PANEL BOARD Design ,Supply, Installation, Testing & Commissioning of indoor type (IP 4X) floor mounted metal clad, 11 KV Switch Board VCB panel with 4 Nos. VCBs, totally enclosed & fully interlocked,truck mounting, horizontal draw out, horizontal isolation type vacuum breaker as per IS / IEC 62271-100 & 62271-200 for breakers & for panels IS3247 as amended up to date, having capacities as mentioned below, free standing extensible on both sides, single break, trip free mechanism, motorised charged and auto/ manually closing breaker suitable for use on 11 KV, 3 Phase, 50Hz A.C. supply with short circuit fault level of 500 MVA, complete with self contained short time current 26.3 kA for 3 sec, Internal Arc Test for AFLR 26.3 kA for 1 sec at individual compartments i.e busbar, VCB, and cable compartment, rack in and rack out mechanism, air insulated but encapsulated copper bus bars capacity meeting fault level current , DC power pack,breaker featured with mechanical ON / OFF indicator with hand trip device, Breaker control TNC switch and all accessories such as shunt trip coil, and auxiliary switch of 4NO+4NC, motorised and manually operated spring assisted closing mechanism, emergency trip push button, interconnections,space heaters, earthing, etc. and equipped with following switchgears and accessories, connections suitable for cable upto 3C x 120 sqmm XLPE cable of 11 KV grade (cable entry from bottom), Separate earthing switch shall be provided for Cable earthing . The earthing truck shall be so designed that it is impossible to earth a live cable terminations suitable for 3C x 120 sq.mm. XLPE 11 KV cable.

A. Incomer 2 Nos. each consisting of following; 1 No. of 630/800 Amp , 11 KV , 3 Ph, 3P 1 No - Multifunction Meter with accuracy class 0.5 LED display of I ,V, Hz, Active, Reactive , Apparent Power & Energy, Power factor, %THD , Maximum demand load, (complying with IEC61557-12) with RS 485 & Ethernet port and protection MCB and required accessories to complete the system. 3 No. Cast resin drawout type PTs 11 KV / √3 / 110 √3, class 0.5, 50 VA burden including HT HRC fuse on 11 KV Side and MCBs on secondary side protection. 3 No. Cast resin insulated Dual core 3 CTs 100 / 5-5A of 10VA burden and accuracy Class -0.5 for metering and class 5P10 for protection. Aux. relays for Anti Pumping & indication. Trip Circuit supervision relay '- Master Trip Circuit Relay 1 No. Micro processor based over current, short circuit 50,50 N & earth fault numerical IDMT relay with having RS 485 modbus communication facility consisting 3 element for over current relay and one earth fault capable of storing last 10 trip history. 1 No. Over & under voltage protection relay. 1 No. Over & under frequency relay. 1 No. Alarm annunciator with minimum 8 windows and buzzer, ACK, rest, test push button for transformer faults and electrical faults in respective window.

B. Busbar 630/800 Amps TP, 12 KV Copper Bus bar with heat shrinkable insulated sleeves with cast epoxy insulator to withstand full short circuit currents upto 26.3 kA for 1 second. C. Outgoings 2 Nos each consisting of following; 1 No.630/800 Amp., 11 KV VCB horizontal draw out type VCB with motorized spring charge mechanism, T/N/C switch and required safety switchgears complete. Aux. relays for WTI, OTI & Buccholz protection. (Both alarm & trip) Trip Circuit supervision relay '- Master Trip Circuit Relay 1 No. Micro processor based over current, short circuit 50,50 N & earth fault numerical IDMT relay with having RS 485 modbus communication facility consisting 3 element for over current relay and one earth fault capable of storing last 10 trip history. 1 No - Multifunction Meter with LED display of I ,V, Hz, Active, Reactive , Apparent Power & Energy,Power factor, % %THD , Maximum demand, (complying with IEC61557-12) with RS 485 & Ethernet port and protection MCB and required accessories to complete the system. 3 No. Cast resin insulated Dual core 3 CTs 50/5-5A of 10VA burden and accuracy Class -0.5 for metering and class 5P10 for protection. 1 No. Auxiliary relays for transformer faults WTI with alarm, trip and hooter 1 No. Alarm annunciator with minimum 8 windows and buzzer, ACK, rest, test push button for transformer faults and electrical faults in respective window.