Special Repair/Replacement of Capacitor panel at X and J block at AHRR under GE E/M RR Hospital, Delhi Cantt-10

Amount

Design, fabrication, assembling, wiring, supply, installation, testing and commissioning in replacement of OEM/ OEM's authorized franchise manufactured APFC Panel capacitor duty contrctor and 7% detuned Copper wound reactor, of capacity 350 KVAR (Output) @ 440 V AC. The APFC panel shall have 12 stages and the stage ratings will be decided by Engr-in-Charge at the time of execution. The APFC Panel shall be fully type tested at an Independent Laboratory and shall comply with IEC 61439 & IEC 61921 (TTA design). The degree of protection of enclosures system of the APFC Panel shall be minimum IP42 indoor type in accordance with IEC 60529 and mechanical impact test IK10 as per IEC. The capacitor panel shall be communicable and integrable with EMS. The APFC panel should have the capability for environmental monitoring where it is able to provide the real time data for the temperature and humidity inside the panel ambient. The APFC panel shall be floor mounted design with necessary foundation, weather proof, dust proof, vermin proof, suitable for humidity up to 95% and shall be painted with powder coating Siemens grey shade RAL-7035/7032. Average daily temperature: +35°C max, Ambient temperature: -5°C to 40°C. APFC panel shall be comprising of the following:-

(i) Insulated bus bar assembly made from Aluminium and rated of 800 Amps capacity. The short circuit withstand capacity shall be 50 KA / 1 Sec(Icw) for the main bus bar and the rated impulse withstand voltage shall be 8KV. (ii) The incomer of the APFC Panel shall be a 800A 4P MCCB 50KA, microprocessor based release with Over-Load, Earth fault & Short-Circuit protection, Ics = 100% Icu, MCCB shall have standard extended rotary handle, spreaders, phase barrier. MCCB shall be of certified design confirming to IEC 60947-1,2 & 3. The incomer shall also have Digital V, A, F & PF meter 96x96 sqmm, Flush Mounted (16 parameters), Emergency STOP Push Button, Indicating lamps - R/Y/B/ON/OFF/TRIP, 12-Steps APFC Relay & OFF Delay Timer etc. (iii) Capacitor Units: The capacitor unit shall be heavy duty metalized polypropylene film with Zn / Al alloy. The capacitors shall be encapsulated in an aluminium can. The capacitor unit shall have a rated voltage of 480V. The capacitor unit shall have a built in 3 phase over pressure protection and shall have quick discharge resistors (50V in 1 min) factory fitted and shall be tamper proof. Capacitance Tolerance -5%, +10%. Maximum permissible over voltage 1.1 times of nominal Voltage, 8 h every 24 h. The capacitor unit shall be of certified design confirming to IS-13340-1993, 13341-1992 & IEC - 60831-1&2

(iv) Short-circuit and Overload Protection: Each stage of the APFC Panel shall have a suitably rated MCCB for short-circuit and overload protection. The over-current setting shall be adjustable & Breaking capacity Ics=> 36kA. The MCCB shall be of certified design confirming to IEC 60947-1, 2 & 3. The Detuned Reactor (Copper Wound) should be equipped with Thermal Switch inside the Winding which should cut-off the respective contactor in case of Over- temperature. Tolerance of reactors shall not exceed +/-3% of rated value. (v) In addition to the PF Controller, the controller shall be 3 CT operated, shall be communicable and should measure individual harmonics upto 31st order - Status of stages (open / close / faulty). - Real time capacitance value of the connected stage. - Initial capacitance value. - Number of operation of stages ( stage utilization / operation) - energy parameters like : I, V , P , Q, S , Operating PF, Target PF, Operating Temperature, Max Temperature, % THD V, %THD I - Display of alarms

(vi) Stage Contactor: The power contactors shall be rated for 230 Volts AC and shall be 3-pole type and shall be employed for switching 'on' and switching 'off' operations in capacitor banks. The rating of contactor shall be suitably assigned and capacitor should be with damping resistors to limit the capacitor charging current. Thecontactor shall be AC- 3 duty type. The contactor shall be of certifieddesign confirming to IEC60947-1 & 4-1. (vii) Reactor: - Harmonic block reactors copper wound with 7% filtering factor shall be connected in series with each capacitor stage and shall be of iron cored type. The Reactor should be equipped with Thermal Switch inside the Winding which should cut-off the respective contactor in case of Over-temperature. Tolerance of reactors shall not exceed +/-5% of rated value. The reactors shall be of certified design confirming to IEC-60076 - 6/60289/ IS-5553. (viii) Ventilating fans of required size shall be used to dissipate the heat produced by the capacitor bank components like the capacitor units, reactors, contactors, breakers etc. The capacitor banks should be of type tested design and temperature rise test report of the capacitor bank performed at an independent laboratory should be submitted along with the offer. (ix) Make of Capacitors must be same as make of Capacitor Panel.

(x) The design of APFC panel should be given by Original Equipment Manufacturer (OEM ) only and approved by GE before manufacturing of the same. The APFC panel shall be manufactured by an OEM or OEM’s authorized franchise only. Note for Item No. 1: (a) The APFC Panel described as above complete in all respect as per specification enclosed, up to the entire satisfaction of Engineer-in-Charge. To ensure safety, reliability and accountability of component coordination, all the major capacitor bank components such as capacitor units, de tuning reactors, PF controllers, circuit breakers, contactors and the enclosure system called for in this specification should preferably be from a single manufacturer. The OEM shall preferably manufacturer PFC components and switchgear. (b) The OEM’s/ their authorized franchise’s engineer(s) should be present at the time of commissioning and testing of APFC panels. (c) OEM will stand warranty of 05 years for complete design, supply and inspection upto site service support.

M & L in replacement of laying, testing and commissioning of XLPE insulated, armoured heavy duty electric cable with stranded aluminium conductor, 1100 volts grade of size 400 sqmm × 3.5 core including cable lugs, fixing clamps etc. complete all as specified and directed.

M & L in replacement of Earthing complete with copper earth plate 60cm×60cm×3.15mm thick buried directly in ground(earth) pit not less than 2.25 meter deep below normal ground level with top edge of earth plate not less than 1.5 mtr below normal ground level connected to 20×3mm copper strip by means of bolts, nuts check nuts and washers of galvanized iron or steel all as shown in electrical plate No 3 of SSR Pt-I connected earthing test point/panel all as specified including PCC earth chamber using PCC(1:3:6) Type C-2, 50 mm thick, using 40 mm graded stone aggregate, cast iron frame with CI cover including hinges, Funnel with watering pipe, wire mesh, copper lugs, excavation and earth work etc. complete all as specified and directed. Note:- i) Rate included for Adequate quantity of charcoal dust, common salt and Testing commissioning including checking of earth continuity and earth result complete all as specified and as directed. ii) Rates for Main earthing lead from earth electrode to test point upto 7.5 metre will deemed to be included in quoted rates. iii) On testing after completion if the earth resistance is not obtained the earthing will be redone at no extra cost.

M & L in replacement of earth continuity conductor or main earthing lead of copper strip 20 x 3 mm size fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required complete all as specified and directed.

verma enterprises

Vijay Electricals