Providing and Fixing of Automatic Power Factor Controller APFC at Delhi Regional Centre DRC CSIR NEERI Delhi

(A) Incomers Suitable capacity MCCB Microprocessor base with O/C, S/C, E/L release of TPN 50KA breaking capacity (Ics=Icu), ON, OFF, Trip, R, Y, B - LED Indicating Lamp set along with required Instruments and accessories with extended rotary handle and door interlocking arrangement. Current rating of the 184 DELHI SCHEDULE OF RATES (E&M)-2025 Incomer in ampere shall be APFC Panel rating in KVAR x 1.4 x 1.5 or Nearest higher standards rating.

(B) Instruments & Indications . i) 3-Phase current sensing APFC microprocessor relay/controller, advance 8/12 stages (8 stages for capacity below 100 KVAR and 12 stages 100 KVAR & above) with Communication Ethernet / RS485 / SNMP port open protocol for BMS integration as per approved by Engineering in charge and having display of Phase wise V, A, PF, Cos-Phi, Kw, KVA, KVAR, THD-V , THD-I, harmonics up to 31 level. 3 nos of dual core CT's accuracy class 1, 15VA at incomer of PCC Panel for APFC relay. ii) Auto Manual Selector switch, auxiliary contactors with timer for delay in manual mode. . iii) Digital Multi function meter with LED Display for V, A, PF, KW, KVA, KVAR, THD-V & I, Frequency. iv) Suitable rating control transformer shall be provided for control and indication circuit. . v) All components like control transformer, meter, relay and indicating lamp shall be protected by using suitable rating individual MCB's. vi) Wiring of the control circuit shall be done by using 2.5 sq mm, FRLS/ HFFR 1100 V grade, PVC insulated multi stranded copper control wire.

(C) Bus Bars . 1.3 Amp per Sq.mm,TPN, Electrolytic grade Aluminium bus bar of capacity 1.25 times of incomer rating as per CPWD specification.

(D) Outgoings (APFC Section) . Selection of the capacitors combinations shall be for continuous rating and each capacitor bank shall have suitable capacity Heavy Duty ISI Marked Capacitor, capacitor duty contactor,the capacitor shall be mounted on channel with base of perforated M S Powder coated sheet, connections inter connections etc. and other features as per CPWD Specifications and relevant IS Code having following: . (i) Capacitor bank ratings & stages shall be : (A) 25 KVAR - 1 No . (B) 20 KVAR - 1 No. . (C) 10 KVAR - 3 Nos. . (D) 5 KVAR - 5 Nos. . Note: The combination of the Capacitor may be vary during execution of work considering the site requirement for smooth correction. (ii) Capacitor will be MPP self healing type with discharge resistor, pressure release mechanism. (iii) Since Capacitor Voltage is 525 Volts, thus higher KVAR has to be considered to get rated output at 415 Volts. . (iv) 14% Detuned Reactor of class H insulation & 150% linearity in series with Capacitor.

Supplying armoured cable 3.5 core, 50 sq mm: Armoured cable of XLPE insulated (crss linked) PVC sheathed, armoured with galvanised round / strip steel, 1100 V. grade conforming to I.S. 1554 (part-1) & IS :7098 (part-1), 3½ core 50 Sq. mm. stranded Aluminium conductor.

Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of Above 35 sq. mm and upto 95 sq. mm (clamped with 25x3mm MS flat clamp) following size on wall surface as required.

Supplying and making end termination with brass compression gland and aluminium lugs for3½ X 50 sq. mm (35mm) size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

Earthing with G.I. earth plate 600 mm X 600 mm X 6 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 Meter long etc. with charcoal/ coke and salt as required.

Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as required.