Transformer Installation Testing Commissioning work at akelgarh head works kota

SITC of 11kV 630 Amps 21KA for 3 Sec. SF6 insulated, outdoor duty (IP54), Extensible / Non extensible type Ring main unit (RMU) manually operated in combination of VCB modules and Load Break switch consisting of copper busbar in SF6 insulated stainless steel Outdoor enclosure of thickness of 2 mm and tank of stainless-steel Outdoor enclosure of thickness 3mm with manometer. The HV switchgear and control gear should be confirming to IEC62271-100, IEC-62271-200-2003 & IEC60694-1996. The RMU should be internal arc tested for 21KA for 1Second with IAСAFL classification for both Cable chamber and gas tank as per IEC 62271-200 and LBS to be rated for class E3 as per IEC 62271 -103. Vacuum Interrupter should be same as used during type test of RMU. Each feeder of RMU should have voltage presence indicator. and VCB feeder should consist of 1 no. microprocessor based Self powered numerical relay with over Current/ earth fault & short circuit protection with each VCB feeder, 3 Nos. Protection CT shall be of Burden 2.5VA, ratio 50/1A, Class of Accuracy class 5P10 for O/C and E/F protection for each VCB. Load break switch feeder shall have Fault Passage indicator, Right angle boots for all the feeder Modules, Remote trip, Emergency Stop, Cable cover interlocking, Transformer protection tapo card etc. All the type test certificates as per IEC and CEA from Third party NABL / CPRI / ERDA accredited lab to be submitted. (Cost of RCC Foundation / Steel Structure to be paid Extra)

Extensible 3-way RMU with 1 no. VCB & 2 No. Load Break Switch

Providing & Laying XLPE insulated three core Armoured Aluminium cable for working voltage 11 K.V.(E) confirming IS :7098 P- 2 with H4- Grade electrolytic aluminium conductor confirming to IS: 8130 class-2 of purity >99.6 %, Insulation Screening: Extruded Semiconducting Compound followed by helically wrapped Copper Tape, round / flat strip armouring of cables, Inner / outer sheath PVC type ST-2 confirming to IS:5831 in existing RCC Pipe / Hume pipe / Stoneware Pipe/ PVC pipe/ open duct/cable trench / Cable tray (with cable tie) including testing etc. as required of following size.

3 core 185.0 Sq.mm

Providing & making heat shrinkable type indoor/outdoor/straight through terminations/ joint kit suitable for 11 KV / 33 KV (Earthed) cable with required components, preparation of cable ends. Type test report should be as per IS13573:2011 including testing etc. as required of following sizes.

11 KV End Termination Kit Indoor typе 3 core 120/150/185 Sq.mm

SITC of Copper Bonded rod Earthing with high tensile strength (more than 600 N / sq.mm low carbon steel rod molecularly bonded with Copper thickness (250 microns) and confirming to UL 467 of following size and length and as per point mentioned (a), (b), [c), (d), (e) below :- (a) Bore a hole of dia. 100 mm of required length, Place the rod in the centre of Hole (b) Earth enhancing compound to ensure the moisture content and electrical conductivity, 25 kg for 3000 mm. The compound shall be tested form NABL accredited lab for low resistivity (less than 0.12 Ohm - meter) & high conductivity in nature with carbon as a major content in accordance with IEС 62561-7 (c) Connect the rod with copper Strip/Conductor/Wire with suitable clamp made from tinned copper and SS 304 Bolt

25 mm thick and 3 Mtr. Long

Providing & Laying XLPE insulated & P.V.C. sheathed Armoured Aluminium cable confirming to IS: 7098 P -I of 1.1 KV with H4- Grade electrolytic aluminium conductor confirming to IS 8130 of purity >99.6 %, round / flat strip armouring of cables, Inner / outer sheath confirming to IS:5831 in existing RCC / Hume / Stoneware / PVC pipe/ open duct/cable trench / Cable tray(with cable tie) including testing etc. as required of following size.

300.0 Sq. mm 3.5 core