Servicing of HT LT Switch gears, oil filtration 4X1000 kVA outdoor type Transformers, OLTC in Substations 1 and 2 along with providing single-phase preventer and maintenance of point of supply in CSIR-CECRI Campus, Karaikudi

Amount

Providing and fixing M.V. danger/Men at work notice plate of 200 mm X 150 mm, made of mild steel, at least 2 mm thick, and vitreous enameled white on both sides, and with inscription in single red colour on front side as required.

Providing and fixing H.T. danger notice plate of 250 mm X 200 mm, made of mild steel, at least 2 mm thick, and vitreous enameled white on both sides, and with inscription in single red colour on front side as required.

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade :

One or more coats on old work

Painting with black anti-corrosive bitumastic paint of approved brand and manufacture to give an even shade :

One or more coats on old work

Filtration of transformer oil through Stream Line filter unit to improve the Di-electric Strength to the optimum value for 1000 KVA OUTDOOR Transformers.

Replacing the existng Dehydrating Silica Gel and Filling Fresh Silica Gel Suitable for the Transformers.(Actual quantity will be billed based on the site requirement)

Testing of 1000 kVA Transformer Insulation Resistance value, Inductance value,Voltage ratio, Magnetic balance test,Buchholz relay,checking of marshalling box connections for proper opeartions and checking control circuit wirings for proper operations, Checking for any oil leakages and arresting the same with suitable measures including replacing the gaskets and other related accessories etc,disconnection of primary HT cable and secondary bus duct and re fixing as per original conditions and ensuring the proper operation of the equipment as required.Make:CG power

Charges for Testing and issuing of test Certificates with suitable calibrating testing kit for testing of Transformer's OTI (Oil Temperature Indicator) and WTI (Winding Temperature Indicator).

Supply of fresh filtered and tested transformer oil of adequate BDV for topping up the same in transformers etc., as required as per IS:335/1993. (Actual quantity will be billed based on the site requirement)

Filteration of On Load Tap Changer by flushing with transformer oil using stream line filter unit including Removing and Refilling of transformer oil and Replacing top Cover Cork Rubberized Gaskets of existing 1000kVA Transformer.

Overhauling and Maintenance of 22 kV, HT VCB for the following :- Removing the existing VCB 800A 4 Pole EDO (Electrical Draw Out) dismantiling and reassembling the parts as required for maintenance purpose including the primary and secondary contacts,clening the dust, checking and servicing the operating mechanism for a smooth and trouble free operations,lubricating, testing the contact resistance, its closing time etc to determine the wear and tear of the same. Measure the insulation resistance values for all poles with open condition and closed condition.Make:ABB

Chargers for testing & issuing of test Certificates with suitable mesuring kit for HT VCB panels at SS-1 &Ss-2 for the following : a) Over Current, Earth Fault Relay and short ckt test b) Auxiliary Relay c) Master Trip Relay d) Under Voltage / Over Voltage Relay. e) Control circuits checking for proper functioning and rectifying if any at the HT & OLTC panels as required

Overhauling and Maintenance of LT ACB for the following Removing the existing LT ACB 2000/1250/1000/800A, 4 Pole EDO (Electrical Draw Out) or MDO (Mechanical Draw Out) dismantiling and reassembling the parts as required for maintenance purpose including the primary and secondary contacts,clening the dust, checking and servicing the operating mechanism for a smooth and trouble free operations,lubricating, testing the contact resistance, its closing time etc to determine the wear and tear of the same. Measure the insulation resistance values for all poles with open condition and closed condition. Make: L&T(21 Nos), C&S(2 Nos) and Legrand(2 Nos).

Charges for Testing and issuing of test Certificates with suitable testing kit for LT ACB 2000/1250/1000/800A panels for the following: a) Over Current, Earth Fault Relay and short circuit test. b) Auxiliary Relay. c) Master Trip Relay d) Under Voltage / Over Voltage Relay. e) Control circuits checking for proper functioning and rectifying if any at the LT panels as required.

Charges for Testing and issuing of test Certificates with suitable testing kit for Thyristor based 250kVAR LT APFC panels for the following: a) Propoer functioning of the APFC relay along with its protection. b) Thyristor based Relay. c) Capacitors banks. d) Semiconductor based fuse checking. e) Cleaning throughly and carrying out the preventive maintanence as required, replacing the wornout materials, etc.,

Testing of various type of earth electrodes for its ohmic value with earth resistance tester by removing the connections, cleaning them throughly as required Improve the soil resistivity by watering etc., Painting the values of the earth resistence in the respective earth pits along with the date as required including issuing the necessary test certificate for the same in the transformer yard at SS-1 & 2, PoS of CSIR campus.

Point of Supply : Carrying out the preventive maintenance in the Point of supply yard, AB switches, Checking the operations & servicing of the existing LBS, SF6 Breaker, Checking the Lightning arrestors, Drop out fuse, HT conductors for propoer jointing and adusting them as required as per standards/site condition complete in all aspects for satisfacotry operations as required.

Testing and Issuing necessary certificate for BDV Strength of transformer oil etc., as required.

Testing and Issuing necessary certificate from authorised laboratory for the acidity contents of transformer oil etc., as required.

Supply, installation, testing and commissioning of single phase preventer circuit on the OLTC & ACB side of SS-1&2 (consists of 2 Transformeers at each SS) with required accessories such as reputed brand/make single phase preventers(4 Nos per SS), UV coils(2 Nos per SS) of original supplier of ACB's, ,rated capacity identical MCB's(2 Nos per SS), UV/single phase indication LED lamps(2 Nos per SS) of standard colour, Control circuit wirings with adequate rated sqmm (not less than 1.5) of respective colour codes inculding ferruling, providing the modified control circuit drawing adopting the the new one along with the existing ones in co-ordination with the existing panel supplier/commissioning engineer for satisfactory operation as required etc., complete in all aspects as required as per site condition.

Supply and providing rubber hand glouse tested for 33KV as per IS 4770.

Point of Supply: Switchyard blue metal to be topped up ,cleanning and levelling of the yard. Size of blue metal should not be less than 40mm

Supply and installtion of chequered plate as per site condition at SS-1 & old control pannel of thickness not less than 5mm.

Supply and installtion of Rubber mat of size (100X200) cm as per site condition at SS-1 & old control room pannel of thickness as per standard IS 15652.

Transport charges (To& Fro) for the testing kits and the filteration machine to the site for carrying out testing and filteration work as required.

Thirumalai Enterprises