Preventive and Breakdown maintenance of HT and LT breakers, Transformers, Underground cables in Factory for two years

Maintenance of HT & LT Breakers, HT & LT Capacitor Banks, DC Tripping Units, HT & LT underground cables, dusting and cleaning of substations as per the scope of work mentioned in Annexure - A

Transformer oil filtration to improve dielectric strength of oil with High Vacuum Filter machine of capacity 2400 LPH or more. The filter unit shall filter Transformer oil to achieve BDV of 60 KV or more. The party shall have authorisation from the licensing authorities to test and issue the test certificates. The party shall issue transformer oil test certificates as per IS 6792. The job also includes filling of the transformer if low oil level. The transformers are located at various locations in the factory. The transformer of various capacities from 1000 KVA to 17000 KVA will be given for filteration as per the availability. Power Supply will be provided by BHEL Free of cost

Transformer oil BDV Testing before and after Transformer oil filteration. Reports of Transformer Oil BDV to be given before Filteration. (Total quantity of Transformers as per Annexure - 1). The lab issuing the test report should be certified by NABL and should have authorisation given by the CEIG for issuing test certificated on BDV. The authorisation letter should be submitted at the time of test reports

Transformer oil acidity testing charges before and after filteration. (Total quantity of Transformers as per Annexure - 1).This should be done as per IS 1448. The method used should be stated while submitting tender. The lab issuing the test report should be certified by NABL and should have authorisation given by the CEIG for issuing test certificate. The authorisation letter should be submitted at the time of test reports.

Transformer oil testing for moisture content (PPM) as per IS 13567:1992, Tan Delta as per IS: 6262: 1971 before and after filteration (Total quantity of Transformers as per Annexure - 1). The lab issuing the test report should be certified by NABL and should have authorisation given by the CEIG for issuing test certificate. The authorisation letter should be submitted at the time of test reports.

Leakage Arresting of the list of Transformers as per Annexure - 2. The details of the Transformers, type of leakage, make and year of manufacturing. The type of leakage is also given in the annexure. All the required tools required for leakage arresting is under the scope. All the materials required for Leakage arresting are under the scope of the vendor. Gaskets used should be of 70 C grade. Oil seals and O rings are also under the vendor scope

In soil, excavation of 1000mm deep and 500mm width trench, supply & spreading of sand, supply & laying of bricks & shabad stone as per IS:1255 1983 and back filling after laying the cable with marking plates. Existing HT cables are lying in the route. Hence, Contractor has to take additional safety precautions. If any existing cable happens to be damaged during the above excavation, the responsibility lies with the contractor for repair/restoration of cable at free of cost to BHEL.

Engaging earth dozer/ JCB / chain wheel mounted dozer / 10-14 T Hydra Crane / Telescoping type Crane with basket / Sky lift with basket to work, for dozing, levelling, lifting, handling equipment, working at all heights etc., as directed by Engineer-In-Charge. Rate includes Operator, fuel, helpers, slingers etc., including all incidentals for handling the work.

Calibration of the following equipment from any local NABL accredited lab and arranging for calibration certificates: 1) (0-800A) Primary injection test kit of make: RE (weight: 100 kgs approx) 2) (0-100A) Secondary injection test kit of make: Motwane (weight: 20 Kgs approx) 3) 5KV Insulation Resistance tester of make: Megger (weight: 3 Kgs) 4) Digital earth meggar of make: Megger (weight: 2 Kgs) 5) Digital Earth Clamp Meter of make: Motwane (weight: 1 Kg) 6) Digital clamp meter of make: Fluke (Weight: 0.2kg) The job includes arranging for transport to and from the NABL accredited lab from within the factory. The necessary gate passes for entry and exit of vehicles will be arranged by BHEL.

Calibration of Power Analyzer of make: Fluke, model: 435-II