Details: fliteration of transformer oil by engaging filteration machine vehicle mounted/wheel mounted to improve the die electric strength of oil and submitting report / result of die electric strength of oil before and after filteration for the following capacities of transformers note: power supply will be provided by the dept and connected power cables for filteration machine has to be arranged by the contractor. from capacity 500 kva to 2000 kva 11 kv/433 volts capacity 6000 kva 33 kv / 433 volts serviceing of oltc of 6 mva ptr including removing of sludge ,dust particle and tigtening of connectors and operating mechanisium checking for any loose contacts and damages etc and fliteration of transformer oil (700 ltrs) by engaging filteration machine vehicle mounted/wheel mounted to improve the die electric strength of oil and submitting report / result of die electric strength of oil before and after filteration for the following capacities of transformers replacement of silica gel in