Replacement of defective ESP High Voltage Rectifier Transformer 4A6 4D2 5A3 and 5C2 by spare healthy HVR Transformer in ESP of Unit IV and V

De-terminating the power and control cable from High Voltage rectifier transformer, delinking the isolator assemble of rectifier transformer set from the negative terminal insulator housing and removing the rectifier transformer from its bed.

Transporting the spare High voltage rectifier transformer set from repair bay and lifting the transformer to ESP IV top floor by using chain block and assisting to conducting open circuit test and measuring IR value etc.

Erection of the spare rectifier transformer set in place of failed Rectifier transformer bed by using chain block etc., and reassembly terminating power and control cable etc., and testing & commissioning the High voltage rectifier transformer.

Contactor L&T ML2 Spares kit spare contacts

L&T FN 250 Type 250A 500V,3ph

Resistor Board TFR1M ohms 1.5 W

RAYAN AND COMPANY (BID ID -1248519)