maintenance and repair works: testing of equipment installed at 33 / 11 kv power substation.- testing of 33 / 11 kvs.s. it includes primery injection test of c.t. •to test tripping of pannels on actual load repairing of digital relay of 11 kv panel relay repairing includes- cleaning of contacts •replacement of damage part of digital relay and 2 testing . after repairing re-installation of relay and proper testing or protection ( if relay found damage during testing ) repairing of earth fault and over cuurent relay of 11 ky panel relay repairing includes - cleaning of contacts replacement of damage part of 3 earth fault and over cuurent relay and testing after repairing re-installation of relay and proper testing of protection ( if relay found damage during testing ) to test 8 repair electrical wiring of 11 ky pannels and to replace 4 damaged amp. meter and volt meter. ( if found damage during testing ) to repair damaged electrical tnpping via inserting rated current at primery site or incoming and out going feeder of 33 / 11 kv sub station and to test tripping through relay.