| 1 | Testing and calibration of protection Relay | Burnt or defective relays repairing of EE make E-F & O-C Relay as under with all material, labour with TandP.
1.Replacement of all defective components like disc assembly with moving contacts, control spring fixed contact assembly, auxiliary contacts, defective coils, defective electronic components like diodes, resistance, condenser etc with new one of good quality.
2.Varnishing of coils and overhauling of relay thoroughly after cleaning of all ports of relay by CRC.
3.Proper wiring, dressing and ferruling of all wires within relay.
4.Testing and calibration of relay with minimum error limits allowable in relay. | 10 | Job | Ajay Pratap Singh 231219,Obra Thermal Power Plant | 120 |
| 2 | | Primary injection of Switch Gear CT
1. checking of polarity test of new CT if replaced.
2. checking of CT ratio for protection and metering circuit.
3. Finally checking of Switchgear for tripping on fault by injecting O-C and E-F current through main CT. | 30 | Job | Ajay Pratap Singh 231219,Obra Thermal Power Plant | 120 |
| 3 | | Primary injection of Switch Gear PT
1. Replacing 11KV PT by replacing its burnt pole and broken bushing.
2. Checking of polarity test of new PT If replaced.
3. Checking of PT ratio for protection and metering circuit.
4. Checking insulation and winding resistance of PT. | 1 | Job | Ajay Pratap Singh Checking Rectifying Fault 231219,Obra Thermal Power Plant Of Control Panel | 120 |
| 4 | Checking Rectifying fault of Control panel | Checking and Rectifying faults of control panel
1. Checking of all the ampere meters with ampere selector Switch.
2. Checking of all the voltmeter with voltmeter selector switch.
3. Checking of all the indication bulb light ON, Off and trip circuit faulty indications.
4. Checking of all the auxiliary relays like master trip relay etc.
5. Proper wiring, dressing & ferruling of all wires of control and meting circuit.
6. Checking of electrical operation OCM by manually operating live protection relay
7. Checking of all the wiring of CT protection circuit.
8. Checking of all the wiring for metering circuit. | 10 | Job | Ajay Pratap Singh 231219,Obra Thermal Power Plant | 120 |
| 5 | | Repairing of burnt and damaged southern make ratio 200-100-5 at sector 9 taking out the burnt or damaged CT from panel after removing all the connection and recommissioning of parts of panel after cleaning the busbar in proper manner. | 15 | Job | Ajay Pratap Singh 231219,Obra Thermal Power Plant | 120 |
| 6 | | Repairing of burnt and damaged 11KV S-S make oil filled PT with replacement of defective component like backelised paper bushing, porcelain insulators, HRC fuse, Male and Female contacts and rewinding of coils with same gauge a class super enamel copper wire including cleaning and varnish with good quality chemicals testing and calibration with all labour, TandP etc. All materials as noted above will be provided by the contractor at his own cost. | 1 | Job | Ajay Pratap Singh 231219,Obra Thermal Power Plant | 120 |
| 7 | | Complete Annual Overhauling and commissioning of the 33-11 kV circuit breaker installed at different substation in Obra TPS including all material | 10 | Job | Ajay Pratap Singh 231219,Obra Thermal Power Plant | 120 |
| 8 | Painting of control panel | Painting of 11 kV panel, OCBs and switchgear after removal of old paint and rust and applying one coat of red oxide and two coats of super quality synthetic enamel including letter writing with yellow and black background, including all material, labour and TandP complete | 100 | sqmm | Ajay Pratap Singh 231219,Obra Thermal Power Plant | 120 |
