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| 1 | Providing Services, Testing, and Trial of Protective Relays TG Set and Switchyard at HBL Plant Sugauli as per the below scope & technical specifications and attached tender document: |
| 2 | 20 MW, 11 KV TG SET 1. Testing of protective and auxiliary relays of the TG relay panel.2. Testing of insulation resistance (IR), resistance, knee point, and ratio test of current transformers (CT).3. Testing of insulation resistance (IR), resistance, and ratio test of metering and protection potential transformers (PT).4. Testing of insulation resistance (IR), resistance, and ratio test of the excitation transformer.5. Testing of differential stability by primary injection.6. Ratio test of neutral grounding resistor (NGR) CTs by primary injection.7. Testing of metering functions of TG panel by secondary injection.8. Testing of the synchronizing scheme of the TG vacuum circuit breaker (VCB) by secondary injection.9. Testing of insulation resistance (IR), polarization index (PI), and winding resistance of the alternator.10. Checking of the exciter and the diodes of the alternator exciter.11. Testing of insulation resistance (IR) of HT cable, NGR panel, and LAPT panel.12. Testing of insulation resistance (IR) and capacitance of surge capacitor.13. Testing of insulation resistance (IR) of the lightning arrestor.14. Testing of earth resistance (maximum 2 earths).15. Testing of the protective system including the tripping circuit of the breaker, by secondary injection test kit.16. Testing of insulation resistance (IR) and operation of TG breaker. 17. Carried out calibration and testing of protection relays as per standard procedures. |
| 3 | Switchyard Relay Panel Testing1. Testing of protective and auxiliary relays of the transformer and switchyard protection system.2. Testing of current transformers (CT) and potential transformers (PT).3. Testing of transformer protection devices by simulation, including Buchholz relay, winding temperature indicator (WTI), oil temperature indicator (OTI), pressure relief valve (PRV), and oil surge relay (OSR).4. Magnetic core balance test of transformer.5. Transformer ratio test.6. Transformer winding resistance test.7. Insulation resistance (IR) and polarization index (PI) test of transformer.8. Insulation resistance (IR) test of 11 kV cables connected to the transformer.9. Insulation resistance (IR) test of 11 kV breaker of transformer.10. Transformer differential protection relay testing.11. Grid islanding protection relay testing.12. Distance protection relay testing.13. Metering test (voltage, amperes, frequency – VAF) by secondary injection test kit. |
| 4 | Providing Services of Onsite Calibration/Accuracy Testing of Secure Make Energy Meter Installed at Lauriya as per the below scope & technical specifications and attached tender document: |
| 5 | TESTING OF 20 MW, 11 KV TG SET1. Testing of protective and auxiliary relays of the TG relay panel.2. Testing of insulation resistance (IR), resistance, knee point, and ratio test of current transformers (CT).3. Testing of insulation resistance (IR), resistance, and ratio test of metering and protection potential transformers (PT).4. Testing of insulation resistance (IR), resistance, and ratio test of the excitation transformer.5. Testing of differential stability by primary injection.6. Ratio test of neutral grounding resistor (NGR) CTs by primary injection.7. Testing of metering functions of TG panel by secondary injection.8. Testing of synchronizing scheme of the TG vacuum circuit breaker (VCB) by secondary injection.9. Testing of insulation resistance (IR), polarization index (PI), and winding resistance of the alternator.10. Checking of the exciter and the diodes of the alternator exciter.11. Testing of insulation resistance (IR) of HT cable, NGR panel, and LAPT panel.12. Testing of insulation resistance (IR) and capacitance of surge capacitor.13. Testing of insulation resistance (IR) of the lightning arrestor.14. Testing of earth resistance (maximum 2 earths).15. Testing of the protective system including tripping circuit of the breaker, by secondary injection test kit.16. Testing of insulation resistance (IR) and operation of TG breaker.17. Carried out calibration and testing of 15 no. of P111 protection relays as per standard procedures. |
| 6 | SWITCHYARD RELAY PANEL TESTING1. Testing of protective and auxiliary relays of the transformer and switchyard protection system.2. Testing of transformer protection devices by simulation, including Buchholz relay, winding temperature indicator (WTI), oil temperature indicator (OTI), pressure relief valve (PRV), and oil surge relay (OSR).3. Magnetic core balance test of transformer.4. Transformer ratio test.5. Transformer winding resistance test.6. Insulation resistance (IR) and polarization index (PI) test of the transformer.7. Insulation resistance (IR) test of 11 kV cables connected to the transformer.8. Insulation resistance (IR) test of 11 kV breaker of transformer.9. Transformer differential protection relay testing.10. Grid islanding protection relay testing.11. Distance protection relay testing.12. Metering test (voltage, amperes, frequency – VAF) by secondary injection test kit.13. Ratio test of current transformers (CT) by primary injection.14. Testing of earthing system (maximum 5 earth pits).15. Testing of the protective system including tripping circuit of the breaker by secondary injection test kit. Please Enable Macros to View BoQ information |
