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| Tender ID | 4431602 |
|---|---|
| Organisation Name | Central Coalfields Limited |
| Tender Brief | Corrigendum : Testing And Calibration Of Circuit Breakers, Power Transformers, Protection Relays, Measuring Instruments, Earth Pits, Transformer Oils Etc. Installed In Gidi C Colliery Under Argada Area. |
| Last Date For Submission | 12th Jun, 2026 |
| Opening Date | 13 Jun, 2026 |
| Document Cost | 0.00 |
|---|---|
| EMD | 10900.00 |
| Estimated Cost | 864881.00 |
| City | Ramgarh |
|---|---|
| State | Jharkhand |
| # | Item | Qty | Units |
|---|---|---|---|
| 1 | Testing of 3 MVA, 11KV/3.3KV main power transformer- i) Insulation Resistance Test-HT to LT, HT to Earth & LT to Earth. ii)Vector Group Test iii)Polarity Test. iv)Magnetic Balance Test. v)Turn Ratio Test vi)Magnetizing Current Measurement and vii)Winding Resistance Measurement. | 1.00 | No. |
| 2 | Testing of Neutral Grounding Resistance - i) Insulation Resistance Value and ii) Neutral Resistance Value | 1.00 | No. |
| 3 | Testing of Circuit breaker which includes IR values ( open and closed conditions), Contact resistance incl. dynamic contact resistance measurement, CB timing test, Coil resistance test and Hi-Pot test. | 9.00 | Nos. |
| 4 | Testing & calibration of following Protection relays by secondary injection method installed in 11KV/3.3KV VCBs: 3O/C+1E/F Relay, Earth leakage relay with CBCT. | 9.00 | Nos. |
| 5 | Testing of HT DOL Starter i) Insulation Resistance Values Open condition and closed Condition, and ii) Contact resistance incl. Dynamic Contact Resistance Measurement | 2.00 | Nos. |
3 Days Left