22-33kV indoor Air insulated VCB switchboard (with ABB make horizontal draw-out type circuit
breakers – VD4) is designed to meet the specific needs of the Indian market, with key features such as a compact construction and low maintenance.
| PARAMETER | VALUE |
|---|---|
| Type | Indoor Draw-out Type |
| Rated Nominal Voltage | 33kV |
| Rated Highest Voltage | 36kV |
| Rated Normal Current | 630 - 1600 A |
| Rated Frequency | 50Hz |
| Rated Short Circuit Breaking Current | 31.5 kA |
| Rated Short Circuit Making Current | 62.5 kApk |
| Rated PF Withstand Voltage for 1 minute | 70 kV |
| Insulation Level | 170 kVpk |
| Rated Short Time Current | 31.5 kA / 3 sec. |
| Rated Operating Sequence | O – 0.3 sec., CO – 3 Min. – CO. |
| Rated Aux. Supply for Spring charging Motor | 110/230V AC / DC |
| Spring charging motor Rating | 110/230V AC / DC, 250 W |
| Spring charging motor time | < 10 sec. |
| Detail of overload Protection Provided for spring charging motor | MCB / Fuse |
| Rated supply of Tripping / Closing Coils | 24 / 30 / 48 / 110 /220 V DC |
| Power Required for Tripping & Closing Coils | 250 W |
| No. of Poles | 3 |
| No. of Breaks / Pole | 1 |
| Class | Indoor (IP 4x) |
| Application Standards | IEC- 62271-100 , IEC- 62271-200 & IS 3427-1997 |