Dead Tank Circuit Breaker 123-170 kV
Compact and preset from factory for rapid installation
The 123-170 kV Dead Tank Breakers feature a small footprint and a single piece interrupter with factory aligned contacts that reduce installation and maintenance costs.
Applications
- Line, transformer, reactor and capacitor switching
- Point-on-wave switching
- High seismic applications
- High altitude applications
Why Hitachi Energy?
- Enhanced safety and simplified maintenance
- Rated up to 70 kA with no external line to ground capacitors
- Spring-spring operating mechanism available up to 40 kA
- Slipover current transformers that are added or removed without disassembly, reducing maintenance downtime and eliminating contamination risk
- Widely installed base in all environments and applications
- Global service organization, local everywhere
- 10 year warranty on the HMB operating mechanism for 63 kA breakers
Brief performance data
| DTB up to 170 kV | 145PM40-SD | 145PM63-B | 145PMI | |
|---|---|---|---|---|
| Rated voltage | kV | 123-145 | 123-145 | 123-145, 170 |
| Short-circuit breaking current* | kA | 40 | 50-63 | 40-63, 40-50 |
| Rated current | A | 3150 | 4000 | 4000 |
| Break time | cycles | 3 | 3 | 3 |
| Closing and latching current | kA | 104 | 130-164 | 104-164, 104-130 |
| Lightning impulse withstand level - LIWL | kV | 650 | 550, 650 | 550, 650, 750 |
| Operation type | Three-pole operated | Three-pole operated | Single-pole operated | |
| Operating mechanism | FSA1 | HMB-2 | HMB-1 (3) | |
| MOV | No standard MOV** | External MOV | No standard MOV** | |
| Service conditions | ||||
| - Ambient temperature* | °C | -30 to +40 | -30 to +40 | -30 to +40 |
| - Design altitude* | m | 1000 | 1000 | 1000 |
* Other options available, contact factory for additional information.
** Available by request.
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