Dead Tank Circuit Breakers up to 420 kV

The 362-420 kV rated Dead Tank Circuit Breakers (DTB) provide robust performance at a low cost of ownership.  Tested for high transient recovery voltage (TRV) performance applications, mechanical endurance and switching capabilities and designed for the toughest transmission applications. 
 
For shunt reactor protection, Hitachi Energy now offers Dead Tank Circuit Breakers with applied Metal Oxide Varistors (MOVs).  This solution increases the reliability of the breaker by limiting damaging overvoltage’s.

• Line, transformer, reactor and capacitor switching

• Point-on-wave switching

• High seismic applications

• High altitude applications 

• Enhanced safety and simplified maintenance

• Rated up to and including 80 kA with no short-line fault capacitors 

• Slipover current transformers that can be 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

* Single-pole operation also referred to as independent pole operation.