Dead Tank Circuit Breakers up to 245 kV

A complete range of Dead Tank Circuit Breakers (DTB) at 245 kV provide options for applications with higher than standard asymmetry requirements (X/R ratio) and the highest short circuit capacity in the industry at 90 kA. Utilizing technology pioneered by Hitachi Energy and used across the industry today, the robust Dead Tank Circuit Breaker line features slipover current transformers and requires no capacitors up to 63 kA. 
 
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

• Extreme 90 kA short circuit interrupting ratings and high asymmetrical fault capabilities

• Enhanced safety and simplified maintenance

• Rated up to and including 63 kA with no external line to ground capacitors

• Slipover current transformers that are added or removed without disassembly, reduce maintenance downtime and eliminate 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; Three-pole operation also referred to as gang operationt.
** Electrically ganged.