Power Distribution USAPower Distribution USA

Site ExplorerSite Explorer
Close site explorer

Medium-voltage vacuum generator circuit breaker switchgear

Type HB3

Medium-voltage vacuum generator circuit breaker switchgear type HB3 offering for 100 MW to 400 MW machines

HB3 vacuum generator circuit breaker switchgear

Siemens offers a fully customizable stationary type vacuum, generator circuit breaker switchgear tested to IEEE C37.013. Each design is engineered to meet the specific electrical and mechanical application requirements of the project. Download the medium-voltage vacuum generator circuit breaker switchgear type HB3 flyer.

Features and benefits include:

  • All medium-voltage switching components, including the vacuum generator circuit breaker, are mounted on a removable, fully-integrated, compact switching module for each pole

  • Continuous current ratings of 6,300 A, 8,000 A, 10,000 A, and 12,500 self-cooled

  • Interrupting ratings of 80 kA and 100 kA

  • Maximum design voltage up to 24 kV

  • Tested to IEEE C37.013 standard for generator circuit breakers

  • Up to 30 interruptions at rated short-circuit current

  • No SF6 gas for insulation or interruption

  • Pair with Siemens protective relays to provide complete generator protection switchgear

  • Uses the latest developments in vacuum interrupter axial-magnetic-field (AMF) technology

  • Highly reliable vacuum interrupters - MTTF over 53,550 years

  • Highly reliable spring-drive operating mechanism due to use of common type 3AH3 operator platform

  • Over 120,000 type 3AH3 operators produced since 1998 and over 25,000 operators produced per year

  • 10,000 continuous current switching operations

  • Complete switchgear shipped as one final-assembled unit

  • Significantly lower life-cycle costs due to reduced inspection and maintenance costs and maintenance-free, stored-energy (spring) operator

  • Optional start-up disconnector for connection to SFC

  • Connections to generator and step-up transformer using isolated-phase bus (not furnished)

  • Current and voltage transformers available to suit specifications

  • Surge arresters and surge capacitors optionally available.

Did this information help you?