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GL 314 BPS
Live tank by-pass switch for series capacitor bank applications
Fast Closing By-Pass Switch

GE’s GL 314 By-Pass Switch (BPS) is designed to close very fast and protect series capacitor banks in case of a fault in the overhead lines. It is equipped with excelled live tank circuit breaker technology such as the third-generation self-blast interrupter chambers and spring-operated mechanisms (FK). These field–proven interrupter chambers operate on the optimized self-blast principle. The FK3 type mechanisms equip the entire range of circuit breakers with more than 180,000 references worldwide.

The GL 314 BPS is field-proven and time-tested, providing high mechanical endurance and very low restrike probability according to IEC 622271-100 class M2 & C2. GE’s live tank circuit breakers provide a high level of reliability, even under extreme conditions and climates, and allow for quick, easy installation and commissioning with long intervals between maintenance.

GE Advantage

High Quality Components

The GL 314 BPS live tank circuit breaker provides high reliability based in part on high quality components, including:

  • Three pole operating design
  • One self-blast interrupting unit with guard rings at  upper and lower positions
  • Supporting column is composed of two to four insulators (depending on the voltage to ground/earth)
  • Spring mechanism FK3 equipped with a position indicator visible from the outside
  • Field-proven, temperature-compensated density monitor with two-stage transducer and three-color dial
  • Easy access to the SF6 filling connection (type DILO)
  • Sealings suitable for temperatures down to -50 °C
  • Hot-dip galvanized steel parts and mechanism housing made completely of aluminum

Optional Components

  • Standard low voltage equipment provided, additional equipment is available
  • Composite insulators are available
  • Seismic dampers for high seismic request can be provided
  • Pressure relief system for passive protection of both substation and personnel
  • CBWatch: compact and modular circuit breaker monitoring solution

Installation and Maintenance

  • Preset at factory before shipping; no adjustments necessary during installation and commissioning
  • Disassembly of interrupter chamber without removal of entire pole column possible

Advanced Testing

The by-pass switch meets the requirements of national and international standards. This has been confirmed by comprehensive type tests according to the latest versions of IEC standards.

Certified Quality

GE's quality (ISO 9001:2008), environmental (ISO 14001:2004) and occupational health and safety (OHSAS 18001:2007) management systems determine the development and production procedures for the high voltage switches.


Network frequency Hz 50 / 60
Insulation level
      Up to 170 kV roted voltage across the by-pass switch
      Up to 800 kV rated voltage to earth


Operating times
      Rated closing time
      Rated opening time


28 +/- 2
Rated making current kAp 120
Insertion current A 5,000
Insertion voltage kVp 300
      With breaker open
      with breaker closed
C - 0.2 s - OC - 15s
OC - 10s - OC
* Standard value, for other, please contact us