Outdoor
Vacuum circuit
breaker

The overhead line vacuum circuit breakers (VCB) is clearly the most modern and safe product of its kind on today's market. It is built to remain in operation for more than 30 years without major maintenance. The model range is available for 6/15, 22/27 and 33/40kV.

Hughes Power System outdoor vacuum circuit breaker module
  • Non-enclosed switch for extra safety
  • Integrated disconnector for personal safety
  • Operation On and Off with full load without electric power
  • Solid insulated. No harmful SF6 gas
  • Epoxy bushings with silicone surface
  • Frame of "Marine grade" premium stainless steel

HUGHES VCBDESCRIPTION

Hughes VCB outdoor vacuum circuit breaker series is designed and manufactured in Sweden for recloser and sectionalizer applications and as a very reliable and safe alternative to a disconnector / air break switch. 

The vcb vacuum circuit breaker types:

  • OVX. This type of vacuum circuit breaker is designed for recloser applications;
  • LBS. This type of vacuum load break switch is designed for sectionalizer applications or can be used as an alternative to a disconnector / air break switch;
Hughes outdoor vacuum circuit breaker


The ovx vacuum circuit breaker model range:

  • For 6/12kV OVX120 with 12kV bushings, built-in disconnector and voltage sensors on the load side;
  • For 6/15kV OVX121 with extra insulated 27kV bushings and with 1 or 2 sets of voltage sensors on feed and/or load side;
  • For 22/27kV OVX240  with 24kV bushings, built-in disconnector and voltage sensors on the load side;
  • For 22/27kV OVX241 with 27kV bushings and with 1 or 2 sets of voltage sensors on feed and/or load side;
  • For 33/40kV OVX405 with ABB VG10 2000A/20kA 40.5kV vacuum interrupter, and voltage sensors on the load side;

The lbs vacuum load break switch model range:

  • For 6/12kV LBS120  with 12kV bushings, built-in disconnector and voltage sensors on the load side;
  • For 6/15kV LBS121 with extra insulated 27kV bushings and with 1 or 2 sets of voltage sensors on feed and/or load side;
  • For 22/27kV LBS240 with 24kV bushings, built-in disconnector and voltage sensors on the load side;
  • For 22/27kV LBS241 with 27kV bushings and with 1 or 2 sets of voltage sensors on feed and/or load side;
  • For 33/40kV LBS405 with ABB VG10 2000A/20kA 40.5kV vacuum interrupter, and voltage sensors on the load side;
Hughes vacuum circuit breaker

HUGHES VCBADVANTAGES

The VCB vacuum circuit breaker of the latest generation has the following advantages:

  • Low maintenance. Hughes VCBs are built to remain in operation for more than 30 years without major maintenance due to the highest quality materials used in its construction. 
  • Live tank construction (1). It completely eliminates the occurrence of internal arc faults and the risk of explosion or destruction inside the recloser switch tank. That makes it repairable in case one of the poles is damaged. It provides improved cooling of the vacuum interrupters due to unhindered air circulation. It has the increased creepage distance that allows the use of reclosers in an environment with a 4th degree of atmospheric pollution and cleaning of insulation without dismantling;
  • Solid epoxy insulation (2) of bushings and insulators. Silicon coating provides UV protection, is environmentally friendly, does not contain harmful SF6 gas or oil;
  • Vacuum interrupter bottles (2) that can handle 20kA faults for 3s guarantee long term problem free operation in networks with many high current faults;
  • Highest quality stainless steel (3) is used for most of the parts to minimize electrochemical corrosion. The use of stainless steel in accordance with DIN50049 / 3.1B, thanks to its non-magnetic properties, completely eliminates the occurrence of any kind of corrosion, including electrochemical corrosion over the entire life of the product;
  • Spring stored energy operating mechanism (4). It provides turning On and Off the switch module even in the complete absence of power supply (voltage transformer malfunction, full battery discharge);
  • Manual charging (5) of the spring mechanism as well as switch operation On and Off are possible with the help of manoeuvring arms located on a switch body. The spring capacity is enough for the full reclosing cycle (Off - On - Off);
  • Built in disconnector (6) (applicable for 120 and 240 models only) gives visible open points of all three phases for extra safety. The disconnector is synchronized with the vacuum interrupter and cannot be open or closed when the vacuum interrupter is closed;
     
Hughes vacuum circuit breaker

HUGHES VCBINSTALLATIONS

Hughes vacuum circuit breaker

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