VACUUM INTERRUPTER

 

vaccum interrupter

 

Rating:

Rated Voltage up to 52 kV Short circuit current up to 50 kA

Rated currents up to 4000 A

30.000 mechanical operations and 20,000 electrical operations cycles for circuit breakers

2.5 million operations cycles for contactors

Applicable Standards

IEC 62271-100 Also meets ANSI standard.


General Information:

     It is an advanced and reliable working process.  100% imported raw materials like Copper-Chromium contact materials are used.  Metal bellows with long life time is used to  ensure 30,000 operations of  the vacuum interrupter.The contact in vacuum are not subjected to impurities or contamination on their surface.  Special treatments are used, so that the contacts have good surface quality and high conductivity. These features increases the dielectric strength which is inline with the IEC standards. All these features have contributed to a low inside resistance of the interrupters ranging from 10 to 15 micro ohms. The result is, low temperature rise during the long operation of the interrupters.

One-shot brazing technology is used to achieve reliable braze joints. The brazing seam is not vulnerable to ageing  and hence increases the quality and life time of then interrupter. This technology has lower leakages than those brazed with conventional technology. High vacuum tightness is therefore ensured over the entire life span of the vacuum interrupters. 

Advantage

  • Axial magnetic field.
  • Single shot brazing technology.

  • High short-circuit breaking currents

  • High dielectric performance

  • Very low chopping currents

  • Minimal contact resistance

  • Negligible contact erosion

  • Suitable for auto-reclosing cycles (O-0.3s-CO-15s-CO-15s-CO-15s-CO) for vacuum circuit breakers and (O-0.3s-CO-2s-CO-2s-CO-5s-CO) for pole mounted reclosers. 

Application

  • Circuit breaker - Primary distribution - Secondary distribution
  • Contactors
  • Reclosers
  • Special high speed switches
  • Railway application

 

Model Rated Voltage in kV Rated Current in A Short Circuit Current in kA BIL
Breaking Making
G1 12 1250 20 50 12/35/75
G2 12 1600 25 62.5 12/35/75
G3 12 2000 31.5 80 12/35/75
G4 12 2000 40 100 12/35/75
G4-B 12 3150 40/44 100 12/35/75
G4-50 12 4000 50 125 12/35/75
G5 36 2000 25 63 36/70/170
G5-B 36/40.5 2500 31.5 80 36/70/170
G7 27.5 2000 20 50 27.5/95/185
G8 7.2 450 3.6 4.5 7.2/20/60
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