Egic-高压隔离开关选型手册.pdf

High Voltage disconnectors
The specialists
Members of group
Coelme and Egic:
As specialists, we have been dedicated to one single
activity for over the past several dozen years:
the HV disconnector
As the safety device at the heart of each substation,
the disconnector must:
c preserve the insulation of the network’s 2 parts, even in the case of
exceptional events (earthquakes, short-circuits, operation over-voltages,
lightning) due to the network or to weather conditions
c be capable of operating in the most extreme environmental conditions.
Its dependability is thus primordial, only a specialist can guarantee you this.
The range is the largest on the market: 7 types of devices from 36 to
800 kV and from 1250 to 6300 A, not counting occasional adaptations.
Trustworthy technology…
Switchgear generally conforms to IEC standards. Some versions are also
ANSI compliant and adaptations to other standards are possible.
Conductive materials
c Aluminium: castings and active parts.
c Bare or silver-plated copper for contacts and HV terminals.
Optimised protection: several procedures used
c Rustproofness of the material.
c Hot dip galvanization.
c Zinc iron alloy electrogalvanizing.
c 800 hours of successful testing for salty mist on operating mechanisms
at high technology’s service.
c Optimised co