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  • Epoxy Embedded Poles For Vacuum circuit breaker EEP4-12-630-16
  • Epoxy Embedded Poles For Vacuum circuit breaker EEP4-12-630-16

Epoxy Embedded Poles For Vacuum circuit breaker EEP4-12-630-16

Description:

Epoxy embedded poles,or called vacuum interrupter with epoxy resin,is made by casting vacuum interrupters,main circuit conduct and mounting parts with epoxy into an integral part.

  • Product Description

Model No: EEP4-12-630-16

Epoxy embedded poles with epoxy resin,is made by casting vacuum interrupters,main circuit conduct and mounting parts with epoxy into an integral part. The vacuum interrupters, however,should be enveloped well with a slight fold of silicon rubber jacket before that process.

Parameters of epoxy embedded poles

MAIN TECHNICAL SPECIFICATION UNIT SPECIFICATION
630
Rated voltage kV 12
Rated current A 630
Rated frequency Hz 50/60
Short-duration(1min) power frequency withstand voltage  kV 42
Lightning impulse withstand voltage kV 75
Rated short-circuit breaking current kA 16
Rated peak withstand current kA 40
Rated short-circuit making current kA 40
Rated short-time withstand current kA 16
Rated duration of short-circuit S 4
Rated breaking current of single capacitor bank A 630
Rated breaking current of back to back capacitor bank A 400
Rated operating sequence o-0.3S-co180S-co
Breaking operations of rated short circuit breaking current Time 30
Mechanical endurance Time 10000
Contact self-close force N 60±50 
Force required to hold contacts open at full stroke N 160±50 
Circuit resistance at lower limit of rated contact force mΩ  ≤ 45 
Contact limit erosion mm 3
Gas pressure inside vacuum interrupter Pa ≤ 1X10-3 
Partial discharge Pc ≤ 5 
Weight of moving parts Kg
Weight of vacuum interrupter embedded poles Kg

 

Mechanical data required for the matched vacuum switchgear

MAIN TECHNICAL SPECIFICATION UNIT SPECIFICATION
630
Clearance between open contacts mm 8±1 
Average opening speed m/s 1.2±0.2 
Average closing speed m/s 0.8±0.2 
Rated contact pressure N 1500±200 
Contact bouncing duration at closing operation ms ≤ 2 
Out of simultaneity of contact closing and opening ms ≤ 2 
Bouncing back amplitude of opening contact mm ≤ 2 

Information for epoxy embedded poles

From the development of insulations on breakers,it can be divided into three generations:air, composite and solid insulation and so-called solid insulation means epoxy embedded poles,which might represent the great advancement of insulation on vacuum breakers.Since the epoxy can be used to replace the insulating and mechanical supports,the breakers therefore become compact and simple and are able to service under humid and dusty conditions.When the external insulations of miniature chambers in air condition fail to fulfill the requests of specifications,epoxy embedded poles are therefore introduced and now become one of the most applicable ways in the field of medium voltage breakers either at home or abroad.

drawing Epoxy embedded poles for vacuum circuit breaker EEP4-12-630-16

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