Vacuum embedded pole for vacuum circuit breaker 24kV EEP-24/2000-31.5
Model No: EEP-24/2000-31.5
Vacuum embedded pole 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 embedded cylinder
MAIN TECHNICAL SPECIFICATION UNIT SPECIFICATION 2000 Rated voltage kV 24 Rated current A 2000 Rated frequency Hz 50/60 Short-duration（1min） power frequency withstand voltage kV 65(79) Lightning impulse withstand voltage kV 125(145) Rated short-circuit breaking current kA 31.5 Rated peak withstand current kA 80 Rated short-circuit making current kA 80 Rated short-time withstand current kA 31.5 Rated duration of short-circuit S 4 Rated breaking current of single capacitor bank A 400 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 20 Mechanical endurance Time 10000 Contact self-close force N 100±50 Force required to hold contacts open at full stroke N 200±50 Circuit resistance at lower limit of rated contact force ≤ 20 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 2000 Clearance between open contacts mm 13±1 Average opening speed m/s 1.30±0.2 Average closing speed m/s 0.7±0.2 Rated contact pressure N 4500±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 vacuum embedded pole
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 vacuum embedded pole,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,vacuum embedded pole are therefore introduced and now become one of the most applicable ways in the field of medium voltage breakers either at home or abroad.
vacuum embedded pole for vacuum circuit breaker 24kV EEP-24/2000-31.5
We are specialty on providing medium voltage and high voltage circuit breaker and switchgear components, such as 12KV, 24 KV, 36KV and 40.5KV vacuum embedded pole,insulated operating rod,secondary plug socket,counter,circuit breaker board,circuit breaker panel Components apply on 630A, 1250A, 2500A, 3150A and 4000A VS1 (ZN85-40.5) circuit breaker and KYN28A-12 and KYN61 high voltage switchgear.
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