+86 021 67109909     +86 18017809222
All Categories

Home > Products > Embedded Pole

  • Embedded Cylinder For Vacuum circuit breaker 24kV EEP-243150-315
  • Embedded Cylinder For Vacuum circuit breaker 24kV EEP-243150-315

Embedded Cylinder For Vacuum circuit breaker 24kV EEP-243150-315

Description:

Embedded cylinder,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: EEP-24/3150-31.5 

embedded cylinder has the following advantages

1.the traditional packaged very column, compared to solid seal pole column part number a large number of reducing, conductor lap surface

 by six group reduced to 3 groups, connecting bolt by eight reduced to 1 ~ 3, (see chart 7) simple structure greatly improved the reliability 

of the circuit breaker

2.Due to the vacuum arc extinguish chamber was embedded into solid material, so don’t need to do any further processing, solid seal pole column

 can achieve a high dielectric strength; Vacuum arcing chamber was embedded into solid materials, extremely column external environment on 

vacuum arcing chamber’s influence was reduced to the least

Parameters of embedded cylinder 

MAIN TECHNICAL SPECIFICATION UNIT SPECIFICATION
3150
Rated voltage kV 24
Rated current A 3150
Rated frequency Hz 50/60
Short-duration (1 min) 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 210±50 
Force required to hold contacts open at full stroke N 340±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 ≤ 
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
3150
Clearance between open contacts mm 13±
Average opening speed m/s 1.40±0.2 
Average closing speed m/s 0.7±0.2 
Rated contact pressure N 4500±200 
Contact bouncing duration at closing operation ms ≤ 
Out of simultaneity of contact closing and opening ms ≤ 
Bouncing back amplitude of opening contact mm ≤ 

 

Information for embedded cylinder

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 embedded cylinder,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,embedded cylinder 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 Embedded cylinder for vacuum circuit breaker 24kV EEP-24/3150-31.5

Contact Us