12kv Outdoor M. V. Permanent Magnetic Vacuum Circuit Breaker (ZW32)

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Fixed
• Structure: Vcb
• Model NO.: ZW32-12M
• Poles Number: 3
• Type: Vacuum Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000, CE, CCC, GB
• Rated Current: 630A,1250A
• Rated Short Circuit Duration: 4s
• Short Circuit Making Current (Peak: 50ka
• Mechanical Life: 30000 Times
• Rated Operating Sequence: O-0.3s-Co-180s-Co
• Transport Package: Plywood Case
• Specification: 0.5m3
• Trademark: VACEM
• Origin: Wenzhou, China
• HS Code: 85352100

Product Description

1. General description

     ZW32-12M series outdoor H.V. permanent magnetic vacuum circuit breaker is used in tri-phase electric system of AC 50 Hz, rated voltage 12kV. It is suitable for breaking, closing load current, overload current and short-circuit current, and for substation and industry-mining enterprises or the rural electrical power distribution system.

2. Main functional characteristic

  a. Automatic control function: the circuit breaker has the function of switching status control, three-sect over current protection, three auto-reclosure, as well as RS-485 communication connector to achieve remote-measurement, remote-adjustment, remote-controlling, remote-communication, suitable for different automatic power distribution system.
  b. Permanent magnetic mechanism operation: the circuit breaker adopts the most advanced permanent magnetic mechanism operation in the world, the spare parts without abrasion, the mechanism life achieve 30,000 times, three multiples than common spring mechanism. With reduction 70% on machine spare parts for permanent magnetic mechanism, the reliability of switching improved much highly.
  c. Full-sealed structure design: the vacuum interrupter, mechanism operation and operation link are sealed together inside vacuum circuit base, avoids the condensation pocking for circuit breaker, the product could keep for 10 years with non-maintaining.
  d. Miniaturization structure: the circuit breaker adopts new type compound solid isolated material, make the vacuum interrupter, main galvanic circle, isolation supporting as a group organically to be an integrated embedded pole, ultimately solves the contradiction between vacuum interrupter miniaturization and outside isolation requirement.
  The design of the product is advanced, reasonable, compact structure, non-condensation inside, no pocking of the mechanism.

3.Main technical parameter
 

Item	Unit	Data
Rated voltage	kV	12
Rated frequency	Hz	50
Rated current	A	630,1250
Rated short-circuit breaking current	kA	16, 20
Rated short time withstand current	kA	16, 20
Rated peak withstand current (peak)	kA	40, 50
Rated short circuit duration	S	4
Rated short circuit making current (peak)	kA	50
1min P.F. withstand voltage phase to phase, to earth	kV	42
1min P.F. withstand voltage fracture	kV	48
Lightning impulse withstand voltage phase to phase, to earth	kV	75
Lightning impulse withstand voltage fracture	kV	85
Rated operating sequence	kV	O-0.3s-CO-180s-CO
Rated current breaking times	time	10000
Rated short-circuit current breaking times	time	50
Mechanical life time	time	30000
Secondarycircuit1min power frequency withstand voltage (except for electronic unit)	V	2000

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