12kv Indoor Medium Voltage Side Installation (ZN83) Vacuum Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Insert
• Structure: Vcb
• Model NO.: Zn83-12kv
• Poles Number: 3
• Type: Vacuum Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), Handcart/Fixed
• Certification: ISO9001-2000, CE, CCC, GB
• Power Frequency Withstand Voltage: 42kv
• Lightning Impulse Withstand Voltage: 75kv
• Clearance Between Open Contact: 10-12mm
• Over Travel: 2.5-3.5mm
• D.C Compoent: 50%
• Transport Package: Plywood Case
• Specification: 0.5m3
• Trademark: VACEM
• Origin: Wenzhou, China
• HS Code: 85352100

Product Description

1.General description 

    ZN83-12KV series of indoor M.V. VCB with lateral operating mechanism used spring to storage energy.The operating mechanism can be operated by two ways:by manual and electromotive operation.The characteristics is accordance with IEC standard 62271-1 00:2001 M.V. AC circuit breaker,JB3855-1996 3.6-4.5kv indoor AC M.V. circuit breaker and GB1984-2003 M.V. AC circuit breaker.

2.Product characteristic

   Taking different functional units as the dividing line to realize the modular design.

   The integrated and optimized design minimizes the intermediate realization link of the functional unit, and the overall mechanism only has more than 70 parts.
   There is no adjustment link in the mechanism to minimize the professional requirements for maintenance personnel.
   The whole series of products are easy to operate.
   Small mechanical operation vibration.
   Mechanism with manual energy storage handle.
   Fast replacement of wearing parts without special tools.
   The whole series of mechanisms have passed the verification of 72 hour salt spray test.

3.Simple and reliable structure
 

   Less closing interlocking parts, convenient integrated installation, effective prevention of false closing.
   The opening adopts friction type structure, with small wear and failure rate, so as to improve mechanical life.

4.Main technical parameter
 

Item	Unit	Data
Rated voltage	kV	12
Rated power frequency withstand voltage	kV	42
Rated lightning impulse withstand voltage	kV	75
Rated frequency	Hz	50
Rated current	A	630		1250		1600
Rated short-circuit breaking current	kA	20		20
		25		25		25
		31.5		31.5		31.5
				40		40
Rated peak withstand current	kA	50		50
		63		63		63
		80		80
		100		100
Conductive circuit resistance of each phase	μΩ	≤40			≤35
Clearance between open contact	mm	11±1
Over travel	mm	3±0.5
Contact bouncing duration at closing opening	ms	≤2
Out of simultaneity of CO operation of three poles	ms	≤2
Opening time	ms	≤50
Closing time	ms	≤100
Average opening speed	m/s	0.9~1.3
Average closing speed	m/s	0.4~0.8
D.C component		50%

 

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