Indoor Vacuum Circuit Breaker for 12kv High Voltage Electrical

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: Indoor Vacuum Circuit Breaker for 12kv High Voltag
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
• Certification: ISO9001-2000
• Rated Voltage: 12kv
• Rated Current: 1250A, 1600A
• Protection Level: Such as IP4X
• Transport Package: Wooden Carton
• Trademark: JECSANY
• Origin: China
• HS Code: 850422000
• Production Capacity: 5000

Product Description

The ZN63(VS1) indoor high - voltage alternating current vacuum circuit breaker, with a frequency of 50Hz and a rated voltage of 12kV, is applicable to the electrical equipment control and protection in industrial and mining enterprises, power plants, and substations, especially in places that require frequent operation. It can be either fixed in a switch cabinet or installed on a handcart.

Featuring stable performance and convenient installation, it serves as the best choice for the control and protection of high - voltage power transmission and distribution systems.
1 Technical parameters

Item		Unit	Reference value
Rated voltage		kV	12
Rated insulation level	Power frequency voltage (when losing a circuit)	kV	Breaker 42
	Impulse withstand voltage (when losing a circuit)	kV	Breaker 75
Rated frequency		Hz	50/60
Rated current		A	630/1250/1600/2000/2500/3150/4000
Rated short-circuit breaking current		KA	20,25,31.5,40
Rated short-circuit making current (peak value)		KA	50,63,80,100
Rated short-time withstand current		KA	20,25,31.5,40
Rated withstand current (peak value)		KA	50,63,80,100
Required operation sequence			O-0.3s-CO-180s-CO
Rated short-circuit duration		s	4
Times of making-breaking with the rated short-circuit current		Times	30
Mechanical life		Times	10000
Weight		kg	110

2 Mechanical parameters

Item	Unit	Reference value
Gap of contacts	mm	11±1
Contact overtravel	mm	3.5±0.5
Average making speed	m/s	0.6±0.2
Average breaking speed	m/s	1.1±0.2
Bounce time in contact making	ms	≤2
Non-synchronous making/breaking of contact	ms	≤2 ≤3(40kA)
Resistance of the circuit of each phase	μΩ	≤80
Permissible total wear thickness of the moving/fixed contact	mm	3

Product standards	1.IEC 62271-100 High-voltage alternating-current circuit-breakers 2.GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards 3.GB 1984 High-voltage alternating-current circuit-breakers 4.GB311.1 Insulation co-ordination for high voltage transmission and distribution equipment
Ambient condition	1. Altitude:≤1000m; 2. Ambient temperature: - 40ºC-+40ºC (below 35C within 24 hours) 3.Relative humidity: ≤95% (daily average) or≤90% (monthly average)

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