High Voltage Ring Main Unit 12kv Indoor Vacuum Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZN63-12/1250-25
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Open Frame
• Structure: Stationary
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
• Certification: ISO9001-2000
• Applicable Altitude: 2000 Meters Below
• Seismic Rating: 6
• Rated Current: 630A 1250A
• Frequency: 50 Hz
• Mechanical Life: 10,000 Times
• Transport Package: Wooden Box
• Specification: 71*68*51mm
• Origin: Yueqing City, Zhejiang Province, China
• Production Capacity: 150000

Product Description

Certifications

The company's main products
Zhejiang Maiyu Electric Co. , Ltd. is a professional manufacturer, high voltage vacuum circuit breaker

series, indoor high voltage vacuum circuit breaker series, load switch series, lightning arrester series, high

voltage disconnector series, drop fuse series, grounding switch series, cable box series and other

electrical equipment companies, the company is composed of a group of people engaged in electrical

industry for many years, with professional technical research and development and product sales team,

perfect production equipment, integrity management, strict quality

Product Description
Overview:            
            Zn63 (VS1) - 12 series indoor handcart type high voltage vacuum circuit breaker is an indoor switchgear with three-phase AC 5ohz and rated voltage of 12kV. It can be used for the control and protection of industrial and mining enterprises, power plants, substations and electrical facilities, and is suitable for places with frequent operation. The operating mechanism is integrated with the circuit breaker body, which can be used as a fixed installation unit or a special propulsion mechanism to form a handcart unit. The main circuit part can adopt the integral fixed sealing pole to realize the miniaturization, high reliability and maintenance free of the circuit breaker. It can be equipped with kyn28a-12 (GZS) and other middle mounted handcart type switchgear, and the fixed type can also be used for XGN series fixed switchgear.
Use environmental conditions:
A, ambient air temperature: upper limit +40. Lower limit-15 DEG c;
B, altitude: less than 1000m (for higher altitude, is rated insulation level increase);
C, and amplitude: the earthquake intensity is not more than 8 degrees;The daily average value of
D, and air relative humidity≤95%, and the average monthly value≤90%
E, fire, explosion, danger, serious pollution, chemical corrosion and violent vibration.

The main technical parameters :
 

serial number	Projects		unit	data
1	Rated voltage		KV	12
2	Maximum operating voltage		KV	12
3	Current rating		A	630 1250	630,1250 1600,2000 2500,3150		1250,1600 2000,2500 3150,4000
4	Rated short-circuit breaking current (rated thermal stability current - RMS)		KA	20/25	31.5		40
5	Rated short-circuit closing current (peak)		KA	50/63	80		100
6	Rated Peak Withstand Current (Rated Thermal Stability Current - RMS)		KA	50/63	80		100
7	4S rated short-circuit withstand current		KA	20/25	31.5		40
8	Rated insulation level	Working withstand voltage (before and after rated breaking) 1min power frequency withstand voltage	KV	To the ground 42 (fracture 48)
		Edge horizontal impulse withstand voltage (before and after rated breaking) / rated lightning impulse withstand voltage peak		To the ground 75 (fracture 85)
9	Rated thermal settling time		S	4
10	Rated sequence of operations			Minutes - 0.3S-combines-180S-combines
11	Mechanical life		times	10000
12	Rated number of short-circuit interrupting currents		times	50
13	Rated closing voltage of operating mechanism (DC)		V	AC,DC110,220
14	Ratde, Openin, Voltaji, Ben, Opelatin, Mechanism (DE)		V	AC,DC110,220
15	Contact opening distance		mm	11±1
16	Overtravel (contact spring compression length)		mm	3.5±0.5
17	Three-phase splitting, closing bounce time		Ms	≤2
18	Contact closing bounce time		MS	≤2
19	Average opening speed		m/s	0.91.2
20	Average closing speed		m/s	0.59.8
21	Opening time	at the highest operating voltage	S	≤0.05
		at the lowest operating voltage		≤0.08
22	Closing time		S	0.1
23	The resistance of the main loop of each phase		μΩ	630≤50		1250≤45
24	Static and dynamic contacts allow for wear and accumulated thickness		mm	3