10kV 12kV High-voltage Vacuum Circuit Breaker Three-position Indoor Vacuum Combination Vacuum Circuit Breaker

This series indoor high-voltage three-position vacuum circuit breaker has excellent electrical and mechanical properties, reliable and stable mechanism and long service life. The main circuit adopts solid-sealed poles, which improves the environmental adaptability and insulation reliability of the circuit breaker; the reliable mechanical and electronic performance, and the extended mechanical and electronic life make the maintenance-free circuit breaker possible. It can be used in 3.6-12kV power system, as a power grid equipment, a protection box control unit designed by industrial and mining enterprises, and is suitable for various loads of different natures, frequent operations, and multiple short-circuit currents. The product has a complete mechanical and electrical interlocking device, with extremely high operational stability and reliability, ensuring the safety of operators and equipment, and ensuring the safety of electricity.

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10kV 12kV High-voltage Vacuum Circuit Breaker Three-position Indoor Vacuum Combination Vacuum Circuit Breaker

Electrical Products

Specifications
Technical Parameters
Dimensions

Specifications of Integrated 10kV 12kV Vacuum Circuit Breaker

Using solid-sealed pole technology.

◆ The 10kV vacuum circuit breaker adopts modular design: frame structure, high-performance miniaturized high-voltage electrical products integrated with isolating switch, solid-sealed vacuum circuit breaker, grounding switch, sensor, interlocking mechanism and operating mechanism.

◆ The size of the suitable cabinet is (500×1000×1800)mm.

◆ Rotary isolating switch with visible fracture after opening.

◆ There is a forced mechanical interlock between the isolating switch, circuit breaker and grounding switch to prevent misoperation.

◆ The circuit breaker adopts a modular operating mechanism, which can be replaced or repaired independently, and has good interchangeability. Manual operation can be used, and AC and DC energy storage operation can also be selected. Realize remote control.

◆ The cabinet door and grounding switch are designed with reliable interlocking structure to ensure the safety of operators

Traditional high-voltage fixed switchgear XGN2 or XGN66, etc., need to install isolation switch, grounding switch, current transformer, sensor separately in the complete plant, install and debug mechanical interlock, the process is complicated, labor-consuming, high requirements for manual technology, use after this product is equipped with a multi-function VCB breaker, the switch body has isolation stations, circuit breaker stations, and grounding stations, which are more integrated and unified, and the installation is simple, fast, convenient and reliable.

Technical Parameters of 10kV 12kV Three-position HV Vacuum Circuit Breaker

No	Item	Unit	Data
1	Rated voltage	kv	12
2	(1mm) Rated short-time power frequency withstand voltage: phase-to-phase/fracture		42/48
3	Rated lightning impulse voltage (peak value) phase-to-phase, fracture		75/78
4	Secondary circuit power frequency withstand voltage (1min)	V	2000
5	Rated frequency	Hz	50
6	Rated current	A	630 1250
7	Rated short circuit breaking current	kA	20	25	31.5
8	Rated peak withstand current	kA	50	63	80
9	Rated short-circuit making current	kA	50	63	80
10	4s rated short-time withstand current	kA	20	25	31.5
11	Rated short-time current duration	s	4
12	Rated single/back-to-back capacitor bank open current	A	630/400
13	Rated capacitor bank closing inrush current	kA	12.5(Frequency not more than)
14	Rated short-circuit current breaking times	times	30
15	Mechanical life (isolating switch/circuit breaker/earthing switch)		3000/10000/3000
16	Allowable cumulative thickness of moving and static contacts	mm	3
17	Rated closing operating voltage	V	AC24/48/110/220	DC24/48/110/220
18	Rated opening operating voltage	V	AC24/48/110/220	DC24/48/110/220
19	Rated voltage of energy storage motor	W	AC24/48/110/220	DC24/48/110/220
20	Rated power of energy storage motor	s	70
21	Energy storage time	mm	≤15.9
22	Contact Spacing	mm	±13.5
23	Overtravel	mm	±1
24	Contact closing bounce time	mm	≤2
25	Asynchrony of three-phase opening and closing	ms	≤40
26	Opening time (constant voltage)		≤60
27	Closing time (constant voltage)
28	Average opening speed (contact just opened ~6mm)	m/s	0.9~1.3
29	Average opening speed (contact just opened ~6mm)	m/s	0.5~1.1
30	Contact opening rebound value	mm	≤2
31	Contact closing contact pressure	N	2400±200 ( 20-25kA ) 3100±200 ( 31.5kA )
32	Nominal Operation Sequence		03s-C0-180s-C0