VT2A (ZN73C) Series indoor HV Vacuum circuit breaker Made in China - Suppliers and Manufacturers

Product Description

VT2A (ZN73C) Series indoor HV Vacuum circuit breaker

1. Product Introduction

VT2A (ZN73C) Series indoor HV Vacuum circuit breaker is a three-phase AC 50Hz, indoor 6-10kV power system switchgear, as industrial and mining enterprises, power plants and substation control and protection of electrical facilities unit. Due to the special advantages of vacuum circuit breaker, in particular, the applicable requirements of the rated operating current frequent operation, or multiple short-circuit breaking current location.

2. Type meaning of VT2A (ZN73C) Series indoor HV Vacuum circuit breaker
V T 2 A ( Z N 7 3 C ) - 12 (0)/ 0 - 0
V: vacuum circuit breaker
T: Tianan Electric
2A: Design Number
ZN73C: Industry Model
12: Rated voltage kV
(0): Structure, A open; B solid sealing
0: Rated current
0: Rated short-circuit breaking current kA

3. The main technical parameters of VT2A (ZN73C) Series indoor HV Vacuum circuit breaker

No.	Item	Unit	Parameters
1	Rated voltage	kV	12
2	Rated frequency	Hz	50
3	Rated lightning impulse withstand voltage: phases , earthing / fracture between	kV	75/85
4	Rated 1min power frequency withstand voltage:phases , earthing / fracture between	kV	42/48
5	Rated operating sequence		O-0.3s-CO-180s-CO
6	Rated current	A	630,1250	1250,1600
7	Rated short circuit breaking current	kA	20/25	31.5
8	Rated short-circuit current (peak)	kA	50/63	80
9	Rated short duration	S	4
10	Breaking times	time	100	50
11	Mechanical life	time	20000
12	Weight	kg	75

4. Structure Introduction

VT2(ZN73C)-12 Type indoor high voltage vacuum circuit breaker overall structure before and after the interrupter operating mechanism and lined up in the form of arrangement, the dominant part of a three-phase electrical circuit floor-standing institutions.
Vacuum interrupter mounted longitudinally in a tubular insulating tube, insulation tube using an epoxy resin APG process from casting, so it is particularly anti-creepage. This design greatly reduces dust accumulation on the surface of the interrupter can not only prevent the vacuum interrupter affected by external factors, but also to ensure that even under severe hot and humid and dirty environment also can exhibit high voltage effect impedance state.

5. Ordering Information for VT2(ZN73C)-12 Type indoor high voltage vacuum circuit breaker
1. breakers name, type, size and number of orders
2. The circuit breaker rated voltage, rated current and rated breaking breaking current
3. Optional element program
4. Rated operating voltage
5. spare, the name and quantity of spare parts
6. If there are other special customer requirements, when ordering