ZW32-40.5/1250A Outdoor High-Voltage Vacuum Circuit Breaker

Description

The ZW32-40.5/1250A Outdoor High-Voltage Vacuum Circuit Breaker is designed for three-phase AC 50Hz systems and is suitable for a rated voltage of 40.5kV in outdoor high-voltage switchgear. This breaker complies with the national standard GB1984 ("High Voltage AC Circuit Breakers") and the professional standard JB3855 ("3.6 ~ 40.5kV Outdoor AC High Voltage Vacuum Circuit Breakers"), as well as related IEC standards. It is primarily used for the control and protection of electrical equipment in industrial and mining enterprises, power plants, and substations, making it ideal for environments requiring frequent operation. The circuit breaker is capable of multiple breaking and fast breaking operations, ensuring efficient performance and reliable protection in high-voltage systems.

Environmental conditions
• Ambient Temperature: -35°C to +45°C

• Relative Humidity: Monthly average up to 90%, daily average up to 95%

• Saturated Vapor Pressure: Daily average not exceeding 2.2×10⁻³ MPa; Monthly average not exceeding 1.8×10⁻³ MPa. Condensation may occur in high humidity and temperature drops.

• Altitude: Up to 2000 meters

• Earthquake Intensity: Not exceeding 8

• Environmental Conditions: No fire, explosion risks, severe pollution, chemical corrosion, or intense vibration.

• Customization: The product can be customized according to specific requirements.

Technical Data

1	Rated voltage		kV	40.5
2	Rated current		A	1250/1600/2000/2500
3	Rated frequency		HZ	50/60
4	Rated insulation level	Lightning impulse withstand voltage	kV	185
4	Rated insulation level	1 min power-frequency withstand voltage	kV	80, 95/95
6	Rated short-circuit breaking current		kA	25/31.5
7	Rated short-circuit making current (peak value)		kA	63/80
8	Rated short-time withstand current		kA	25/31.5
9	Rated withstand current (peak value)		kA	63/80
10	Rated operating sequence			O-0.3s-CO-180s-CO
11	Rated short-circuit duration		s	4
12	Times of breaking with the rated short-circuit current		Times	30
13	Mechanical life		Times	10000
14	Mechanism control voltage		V	AC/DC220
15	1min secondary circuit power frequency withstand voltage		kV	2
16	Contact open distance		mm	16 ±1
17	Contact Over-travel		mm	4±0.5
18	Average opening speed		m/s	1.4±1.8
19	Average closing speed		m/s	0.4-0.8
20	Three phase simultaneity		ms	≤2
21	Contact closing bounce time		ms	≤5
22	Main circuit DC resistance per phases		μΩ	≤80
23	Polar distance		mm	460 ±2
24	Opening time		ms	≤50
25	Closing time		ms	≤100