Zw7-40.5 High Performance Vacuum Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZW7-40.5
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Zw7-40.5
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000, IEC
• Number of Poles: 3
• Frequency: 3-Phhase AC 50Hz
• Transport Package: Wooden Carton
• Specification: 40.5KV
• Trademark: Jecsany
• Origin: Jecsany
• HS Code: 850422000
• Production Capacity: 5000

Product Description

Product Introduction: ZW7-40.5 Vacuum Circuit Breaker

Product Features

The ZW7-40.5 series is an outdoor high-voltage vacuum circuit breaker designed for 40.5kV voltage level and suitable for three-phase AC 50Hz power systems. Its main features include:
1. High voltage level: The rated voltage is 40.5kV, suitable for medium and high voltage power systems.
2. Vacuum arc extinguishing technology: The vacuum arc extinguishing chamber is used, which has excellent arc extinguishing performance and can quickly cut off load current, overload current and short-circuit current.
3. Outdoor design: Suitable for various harsh environments, with high protection level and anti-pollution ability.
4. Wide temperature adaptability: The working environment temperature range is -45ºC to +45ºC, suitable for extreme climatic conditions.
5. High altitude applicability: The maximum installation altitude can reach 2500 meters, suitable for use in high altitude areas.
6. High reliability: The design meets the seismic level 8 and can operate stably in a strong earthquake environment.
7. Frequent operation capability: Suitable for occasions that require frequent opening and closing operations, such as rural power grids and industrial and mining enterprise distribution systems.

 Working principle
ZW7-40.5 vacuum circuit breaker realizes the opening and closing of current through a vacuum arc extinguishing chamber:
1. Vacuum arc extinguishing chamber: In a vacuum environment, the arc is easily extinguished because the vacuum medium has extremely high insulation strength and arc extinguishing ability.
2. Operating mechanism: Through a spring operating mechanism or an electric operating mechanism, the contacts are driven to open and close quickly to realize the connection and disconnection of the circuit.
3. Protection function: It can quickly cut off the fault current (such as short-circuit current) to protect the safety of power equipment and systems.

 Application scenarios
ZW7-40.5 vacuum circuit breakers are widely used in the following scenarios:
1. Substation: Used for the protection and control of medium and high voltage distribution systems.
2. Industrial and mining enterprises: Suitable for power distribution and protection of industrial and mining enterprises, especially in occasions where frequent operations are required.
3. Rural power grid: Used for power distribution and protection of rural power grids, adapting to complex environmental conditions.
4. High altitude areas: Suitable for areas with an altitude of no more than 2,500 meters, meeting the needs of high-altitude power systems.
5. Harsh environment: Able to operate stably in environments with high humidity, high pollution (anti-pollution level IV) and strong wind (wind speed ≤ 35m/s).
 

No.	Item	Unit	Parameters
1	Rated voltage	KV	40.5
2	Rated frequency	Hz	50/60
3	Rated current	A	630/1250
4	Rated short-circuit breaking current	kA	31.5
5	Rated peak value withstand current(peak)	kA	50/63
6	Rated short time withstand current	kA	20/25
7	Rated short-circuit closing current (peak)	kA	50/63
8	Mechanical life	Times	10000
9	Rated short-circuit breaking current breaking number	Times	30
10	Power frequency withstand voltages (1 min), wet/dry: inter-phase, earth, fracture	KV	80/95
11	Lightning impulse withstand voltage (peak) inter-phase ,earth, fracture	KV	185
12	Rated operate sequence		O-0.3-CO-180S-CO
13	Secondary circuit 1min power frequency voltages	KV	2

ZW7-40.5 vacuum circuit breaker is a high-performance, high-reliability outdoor high-voltage electrical equipment suitable for a variety of complex environments and application scenarios. Its vacuum arc extinguishing technology and wide environmental adaptability make it an indispensable protection and control device in medium and high voltage power systems.

Overall dimension