33kv/72.5kv/110kv/145kv Outdoor Live Tank Vacuum Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Outdoor
• Structure: Live Tank
• Model NO.: ZW
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000
• Transport Package: Carton with Wooden
• Specification: 33KV/72.5KV/145KV, 50HZ/60HZ/1250A TO 3150A
• Trademark: HEMG
• Origin: China
• Production Capacity: 5000PCS/Year

Product Description

ZW-33KV/72.5KV/145KV  series of outdoor high voltage vacuum circuit breaker

 
General Description:
ZW  series of vacuum circuit breakers are three-phase, A.C 50Hz/60HZ outdoor high voltage distribution equipment with 33KV/72.5KV/145KV rated voltage, which can be used to open or close loading current, over-loading current and short-circuit current. ZW series of vacuum circuit breakers possess reasonable designing construction, convenient maintenance, With current transformer (current ratio: 100:5 H 200:5 H 400:5 H 1000:5 H 1600:5), and it is equipped with four coils for each phase used for measurement and protection. The operating mechanism is CD10-III type electric magnetic operating mechanism.
Applying ambient conditions:
1. The height above the sea level should be no higher than 4500m.
2. Ambient temperature: The max. temperature should be +40ºC. The min. temperature should be -30ºC. 
3. The wind pressure should be no more than 700Pa (equals to wind speed of 34m/s).
4. Earthquake intensity should be no more than 8 degree. 
5. The degree of air-filth should be III class.

Specification sheet :

Name	Unit	Data
Rated Voltage	kV	35
Rated current	A	1250  1600 2000
Rated frequency	Hz	50
Rated power frequency withstand voltage(1min)	kV	95
Rated short time withstand current	kA	<20
Rated withstand current(peak)	kA	<50
Rated short-circuit breaking current	kA	25  31.5
Rated short-circuit making current	kA	63  80
Rated lighting impulse withstand voltage	kA	185
Rated duration of short circuit	S	4
Operating cycles at rated short-circuit breaking current	Cycles	12(8)
Mechanism endurance	Cycles	6000 10000
Closing time	ms	<150
Opening time	ms	<60
Overall dimension (Width X Depth X Height)	mm	2335 X 500 X 2275
Rated operating voltage and rated voltage of auxiliary circuit	V	A.C 220V,110V D.C 220V,110

 
The Construction Characteristics:
Zw series of vacuum circuit breakers are mainly made up of vacuum interrupters, current transformer, actuator and electric magnetic operating mechanism. The overall construction is adopted insulating bottle supporting type. The vacuum interrupter is mounted in the upper insulating bottle, and between them, a new kind of insulating material is filled, which can solve the problem of condensed water and other problems caused by filled gas or filled oil due to good insulating property, durability and resistance for outdoor high temperature. The lower insulator bottle is used to support the vacuum interrupter. Three-phase insulating bottles are mounted on the waterproof mechanism box, in which a heater is equipped for protecting the electric control component against damp.