High Voltage Air Sf6 Pole-Mounted Electrical Electric Vacuum Interrupter Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Overcurrent Protection
• Model NO.: ZW-J
• Rated Frequency: 50Hz
• Rated Voltage: 12kv
• Rated Current: 630A
• Mechanical Life: 10000times
• Transport Package: Export Box
• Trademark: DGG
• Origin: China
• HS Code: 8504311000
• Production Capacity: 100000PCS/Year

Product Description

Photos of Product

General

The new problem of the distribution network is as shown below:
1. When the main trunk circuit is modified, the branch line failure rate is rising;
2. Due to the failure of branch line user and protect mismatch, spread to the whole feeder power outages and lead to liability disputes;
3. Transformer substation grounding selected-line equipment can not satisfy quick find grounding point demand;
4. Due to protective circuits with multilevel add delay, worsening of power network working.
FZW28-12F type excellent solve the problem as above.


Boundaries switch (watch-dog) functions
 

Technical specification
No.	Item		Unit	Data
1	Rated frequency		Hz	50
2	Rated voltage		kV	12
3	Rated short-time power frequency withstand voltage	Interphase, to earth(wet)	kV/min	34/1
		Interphase, to earth(dry)		42/1
		Interrupter fracture, isolated fracture(dry test)		49/1
		Auxiliary control circuit to earth		2/1
4	Rated lightning impulse withstand voltage	Interphase, to earth	kV	75
		Arc extinguish chamber Break, Isolation break		85
5	Rated current		A	630
6	Rated short-time withstand current and duration		kA/s	20/4
7	Rated peak withstand current		kA	50
8	Rated short-circuit making current(peak)			50
9	The leak rate of the year			≤0.5%
10	Main circuit resistance		μΩ	≤550
11	Mechanical life		Times	10000
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate.