High Voltage Air Sf6 Pole-Mounted Electrical Electric Vacuum Interrupter Circuit Breaker Auto Recloser /Load Break Switch

Product Description

Our factory

We are professional manufacturer of current transformer ,voltage transformer, Vacuum Circuit Breakers/Recloser,Isolation switches,Dropout Fuse Cut-out,Lightning Arresters,High and Low Voltage Cabinets,Metering Devices,Power Distribution Transformers  etc.


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.

Test Reports
All products have undergone professional testing and certification.

Our Customer

Our customers are located all over the world.

Photos of Product