Customization: | Available |
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Type: | 10kv/12kv/15kv |
Structure: | According to Customer Requirements |
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(H)GWBEB type outdoor high-voltage isolation switch, also revered as an isolation disconnect switch, is meticulously engineered for deployment on 10(12, 15, 24)kV high voltage power transmission and distribution lines. It facilitates the seamless opening and closing of single-phase or three-phase circuits under live voltage conditions without a load.
This switch is crafted specifically for single-phase application within three-phase line systems, notable for its straightforward structure, cost-efficiency, and user-friendly operation. It is available in rated currents of 200, 400, 600, 800, 1000, and 1250 amps. Each switch comprises a base, post insulators, conductive parts, and a mechanical section with an innovative gate knife structure for circuit operations. The gate knife of each phase is composed of two conductive blades, supported by external compression springs on either side. The required contact pressure for the switch's gate knife is achieved by adjusting the spring height. An insulated hook stick operates the switch for opening and closing actions and includes a self-locking device for added security.
Working Environment:
Altitude should not exceed 1000 meters;
Ambient temperature: maximum should not surpass +40°C; minimum should not dip below -30°C;
Outdoor wind speed should not exceed 35 meters/second;
Seismic intensity should not surpass 8 degrees; the installation venue must be free from frequent severe vibrations.
The chosen installation site must remain free from gases, chemical deposits, salt mist, dust, dirt, or other explosive or corrosive substances that could significantly impair the switch's insulation and conductivity.
Note:
SHOULD THE ABOVE STANDARD USE CONDITIONS BE EXCEEDED, USERS ARE ENCOURAGED TO NEGOTIATE WITH THE COMPANY.
Installation, Use and Adjustment
Pre-installation work
Annually, conduct regular checks on the following switch components:
Thoroughly remove any accumulated dirt from conductive parts, contact surfaces, and insulating porcelain bottle surfaces.
Inspect all components for damage, with particular attention to any breakage or cracks in the insulating porcelain bottle.
Assess the quality of the conductive part's contact surface to ensure it remains in optimal condition.
The main technical parameters |
Table I |
|||||||||
Model |
Rated voltage |
Rated current |
kA |
10 seconds thermal stable current |
||||||
peak |
Valid values |
|||||||||
(H)GW
|
10 |
200 |
5 |
9 |
5 |
|||||
400 |
21 |
15 |
10 |
|||||||
600 |
35 |
25 |
14 |
|||||||
630 |
35 |
25 |
14 |
|||||||
800 |
35 |
25 |
14 |
|||||||
1000 |
50 |
35 |
20 |
|||||||
Contact force parameters |
Table II |
|||||||||
Model |
Rated current(A) |
contact pressure(kgf) |
||||||||
(H)GW |
5 |
9 |
||||||||
21 |
15 |
|||||||||
35 |
25 |
|||||||||
35 |
25 |
|||||||||
35 |
25 |
|||||||||
50 |
35 |