Standard: IEC 62271
Type: Load-break switches
Application: Used in electrical substations to allow isolation of apparatus such as circuit breakers, transformers, and transmission lines, for maintenance.
Shanghai Metal Corporation is a leading disconnector manufacturer and supplier.
In electrical engineering, adisconnector, disconnect switch or isolator switch is used to ensure that an electrical circuit is completely de-energized for service or maintenance. Such switches are often found in electrical distribution and industrial applications, where machinery must have its source of driving power removed for adjustment or repair. High-voltage isolation switches are used in electrical substations to allow isolation of apparatus such as circuit breakers, transformers, and transmission lines, for maintenance. The disconnector is usually not intended for normal control of the circuit, but only for safety isolation. Disconnector can be operated either manually or automatically (motorized disconnector).
If you want to know more about our disconnector, please feel free to contact us, we will reply you within 24 hours.
Technical Information of Disconnector:
Type |
Rated Voltage |
Rated Current |
4S Heat Steady current |
Shock steady current |
Impulse withstand voltage |
Power frequency withstand voltage |
||
(KV) |
(KV) |
|||||||
(KV) |
(A) |
(A) |
(A) |
To earth |
Across the isolating distance |
To earth |
Across the isolating distance |
|
GW9-15/400 |
15 |
400 |
12.5 |
31.5 |
75 |
85 |
38 |
42 |
GW9-15/630 |
15 |
630 |
12.5 |
31.5 |
75 |
85 |
38 |
42 |
GW9-24/400 |
24 |
400 |
12.5 |
31.5 |
75 |
125 |
38 |
65 |
GW9-24/630 |
24 |
630 |
12.5 |
31.5 |
75 |
125 |
38 |
65 |
GW9-72/400 |
72.5 |
400 |
12.5 |
31.5 |
350 |
410 |
160 |
200 |
GW9-72/630 |
72.5 |
630 |
12.5 |
31.5 |
350 |
410 |
160 |
200 |
Packaging of Disconnector:
Shanghai Metal Products are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.
1)Shanghai Metal Standard
2)Customization
Advantages:
1. Isolation switches are mainly used to reliably isolate the parts that need to be powered off from the live parts in high-voltage distribution devices, in order to ensure the safety of maintenance work.
2. Isolation switches can also be used for switching certain circuits to change the operation mode of the system.
3. After opening, establish a reliable insulation gap, and separate the equipment or lines that need to be overhauled from the power supply with an obvious disconnection point to ensure the safety of inspection and maintenance personnel and equipment.
4. Change the line according to operational needs.
5. It can be used to divide and combine small currents in the circuit, such as the charging current of bushings, busbars, connectors, short cables, the capacitance current of the switch voltage equalizing capacitor, the circulating current when the double busbar is switched, and the excitation current of the voltage transformer etc.
6. According to the specific conditions of different structure types, it can be used to divide and combine the no-load excitation current of a certain capacity transformer.