Overview
The DNGW1 Load-isolation switch is designed with the structure of visible disconnection and vertical disconnection.
It is mainly used in rural distribution networks. They are mounted horizontally or vertically on single or double poles made of metal, concrete or wooden.
DNGW1 Load-isolation switch and DNHGW1 Load-isolation switch refer to They are mounted horizontally or vertically on single or double poles made of metal, concrete or wooden.
DNGW1 and DNHGW1 Load-isolation switch refer to the high-speed action of auxiliary switch and the cooling and limiting effection of arc extinguishing chamber,which limits generation of arc and gas.
Therefore, external arcs are avoided,which is good for environment and increasing operator’s safety.
DNHGW1 Load-isolation switch’s composite insulator provides better resistance to chemicals, salty environments and highly polluted areas.
Additionally, the lightness of the material makes them easier to pack, transport and assemble. For safer transportation and easier packaging, spacers The Load-isolation switch is manufactured in separate stage,and fixed to enclosed pallet with bolts.
Several phases are mounted on a bracket, operated by a single drive mechanism.
Standards: IEC 60265-1 and IEC-62271 102.
Structure of Load-isolation switch
1、Main conductive part
Including: dynamic and static contacts, terminal board, self-locking device, blade,spring, limiter, etc.
2、Insulation part
Mainly refers to insulators
3、Base part
Contains: channel steel seat
4、Nameplates, anti-counterfeiting labels, etc.
5、Install accessories
Includes: installation angle steel, installation bolts, etc.
Technical Parameter
Selling points
1、Operating mechanism
Brand new operating mechanism refusal to refurbish
2、porcelain insulator
Good insulation high-quality insulator casting Durable
anti-fouling,no cleaning
3、Plastic spray bracket
Hot-dip galvanizing process with plastic，spraying on the
outer layer Not easy to rust support Load-Disconnector Switch.
4、Good conductivity
The conductive parts of the wiring are silver plated and have
good adhesion Conductivity.
Operation of Load-isolation switch
Load-isolation switch are designed to isolate parts of an electrical circuit by interrupting the flow of electrical current.
Unlike circuit breakers, which are meant to protect circuits from overload, high voltage Load-isolation switch is operated manually or remotely to ensure safety during maintenance or inspection.
Their operation is straightforward yet critical; by physically separating contacts within the switch, they create an air gap that ensures no current can flow through the circuit being serviced.
The design of these switches varies depending on their application but typically includes rotating, sliding, or swinging mechanisms to open or close the electrical circuit.
They must withstand the high voltages they control, often involving sophisticated insulation and arc suppression technologies to manage the electrical discharges that occur during operation.
Normal Operating Conditions
1、Ambient temperature: -40℃ ~+40℃ ;
2、Relative humidity: the daily average value is not biggerthan 95%, and the monthly average value is not bigger than 90%;
3、Installation location: the altitude does not exceed 1000m;
4、Wind speed: no more than 35m/s;
5、Ice coating thickness: no more than 10mm;
6、Installation location: There should be no risk of fire,explosion, chemical corrosion and severe vibration;
7、Earthquake intensity: no more than magnitude 8;
8、Not suitable for places with burning or explosion hazards,places with severe vibration or impact, conductive and chemical gas and areas with severe pollution and salt spray.
Ordering instruction
1、tem No；
2、Rated Voltage;
3、Rated Current;
4、Whether with arc extinguishing chamber;
5、Whether with mounting bracket ;
6、Please inform us with your special requirements.
