GW9 outdoor single pole isolation switch

The GW9-12(W) outdoor single-pole disconnector (hereinafter referred to as the switch) is suitable for 10 kV high-voltage transmission and distribution lines to cut and close single-phase or three-phase circuits without load and voltage. The switch is used for single-phase use of the three-phase line system, and the structure is simple, economical and convenient to use. The rated current of the switch is: 200; 400; 600 and 1000 amps. They are composed of a base, a post insulator, a conductive portion, and a mechanism portion. The knives and knives are used to close and close the line. Each phase knife is composed of two conductive blades, and a compression spring is arranged on both sides of the blade to adjust the height of the spring to obtain the contact pressure required for the switch blade. When the switch is opened and closed, the part of the operating mechanism of the insulating hook rod can be used for the closing movement. The knife has a self-locking device.

Environmental conditions for the GW9 outdoor monopole disconnector:
1) The altitude does not exceed 1000 meters;

2) Ambient temperature: the highest ambient temperature is not higher than +40 ° C, and the lowest ambient temperature is not lower than -30 ° C;

3) The outdoor wind speed does not exceed 35 m / s;

4) The seismic intensity does not exceed 8;

5) The installation site should have no gas, vapor, chemical deposits, salt spray, dust and dirt and other explosive and aggressive media that seriously affect the insulation and conductivity of the switch;

6) The installation site should be free of frequent and severe vibrations.

GW9 outdoor single pole isolation switch installation and use

l) Remove dust and dirt from the parts, and carefully erase the surface of the insulating porcelain bottle and scrub the wiring surface of the grounding screw.

2) Apply a layer of industrial petroleum jelly to the rotating parts and contacts.

3) Check the contact surface and adjust the height of the compression spring so that the contact pressure meets Table 2.

4) This switch is only suitable for hoisting. As shown in Figure 2, it is generally used in conjunction with a transformer on the line.

5) Generally, only three mounting holes are used for the current rating of this switch at 200-400 amps. 600-1000 amps use three mounting holes.

6) Check the following parts of the switch regularly every year.

6.l Remove dust, especially conductive parts, contact surfaces and surfaces of insulating porcelain bottles.

6.2 Check the damage of each other parts, pay special attention to check the insulation porcelain bottle for loss and cracking.

6.3 Check that the contact surface of the conductive part is good.

7) After unpacking, check the product and the attached product certificate, and install the instruction manual.

8) Check the other parts of the switch for damage and broken porcelain bottles.

9) If the switch is not used immediately, it should be checked regularly, and a layer of industrial petrolatum is applied to the contact surface and the rotating part.