GW5-40.5 (72.5) series outdoor high-voltage AC isolation switch
Short Description:
The GW5-40.5 (72.5) series outdoor high-voltage AC isolation switch is an AC 50Hz outdoor high-voltage electrical equipment with rated voltage levels of 40 and 5kV. It is used for opening and closing high-voltage lines under no-load conditions, as well as for electrically isolating high-voltage lines with live electrical equipment such as high-voltage busbars and circuit breakers under maintenance. It can also be used for opening and closing small capacitor or inductor currents.
Product details
summary:
The GW5-40.5 (72.5) series outdoor high-voltage AC isolation switch is an AC 50Hz outdoor high-voltage electrical equipment with rated voltage levels of 40 and 5kV. It is used for opening and closing high-voltage lines under no-load conditions, as well as for electrically isolating high-voltage lines with live electrical equipment such as high-voltage busbars and circuit breakers under maintenance. It can also be used for opening and closing small capacitor or inductor currents.
This series of outdoor isolating switches meets the relevant provisions of standards such as GB1985 "AC High Voltage Isolating Switches and Grounding Switches", IEC60129 "AC Isolating Switches and Grounding Switches", and GB/T11022 "Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards".
Structural features:
Each isolation switch consists of two pillar insulators, fixed on a base at an angle of 50 ° to form a V-shaped structure. It mainly consists of the following parts: base part, pillar insulator, terminal block part, contact part, grounding knife, grounding static contact, terminal block, etc.
This isolation switch is divided into three types: ungrounded, single grounded, and double grounded. There is a mechanical interlock between the spindle and the grounding knife, and it is equipped with an auxiliary switch. There are two operation modes for the switch: manual and electric. This isolation switch has the following characteristics:
1. Flexible rotation and easy opening and closing. Due to the use of rolling bearings for transmission, it is more flexible and labor-saving during the rotation process.
2. By using an umbrella gear mechanism for transmission, the opening and closing actions of the two columns are ensured to be consistent.
3. The opening and closing limit device ensures that the contacts are in the appropriate position. At the same time, after the operation is completed, the handle is locked with a locking ring to prevent unintentional external forces from freely opening and closing, thereby
Ensuring the reliability of the opening and closing positions.
4. The contact opening distance is large, and there is sufficient insulation isolation fracture to ensure its safety.
5. There are three types of grounding and non grounding, and there is a reliable mechanical interlock between the spindle and grounding to ensure safety. Users can choose the grounding method according to their needs.
6. According to the convenience of the user, the operating mechanism can be installed below any position with the same operating effect.
Normal usage conditions:
Altitude: not exceeding 3000m;
Surrounding air temperature: upper limit of 40 ℃, lower limit of -25 ℃;
The wind speed does not exceed 35m/s;
The seismic intensity exceeds 8 degrees;
The pollution level shall not exceed level III;
The thickness of ice cover shall not exceed 10mm;
The installation site should be free from flammable and explosive hazards, chemical corrosion, and severe vibration.
