33kV isolating switch - Zhejiang Yuanneng Electric Technology Co.,Ltd
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33kV isolating switch

11kV disconnector switch is a switching device, when it is in the separate position, there is an insulation distance and an obvious disconnection mark between the contacts in accordance with specified requirements; in the combined position, it can carry the current under normal loop conditions and under abnormal conditions (such as short circuit) within a specified time.

Overview Specification Chart Application Other

Description

33kV isolating switch is a single pole switching device with a clearly visible disconnect path, easy to operate and suitable for outdoor medium voltage overhead distribution networks. The isolating switch is operated via an insulating rod with hook.

 

Product Feature

Outdoor high-voltage isolating switch has a single-phase structure. Each phase is composed of a chassis, a pillar insulator, a blade, and a contact. There are screws on the side of the blade to adjust the contact pressure and a spring for compression. The upper end is equipped with a fixed pull buckle and a self-locking device connected to it, which is used for opening and closing of the insulated hook rod. It has the advantages of large contact area, low contact resistance, good electrical conductivity, and high mechanical strength.

 

Normal Service Conditions:

  • Altitude: not exceed 1000 m
  • Temperature: no higher than 40℃, and no lower than -30℃,
  • Wind pressure: No more than 700Pa (Equivalent to wind speed 34 m/s)
  • Earthquake intensity no more than 8 degree, no frequent shock sites.
  • Ice thickness no more than 10 mm
  • No fire, explosion, serious filthy, chemical corrosion and violent vibration of place.

 

Packing

Normal packing will be carton+ pallet. Pallets securing your primary packaging (and your product) in a stack to facilitate movement and storage, it provide additional protection. Special packaging arrangements are available upon user request

 

Specification Chart

Type Rated Voltage (KV) Rated Current (A) 4S Heat Steady e.c.a Impulse Withstand Voltage Power Frequency Withstand Voltage
To earth (kV) Across the isolating distance (kV) To earth (kV) Across the isolating distance (kV)
RH-B 11 400 31500 75 95 38 42
24 400 31500 135 155 55 60
33 600 31500 170 195 70 80

 

Application

The isolating switch is mainly used to isolate the parts that require power outage and the live parts in the high-voltage power distribution device. It is widely used in various power systems, including the following scenarios: Substation scenario: In the substation scenario, the isolating switch is mainly used to cut off various connections between power stations and isolation circuits within substations. Line connection scenario: In the power line connection scenario, an isolation switch can be used to isolate the faulty part or the maintenance part to ensure the normal operation of the entire power system.

 

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