RMU Ring Network Cabinets Use 40.5kV Indoor AC High Voltage 3P SF6 Load Break Switch

RMU Ring Network Cabinets Use 40.5kV Indoor AC High Voltage 3P SF6 Load Break Switch

Application

SF6 load break switch is a multi-functional medium-voltage switchgear integrating load switch, grounding switch and isolation switch. It is filled with SF6 gas in a fully sealed epoxy resin enclosure with reinforced structure, and the above three functions are realized with a small amount of components, thus ensuring the quality and reliability of the product, which has excellent insulation and breaking capacity and can guarantee the equipment under normal conditions Safe operation for 20 years under normal conditions.
The switching speed is determined by the spring and has nothing to do with the manual speed. After the addition of automatic instrumentation, remote sensing and remote control can be realized.

Specifications

Features
1. Open and close the load current and load current
For splitting and closing load current, closed loop current, no-load transformer and cable charging current, closing and short circuit current
2.Withstand short-circuit current
The load switch equipped with grounding switch can withstand short-circuit current
3. Release device with high sectional capacity fuse
With segment phase tripping function, it can cut off the short-circuit current and be used to protect the equipment
4. Interrupting device of interrupting tube composition
Use the spindle to drive the piston to compress the air when the switch is opened, so that the compressed air is ejected from the nozzle to blow out the arc. In the closed state can pass the normal working current and short-circuit current.

Drawing

Parameter

No   Item Unit    Parameter
  1Rated voltagekV40.5KV
 2Rated frequency Hz50
 3Rated current A630
 4                                                                                                wet

1min Power frequency withstand voltage

dry

kV

 

kV

95

 

95

 5Lightning impulse withstand voltagekV185
 6Rated short circuit breaking current (peak)kA25
  7Rated activeload and close circuit breaking currentA630
 8Rated transferring currentA630
 9Rated short circuit making current (peak)kA63
 10Rated cable(line) charging breaking currentA10
  11Cable charge breaking current in earthing faultA30
 12Rated withstand current (peak)kA63
 13 Short time withstand current (2s)kA25
 14Mechanism life time                    10000

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Single pole vertical installation
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Indoor high-voltage SF6 load break switch is widely used in the 11~36kV electric power distribution systems.

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