RMU 24kV 630A SF6 Load Break Switch For Outgoing Line

Features of RMU 24kV 630A SF6 Load Break Switch For Outgoing Line

Model meaning.: FL(R)N □ -24kV

The compact size, easy installation, and fine adaptability to environment make the switch suitable for many different applications.

It can be divided into two types: FLN □-24kV (K type single spring operating mechanism), FLRN □-24kV (A type double spring operating mechanism). The latter type could be equipped with fuse combination, having control and protecting function, which can be used for power supply and substation as a protecting and control device, especially suitable for ring main unit switchgear, cable distribution box and switching substation.

Technical Parameters of RMU 24kV 630A SF6 Load Break Switch For Outgoing Line

Use Conditions of RMU 24kV 630A SF6 Load Break Switch For Outgoing Line

1. Ambient temperature:-40℃ ~+40℃

2. Relative humidity: daily average ≤ 95%, monthly average ≤ 90%

3. Altitude: ≤ 2000m

4. Earthquake intensity：≤ 8 degree

5. No corrosive gas, no combustible gas, no steam and shake.

*Annual leakage rate ≤ 0.1%

*Special conditions：When the altitude ＞ 2000m,please indicate in order to adjust the designing scheme.

Details of RMU 24kV 630A SF6 Load Break Switch For Outgoing Line

1. Manual operating mechanism

K type spring dual-function operating mechanism

As an inlet control unit for FLN□-24kV, the working principle of K type spring operating mechanism is spring press and release.

Earthing operation

Driven by the handle, upper crank arm rotates and presses spring 2 to store energy, when the max energy reaches continue rotate the rank arm, the energy storage spring starts to release energy and drive the upper trigger, enables the connecting bar to drive the crank arm, crank arm rotates and drives the moving contactor for earthing.

Switch on operation

Driven by the handle, lower crank arm 1 rotates, presses spring 2 to store energy, when the energy released, it drives the trigger 8, enables connecting bar to drive the crank arm, crank arm rotates and drives the moving contactor and LBS load break switch turns on.

Switch off operation

Rotate the main shaft crank arm counterclockwise by the handle, release the energy storage spring and the load break switch turns off.

A type spring dual-function operating mechanism

As a outlet control unit for FLRN□-24kV.

Working principle of A type mechanism is same as K type, in addition, it has fuse striker trip function. For A type mechanism. Electromagnetic trip is also available for customers requirement.

Switch on operation

Driven by the handle, lower crank arm 1 rotates to press switch on spring 12 and switch off spring 8 at the same time, to provide sufficient energy required by switching off. When the lower crank arm 1 buckles the pin and drives trigger to move, it makes the lower roller wheel tripped, and release the switch on spring and load break switch turns on.

Switch off operation

Press the switch off button or push the trip pin 2 by the fuse striker, release   the spring and load switch turns off.

Earth operation

Earthing operation of A type mechanism is the same as that of K type.

2. Motorized operating mechanism

Motor operation can be added to both types of operating mechanisms, which means it can be operated manually or motorized.

Operating voltage: DC48V AC/DC 110V 220V

Dimensions of RMU 24kV 630A SF6 Load Break Switch For Outgoing Line