KJFD-01/MX Intelligent Electric Operation Solution, featuring an MCU chip integrated circuit for intelligent judgment of the closing/opening status of the load switch. It performs electric operations based on customer instructions, enabling local closing/opening and remote closing/opening functions. It offers protection for the motor against overcurrent or jamming overload, ensuring the safety of critical components in the mechanism. The controller features a signal function for equipment faults, greatly facilitating daily maintenance.

KJFD-01/NX Standard Electric Operation Plan, utilizing PCB terminal integration, the electric operation of the mechanism is achieved through relay contacts within the controller. It does not have motor protection features and lacks fault alert functions, classifying it as an economical electric operation solution.

This series of products is fully inspected and certified before shipment, conforming to the requirements of GB 3804-2004 "AC High-Voltage Load Break Switches for 3.6KV-40.5KV", GB 3906-2006 "AC Metal-Enclosed Switchgear and Control Equipment for 3.6KV-40.5KV", and "High-Voltage AC Load Break Switch-Fuse Combination Apparatus".

User Operation Instructions

Closing operation:

Manual Closing: Mount the mechanism on the cabinet and secure it. Insert the mechanism handle into the operation shaft located above the mechanism, rotate the handle clockwise approximately 90°. The mechanism's coiled double spring is compressed to store energy. Press the closing button to release the energy stored in the closing spring, and the main circuit of the load switch closes under the power of the mechanism's release.
Electromagnetic Closing: Once the power is applied to the mechanism and the closing signal is given, the controller automatically identifies the on/off position of the load switch and the status of all interlock circuits. If all circuit statuses meet the conditions for closing, the controller automatically activates the release of the closing solenoid, achieving an instantaneous closure of the main circuit of the load switch.

Breaker operation:

Manual Disconnect: Press the disconnect button to release energy, and under the release power, push the load switch to complete the main circuit disconnect action. For electric disconnect, a disconnect signal is issued. The controller will automatically determine the opening and closing position of the load switch and the status of each interlock circuit. If the circuit status meets the conditions for disconnection, the controller will automatically activate the disconnect solenoid to release energy, achieving the main circuit disconnect of the load switch. The mechanism can perform main circuit closing or grounding closing operations when in the disconnect state.

Grounding, Closing, and Opening Contacts:

Grounding Closing: Insert the mechanism handle into the grounding operation shaft at the bottom of the mechanism, rotate clockwise approximately 90°. As the grounding energy storage spring compresses past the midpoint, it releases energy instantly to push the grounding switch into the grounded position. At this point, the mechanism interlock locks, preventing main circuit closure.
Grounding Disconnect: Insert the mechanism handle into the grounding operation shaft at the bottom of the mechanism, rotate counterclockwise approximately 90°. The grounding energy storage spring releases energy instantaneously when compressed past the midpoint, pushing the grounding switch to complete the grounding disconnect. At this point, the mechanism interlock is in the open position, allowing for the closing and opening operations of the load switch.

Actuator external and installation dimensions