DSN-AMY(Z) Pull-Turn Electromagnetic Lock

Category:

High-voltage electrical equipment

The DSN-BMY(Z) handle-type electromagnetic lock is an electrically controlled interlocking device designed to prevent erroneous operation of high-voltage switchgear. It is primarily used to interlock critical components in indoor high-voltage switchgear, such as the front and rear cabinet doors, disconnect switches, circuit breakers, and grounding switches, thereby preventing inadvertent operations. As such, it is an indispensable interlocking device for power generation and supply utilities. In addition, to meet the requirements of integrated automated substations, this series of electromagnetic locks is equipped with auxiliary contacts inside the lock mechanism, providing a pair of corresponding switching contacts at the locked and unlocked positions. This facilitates interlocking among multiple locks and supports integrated automation data acquisition, effectively eliminating false operations and making it an ideal interlocking solution for modern substation equipment. The patented “electrically controlled lock” addresses the limitation of mechanical-programmed locks in integrated automated substations, where key-based control and management are impractical.

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Technical Specifications

Note: The terms “left-side installation” and “right-side installation” refer to the mounting position relative to the operator’s line of sight when facing the locking object (e.g., an operating lever or a fixed part of the cabinet). If the electromagnetic lock is mounted on the left side of the locking object as viewed by the operator, it is considered a left-side installation; conversely, if it is mounted on the right side, it is considered a right-side installation.

Operating Steps

(1) Normal operating procedures:
a. Press the button to energize the power supply; the solenoid coil is activated, causing the moving armature to disengage from the latch stop, and the unlock indicator light illuminates, indicating that unlocking is permitted.
b. Turn the handle in the direction of unlocking (clockwise for left-hand locks, counterclockwise for right-hand locks); when it reaches the limit position, continue applying force, and the bolt will automatically
When the lock is in the unlocked position, the cabinet door can be opened. If the lock has not reached the unlocked position, the latch will automatically return to the locked position, thereby achieving “automatic reset.”
Yes, if the latch is in the unlocked position, the handle must be manually turned in the direction opposite to that of unlocking, causing the latch to return to the locked position and thereby achieving the locked state.

Note: Locks A and B have the same external appearance and installation dimensions.
Operating method: A. Push the toggle switch B. Pull the handle

(2) Manual unlocking steps:
a. Press the button, and the power supply is forcibly disconnected by the interlock circuit; the unlock indicator remains off, and the moving iron core locks the latch stop, indicating that unlocking is not permitted.
b. In special circumstances requiring unlocking, retrieve the unlock key, insert it into the unlock slot, and turn the key 90° in the direction indicated on the panel to the “1” position, which corresponds to the “stop position,” thereby pushing the moving iron core away from the latch stop.
c. (Same as step b in the normal operating procedure) to enable the “manual unlock” function.

Note: The unlocking process for the unlock key involves pushing the moving iron core away from the latch stop, thereby releasing the locked state. However, to actually unlock the lock, the latch must be moved using the toggle or handle; therefore, the unlock key cannot be used directly to open the lock.

DSN-AMY(Z) Pull-Turn Electromagnetic Lock

Technical Specifications

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