Latching Technology Used to Isolate Power Faults
Customer Problem
A manufacturer of medium voltage power distribution equipment needed a solution that would actuate the fault interrupter in their pad-mounted switchgear when the system detected a safety concern. Once activated, the solenoid needed to remain in the released position until the system hardware was manually reset. The solution also needed to be stable in a wide range of temperatures.
The TLX Solution
TLX Technologies designed and produced a manually resettable latching solenoid that eliminates the durability failure modes of standard U-frame designs, is temperature stable, and can release in less than 12 milliseconds at -40˚C. A permanent magnet holds the solenoid in the latched position, and when the system detects a fault, a short pulse releases the solenoid to activate the system’s fault interrupter. A technician must manually reset the solenoid after the fault is cleared.
Manual Reset Latching Solenoid
- Release voltage
- 3 to 30 Vdc
- Minimum trip energy
- .030 J
- Coil resistance at 20°C
- 5.75 Ω ± 0.3 Ω
- Stroke
- 22.3 mm ± .64 mm
- Response time
- 12 ms max.
- Latched spring load
- 59.16 N ± 5.78 N
- Net latching force
- 53.38 N min.
- Operating temperature range
- -40°C to 50°C (-40°F to 122°F)
- Electric strength
- 500 Vac for 1 second
- Durability
- > 100K cycles
Every TLX solution is custom engineered to meet the requirements of its application. Technical specifications shown on this website are intended to illustrate typical performance and design characteristics.
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