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
All TLX components are customized to fit system requirements, meaning technical specifications are unique to each customer and design. Examples given on our website are for illustration purposes only.
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