Arc Inductor Fiber-Optic Arc-Flash Protection Sensor
This is a JINSHANG TECH optical sensing element for arc-flash relays, transmitting arc light from within a panel to a fast-acting protection unit.
Because the optical path is non-conductive, the unit provides electrical isolation between connected equipment and can be routed past motors, drives and power wiring without picking up noise.
Key Characteristics
- Operating temperature range: -55~+85C
- Standard length: 1m, Accept customization
- Certified to ISO9001,ROHS...
- Housing/jacket color: Gray,White
- PMMA (polymethyl methacrylate) core for high light transmission and low-cost optical links
- Engineered to support millisecond-class relay tripping
- Point or loop coverage for complete compartment monitoring
Typical Applications
The unit is commonly used for arc-flash detection in low- and medium-voltage switchgear, and fiber probes paired with arc-protection relays and inductors. The result is a reliable, repeatable build that tolerates the routing, vibration and repeated handling typical of production installations.
Frequently Asked Questions
Q: Why use fiber rather than an electrical sensor? A: The fiber is non-conductive and immune to EMI, so it can be placed deep within high-voltage compartments without adding an electrical ignition path.
Q: How does fiber-optic arc-flash detection work? A: A light-collecting fiber or probe inside the panel captures the flash of an arc and sends it to a relay, which trips the breaker in milliseconds — far faster than overcurrent detection alone.
Q: Where is it installed? A: Point sensors cover likely fault locations, while loop fiber spans a whole compartment, chosen by the switchgear layout.
Q: What components are needed? A: The sensing fiber/probe is paired with an arc-protection relay, current-confirmation units and an inductor/trip system as specified by the protection design.
Find related POF cables, connectors and patch cords at www.tocpfibercable.com.