ST Fiber Pigtail Fiber-Optic Arc-Flash Protection Sensor
This is a JINSHANG TECH fiber-optic component for arc-flash protection systems, using a light-collecting fiber/probe to detect the intense light of an electrical arc in switchgear.
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,CE
- Housing/jacket color: Black
- Point or loop coverage for complete compartment monitoring
- Light-speed detection of arc flash using the flash's own optical signature
- Non-conductive sensing fiber safe to route among busbars and breakers
- Engineered to support millisecond-class relay tripping
Typical Applications
The unit is commonly used for arc-flash detection in low- and medium-voltage switchgear, retrofit arc-light sensing for motor control centers and panels, 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: 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: 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: 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.
Q: Where is it installed? A: Point sensors cover likely fault locations, while loop fiber spans a whole compartment, chosen by the switchgear layout.
Find related POF cables, connectors and patch cords at www.tocpfibercable.com.