SPECIAL SILICA FIBER
SMA905 Probe Fiber-Optic Arc-Flash Protection Sensor
SMA905 fiber-optic arc-flash protection component — non-conductive light-collecting fiber/probe for millisecond arc detection in low- and medium-voltage switchgear.
Specifications
- Type
- fiber optic connector, Terminal Connectors
- Certifaction
- ISO9001,ROHS,CE
- fiber type
- SM,MM
- connector Type
- Fiber optic connector SMA905 probe
- Ferrule material
- Ceramic
SMA905 Probe Fiber-Optic Arc-Flash Protection Sensor
SMA905 is a JINSHANG TECH fiber-optic sensor/probe for arc-flash detection in medium- and low-voltage switchgear.
Because the optical path is non-conductive, the SMA905 provides electrical isolation between connected equipment and can be routed past motors, drives and power wiring without picking up noise.
Key Characteristics
- Connector/interface: Fiber optic connector SMA905 probe
- Certified to ISO9001,ROHS,CE
- 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
- Immune to electrical noise inside high-voltage switchgear panels
Typical Applications
The SMA905 is commonly used for 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: 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.
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.
Find related POF cables, connectors and patch cords at www.tocpfibercable.com.
