Welcome

Hochiki Shunt Diode Safety Barrier

More Views

Hochiki Shunt Diode Safety Barrier
QFC: 399.429
Model Z787 is an intrinsically safe, zone-powered, Zener-diode barrier for use in conventional fire detection systems for protection within hazardous areas. Each Zone contains two stages of pulse-tested Zener or forward-connected diodes and an 'infallible' terminating resistor. In the event of an electrical fault in the safe area, the diodes limit the voltage that can reach the hazardous area and the resistor limits the current. A fuse protects the diodes, and the two stages of voltage limitation ensure continued safety if either stage should fail. No active output-current limiting circuits are employed. The unit is certified 'ia' for all zones and 'IIC' for all explosive atmospheres.

Manufacturer part number: Z787
Description

Details

Model Z787 is an intrinsically safe, zone-powered, Zener-diode barrier for use in conventional fire detection systems for protection within hazardous areas. Each Zone contains two stages of pulse-tested Zener or forward-connected diodes and an 'infallible' terminating resistor. In the event of an electrical fault in the safe area, the diodes limit the voltage that can reach the hazardous area and the resistor limits the current. A fuse protects the diodes, and the two stages of voltage limitation ensure continued safety if either stage should fail. No active output-current limiting circuits are employed. The unit is certified 'ia' for all zones and 'IIC' for all explosive atmospheres.
Additional Information

Additional Information

Manufacturer part number Z787
Brand Hochiki
Technology Conventional
Reviews

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.