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Protects alarm control equipment and detectors from induced AC
and nearby lightning. |
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Clamps 12VDC against electrical spikes and connects between
12VDC supply and mains earth. |
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Connect red+ and black- across the 12VDC auxiliary supply and
green to mains earth. |
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Essential for control panels and PSUs. |
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The PO05 will decouple induced AC from every alarm cable
connected to the panel and clamp the 12VDC supply against spikes
to the control panel, alarm detectors and plug-on communicators.
Both the PO05 and HP05 should be fitted as standard to protect
against false alarms and system malfunctions caused by induced
AC and nearby lightning. To prevent such false alarms, fit an
PO05 to every alarm system as standard - just one to the control
panel and each PSU. Alarm Troubleshooting Tip: (Testing For
Induced AC Voltage) 1. Switch multimeter to 20VAC range.
2. Connect test probes across the 12VDC+ to PIRs and mains
earth.
3. Reading obtained should not exceed 1.2VDC.
4. If high induced AC voltage is measured, fit an PO05 to the
control panel (and any PSU) as described.
5. Retest with meter to confirm induced AC voltage reading drops
to within 0.5VAC. |
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