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SPD200K/300K
Figure 6: Diagnostic Display Panel
Phase A, B & C:
Green LED indicators—one per phase. Green is good. Out indicates problem. Every
suppression element in this SPD is monitored. (N-G indicates on Phase A)
Service LED (Red):
LED illuminates in the event of problems. This indicator is logic-connected to the Phase
LEDs. Should a Phase LED go out the Service LED will illuminate and the Audible Alarm will sound.
Test:
Tests red Service LED and Audible Alarm, and changes state of Dry Contacts.
Alarm Silence:
Turns Audible Alarm off. (Alarm is deactivated when the Silence LED is illuminated.)
Surge Counter Count:
Increments optional surge counter by one. (+1)
Surge Counter Reset:
Resets optional surge counter to zero. (0)
Audible Alarm
Push the alarm silence button to enable or disable the alarm (see Figure 6). If the service LED is lit the alarm is
enabled. If the service LED is not lit the alarm is disabled.
Surge Counter
The surge counter displays the number of transient voltage surges since the counter was last reset. The
counter is battery powered to retain memory in the event of a power loss to the SPD. To reset the surge
counter, press the button on the front display. This will reset the counter to zero. To test the surge counter
functionality press the count button located on the front panel. This will incrementally increase the surge
counter by one.
