Eaton SPD Series for Mounting External to Electrical Distribution Equipment Installation Manual IM01005031E—Rev 09 43
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Many SPD failures result from improper installation. Once the Power Xpert SPD is installed properly, it is a
highly reliable unit.
If the SPD does not function properly, first confirm that it is installed properly. See Chapter 2 Installation.
If the SPD malfunctions after it has been operating routinely, refer to Table 5. This troubleshooting chart
identifies possible causes and solutions to the malfunction. Further assistance may be obtained by calling
Eaton’s Applications Engineers, at 1-800-809-2772 or email SPD@eaton.com, including being directed to the
warranty process if applicable.
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Phase LEDs are green (1 per phase) and neu/gnd
LED is green.
Normal operation. N/A.
Audible alarm OFF, form C (N.C.) contact in the
CLOSED state.
.
Normal operation. N/A.
One phase LED is red, audible alarm is ON . Phase protection compromised or lost . Replace SPD.
Extended temporary overvoltage (TOV). Check electrical system for TOV
sources, correct, replace SPD.
Significant surge event. Replace SPD.
Neu/gnd LED is red, audible alarm is ON (for
models with neutral connections).
Neu/gnd protection is compromised or
lost.
Replace SPD.
Significant surge event.
Replace SPD.
All phase LEDs are red, audible alarm is ON. All phase protection has been lost. Replace SPD .
SPD rated voltage is less than system
voltage.
Replace SPD with correct voltage
model.
Extended temporary overvoltage (TOV). Check electrical system for TOV
sources, correct, replace SPD.
Significant surge event Replace SPD.
One of the display LEDs is red. audible alarm is
OFF.
Audible alarm silence button has been
depressed and Alarm is silenced.
Normal operation
If power is cycled and a fault
condition still exists, the audible
alarm will reactivate. Replace SPD.
All LEDs are OFF, LCD display is OFF. SPD is not connected to a power source. Check system voltage at SPD
connection.
Check SPD connections.
One or more phase LED is yellow and neu/gnd
LED is green.
SPD has lost some protection on the
phase with the yellow LED.
Monitor SPD, some protection has
been lost.
Surge counts are accumulating rapidly. Noise on phase line. Contact an Eaton Customer Support
at 1-800-809-2772 or email
SPD@eaton.com.
Stuck button error on the local display. One or more of the buttons were
depressing during startup.
Clear buttons of any obstructions, if
that doesn’t resolve the matter
contact Eaton Customer Support at
1-800-809-2772 or email
SPD@eaton.com.
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