ABB FEX300 Operating Instruction page 134

Extended diagnostic functions
Power Spectrum
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Amplitude 1 (n)
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The measured values indicate possible disturbances of the device's grounding line at the time of
the test.
No or minor disturbance:
• When the power spectrum is above 1000.
• When the four measured amplitude values are above 10.
Check the device grounding (!):
• When the power spectrum is below 1000.
• When the four measured amplitude values are below 10.
134
Grounding Check
335
OK
Grounding Check
2,7
OK
FEX300, FEX500
5. Use or to select "Power Spectrum".
6. Use to call up the parameter for display.
7. Use or to select "Amplitude 1 (n)".
8. Use to call up the parameter for display.
OI/FEX300/FEX500-EN