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Disconnect power from machine.
Set the meter for amps AC and connect the meter in series with the ground wire
provided to the machine. If a recording meter is used (Fluke 87), set to 100 ms
record mode. A recording meter is the preferred measurement for intermittent
problems.
Record value in A rms.
Set the meter for DC amps and record value in Amps DC.
The expected measured value should be 0 .0 Amps.
If measured value is greater than, or equal to, .25 Amps, a problem exists.
Isolate compressor package from other equipment to determine the source of
ground current.
Internally induced ground current, power on state:
A Fluke 87 (or equivalent) meter can be used to measure ground current.
Disconnect power from machine.
Set the meter for amps AC and connect the meter in series with the ground wire
provided to the machine. If a recording meter is used (Fluke 87) then set to 100
ms record mode. A recording meter is the preferred measurement for
intermittent problems.
Apply power to machine.
Record value in A rms.
Set the meter for DC amps and record value in Amps DC.
The expected measured value should be 0 .0 Amps.
If measured value is greater than, or equal to, .25 Amps, a problem exists.
Isolate electrical devices in compressor package and determine the source of
ground current.
Causes may include: faulty wiring, moisture contamination of any electrical
connections, motor overloads (current transformer type), control transformer,
insulation breakdown of power leads, externally wired devices (remote start/stop,
remote starter wiring, Sequencer, etc.)
Internally induced ground current, Compressor Run Mode:
A Fluke 87 (or equivalent) meter can be used to measure ground current.
Disconnect power from machine.
Set the meter for amps AC and connect the meter in series with the ground wire
provided to the machine. If a recording meter is used (Fluke 87), set to 100 ms
record mode. A recording meter is the preferred measurement for intermittent
problems.
Apply power to machine.
Start machine.
Record value in A rms.
Set the meter for DC amps and record value in Amps DC.
The expected measured value should be 0 .0 Amps.
Load machine.
Record value in A rms.
Summary of Contents for INTELLISYS SSR Series
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