Open ground check. SKF Baker AWA-IV 4 kV, Baker AWA-IV 12 kV, Baker AWA-IV 12 HO, Baker AWA-IV Series, Baker AWA-IV 2 kV

Baker AWA-IV troubleshooting

NOTE

It is not necessary to run the output control at a high level to determine if the Baker

AWA-IV is working properly.

If the display still shows no voltage bar, call the service department. Use a meter to confirm the insulation resistance of the device being tested.

Current bar operation can be tested by shorting test lead 1 to the ground lead. Under this condition, the voltage bar will not move off the zero line and the current bar should rise very rapidly and activate the HiPot overcurrent trip warning light (HiPot trip). If the HiPot Trip light does not light, check for open test leads at either test lead 1 or the ground lead (see “Open ground check” below). If the problem persists, contact the service department.

HiPot overcurrent trip check

1) Either the HiPot trip lamp does not activate under known shorted conditions, or it will not go out when test is discontinued.

Call the service department immediately for assistance. Please record information off the unit and the specific problem prior to calling.

Open ground check

The open ground warning prevents testing.

Answer these questions:

• Has the unit recently been moved to a new location where the outlet might not be grounded?

• Is the unit being operated in a field where the AC power source is unknown?

• Is the unit being operated on a scope cart that has its own outlet or power source?

• Is the unit being operated using a two-wire extension cord?

• Is the unit being operated on a transformer-isolated circuit?

If you answer “yes” to any of these questions, the unit is probably operational and indicating that there is open AC line ground connection.

For the first three questions above, use an outlet analyzer to ensure proper wiring connections to the outlet.

Limited output surge waveform

The display shows a limited output (amplitude) surge waveform. The display rises normally, but stops at some point. Alternatively, you must continually increase the output control for successive tests to achieve the same output test amplitude.

Call the service department immediately for assistance on this or any other abnormal condition noted. Please record basic information from the analyzer and the specific problem prior to calling.

PUB CM/I4 71-015 EN V13.2 Static Motor Analyzer—Baker AWA-IV User Manual 151