Megger Baker AWA-IV User Manual page 79

The final voltage reached for each lead tested is displayed in the text boxes to the right of the graph area. The EAR
values shown correspond to the measured L-L EAR between the three leads during the test.
In the area just above the waveform display area, you will see a number of check boxes (depending on the model)
that enable other Surge test features.
Enable PP—check when the AWA serves as a host to a Baker power pack.
„
Pause Between Leads—check when you need additional time between testing leads, typically to reconfigure
„
the leads before continuing with testing.
„ ZS Override—checking this box disables the zero start feature (voltage output beings at zero volts) and allows
the tester to apply full output voltage to the unit under test. The feature is used in situations where you want
to apply a higher voltage to a unit under test without ramping up. For example, you might test an initial single
coil, ramping up to the target voltage, then select ZS Override and apply the same voltage level to subsequent
identical coils.
Hi L—The Hi L (high impedance) feature extends the Baker AWA-IV 4 kV model's base surge test circuitry range.
„
It is used when testing high inductance devices such as
characteristics. For more information on applying the feature, contact Megger Baker technical support.
„ Arm—check this box to set up and conduct armature testing features. A Baker ZTX or Baker power pack with
armature testing capability is required to use this feature. Refer to chapter 7, "Using the Baker ZTX with Baker
AWA-IV Analyzers" for more information. Similar information is also found in the Baker power packs user
guides.
www.megger.com
Fig 71: Final peak voltages and EAR values.
Fig 72: Final peak voltages and EAR values.
shunt fields to provide higher sensitivity evaluation
Baker AWA-IV Software Overview
67