Before The Insulation Measurement - AEMC 6550 User Manual

■ Cable
Connect the red high-voltage lead between the braid and the + terminal of the instrument.
Connect the black high-voltage lead between the core and the - terminal of the instrument.
Connect the blue high-voltage lead between the insulation and the G terminal of the instrument.
Outer Insulation
Using the guard eliminates the influence of the surface leakage current.

4.4.7 Before the Insulation Measurement

It is possible to configure the measurement using the CONFIG button:
If the V-FIXED or V-VAR test voltages have been selected, it is possible to select a measurement
configuration by pressing the CONFIG button:
■ Manual Stop
■ Manual Stop + DD
■ Timed Run
■ Timed Run + DD
■ DAR
CONFIG
■ PI
Then set the type of test, the maximum current, the current range, the filtering of the measurement,
and the value of the alarm threshold by pressing the DISPLAY button:
■ Test Type
■ Maximum Output Current
■ I-range
■ Disturbance Level
■ Alarm
DISPLAY
To enable the alarm, press the ALARM button. The ALARM symbol will appear in the status line.
The ALARM symbol in the status line will blink and (if the buzzer is switched on) an audible beep will
sound if the result of the measurement is below the programmed threshold.
ALARM
Megohmmeter Models 6550/6555
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Braid
Core
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