Operation Examples - AEMC 5070 User Manual

At the end of the measurement, the
following are indicated:
• The difference ΔR in insulation resis-
tance between the final resistance (with
the highest test voltage) and the initial
resistance (with the lowest test voltage)
• The difference ΔV between the final and
initial test voltages
• The slope of the curve in ppm/V
• The capacitance
Pressing the GRAPH button displays the
resistance versus applied test voltage curve.
Using the ◄ and ► buttons, you can scroll
through the various samples recorded and
for each see:
• The insulation resistance value
• The applied test voltage
• The time of measurement

6.3 Operation Examples

Connection diagram for measurement of low resistance insulation
(e.g. motor)
62
M
RED
5078V
∆R
∆V
∆R/(R*∆V) (ppm/V)
Capacitance
Resistance
Output Voltage
Elapsed Time
MΩ
3000
2500
2000
1500
1000
500
0
BLACK
+
-
234.5M
Elapsed time 00:05:00
1:00 2:00 3:00 4:00
Megohmmeter Model 5070
24.6pA
8.5MΩ
4000V
0.28
320nF
328.5MΩ
5078V DC
04:20
5000
4000
3000
2000
1000
5:00