Table of Contents
Advertisement
Figure 10 shows connec-
tions for testing insulation
from a supply conductor in a
switchbox to ground (motor
frame). An identical test may
be carried out from the motor
starter.
4.3
Continuity
Measurements
Once it has been verified that
no voltage is present, the
continuity check may be per-
formed.
• Set the switch to the 10Ω+
position. The measure-
ment is done automati-
cally; you do not need to
press the yellow button.
• Read the value on the
white scale 0 to 10Ω.
• Set the switch to the 10Ω– position and make sure that the needle of
the instrument reads the same value. If the second value is different
from the preceding one, add up the two readings and divide by two.
The reason for taking two different readings is to comply with the inter-
national standard VDE 0413-4. If your work does not require you to
conform to this standard, only one measurement is necessary.
• Return to "OFF" after use.
NOTE: For better measurement accuracy on the 10Ω+ and the
10Ω– ranges, measure the resistance of the leads by short-circuit-
ing them, then subtract this value from the measured values.
4.4
Resistance Measurements
• Set the switch to the 1000Ω position. The measurement is done auto-
matically; you do not need to press the yellow button.
• Read the value on the white scale 0 to 10Ω, then multiply the reading
by 100 to get the actual value measured.
Quality AEMC Products Online at:
• Return to "OFF" after use.
Megohmmeter Models 1005 and 1015
Motor Side
of Switch:
Connection
to One Leg
GlobalTestSupply
www.
Starter In
Grounded
Motor Frame
-
+
600V
!
6
Battery
OFF
MΩ - 500 V
Check
MΩ - 1000 V
1000 Ω
10 Ω +
10 Ω −
AEMC
MEGOHMMETER
MODEL 1015
I N S T R U M E N T S
Figure 10
(Model 1015 Only)
.com
sales@GlobalTestSupply.com
15
Advertisement
Table of Contents
