Operation Manual

32 GMC-I Messtechnik GmbH
V/Hz, Ω, Temperature, and A/Hz Measurements
5.1.4 Transient Overvoltages
The multimeters are protected against transient overvoltages of
up to 8 kV with wave-front durations of 1.2 ms and halftimes of
50 μs in the voltage measuring range. If longer pulse durations are
expected, for example when conducting measurements at trans-
formers or motors, we recommend the use of our KS30 measur-
ing adapter. It provides protection against transient
overvoltages of up to 6 kV with wave-front durations of 10, and
halftimes of 1000 μs.
Continuous load capacity is 1200 V
RMS
. Additional influence error
caused by the KS30 measuring adapter amounts to approxi-
mately -2%.
5.1.5 Voltage Measurements at Above 1000 V
Voltages of greater than 1000 V can be measured with a
high-voltage probe, e.g. the HV3
1)
or the HV30
2)
from GMC-I
Messtechnik GmbH. It is absolutely essential to earth the ground
terminal in this case. Observe all applicable safety precautions!
1)
HV3: 3 kV
2)
HV30: 30 kV, for (DC) voltages only
COM
V
Tem p
Ω
Voltage Measurements at Above 1000 V
with the HV3 High-Voltage Probe
Black
Red
Black
x1000
x100