User Manual

34 GMC-I Messtechnik GmbH
V/Hz, , Temperature, and A/Hz Measurements
5.1.3 Transient Overvoltages
The multimeters are protected against transient overvoltages of
up to 6 kV with wave-front durations of 1.2 ms and halftimes of 50
s 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 s. Continuous load capacity amounts to 1200 V
RMS
. Addi-
tional influence error caused by the KS30 measuring adapter
amounts to approximately -2%.
5.1.4 Voltage Measurements at Above 600 V
Voltages of greater than 600 V can be measured with a high-volt-
age 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

Voltage Measurements at Above 1000 V
with the HV3 High-Voltage Probe
Black
Red
Black
x1000
x100