Operation Manual

30 GMC-I Messtechnik GmbH
Measurements: V/Hz – R
SL
– Ω – – Temp – – m – M Ω
ISO
– A/Hz
5.1.3 Transient Overvoltages
The multimeters are protected against transient overvoltages of
up to 4 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 amounts to
1200 V
RMS
. Additional 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-
voltage probe, e.g. the HV3
1)
of the HV30
2)
from GMC-I Gossen-
Metrawatt 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 mA A
V
Temp
Ω
aEb
Voltage Measurements at Above 600 V
with the HV3 High-Voltage Probe
Black
Red
Black
x1000
x100