48
GMC-I Messtechnik GmbH
Insulation Measurement
1
TRMS interference voltage measurement (V
AC+DC
) with 1 M
input resistance,
frequency response width: > 65 Hz ... 500 Hz, accuracy: 3% + 30 digits
Short-circuited coil test (only with optional COIL adapter)
1
TRMS interference voltage measurement (V
AC+DC
) with 1 M
input resistance,
frequency response width: > 65 Hz ... 500 Hz, accuracy: 3% + 30 digits
Short-circuited coil test within an inductance range of:
10 μH to 50 mH @ 100 Hz
Internal Clock
Time format
DD.MM.YYYY hh:mm:ss
Resolution
0.1 s (measured values timestamp)
Accuracy
1 minute per month
Temperature influence 50 ppm/K
Reference Conditions
Ambient temperature
+23
C
2 K
Relative humidity
40%
75%
Measured quantity frequency 45 Hz
65 Hz
Measured quantity waveform Sinusoidal
Supply voltage
4.0 V
0.1 V
Influencing Quantities and Influence Error
1
With zero balancing
Frequency Influence for V
AC
V
AC+DC
Voltage Ranges
1
For sinusoidal input signals > 10% to 100% of the range (mV range: as 30% of the range), at 1% to 10%
of the range: f < 50 kHz, intrinsic error increased by 0.2% of the upper range limit.
2
Overload capacity of the voltage measurement input:
Power limiting: frequency x voltage max. 6 x 10
6
V x Hz @ U > 100 V
Frequency Influence for I
AC
/ I
AC+DC
Current Measuring Ranges
1
For sinusoidal input signals > 10% to 100% of the range.
1
Except for sinusoidal waveform
Response Time
(after manual range selection)
Measuring Range
Resolution
Nominal Voltage
U
ISO
Intrinsic Uncer-
tainty at Reference
Conditions
(% rdg. + d)
3 ... 1000 V
1
1 V
Ri=1M
3 + 3
300 k
0.1 k
50/100/250/500 V
2 + 10
3 M
1 k
50/100/250/500/1000 V
2 + 10
30 M
10 k
50/100/250/500/1000 V
2 + 10
300 M
100 k
50/100/250/500/1000 V
5 + 10
3000 M
1 M
250, 500, 1000 V
5 + 10
Measuring
Function
Nom.
Voltage
U
N
Open-
Circuit
Voltage
U
o
max.
Nom.
Cur-
rent I
N
Short-
Circuit
Cur-
rent I
k
Acoustic
Signal for
Overload Capacity
Value
Time
U
interference
/
M
@
U
ISO
—
—
—
—
U > 1000
V
1000 V
Continu-
ous
M
@
U
ISO
50
100
1.2 x
U
INS
1.0 mA
< 1.4
mA
U > 1000
V
1000 V 10
s
250,
500 V
1000 V
1.12x
U
INS
Measuring Range
Resolution
Nominal Voltage
U
ISO
Intrinsic Uncer-
tainty at Reference
Conditions
(% rdg. + d)
0.3 V ... 1000 V
1
Ri=1M
3 + 30 > 100 digits
10.0 ... 30.9 μs
0.1 [μs]
1000 V
10 + 5 digits
31 ... 250 μs
1 [μs]
Influencing
Quantity
Sphere of
Influence
Measured Qty./
Measuring Range
1
Influence Error
(...% rdg. + ... d)/10 K
Temperature
0
C ... +21
C
and
+25
C
... +40
C
V
0.2 + 5
V
0.4 + 5
300
... 3 M
0.5 + 5
30 M
1 + 5
mA/A
0.5 + 5
mA/A
0.8 + 5
30 nF ... 300
F
2 + 5
Hz
0.2 + 5
C/
F (Pt100/Pt1000)
0.5 + 5
Deviation
1
Frequency Range
300 mV range
± (... % rdg. + ... digits)
3 V, 30 V, 300 V range
2
± (... % rdg. + ... digits)
1000 V range
2
± (... % rdg.)
15 Hz ... 45 Hz
2 + 30
2 + 30
2 + 30
> 65 Hz ... 1 kHz
0.5 + 30
0.5 + 30
1 + 30
> 1 kHz ... 10 kHz
2 + 30
1.5 + 30
10 + 30
> 10 kHz ... 20 kHz
3 + 30
1.5 + 30
–
> 20 kHz ... 50 kHz
3 + 30
5 + 30
–
> 50 kHz ... 100 kHz
10 + 30
10 + 30
–
Influence Error
1
Frequency Range
300
A to 300 mA
± (... % rdg. + ... digits)
1 A range
± (... % rdg. + ... digits)
15 Hz ... 45 Hz
2 + 30
2 + 30
> 65 Hz ... 1 kHz
1 + 30
1 + 30
> 1 kHz ... 2 kHz
1 + 30
1 + 30
> 2 kHz ... 5kHz
1 + 30
3 + 30
> 5 kHz ... 10 kHz
5 + 30
5 + 30
Influencing
Quantity
Sphere of
Influence
Measured Qty./
Measuring Range
Influence Error
1
Crest Factor CF
1 ... 3
V
, A
1% rdg.
> 3 ... 5
3% rdg.
Influencing
Quantity
Sphere of
Influence
Measured Qty.
Influence Error
Relative
Atmospheric
Humidity
75%
3 days
instrument off
V, A,
, F, Hz,
C
1 x intrinsic uncertainty
Battery Voltage
3.6 ... 4.2 V
Ditto
Included in intrinsic uncer-
tainty
Influencing
Quantity
Sphere of Influence
Measured Qty./
Measuring Range
Damping
Common Mode
Interference
Voltage
Interference quantity max. 1000 V
V
> 90 dB
Interference quantity max. 1000 V
50 Hz ... 60 Hz sinusoidal
3 V
,
> 90 dB
30, 300 V
> 150 dB
1000 V
> 150 dB
Series Mode
Interference
Voltage
Interference quantity: V
,
respective nominal value of the measuring
range, max. 1000 V
, 50 Hz ... 60 Hz
sinusoidal
V
> 50 dB
Interference quantity max. 1000 V
V
> 50 dB
Measured Qty./
Measuring Range
Response Time
Digital Display
Jump Function
of the Measured Quantity
V
, V
A
, A
1.5 s
From 0 to 80%
of upper range limit value
300
... 3 M
2 s
From
to 50%
of upper range limit value
30 M
,
M
@
U
ISO
Max. 5 s
Continuity
< 50 ms
C (Pt 100)
Max. 3 s
1.5 s
30 nF ... 300
F
Max. 5 s
From 0 to 50%
of upper range limit value
>10 Hz
1.5 s
