Operation Manual

62 GMC-I Messtechnik GmbH
Technical Data
Insulation Resistance Measurement
1)
1)
During insulation measurement (M
@UISO
): If „Error“ is displayed >>
limits:
U
interference
> 10....20 V and U
interference
 U
ISO
, Ri < 50 k@ Uiso 50 V,
Ri < 100 k @ Uiso 100 V, Ri < 250 k@ Uiso 250 V, Ri < 500 k@ Uiso 500 V,
Ri < 1000 k @ Uiso 1000 V
2)
Interference voltage measurement TRMS (V AC + DC) with 1 M input resistance,
Bandwidth 15 Hz ... 500 Hz, measuring error 3% + 30 Digit
and in the 3 V and 30 V range, all values < 0.29 V are suppressed
Interturn Short-circuit Measurement (METRAHIT COIL only)
2)
Interference voltage measurement TRMS (V AC + DC) with an input resistance of
1 M, frequency response width 15 Hz ... 500 Hz, accuracy of 3% + 30 digits;
in the 3 V and 30 V range, all values below 0,29 V are suppressed
Short circuit measurement in the inductivity range:
10 H to 50 mH @ 100 Hz
Internal Clock
Time format TT.MM.JJJJ hh:mm:ss
Resolution 0.1 s
Accuracy 1 minute per month
Temperature influence 50 ppm/K
Influencing Quantities and Influence Error
1)
With zero balancing
Measuring Range Resolution
Test voltage
U
ISO
Digital Display
Intrinsic
Uncertainty
under Reference
Conditions
0,3 V ... 1000 V
2)
Ri=1M  3 + 30 > 100 Digit
5 ... 310.0 k 0.1 k
50/100/250/500 V
3 + 5
0.280 ... 3.100 M 1 k
50/100/250/500/1000 V
3 + 5
02.80 ... 31.00 M 10 k
50/100/250/500/1000 V
5 + 5
028.0 ... 310.0 M 100 k
50/100/250/500/1000 V
5 + 5
0280 ... 3100 M 1 M
500/1000 V
5 + 5
Measuring
Function
Nom.
Voltage
U
N
Open-
Circuit
Voltage
U
o
Nom.
Cur-
rent I
N
Short-
Circuit
Cur-
rent I
k
Acoustic
Signal
for
Overload Capacity
Value Time
U
interference
/
M
@UISO
— —— — U>1000V 1000 V dauernd
M
@UISO
50, 100,
250,
500 V
max.
1.1x U
Iso
1.0 mA < 1.2
mA
U>1000V 1000 V 10 s
M
@UISO
1000 V max.
1.1x U
Iso
0.5 mA < 1.2
mA
U>1000V 1000 V 10 s
Measuring Range Resolution
Nominal Voltage
U
ISO
Intrinsic Uncertainty at
Reference Conditions
 (% rdg. + d)
0.3 V ... 1000 V
2)
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 Quantity /
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 F1 + 5
Hz 0.2 + 5
C/F (Pt100/Pt1000) 0.5 + 5