MI 3152(H)
Eurotest
XC (2,5 kV)
Technical specifications
189
12.22
Varistor test
Udc
– DC Voltage
Measuring range (V)
Resolution (V)
Accuracy
0 … 1000 (2500)*
1
(3 % of r 3 digits)
Uac
– AC voltage
Measuring range (V)
Resolution (V)
Accuracy
0 … 625 (1562)*
1
Consider accuracy of Udc
* MI 3152H only
Measurement principle .................... d.c. voltage ramp
Test voltage slope ........................... Nominal test voltage up to 1000 Vdc : 100 Vdc/s
Nominal test voltage 2500 Vdc : 350 Vdc/s (MI 3152H only)
Threshold current ............................ 1 mA
12.23
ISFL – First fault leakage current (MI 3152 only)
Isc1, Isc2
– First fault leakage current
Measuring range (mA)
Resolution (mA)
Accuracy
0.0 ... 19.9
0.1
±(5 % of r 3 digits)
Measuring resistance .................................. approx. 390
Nominal voltage ranges .............................. 93 V
U
L1-L2
134 V
185 V
U
L1-L2
266 V
12.24
IMD (MI 3152 only)
R1, R2
– Threshold insulation resistance
R (kΩ)
Resolution (kΩ)
Note
5 ... 640
5
up to 128 steps
I1, I2
– First fault leakage current at threshold insulation resistance
I (mA)
Resolution (mA)
Note
0.0 ... 19.9
0.1
calculated value*
)
Nominal voltage ranges .............................. 93 V
U
L1-L2
134 V
185 V
U
L1-L2
266 V
*
)
– Testing of insulation monitoring devices (MI 3152 only)
for more
information about calculation of first fault leakage current at threshold insulation resistance.
