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MI 3152(H) EurotestXC (2,5 kV)
AUTO IT – Auto test for IT earthing system
7.28
(MI 3152 only)
Tests / measurements implemented in AUTO IT
Voltage
Z line
Voltage Drop
ISFL
IMD
Measurement parameters / limits
Fuse type
Selection of fuse type [Off, gG, NV, B, C, D, K, Custom]
Fuse I
Rated current of selected fuse
Fuse t
Maximum breaking time of selected fuse
Rated current for U measurement (custom value)
1)
I (U)
Test
Test mode [MANUAL R, MANUAL I, AUTO R, AUTO I]
Timer (AUTO R and AUTO I test modes) [1 s ... 99 s]
t step
Isc factor
Isc factor [0.20 ... 3.00]
Limit(dU)
Maximum voltage drop [3.0 % ... 9.0 %]
Min. insulation resistance [Off, 5 k ... 640 k],
Rmin(R1,R2)
Imax(I1,I2)
Max. fault current [Off, 0.1 mA ... 19.9 mA]
Imax(Isc1,Isc2)
Maximum first fault leakage current [Off, 3.0 mA ... 19.5 mA]
Ia(Ipsc (LN))
Minimum short circuit current for selected fuse or custom value
1)
Applicable if Fuse type is set to Off or Custom.
Refer to Fuse tables guide for detailed information on fuse data.
Figure 7.93: AUTO IT menu
155
Tests and measurements
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