MPI-525
– USER MANUAL
57
Measurement of resistance-to-earth R
E
Selected nom-
inal current of
RCD
Test range
Resolution
Test
current
Basic uncertainty
10 mA
0.01 k
...5.00 k
0.01 k
4 mA
0..+10% w.m.
±8 digits
30 mA
0.01 k
...1.66 k
12 mA
0..+10% w.m.
±5 digits
100 mA
1
..500
1
40 mA
0..+5% w.m.
±5 digits
300 mA
1
..166
120 mA
500 mA
1
..100
200 mA
1000 mA
1
..50
400 mA
Measurement of touch voltage U
B
related to nominal residual current
Test range according to IEC 61557: 10.0...99.9 V
Test range
Resolution
Test current
Basic uncertainty
0..9.9 V
0.1 V
0.4 x I
n
0..10% w.m.
± 5 dig-
its
10.0..99.9 V
0..15% w.m.
Measurement of RCD trip current I
A
for sinusoidal residual current
Test range according to IEC 61557: (0.3...1.0)I
Δn
Selected nomi-
nal current of
RCD
Test range
Resolution
Test current
Basic uncer-
tainty
10 mA
3.0..10.0 mA
0.1 mA
0.3 x I
n
..1.0 x I
n
5 % I
n
30 mA
9.0..30.0 mA
100 mA
30..100 mA
1 mA
300 mA
90..300 mA
500 mA
150..500 mA
1000 mA
300..1000 mA
it is possible to start the measurement from the positive of the negative half of residual current
test current pass time
............................... max. 3200 ms
Measurement of RCD trip current I
A
for residual unidirectional pulsed current and unidirectional
pulsed current with 6mA direct current offset
Test range according to IEC 61557: (0.35...1.4)I
n
for I
n
≥30 mA and (0.35...2)I
n
for
I
n
=10 mA
Selected nomi-
nal current of
RCD
Test range
Resolution
Test current
Basic uncer-
tainty
10 mA
3.5..20.0 mA
0.1 mA
0.35 x I
n
..2.0 x I
n
10 % I
n
30 mA
10.5..42.0 mA
0.35 x I
n
..1.4 x I
n
10 % I
n
100 mA
35..140 mA
1 mA
300 mA
105..420 mA
500 mA
175..700 mA
measurement can be performed for positive or negative half-periods of residual current
test current pass time
................................ max. 3200 ms
Summary of Contents for MPI-525
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