MPI-525
– USER MANUAL
56
Measurement of parameters of RCD
Nominal working voltage U
n
: 110 V, 115 V, 127 V, 220 V, 230 V, 240 V
Working range of voltage
: 95…270 V
Nominal network frequency f
n
: 50 Hz, 60 Hz
Working range of frequency
: 45…65 Hz
RCD trigger and trip time test
t
A
(for t
A
mode).
Test range according to IEC 61557: 0 ms ... to the upper limit of displayed value
Type of RCD
Multiplication
factor setting
Test range
Resolution
Basic uncertainty
Standard and
short-time delay
0.5 I
n
0..300 ms
1 ms
± 2% w.m. ±2 digits
1)
1 I
n
2 I
n
0..150 ms
5 I
n
0..40 ms
Selective
0.5 I
n
0..500 ms
1 I
n
2 I
n
0..200 ms
5 I
n
0..150 ms
1)
for I
n
= 10 mA and 0,5 I
n
uncertainty is
± 2% w.m. ±3 digits
Accuracy of residual current setting:
for 1*I
n
, 2*I
n
and 5*I
n
..................................................................... 0..8%
for 0,5*I
n
....................................................................................
–8..0%
Effective value of sink current at measurement of RCD trip time
I
n
Multiplication factor setting
0.5
1
10
5
3.5
3.5
5
10
20
20
20
30
15
10.5
10.5
15
30
42
42
60
100
50
35
35
50
100
140
140
200
300
150
105
105
150
300
420
420
600
500
250
175
175
500
700
700
1000*
1000
500
1000
I
n
Multiplication factor setting
2
5
10
20
40
40
40
50
100
100
100
30
60
84
84
120
150
210
210
300
100
200
280
280
400
500
700
700
1000*
300
600
840
840
500
1000
1000
* - does not apply to U
n
= 110 V, 115 V and 127 V
Summary of Contents for MPI-525
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