Sonel MPI-520 - Page 60

MPI-520 OPERATING MANUAL version 3.4
58
RCD trigger and response 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 differential 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 forced leakage current at measurement of RCD disconnection 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
Measurement of resistance-to-earth R
E
Selected
nominal cur-
rent 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 dig-
its
30 mA
0.01 k...1.66 k
12 mA
0..+10% w.m. ±5 dig-
its
100 mA
1 ..500 
1
40 mA
0..+5% w.m. ±5 dig-
its
300 mA
1 ..166 
120 mA
500 mA
1 ..100 
200 mA
1000 mA
1 ..50 
400 mA