MI 3321 MultiservicerXA
Technical specifications
24
0 ms
… 500 ms
1 ms
3 ms
Test current ......................................
½
I
N
, I
N
, 2
I
N
, 5
I
N
5
I
N
is not available for I
N
=1000 mA (RCD type AC) or I
N
300 mA (RCD types A,
B*).
2
I
N
is not available for I
N
=1000 mA (RCD type A) or I
N
300 mA (RCD type B*).
1
I
N
is not available for I
N
=1000 mA (RCD type B*).
Specified accuracy is valid for complete operating range.
3.13.4 Trip-out current
Trip-out current
Complete measurement range corresponds to EN 61557 requirements.
Range
Resolution
Accuracy
0.2
I
N
… 1.1
I
N
(AC type)
0.05
I
N
0.1
I
N
0.2
I
N
… 1.5
I
N
(A type, I
N
≥30 mA)
0.05
I
N
0.1
I
N
0.2
I
N
… 2.2
I
N
(A type, I
N
<30 mA)
0.05
I
N
0.1
I
N
0.2
I
N
… 2.2
I
N
(B type)*
0.05
I
N
0.1
I
N
Trip-out time
Range
Resolution
Accuracy
0 ms
… 300 ms
1 ms
3 ms
Contact voltage
Range
Resolution
Accuracy
0.0 V
… 19.9 V
0.1 V
(-0 % / +15 %) of reading
10 digits
20.0 V
… 99.9 V
0.1 V
(-0 % / +15 %) of reading
The accuracy is valid if mains voltage is stable during the measurement and PE
terminal is free of interfering voltages.
Trip-out measurement is not available for I
N
=1000 mA (RCD type A and type B*).
Specified accuracy is valid for complete operating range.
3.14 Fault loop impedance
3.14.1 Zs
Fault loop impedance
Measuring range according to EN 61557-3 is 0.25
… 9.99 k
.
Range (
)
Resolution (
)
Accuracy
0.00
… 9.99
0.01
(5 % of r 5 digits)
10.0
… 99.9
0.1
100
… 1999
1
10 % of reading
Prospective fault current
(calculated value)
Measuring range (A)
Resolution (A)
Accuracy
0.00
… 9.99
0.01
Consider accuracy of fault
