METREL MI 3122 User Manual

MI 3122 Smartec Z Line-Loop / RCD Technical specifications
47
8.1.3 Trip-out time
Complete measurement range corresponds to EN 61557 requirements.
Maximum measuring times set according to selected reference for RCD testing.
Measuring range (ms) Resolution (ms) Accuracy
0.0  40.0
0.1
1 ms
0.0  max. time * 3 ms
* For max. time see normative references in 4.2.6 – this specification applies to max. time
>40 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 type A).
2I
N
is not available for I
N
=1000 mA (RCD type A).
Specified accuracy is valid for complete operating range.
8.1.4 Trip-out current
Trip-out current
Complete measurement range corresponds to EN 61557 requirements.
Measuring range I

Resolution I

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)
0.2I
N
 2.2I
N
(A type, I
N
<30 mA)
Trip-out time
Measuring range (ms) Resolution (ms) Accuracy
0  300
1
3 ms
Contact voltage
Measuring range (V) Resolution (V) Accuracy
0.0  19.9
0.1
(-0 % / +15 %) of reading  10 digits
20.0  99.9
(-0 % / +15 %) of reading
The accuracy is valid if mains voltage is stabile during the measurement and PE terminal
is free of interfering voltages.
Specified accuracy is valid for complete operating range.
8.2 Fault loop impedance and prospective fault current
8.2.1 No disconnecting device or FUSE selected
Fault loop impedance
Measuring range according to EN61557 is 0.25   9.99k.
Measuring range (
) Resolution ()
Accuracy
0.00  9.99
0.01
(5 % of reading + 5 digits)
10.0  99.9
0.1
100  999
1
 10 % of reading
1.00k  9.99k
10

METREL MI 3122 Specifications

General

Brand	METREL
Model	MI 3122
Category	Multimeter
Language	English