MI 3152(H)
Eurotest
XC (2,5 kV)
Tests and measurements
107
7.7.3 RCD I
– Trip-out current
The instrument increases the test current in small steps through appropriate range as follows:
RCD type
Slope range
Waveform
Notes
Start value End value
AC, EV, MI
(a.c. part)
0.2
I
N
1.1
I
N
Sine
All models
A, F (I
N
30 mA)
0.2
I
N
1.5
I
N
Pulsed
A, F (I
N
= 10 mA)
0.2
I
N
2.2
I
N
EV, MI
(d.c. part)
0.2
I
N
2.2
I
N
DC
B, B+
0.2
I
N
2.2
I
N
DC
Model MI 3152 only
Table 7.2: Relationship between RCD type, slope range and test current
Maximum test current is I
(trip-
out current) or end value in case the RCD didn’t trip-out.
Test procedure
Enter the
RCD I
function.
Set test parameters / limits.
Connect test cable to the instrument.
Connect test leads or Plug commander to the object under test, see
Start the measurement.
Save results (optional).
Figure 7.30: Examples of Trip-out current measurement result
Test results / sub-results
I
∆
Trip-out current
Uc
Contact voltage
Uc I
∆
Contact voltage at trip-out current I
∆
or no
value if the RCD didn’t trip
t I
∆
Trip-out time at trip-out current I
∆
