Rcd I - Trip-Out Current - METREL EurotestXC MI 3152 Instruction Manual

MI 3152(H) EurotestXC (2,5 kV)
7.7.3 RCD I – Trip-out current
The instrument increases the test current in small steps through appropriate range as follows:
RCD type
AC, EV, MI (a.c. part)
 30 mA)
A, F (I
N
A, F (I = 10 mA)
N
EV, MI (d.c. part)
B, B+
Table 7.2: Relationship between RCD type, slope range and test current
Maximum test current is I
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 Figure
7.27.

Start the measurement.

Save results (optional).
Figure 7.30: Examples of Trip-out current measurement result
Test results / sub-results
Trip-out current
I∆
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∆
Slope range
Start value End value
0.2I 1.1I
N
0.2I 1.5I
N
0.2I 2.2I
N
0.2I 2.2I
N
0.2I 2.2I
N
(trip-out current) or end value in case the RCD didn't trip-out.

Waveform
Sine
N
N
Pulsed
N
DC
N
DC
N
107
Tests and measurements
Notes
All models
Model MI 3152 only