METREL EurotestXE User Manual

MI 3102(H) BT EurotestXE Measurements
46
5.5.3 Trip-out current (RCD I)
A continuously rising residual current is intended for testing the threshold sensitivity for RCD
trip-out. 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
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 (a.c. part)
0.2I
N
1.1I
N
Sine
Model MI 3102BT
only
B, B+, EV, MI (d.c. part)
0.2I
N
2.2I
N
DC
Maximum test current is I

(trip-out current) or end value in case the RCD didn’t trip-out.
Trip-out current measurement procedure
 Select the RCD function using the function selector keys.
 Set sub-function to RCD I using UP / DOWN keys.
 Set test parameters (if necessary).
 Connect test cable to the instrument.
 Connect test leads to the item to be tested (see Figure 5.20).
 Press the TEST key to perform the measurement.
 Store the result by pressing the MEM key (optional).
Figure 5.23: Trip-out current measurement result example
Displayed results:
I ............ trip-out current
Uci ....... contact voltage at trip-out current I or end value in case the RCD didn’t trip
t ............ trip-out time

METREL EurotestXE Specifications

General

Brand	METREL
Model	EurotestXE
Category	Measuring Instruments
Language	English