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MI 3325 MultiServicerXD
126
t I∆N x1, (-)
……trip-out time (I
=I
N
, (-) negative polarity)
t I∆N x5, (+)
……trip-out time (I
=5
I
N
, (+) positive polarity)
t I∆N x5, (-)
……trip-out time (I
=5
I
N
, (-) negative polarity)
t I∆N x0.5, (+)
……trip-out time (I
=½
I
N
, (+) positive polarity)
t I∆N x0.5, (-)
……trip-out time (I
=½
I
N
, (-) negative polarity)
I
∆
……trip out current
I∆ (+)
……trip-out current ((+) positive polarity)
I∆ (-)
……trip-out current ((-) negative polarity)
Test parameters
IΔN
Nominal current [10 mA, 15 mA, 30 mA, 100 mA, 300 mA]
RCD Type
PRCD Type [AC, A, F, B, B+]
Mode
Test mode [single, auto]
Multiplier
Multiplication factor
IΔN [0.5, 1, 5]
Phase
Starting polarity in single mode [(+), (-), (+,-)]
Design
Design type [2 pole, 3 pole, S (3 pole), S+]
PRCD Standard
PRCD standard [General]
Test limits
Test limits for Pass / Fail statuses are set automatically, depending on set parameters.
PRCD measurement procedure
Select the PRCD function.
Set test parameters.
Connect METREL 3-phase adapter (A 1322 or A 1422) to the instrument*.
Connect the PRCD to the 3-phase adapter*.
Start measurement.
Switch ON the PRCD when prompted on the display.
Reactivate PRCD when prompted on the display.
Save results (optional).
*For more information refer to chapter
3-phase RCD test
in 3-phase AktivGT / Machine
adapter Plus A 1322 / A 1422 user manual.
Figure 6.95: Examples of PRCD measurement results
Note:
This test is applicable only with connected METREL 3-phase adapters (A 1322, A
1422).