Use The Rcd Test Functions; Rcd Trip Current Function For Installation Testers - Fluke Calibration 5322A Operator's Manual

5322A
Operators Manual

Use the RCD Test Functions

The Product Residual Current Device (RCD) function is used to calibrate the
RCD function of RCD testers and multifunction installation testers. Use the
Product Loop and Line Impedance/RCD terminals for these tests. The calibration
process checks the installation tester's RCD trip current and trip time settings by
emulating a circuit breaker with adjustable trip current and trip time. The Product
has a trip current range of 10 mA to 3000 mA in 1 mA steps. Its trip time range is
10 ms to 5 seconds. Figure 12 shows the basic configuration when performing
RCD calibration.
Power
line
The Product has two modes for RCD calibration in Installation testers, and is also
compatible with some PAT tester models:
•
•
The Product has a special function to calibrate the RCD function in PAT testers
that detects DUT trip current differentially in the L and N connections:
•

RCD Trip Current Function for Installation Testers

The Product does the RCD Trip Current calibration by monitoring current from
the DUT and displaying the measured current when it reaches the nominal set
value. The output terminals are also disconnected when the trip current level is
reached. Typically, the DUT trip current is in increments from 30 % to 150 % of
the nominal trip current in steps of several percent.
58
L
PE
N
Figure 12. Simplified RCD Scheme
Trip time
Trip current
PAT
Ground bond
resistance
decade
Sampling
Ammeter
Delay generator
L
5322A
Front
PE
panel
terminals
N
Iep187.eps