Seaward 200 PrimeTest - Manual (Page 19)

Attention - the differential leakage current measurement can be
affected by exposure of the PrimeTest 200 to magnetic fields or
current being absorbed by the EUT during differential leakage
measurements.
Attention - where the input current waveform displays a crest factor
of 2 then a percentage error of 2.2% is recorded on the
PrimeTest 200 measured value.
8.3 Residual Current Device, RCD, Test
See figure 5
Attention - The Red or Black 4mm test sockets must not be used
whilst the PrimeTest 200 is performing an RCD / Earth Loop test.
Electric Shock Danger!
8.3.1 Plug the PrimeTest 200 into the RCD using the supplied IEC lead. The
adaptor is then plugged into a mains power socket.
8.3.2 Select the RCD test function on the rotary switch 10 .
8.3.3 Switch on the mains power.
8.3.4 The PrimeTest 200 automatically checks the wiring of the power socket
being used. If the line potentials are correct then the LCD will display the
symbols PE and PN in the steady state. Where a fault exists then the
appropriate symbol will flash (see Appendix 2) along with the symbol
being displayed in the steady state. A fault condition will inhibit the RCD test.
If a power test is selected but the mains supply has not been
connected to the PrimeTest 200 then PE and PN symbols will
flash and the test is inhibited.
8.3.5 The earth loop resistance is checked and an ohmic range selected on
the large digital display. This resistance value is displayed until the
button 9 is pressed.
8.3.5A Schuko Version. The earth loop resistance range is inhibited.
8.3.6 To start the RCD test, press the button 9 .
8.3.7 The PrimeTest 200 will produce a test current of 30mA r.m.s. in the
protective earth of the supply. The test will commence at the start of a
positive half cycle.
8.3.8 The RCD will trip. The time taken to trip for the positive half cycle, or the
default time if no trip occurred is displayed on the PrimeTest 200.
8.3.9 A flashing RCD time and displayed ✗ indicates that the RCD has failed
to trip within 500ms.
8.3.10 Re-apply power to the PrimeTest 200 by resetting the RCD and press
the button 9 .
8.3.11 The PrimeTest 200 will produce a test current of 30mA r.m.s. in the
protective earth of the supply. The test will commence at the start of a
negative half cycle.
8.3.12 The RCD will trip. The time taken to trip for the negative half cycle, or the
default time if no trip occurred is displayed on the PrimeTest 200.
8.3.13 A flashing RCD time and displayed ✗ indicates that the RCD has failed
to trip within 500ms.
8.3.14 The RCD trip time will remain displayed until another rotary switch or
push button action.
PrimeTest 200
Operating Instructions
9