Seaward 250 PrimeTest - Manual (Page 33)

3.8 Performing an RCD test on an installation RCD
When performing an RCD test ensure that
the Continuity Test probe is disconnected
from the PrimeTest 250+.
Equipment which is connected downstream
of the RCD may cause measurement
inaccuracies.
Voltages between the protective conductor
and earth may infl uence measurements.
Leakage currents in the circuit may
infl uence measurements.
Potential fi elds of other earthing
installations may infl uence the
measurement.
The PrimeTest 250+ can be used to measure the
operating time of an installation RCD.
Connect the PrimeTest 250+ IEC lead to the IEC
socket of the PrimeTest 250+ and a mains outlet on
the RCD protected circuit.
To test the RCD operating time press the 30mA
RCD test key.
The mains supply status is checked and the status
is indicated using the LN, LE and NE enunciators
of the LCD.
PrimeTest 250+ Operating Instructions
31
Mains status
No mains
Earth fault
LN LE NE
Flash Flash OFF
OFF Flash Flash