Seaward 220 PrimeTest - Manual (Page 26)

Operating Instructions
Primetest 220
19
8.6.11 The touch leakage current will remain displayed
until another rotary switch or pushbutton action.
8.7 Earth Loop Impedance, Zs, Test
See Figure 9.
8.7.1 Plug the supplied mains power lead into the mains
power socket 13 on the PrimeTest 220.
8.7.2 Plug the other end of the supplied mains power
lead into a mains power socket.
8.7.3 Select the Zs test function on the rotary switch 10
8.7.4 Switch on the mains power.
8.7.5 The PrimeTest 220 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 1) along with the symbol being
displayed in the steady state. A fault condition will
inhibit the
Zs test.
If a power test is selected but the mains supply
has not been connected to the PrimeTest 220
then PE and PN symbols will flash and the test
is inhibited.
8.7.6 To start an earth loop impedance test press the
button 9 .
8.7.7 Thelarge display 2 indicates a digital resistance
value, in Ω .
8.7.8 The earth loop impedance value will remain
displayed until another rotary switch or push button
action.
PrimeTest 220 REV 1 5/12/05 1:52 pm Page 24