Seaward A252 User Manual
Page 31
A252 Portable Appliance Tester INSTRUMENT INTEGRITY
The Y250 FAULT SIMULATOR is supplied with the A252 specifically for this purpose, it can be used for
checking both Earthed Appliance tests and Double Insulated Appliance tests. It is recommended that such
checks are carried out weekly.
C
HECK
P
ROCEDURE
- E
ARTH
M
EASUREMENTS
Connect and set-up the instrument in the normal way and plug the simulator into the 13A Test Socket.
Attach the clip of the Earth Return lead across the two brass tags on the simulator and connect the plug
into the blue 100mA socket on the instrument.
Set the selector to Functional Earth and depress the Test button. The meter should read approximately
0.2 ohms on the 100mA scale. Release the Test button.
Move the plug of the clip lead into the 8A socket, set the selector to Earth Test and again depress the Test
button. The meter should read approximately 0.2 ohms on the 8A scale. Release the Test button.
Now move the plug of the clip lead into the 25A socket and once again depress the Test button. The meter
should now read approximately 0.2 ohms on the 25A scale. Release the Test button.
D0010024.DOC (01/01/94) Page 31 INSTRUCTION MANUAL