Seaward Supernova XE User Manual
Page 73
Temperature monitoring
63
These messages mean that the appliance under test is switched off
or the fuse may be open circuit, or it maybe possible that the
appliance under test will draw more than 18A and could damage the
Supernova XE. User discretion is required. If in doubt do not test
and seek advice.
Temperature monitoring
The tester is provided with internal temperature monitors to ensure
sensitive components are not overheated. High rates of testing may
cause this situation, especially with long Earth Bond tests. Setting
Earth Bond test times to 2 secs will increase operating time. If the
following message appears, leave the tester to cool down before
pressing Enter to continue testing.
WARNING
THE TEST HAS BEEN ABORTED BECAUSE THE APPLIANCE
TESTER BECAME TOO HOT. ALLOW THE UNIT TO COOL
BEFORE STARTING PRESS ENTER BUTTON TO CONTINUE
Multiple Earth connections:
In general, multiple earth connections to an EUT (e.g. water pipe
connections to a water heater) can cause difficulties in measurement.
This has previously needed the additional earth connections to be
isolated.
The Supernova XE tester is capable of testing earth connections in
the presence of additional earth paths. This is done automatically by
performing a point to point measurement of the earth connection, and
measurement of the differential leakage current, rather than the earth
lead current. Measurements are thus assured without special
precautions.