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www.kewtechcorp.com
ENVIRONMENTAL
enVIronMenTal
Operating ................................................. 0ºC to 40ºC (non condensing)
Storage .................................................. -10ºC to 50ºC (non condensing)
Maximum R.H .................................................................................. 90%
Supply Rating .................................................................. 230V 50/60Hz
Max Output Current ......................................................................... 16A
Fuses (Internal) ........................................................not user replaceable
Maximum Barometric Elevation for making Measurements ..............2000m
IP Rating .........................................................................................IP40
EARTH BOND TEST
appendix a purpose of Tests
earth bond Test
This test is to ensure that the connection between the earth pin in the mains
plug of the appliance and the metal casing of the appliance is satisfactory
and of sufficiently low resistance.
A selectable test current is applied between the earth pin of the mains supply
plug and the earth bond test lead clip.
A high current is normally used to stress the connection under fault
conditions. The length of the test should be limited to prevent damage due
to overheating.
earth screen Test
This test is to check the earth screen connection using a current which will
prevent damage that may be caused by testing using high currents. This
is often required by sensitive electronics such as computers and other
Information Technology (IT) equipment.
A low voltage of approximately 100mV AC RMS is applied between the earth
pin of the mains supply plug and the Earth Bond test lead clip. A current of
100mA is allowed to flow for the duration of the test.
Insulation Test
Warning
500 V / 250V d.c. test voltage
This test is used to verify that adequate insulation exists between the mains
supply pins and earth.
During the insulation test, a 500V DC voltage is applied between the earth
pin and both the live and neutral pins of the appliance mains supply plug.
The Tester displays the resistance measured and allows the user to confirm
sufficient insulation exists.
