Voltech AT360, Руководство пользователя

Страница: 377 / 470

V
OLTECH
AT
I
U
SER
M
ANUAL
P
AGE
7-79
terminal can be ‘Low’. This is to allow testing, for example, of the complete
primary to secondary insulation resistance of a transformer by taking all
primary terminals ‘High’ and all secondary terminals ‘Low’.
Note that the Editor’s ‘Measure’ button CANNOT be used to determine the test
voltage.
Choosing Test Limits
Although the tester is capable of measuring insulation resistance values
greater than 1G
Ω
, there is no need to specify so high a value to check that
windings are isolated.
In many cases, specifying a lower value will speed up the execution of the test.
A value of 100M
Ω
is generally suitable for most applications.
Where higher voltage safety testing is required, see the Hi-Pot tests that are
available with the Voltech AT3600.
If the "User Offset Enabled" check box is checked, a value can be entered into
the edit box. The value entered is then added to any results returned from the
AT tester.