Manual WIP1 GB
Woodward
DOK-TD-WIP1 Rev.F
50
7.3 Primary injection test
Generally, a primary injection test could be carried out in the similar manner as the secondary injection test
described above. Since the cost and potential hazards are very high for such a test, primary injection tests
are usually limited to very important protective relays in the power system.
Because of its powerful combined indicating and measuring functions, the WIP1 relay may be tested in the
manner of a primary injection test without extra expenditure and time consumption.
In actual service, for example, the measured current values on the WIP1 relay display may be compared
phase by phase with the current indications of the ammeter of the switchboard to verify that the relay works
and measures correctly.
