Woodward
Manual XRI1-ER
28
TD_XRI1-ER_12.03, Rev. C
7. Relay testing and commissioning
The test instructions following below help to verify the protection relay performance before or during commis-
sioning of the protection system. To avoid a relay damage and to ensure a correct relay operation, be sure that:
the auxiliary power supply rating corresponds to the auxiliary voltage on site.
the rated current and rated voltage of the relay correspond to the plant data on site.
the current transformer circuits and voltage transformer circuits are connected to the relay
correctly.
all signal circuits and output relay circuits are connected correctly.
7.1 Power-On
NOTE!
Prior to switch on the auxiliary power supply, be sure that the auxiliary supply voltage corresponds to the rated
data on the type plate.
Switch on the auxiliary power supply to the relay and check that the message "WW" appears on the display and
the self supervision alarm relay (watchdog) is energized (Contact terminals 71 and 74 closed).
7.2 Testing the output relays and LEDs
NOTE!
Prior to commencing this test, interrupt the trip circuit to the circuit breaker if tripping is not desired.
By pressing the push button <TRIP> once, the display shows the first part of the software version of the relay
(e.g. „D08-“). By pressing the push button <TRIP> twice, the display shows the second part of the software ver-
sion of the relay (e.g. „4.01“). The software version should be quoted in all correspondence. Pressing the
<TRIP> button once more, the display shows "PSW?". Please enter the correct password to proceed with the
test. The message "TRI?" will follow. Confirm this message by pressing the push button <TRIP> again. All out-
put relays should then be activated and the self supervision alarm relay (watchdog) be deactivated one after
another with a time interval of 3 seconds and all LEDs with a delay of 0.5 seconds, with the self-supervision re-
lay dropping. Thereafter, reset all output relays back to their normal positions by pressing the push button
<SELECT/RESET> (about 3 s).
7.3 Checking the set values
By repeatedly pressing the push button <SELECT>, all relay set values may be checked. Set value modification
can be done with the push buttons <+><-> and <ENTER>. For detailed information about that, please refer to
chapter 6.
For a correct relay operation, be sure that the frequency set value (f=50/60) has been selected according to
your system frequency (50 or 60 Hz).
