1MRS750886-MUM
65
REU 513
User’s Guide
ABB Substation Automation
Products and Systems
compared with the operate times obtained from the voltage/time curve. Before the
test, make sure that the switch SGF2/4=1 to block the stage U< when S1 is switched
off.
•
Set the test voltage at one of the two defined test voltages.
•
Switch off S1 and clear indicators and reset output relays. The clock is startet by
closing switch S1 and stopped by closing output contact PO1.
2.3.2.
High-set stage U<<
The stage U<< should be configured for conventional operation by setting the switch
SGF2/2=0.
Starting
•
Set the test voltage value at a value slightly above the set start value of stage
U<<.
•
Close switch S1 and clear indicators and reset output relays.
•
Slowly lower the voltage until the relay starts and the indicator L2 is lit. Then
read the start voltage value from the voltmeter.
Operate time
Test according to selected characteristics.
Definite-time characteristic
•
Set the test voltage at 1.1 x the set start voltage of stage U<<. The clock is
started by opening switch S1 and stopped by closing output contact PO2.
•
When the relay starts, the START indicator is lit with yellow light. When the
relay operates, the TRIP indicator is lit with red light.
Inverse-time characteristic
At inverse-time characteristic, the operate time is measured at two different test
voltage values (0.9 x U<< and 0.6 x U<<). The operate times thus obtained are
compared with the operate times obtained from the voltage/time curve. Before the
test, make sure that the switch SGF2/5=1 to block the stage U<< when S1 is
switched off.
•
Set the test voltage at one of the defined test voltages.
•
Switch off S1 and clear indicators and reset output relays. The clock is started
by closing switch S1 and stopped by closing output contact PO2.
2.4.
Testing of the self-supervision system (IRF)
The self-supervision system and the function of the IRF LED and the IRF output can
be tested by changing the value of parameter V165 from 0 to 1.
2.5.
Testing of the binary input
The binary input is tested by closing and opening switch S2. Check the value via the
the SPA parameter I4. The value should be 1 when the switch is closed and 0 when
the switch is open.