62
SVERKER 750/760
Programma Electric AB
ZP-CD01E R05A
7. Repeat the U > ON + TIME DELAY run two or
three times to confirm its accuracy through
repetition.
8. Decrease the current to 0.
Finishing the test
1. Enter the values read from the display into
the test report.
2. Turn off power to Sverker using the mains
switch.
3. Disconnect the equipment.
7.5 Testing under-
voltage relays
The following functions are to be tested:
• Pick-up function: U < ON
• Drop-out function : U < OFF
• Operating time: U < ON + TIME DELAY
Test hookup and initial settings
1. Connect for testing as shown in the above
diagram.
a. Connect the 0-250 V AC voltage source
output to the protective relay equipment.
b. Also connect this output to the voltmeter
input.
c. Connect the timer stop input (STOP) to
the relay trip/signal output.
2. Turn on power to Sverker using the mains
switch.
3. Activate the desired stop condition for the
timer by setting the stop input for a make
and/or break function and for a wet or dry
contact.
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