Functions
6-116 7SJ62 Manual
C53000-G1140-C121-1
6.11.2.1 Overvoltage Protection
Overvoltage protection can be turned 21, 2)), or set to $ODUPRQO\
at address
)&7. When address is set to 21, tripping by the overvoltage element is al-
lowed.
Pickup Values There are not clear cut procedures on how to set the pickup value of the overvoltage
element. However, because the overvoltage function is primarily intended to prevent
insulation damage, the pickup of the overvoltage element should be set between
110 % and 115 % of nominal voltage. Depending on the type of voltage transformer
connection utilized, the pickup value may be entered at address 3,&.83
(used when voltage transformers are connected in a grounded-wye configuration) or
3,&.83 (used when voltage transformers are not connected in a ground-
ed-wye configuration). The time delay of the overvoltage element is entered at ad-
dress '(/$< and should be selected to allow the brief voltage spikes that
are generated during switching operations.
6.11.2.2 Settings for Overvoltage Protection
6.11.2.3 Information List for Overvoltage Protection
Addr. LCD-Text Setting Options Default Setting Comments VT Connection
Address 0213
Van,
Vbn,
Vcn
Vab,
Vbc,
VGnd
5001 FCT 59 OFF
ON
Alarm Only
OFF 59 Overvoltage protection X X
5002 59–1 PICKUP 40
~ 225 V 110 V 59-1 pickup voltage, VTs phase-gnd X
5003 59–1 PICKUP 40 ~ 130 V 110 V 59-1 pickup volt., VTs phase-phase X
5004 59–1 DELAY 0.00
~ 60.00 sec 0.50 sec 59-1 delay time X X
FNo. LCD-Text Explanation
6565 59 OFF 59-Overvoltage protection switched OFF
6566 59 BLOCKED 59-Overvoltage protection is BLOCKED
6567 59 ACTIVE 59-Overvoltage protection is ACTIVE
6568 59-1 picked up 59 picked up
6570 59-1 TRIP 59 TRIP
6513 >BLOCK 59-1 >BLOCK 59-1 overvoltage protection
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