ABB SPAC 536 C User Manual page 103

Programming
switches
Functional switch-
group SGF1
Additional functions required by individual
applications are selected by means of the switch-
groups SGF, SGB and SGR indicated on the
front panel. The numbering of the switches,
1...8, and the switch positions 0 and 1 are indi-
Switch Function
SGF1/1 Switches SGF1/1...3 are used for selecting the operation characteristic of the low-
SGF1/2 set overcurrent stage I>, i.e. definite time mode of operation or inverse definite
SGF1/3 minimum time (I.D.M.T.) mode of operation. At inverse definite minimum time
mode of operation the switches are, further, used for selecting the current/time
characteristic of the module.
SGF1/1 SGF1/2 SGF1/3 Mode of operation
0
1
0
1
0
1
0
1
SGF1/4 Selection of the circuit breaker failure protection.
When SGF1/4 =1 the trip signal TS2 will start a timer which will produce a 0.1...1 s
delayed trip signal via TS1, if the fault has not been cleared before.
With switch SGF1/4 = 0 only the normal trip signal TS2 is activated.
SGF1/5 Selection of automatic doubling of the setting value of the high-set overcurrent
stage when the protected object is energized.
When SGF1/5 = 0, no doubling of the setting value I>> is obtained.
When SGF1/5 = 1, the setting value of the I>> stage doubles automatically.
This makes it possible to give the high-set current stage a setting value below the
connection inrush current level.
SGF1/6 High-set stage of the earth-fault protection inhibited by starting of the low-set
stage of the overcurrent unit
When SGF1/6 = 0, the operation of the high-set earth-fault protection is operating
under all phase current conditions
When SGF1/6 =1, the earth-fault protection is inhibited if the low-set stage of the
overcurrent unit has started
SGF1/7 Reserved for future use
SGF1/8 Reserved for future use
cated when setting the switchgroups. In nor-
mal service only the checksums are shown. The
switchgroups SGF2, SGR2 and SGR3 are found
in the submenus of the switchgroups SGF and
SGR.
0 0 Definite time
0 0 I.D.M.T
1 0 "
1 0 "
0 1 "
0 1 "
1 1 "
1 1 "
Characteristics
0.05...300 s
Extremely inverse
Very inverse
Normal inverse
Long-time inverse
RI-characteristic
RXIDG-characteristic
Not in use
(long-time inverse)
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