Selector Switches - ABB SPAC 310 C User Manual And Technical Description

Selector switches

Function switch-
group SGF1
Additional functions required in various appli-
cations are selected with switchgroups SGF,
SGB and SGR indicated on the front panel. The
numbering of the switches, 1...8, and the switch
positions 0 and 1 are shown when the switch-
Switch Function
SGF1/1 Switches SGF1/1...3 are used for selecting the characteristic of the low-set overcurrent
SGF1/2 stage I>, i.e. definite time operation characteristic or inverse definite minimum time
SGF1/3 (IDMT) characteristic. At IDMT characteristic the switches are also used for selecting
the required current/time characteristic for the stage.
SGF1/1 SGF1/2 SGF1/3 Characteristic
0
1
0
1
0
1
0
1
SGF1/4 Circuit breaker failure protection (CBFP).
When SGF1/4 =1 the trip signal TS2 will start a timer which will generates a delayed
operate signal via TS1, if the fault has not been cleared before the operate time has
elapsed.
When switch SGF1/4 = 0 the circuit breaker failure protection is out of operation.
SGF1/5 Automatic doubling of the set start current of the high-set overcurrent stage I>> when
the protected object is energized.
When SGF1/5 = 0, no doubling of the start current setting of stage I>> is obtained.
When SGF1/5 = 1, the start current setting of stage I>> doubles automatically.
The doubling feature makes it possible to give the high-set stage a setting value below
the connection inrush current level.
SGF1/6 Switches SGF1/6...8 are used for selecting the operation characteristic of the low-set
SGF1/7 earth-fault stage I
SGF1/8 (IDMT) characteristic. At inverse definite minimum time characteristic the switches
are also used for selecting the current/time characteristic of the stage.
SGF1/6 SGF1/7 SGF1/8 Characteristic
0
1
0
1
0
1
0
1
On delivery from the factory all switches SGF1
are set at zero, i.e. the checksum for SGF1 is 0.
groups are set. Under normal service conditions
only the checksums are shown. Switchgroups
SGF2, SGR2 and SGR3 are found in the sub-
menus of the main menus of switchgroups SGF
and SGR.
0 0 Definite time
0 0 IDMT
1 0 IDMT
1 0 IDMT
0 1 IDMT
0 1 IDMT
1 1 IDMT
1 1 ---
>, i.e. definite time characteristic or inverse definite minimum time
0
0 0 Definite time
0 0 IDMT
1 0 IDMT
1 0 IDMT
0 1 IDMT
0 1 IDMT
1 1 IDMT
1 1 IDMT
Time or curve set
0.05...300 s
Extremely inverse
Very inverse
Normal inverse
Long-time inverse
RI-characteristic
RXIDG-characteristic
(Long-time inverse)
Time or curve
0.05...300 s
Extremely inverse
Very inverse
Normal inverse
Long-time inverse
RI-characteristic
RXIDG-characteristic
Not in use (long-time inverse)
9