Toshiba GR200 Series Instruction Manual page 356

Outline
2.24.1
Table 2.24-2 summarizes the reclosing operations and the modes in the ARC function. The
ARC function can operate for both a single CB arrangement and double CBs (1.5CB)
arrangement; hence, the ARC function is grouped into two logics: ARC1 for CB#1 and ARC2
for CB#2. Note that multi-shots scheme is only available for 1CB arrangement (CB#1). The
'ORIGINAL' is provided for the user's programing.
Table 2.24-2 ARC operation modes and shot numbers
Shot number
ARC1 SHOT1
or/and
ARC2 SHOT
ARC1 SHOT2
ARC1 SHOT3
ARC1 SHOT4
ARC1 SHOT5
Operation is applicable
x:
Breaker system
(i)
The ARC function can operate in several breaker systems, as shown in Figure 2.24-1. For the
1.5CB arrangement, the ARC1 and ARC2 logics operate separately; the user can select
different reclosing scheme (Figure 2.24-1.b).
CB#1
Relay
(G)
Bus VT
VCHK1 (G)
ARC1 (G)
Busbar G
[ARC1-MODE]= FT / SPAR / TPAR / SPAR&TPAR
[ARC2-MODE]= Off
a.1CB arrangement system (CB#1)
Reclosing
mode
ARC1
SPAR
TPAR
SPAR&TPAR
ORIGINAL
Line
Line VT
Reclosing CB#1
Figure 2.24-1 Breaker systems
- 335 -
1CB or 1.5CB arrangement
1CB
ARC2
(N.A)
X
(N.A)
X
(N.A)
X
(N.A)
X
(N.A)
X
(N.A)
X
(N.A)
X
X (N.A)
N.A: Operation is not applicable
Bus VT
CB#1
VCHK1
Line VT
VCHK2
CB#2
Line VT
[ARC1-MODE]= FT / SPAR / TPAR / SPAR&TPAR
[ARC2-MODE]= FT / SPAR / TPAR / SPAR&TPAR
b. 1.5 CB arrangement (CB#1 and CB#2)
6F2S1915 (0.46)
1.5CB
ARC1&2
x
x
x
x
(N.A)
(N.A)
(N.A)
(N.A)
Busbar G
Reclosing for CB#1
(G)
ARC1
(G)
(G)
ARC2 (G)
Line1
Reclosing for CB#2
Line2
GRZ200 (Soft 031 & 032)