30
m
in
1200 min
1200/1300
26
00
m
in
60
0
m
in
20
00
200 min
(1)
20
00
200 min
(2)
1200/1300
1200 min
40
0
m
in
24
00
m
in
30
m
in
U N I S EC
I N S TA L L AT I O N M A N UA L
18
Room layout for unit with withdrawable
circuit-breaker (LSC2B)
IAC A-FLR 25 kA gas exhaust duct
IAC A-FL 12.5 kA filters
(1) For special conditions defined by ABB, the inimum distance can be up to 130 mm
(2) In the case of special conditions, contact ABB for the minimum distances required
Figure 33. Minimum distances from the walls of the installation room,
solution IAC A-FLR 25 kA, 1s @ 12-17.5 and 21 kA, 1s @ 24 kV
with gas exhaust ducts
Figure 34. Minimum distances from walls of installation room,
solution IAC A-FL 12.5 kA 1s with filters installed
on each individual unit
—
3. Assembly of the switchgear on site
