Atlas Copco SF 17+ - Page 100

Compressor type I
tot
(1) Max
fuse (1)
Q21/Q2
2
SFD 22
+
IEC 60 Hz 380 V 27 A 32 A 14.5 A
SFD 22
+
IEC 50 Hz 400 V 25 A 25 A 12.8 A
SFD 22
+
UL/cUL 60 Hz 200 V 51 A 60 A 21.9 A
SFD 22
+
UL/cUL 60 Hz 230 V 44 A 50 A 19.0 A
SFD 22
+
UL/cUL 60 Hz 460 V 22 A 25 A 9.5 A
SFD 22
+
UL/cUL 60 Hz 575 V 18 A 20 A 7.6 A
I
tot
(1): maximum current in the supply lines at maximum load and nominal voltage for
compressors without integrated dryer.
Max fuse (1): maximum fuse size in case of compressors without integrated dryer.
I
tot
(2): maximum current in the supply lines at maximum load and nominal voltage for
compressors with integrated dryer.
Max fuse (2): maximum fuse size in case of compressors with integrated dryer.
IEC fuses: class gL/gG
UL fuses: class K5; CSA: HRC form II
Possible configurations
There are 3 possible cabling layouts:
• (1): Single supply cables (for DOL variants, only K21 is used)
•
(2): Parallel supply cables (for DOL variants, only K21 is used)
• (3) is only valid for Y-D versions
Cable sizing according IEC
The tables below indicate the current carrying capacities of cables for 3 commonly used
installation methods, calculated according to standard 60364-5-52 - electrical installations of
buildings part 5 - selection and erection equipment and section 52 - current carrying capacities in
wiring systems.
The allowed currents are valid for PVC insulated cables with three loaded copper conductors
(maximum conductor temperature 70 °C).
Instruction book
98 2920 7140 52