UL/cUL approval
Compressor specification
I(1)
Max Fuse
(1)
I(2)
Max Fuse
(2)
Type
UL class
RK5 CSA
HRC form
II
UL class
RK5 CSA
HRC form II
A1
110kW
460
60
212
225
-
-
I: current in the supply lines at maximum load and nominal voltage
(1): compressor without integrated dryer
(2): compressor with integrated dryer
Fuse calculations for IEC
are done according to 60364-4-43 electrical installations of buildings, part 4:
protection for safety- section 43: protection against overcurrent. Fuse sizes are calculated in order to protect
the cable against short circuit.
Fuse calculations for cUL and UL
: The indicated fuse size is the maximum fuse size in order to protect
the motor against short circuit. For cUL fuse HRC form II, for UL fuse class RK5.
Possible configurations
There are 3 possible cabling layouts:
• (1): Single supply cables.
• (2): Parallel supply cables
• (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
2920 7101 41
87
Summary of Contents for CPC 40 G
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