Hitachi SJ100 - Manual (Page 58)

Step-by-Step Basic Installation
In
v
e
rt
er Mounting
and Installation
2–14
Determining Wire and Fuse Sizes
The maximum motor currents in your application determines the recommended wire
size. The following table gives the wire size in AWG. The “Power Lines” column
applies to the inverter input power, output wires to the motor, the earth ground connec-
tion, and any other component shown in the
“Basic System Description” on page 2–5 .
The “Signal Lines” column applies to any wire connecting to the two green 8-position
connectors just inside the front panel half-door.
Note 1: Field wiring must be made by a UL-listed and CSA-certified closed-loop
terminal connector sized for the wire gauge involved. Connector must be
fixed by using the crimping tool specified by the connector manufacturer.
Note 2: Be sure to consider the capacity of the circuit breaker to be used.
Note 3: Be sure to use a larger wire gauge if power line length exceeds 66 ft. (20m).
Note 4: Use 18 AWG / 0.75 mm
2
wire for the alarm signal wire ([AL0], [AL1], [AL2]
terminals).
Motor Output
(kW/HP)
Inverter Model
Wiring
Applicable
equipment
kW HP Power Lines Signal Lines
Fuse (UL-rated,
class J, 600V)
0.2 1/4 SJ100-002NFE/NFU
AWG16 / 1.3 mm 2
18 to 28 AWG /
0.14 to 0.75 mm 2
shielded wire
(see Note 4)
10A (single ph.)
7A (three ph.)
0.4 1/2 SJ100-004NFE/NFU
0.55 3/4 SJ100-005NFE
0.75 1 SJ100-007NFE/NFU
AWG14 / 2.1 mm 2
15A (single ph.)
10A (three ph.)
1.1 1 1/2 SJ100-011NFE
1.5 2 SJ100-015NFE/NFU AWG12 / 3.3 mm 2 20A (single ph.)
15A (three ph.)
2.2 3 SJ100-022NFE/NFU AWG10 / 5.3 mm 2 30A (single ph.)
20A (three ph.)
3.7 5 SJ100-037LFU AWG12 / 3.3 mm 2 30A
5.5 7 1/2 SJ100-055LFU AWG10 / 5.3 mm 2 40A
7.5 10 SJ100-075LFU AWG8 / 8.4 mm 2 50A
0.4 1/2 SJ100-004HFE/HFU
AWG16 / 1.3 mm 2
3A
0.75 1 SJ100-007HFE/HFU 6A
1.5 2 SJ100-015HFE/HFU
10A
2.2 3 SJ100-022HFE/HFU
3.0 4 SJ100-030HFE
AWG14 / 2.1 mm 2 15A
4.0 5 SJ100-040HFE/HFU
5.5 7 1/2 SJ100-055HFE/HFU
AWG12 / 3.3 mm 2
20A
7.5 10 SJ100-075HFE/HFU 25A