Hanshin Machinery GRH 3 series, User Manual

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3. Electic Wiring
3-2 Power Facilities
1. Cable thickness
Since the compressor may not work properly depending
on the power facility capacity and the thickness/length
of the power cable and it may stop due to voltage
dropping of control circuit or defective acceleration of the
main motor, make sure to supply the power with the
voltage dropping set within 5% of the rated power.
For the cable thickness of the lead-in cable, refer to the
following table.
It is recommended that the cable length between a
transformer/distribution board and the compressor is 100m and
shorter; if longer than the length, the thickness may need reselecting.
2. Grounding Spec.
Grounding specifications are as follows.
3. Thickness of grounding cable
Cable thickness
(mm
2
)
AC220
AC440
15(18)
14
8
22(27)
22
14
37
60
38
Main motor cap.(kW)
4. Circuit breaker capacity
The main power supply essentially needs a circuit
breaker to avoid electric shock and protect the motor.
When selecting a breaker, refer to the following table.
The above capacity used to select a breaker is
available for Inverter and Y-D operating models.
Main motor
capacity(kW)
15
18
22
27
37
55
75
110
150
180
Supply power
spec.
AC220V
AC440V
AC220V
AC440V
AC220V
AC440V
AC220V
AC440V
AC220V
AC440V
AC220V
AC440V
AC220V
AC440V
AC220V
AC440V
AC220V
AC440V
AC220V
AC440V
Circuit breaker
cap.
ABS103-75
ABS53-50
ABS103-100
ABS53-50
ABS103-100
ABS103-60
ABS103-100
ABS103-75
ABS203-200
ABS103-100
ABS203-225
ABS203-150
ABS403-350
ABS203-200
ABS403-400
ABS403-250
ABS603-600
ABS403-350
ABS803-700
ABS403-400
55
100
60
75
125
60
110
200
150 150
250
200 180
325
250
Voltage
AC220V
AC440V
Grounding type
Type 3
Special type 3
Grounding resistance
100 and lower
10 and lower
Rated current
20A and lower
30A and lower
50A and lower
100A and lower
150A and lower
200A and lower
400A and lower
600A and lower
Cable thickness (mm
2
)
2.0 and thicker
2.0 and thicker
3.5 and thicker
5.5 and thicker
8.0 and thicker
14 and thicker
22 and thicker
38 and thicker
Make sure to install a circuit-breaker on the power.
Please ground the compressor to avoid any damages on the main motor or
electric shock accident.
Caution