Electrical Wiring Connection - Hitachi CH-UNIT Installation And Operation Manual

ELECTRICAL WIRING

6.2 ELECTRICAL WIRING CONNECTION

The electrical wiring connection for the CH unit is shown in next figure.
1. Turn OFF the main power switch and take off the electrical box cover of CH unit.
2. Connect the power supply and earth wires to the terminals in the electrical box.
3. Connect the wires of the operating line to the terminals in the electrical box.
4. Tightly clamp the wires using the cord clamp inside the electrical box.
5. Fix the electrical box cover after wiring work.
Terminal Board for Operating Line
Cord Clamp
Operating Line Connection
Field minimum Wire Sizes
¡
1. Perform the electrical wiring work for the CH units. Determine the cable size according to the table below.
2. Pay attention to the marks on the terminal board when connecting wires for CH unit and I.U./O.U. Refer to
"Example of Electrical Wiring" for the wiring connection on the next page.
model Power Source
CH-6.0N1
1~ 220-240V/1Ø/50Hz
CH-10.0N1

NOTE:
- Follow local codes and regulations when selecting field wires.
- The wire sizes marked with
Standard, EN60 335-1. Use the wires which are not lighter than the ordinary tough rubber sheathed flexible cord (code
designation H05RN-F) or ordinary polychloroprene sheathed flexible cord (code designation H05RN-F).
- The wire sizes marked with
(Flame Retardant Polyflex Wire) manufactured by Hitachi Cable Ltd., Japan.
- Use a shielded cable for the transmitting circuit and connect it to ground.
- In the case that power cables are connected in series, add each unit maximum current and select wires below.
Selection According to EN60 335-1
Current i (A)
i ≤ 6
6 < i ≤ 10
10 < i ≤ 16
16 < i ≤ 25
25 < i ≤ 32
32 < i ≤ 40
40 < i ≤ 63
63 < i
: In the case that current exceeds 63A, do not connect cables in series.
CN CN CN CN
4 3 2 1
PCB1
TB2
Earth Wire
Power Source Cable Size
maximum
Current
EN60 335-1 
1A 0.75mm
in the above table are selected at the maximum current of the unit according to the European

in the above table are selected at the maximum current of the unit according to the wire, MLFC

Wire Size (mm )
2
0.75
1
1.5
2.5
4
6
10

Terminal Board for Power Supply
TB1
L1 L2
Cord Clamp
N
PCN
1
Power Supply Line Connection
Transmitting Cable Size
mLFC  EN60 335-1 
0.5mm 0.75mm
2 2
Selection According to mLFC (at cable temperature of 60º)
Current i (A)
i ≤ 15
15 < i ≤ 19
19 < i ≤ 24
24 < i ≤ 34
34 < i ≤ 47
47 < i ≤ 63
63 < i ≤ 78
78 < i ≤ 113
113 < i ≤ 148
148 < i ≤ 179
PMML0204 rev.0-05/2010
Earth
Wire Size
mLFC 
0.5mm 2.0mm
2 2 2
Wire Size (mm )
2
0.5
0.75
1.25
2
3.5
5.5
8
14
22
30
21