Hitachi KPI Installation And Operation Manual page 26

13.7. ELECTRICAL WIRING CONNECTION
The electrical wiring connection for the unit is shown below:
1. Cut out the centre of the rubber bushing in the wiring connection
hole, as shown in next figure
Cut inside
2. Connect the cable of an optional remote control switch or an optional
extension cable to the connectors on the printed circuit board inside
the electrical box through the connecting hole in the cabinet.
3. Connect the power supply and earth wires to the terminals in the
electrical box.
4. Tightly clamp the wires using the cord clamp inside the electrical box.
5. Seal the wiring connection hole after running the cables with the seal
material to protect the unit from condense water or insects.
6. In the case that the power cables are connected in series,check the
amount of current is less than 50 A.
Select the main switches in according to the next table:
Power
Model
source
KPI-252E2E
KPI-502(E/H)2E
KPI-802(E/H)2E
KPI-1002(E/H)2E 1~, 230V 50 Hz
KPI-1502(E/H)2E
KPI-2002(E/H)2E
KPI-3002H2E
ELB: Earth switch; CB: Switch
Field Minimum Wire Sizes for Power Source
¡
Ensure that the field-supplied electrical components (mains power
switches, circuit breakers, wires, connectors and wire terminals) have
been properly selected according to the electrical data indicated.
Make sure that they comply with national and regional electrical codes.
Model Power source
KPI-252E2E
KPI-502(E/H)2E
KPI-802(E/H)2E
KPI-1002(E/H)2E 1~, 230V 50 Hz
KPI-1502(E/H)2E
KPI-2002(E/H)2E
KPI-3002H2E
26
PMML0185 rev.1 - 03/2010
Rubber Bushing
Maximum
CB ELB
current
(A) (nº poles/A/mA)
(A)
4 6
4 6
4 6
8 10 2/40/30
8 16
8 16
12 16
Power Source
Maximum
Cable Size
current
(A)
EN60 335-1 (*1)
4 1
4 1
4 1
8 1.5
8 2.5
8 2.5
12 2.5

NOTE:
The above wire sizes marked with (*1) are selected at the
−
maximum current of the unit according to the European Standard,
EN60 335-1.
Use a shielded cable and connect it to ground.
−
In the case that power cables are connected in series, add each
−
unit maximum current and select wires below.
Follow local codes and regulations when selecting field wires,
−
Circuit breakers and Earth Leakage breakers
Use the wires which are not lighter than the ordinary
−
polychloroprene sheathed flexible cord (code designation H05RN-F)
Selection according to EN60 335-1
Current I (A) Wire Size (mm
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 63 A, do not connect cables in series.
Earth Leakage
Breaker
Main Switch
1N
230V / 50Hz
(*) Field supplied
INSTALLATION
)
2
0.75
1
1.5
2.5
4
6
10
(2*)