INSTALLATION OF UNIT
17
ENGLISH
Power Supply and Wiring
The unit is completely wired internally at the
factory according to general rule of electrical
technology, but local rules, if they are re-
quired, should be complied with.
1
Power supply
Power source must fulfill the following
conditions:
- The working voltage should be higher
than 90 % and lower than 110 % of the
rated voltage marked on the name plate.
- The starting voltage should be higher than
85 % of the rated voltage marked on the
name plate.
- The screws which fasten the wiring in the
casing of electrical fittings are liable to
come loose from vibrations to which the
unit is subjected during the course of
transportation. Check them and make
sure that they are all tightly fastened.
(If they are loose, it could give rise to
burn-out of the wires.)
- See to it that the starting voltage is main-
tained at more than 90 percent of the
rated voltage marked on the name plate.
- The following troubles would be caused
by voltage drop-down.
Vibration of a magnetic switch, damage
on the contact point there of, fuse break-
ing, disturbance to the normal function of
a overload protection device.
2
Wiring
After the confirmation of the above condi-
tions, prepare the wiring as follows:
- Use the power supply cord(Rubber insula-
tion, type Ho7RNF approved by HAR or
SAA) suitable for the product's electriccal
capacity.
Voltage
Time
Starting point
Power source voltage
working voltage
Starting voltage
UNIT
VOLTS
Conductor
cross-sectional area
48 k
H/P 450/750 V
2.5 mm
2
C/O 450/750 V
2.5 mm
2
- Provide a recognized circuit breaker as
below between power source and unit.
A disconnection device to adequately dis-
connect all supply lines must be fitted.
(for service operations)
UNIT
Circuit breaker
capacity
48 k
H/P
20 A
C/O
20 A
Summary of Contents for APUC488TLA0
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