Hitachi NEXT Series Instruction Manual page 50

7. WIRING [Connecting a Power Cable]
⑤ Disconnect the power and verify that it is safe before
1.) Overhauling the DSP , 2.) Filling oil the DSP and/or
3.) Servicing the starter/control box.
⑥ Field wiring connections must be made by UL and
CSA certificated ring lug terminal connectors sized
for the wire gauge being used. The connector must
be fixed using the crimping tool specified by the con-
nector manufacturer.
⑦ Use the attached rubber bushes (on the power cable
holes) and the protective tube to protect the power
cable (see illustration below).
If the customer utilize bushings by their own, follow
UL requirements. Type 1 device is the minimum level
of replacement for the provided rubber bushings.
⑧ Customer should follow UL requirement; See refer-
ences below:
a) The branch circuit protection shall be
460V500A (132kW model), 460V500A (145kW model)
460V600A (160kW model), 460V800A (200kW model)
460V800A (240kW model)
maximum UL listed dual element time delay branch
circuit type fuses.
b) Rubber bushings can only be replaced with a mini-
mum of type 1 device.
CAUTION
An unprotected power cable can cause direct
contact with the steel plates e. g. the power
cable holes is resonated with a slight vibra-
tion, it could damage the cover over time and
result in a short circuit accident.
● Install an earth leakage circuit breaker between the air compressor and the power supply. Do not use
a mere disconnector such as a knife switch in wiring because it cannot protect the air compressor
and may result in a burning of the air end if a ground fault has occurred.
● Ground the air compressor; otherwise you may receive an electric shock, or the air compressor may
fail. As a ground, do not use a steel skeleton of the building because it may cause an operational fail-
ure. Ground independently and directly into the earth.
48
Remove the starter/control box covers and connect a
power cable as illustrated below.
Starter /
Control Box
CAUTION
Power Supply
Wiring