Caution – Hitachi J300U Series User Manual

Page 24

5-4

NOTE 3: Be sure that the specified grounding is carried out. Be sure to separate the unit’s

grounding pole from those of other heavy electric machinery, and avoid using
common grounding poles.

If multiple inverters are used, make sure that the grounding connections do not
create a loop.

Improper grounding

Proper grounding

Grounding bolt
(at the site)

Inverter

CAUTION

External or remote over load protection required, if multiple motors to be connected.

For models J300-450LFU and -550LFU only , connect to branch circuit protected at

maximum 300% of output current rating.

Suitable for use on a circuit capable of delivering not more than 10,000 rms

symmetrical amperes,*** volts maximum,

(where *** = input voltage)