Hitachi GR4000 Series Installation Manual page 88

GR4000 Installation Guide Version 1.00 - Preliminary
(2) Distribution Panel
Attach the circuit breakers such as a fuse-free breaker (FFB) or a fuse to the branch
circuit which supplies the electricity to the GR4000. See Table 2.4-4 regarding the
ratings of fuse-free breakers (FFB) or required number of fuse-free breakers/outlets.
Table 2.4-4
Model
GR4000-0E2
GR4000-60E2
GR4000-20E (DC)
*
*
(3) Considerations when powering a distribution panel
The current capacity of a distribution panel must be greater than that of the operating
current fed to the circuit breaker. (See (2) Distribution Panel.)
*
70
Rated current of a circuit breaker
Rated current of a
circuit breaker
60 A
NOTE: The total electric charge for a branch circuit should be set at 80 –90 % or less of
the rated current
NOTE: In order to ease your operation with GR4000, set a distribution panel in the
same/neighbor room where GR4000 is installed.
WARNING: THE CURRENT CAPACITY OF A DISTRIBUTION PANEL MUST BE GREATER
THAN THAT OF THE OPERATING CURRENT FED TO THE CIRCUIT BREAKER.
IF NOT, THE CIRCUIT BREAKER MAY NOT WORK PROPERLY WHEN A
CIRCUIT ABNORMALITY IS DETECTED. THIS CONDITION COULD CAUSE A
FIRE.
NOTE: In general, the operating current fed to a circuit breaker is set to be greater than
the rated current. Check the specification of your circuit breaker before using it.
Power supply unit
Single
Redundant
Single
Redundant
Single
Redundant
Required number of fuse-free
breakers
1
2
1
2
2
4
520-10-014-20X