Hitachi GR4000 Series Installation Manual page 85

(2) Distribution Panel
Attach the circuit breakers such as a fuse-free breaker (FFB) to the branch circuit
which supplies the electricity to the GR4000. See Table 2.4-3 regarding the ratings of
fuse-free breakers (FFB) or required number of fuse-free breakers/outlets.
Table 2.4-3 Rated current of a circuit breaker
Model Fuse-free breaker
15AT, single-phase
GR4000-80E1
AC100V（for 15A circuit）
15AT, single-phase
GR4000-160E1
AC100V（for 30A circuit）
GR4000-320E (AC) 20AT, single-phase
AC200V（for 20A circuit）
*
*
(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 Table 2.4-1 in the section (2) Distribution Panel.)
*
Also, an inrush of electrical current (See Table 2.4-4) occurs after the device is powered
up. Be prepared well so that the voltage of a power supply facility is not decreased due
to the inrush of electrical current.
Table 2.4-4 Inrush current
Model
GR4000-80E1
GR4000-160E1
GR4000-320E (AC)
!
*
520-10-014-20X
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.
Caution: Once the device is powered up, an inrush of electrical current occurs. Do not
operate this device during a reduced voltage condition (brownout). Similarly, do
not allow the voltage of a power facility under your control to decrease. A
brownout condition also affects the other equipment besides the GR4000 if
connected to the same power facility.
NOTE: The values related to inrush current you see in the table above are for the cases
of using single power supply unit.
GR4000 Installation Guide Version 1.00 - Preliminary
Power supply Required number of
unit fuse-free breakers
Single 1
Redundant 2
Single 1
Redundant 2
Single 1
Redundant 2
Current
50(A)
100 (A)
Required number
of outlets
1
2
2
4
2
4
Time
100ms
100ms
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