Hitachi GR4000 Series, Руководство по установке

Страница: 85 / 222

GR4000 Installation Guide Version 1.00 - Preliminary
520-10-014-20X
67
(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 Power supply
unit Required number of
fuse-free breakers Required number
of outlets
Single 1 1
GR4000
-
80E1
15AT, single-phase
AC100V
（ for 15A circuit ）
Redundant 2 2
Single 1 2
GR4000 - 160E1
15AT, single-phase
AC100V
（
for 30A circuit
）
Redundant 2 4
Single 1 2 GR4000-320E (AC) 20AT, single-phase
AC200V
（ for 20A circuit ）
Redundant 2 4
*
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.
(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.)
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.
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 Current Time
GR4000 - 80E1
GR4000 - 160E1
50(A) 100ms
GR4000-320E (AC) 100 (A) 100ms
!
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.