GS4000 Installation Guide Revision 4.00
520-10-026-30X
2-15
(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 GS4000. Building installation must include 60 A Listed
fuse which is suitable for branch circuit protection at a line conductor. There shall be no fuse
in ground or neutral conductor. All protective devices must be located together. (The protector
from over-charged current should be put into only a line (-48/-60 VDC), and it should not be
put into 0V or a ground. Also, it should be prescribed that the protection at a facility is done
not by a circuit breaker but by putting a fuse into a line only.)
See Table 2.4-4 regarding the ratings of a fuse or required number of fuses/outlets.
Table 2.4-6 Rated Current of a Fuse
Model
Rated Current of
Circuit Breaker
Power Supply
Required Number of
Circuit Breakers
Single 1
GS4000-80E2
Redundant (NOTE1)
2
Single 1
GS4000-160E2
Redundant (NOTE1)
2
Single 2
GS4000-320E (DC)
60 A
Redundant (NOTE1)
4
Note 1 : It is possible to have a dual power supply system by feeding a power supply module from two different power
sources.
*
NOTE: In order to ease your operation with GS4000, set a distribution panel in the
same/neighbor room where GS4000 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 (2) Distribution Panel, above.)
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 2.4-7) 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. Careful studies are necessary for the use of UPS or CVCF.
Table 2.4-7 Inrush Current
Model
Current
Time
GS4000-80E2 40(A)
GS4000-160E2 80(A)
GS4000-320E (DC)
80(A)
40ms