Grounding Conditions; Power Conditions; Table 1.1 I/O Voltage Of Power Supply Board - Samsung OfficeServ 7400 Installation Manual

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1.2 Grounding Conditions

The following cautions should be taken when grounding the OfficeServ 7400 system:
The grounding wire of the OfficeServ 7400 system should be grounded to the earth
using a proper material.
The flow of electric current between the grounding wire of the power plug and the
exposed metal surface of the system should be satisfactory.
When connecting grounding of external additional equipments to the grounding of the
system, the groundings should be connected through a single connection point.
Cautions for Grounding
- Do not connect the grounding wire of the OfficeServ 7400 system to a power
conduit of a building.
- The standards for power and grounding should comply with the country standard
and the pertinent work should be conducted according to the country standard.
- External grounding is required to prevent human injuries or system damages
caused by lightning, static electricity, or voltage surge.
- Unplug the AC power code before connecting the ground line. Failure to do so
may cause bodily damage.
- OfficeServ 7400 System should be connected to an wall outlet with a protective
ground.
- The GND in the back of the OfficeServ 7400 system should be grounded.

1.3 Power Conditions

The power supply board of the OfficeServ 7400 system receives AC input power or battery
power, and supplies -54 V, -5 V, +5 V, +3.3 V, +12 V, and -56 V to the system cabinet.
The power condition is as follows:
AC 100~240 V, 3 A, 50/60 Hz, or DC 48 V, 10 A
Power Supply Unit
(PSU)
External Rectifier
(Model: OfficeServ 7150)
1-2

Table 1.1 I/O voltage of Power Supply Board

Power Supply
Input Power
Input Power
Input Power
Output Power
Specification
AC 110V, 220V(Free Voltage)
- DC -54 V, 6.6 A
- DC +5 V, 16 A
- DC -5.3 V, 2 A
- DC +3.3 V, 30 A
- DC +12 V, 1 A
- DC -56 V, 0.4 A(for Backup)
AC 110V, 220V(Free Voltage)
DC -54 V, 10 A
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