3.1.
Power Supply
Inrush current on connecting the equipment to the main AC power supply may be significant.
Each PDU is equipped with a switch-mode power supply that absorbs non-sinusoidal
currents.
To ensure that interferences or faults generated by other systems and devices do not affect
device operation, the PDU/UPS must be powered through an AC protection.
Electric and data cables must be laid in bulk on the primary slab, in the raised floor plenum.
If cableways are required, electricity distribution cables must be separated from data
transmission cables (separation of high and low currents) by at least 30 cm.
mportant Lightning flashes to, or nearby, structures (or services connected to the
structures) are hazardous to people, to the structures themselves, their
contents and installations as well as to services. The application of
lightning protection measures at AC power supply level, in compliance
with the Lightning Protection Standards NF C15-100 and IEC 62305 in
force is essential.
Prerequisites
Provision of the power supply interface and the corresponding electrical installation in
compliance with specifications
Provision and installation of the electric power supply panel (and required protections)
Provision of power supply cables from the electricity distribution panel up to the hardware
connection point
Provision of grounded plug sockets for the connection of the system to the power supply
Provision and installation of an emergency shutdown system (lock system) and of a power
supply cut-off device at general Data Processing Center circuit breaker level
Power factor requirement: > 90%
WARNING
The installation of an “on-line” Uninterruptible Power Supply (UPS) is strongly recommended
to ensure continuity of service and to protect the system in the event of a mains failure.
The UPS may be installed in the rack, in the Computer Room or in an ancillary room.
DANGER
• To ensure the protection of personnel and equipment, bipolar magneto-thermic circuit
breakers must be installed on the phase and neutral wires, in compliance with the safety
standards in force.
• Power must be exclusively conveyed by copper conductors from the source. Aluminium
conductors are prohibited. It is mandatory to separate the power supply for the
equipment from the non-computing power supply.
3-2
- Site Preparation Guide
Summary of Contents for CX1000
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