Xyratex RS-1600-FC-FFX2, Инструкция по установке и эксплуатации

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Getting Started
23
2.4.3 -48V DC PSU Procedure
Important PSU2 (RH rear bay) must be fitted “upside-down” as shown in Figure 2–1 .
2.4.3.1 -48V DC PSU Safety Requirements
Voltage Rating
The marked rated voltage for the -48V DC Power Supply/Cooling module is -40V DC to -60V DC. The
equipment is intended to operate from a centralized dc supply system with a NOMINAL voltage of -48V
DC or -60V DC.The voltage from a nominal -48V DC system may vary, due to float charging or discharge
conditions, from -40V DC to -60V DC.The voltage from a nominal -60V DC system may vary, due to float
charging or discharge conditions, from -48V DC to -72V DC.
Caution If this equipment is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired.
Equipment Location
The rear of this Equipment (in particular the supply terminals and wiring to the terminals on the power
supply) must only be located in a “RESTRICTED ACCESS LOCATION” where both of the following
apply (Ref.UL60950):
• access can only be gained by SERVICE PERSONNEL or by USERS who have been instructed
about the reasons for the restrictions applied to the location and about any precautions that shall be
taken; and
• access is through the use of a TOOL or lock and key, or other means of security and is controlled
by the authority responsible for the location.
Access restrictions are applicable where:
• The DC mains wiring to the terminals on the PSU are not enclosed.
• The PSU input terminals have exposed voltages that may exceed the 60 volt SELV limit during float
charging of battery supply.
• The PSU input terminals have exposed hazardous energy levels, i.e. very high current capability.
Disconnect Device
The wiring installation must provide a disconnect device close to the product.
Wiring
Must be connected in accordance with the local and National wiring regulations.
Wire Temperature Rating
The supply wiring to the power supply terminal blocks must have a minimum temperature rating of 75ºC.
Terminal Block Screw Torque
The screws on the terminal block must be tightened to a torque of 2.4 Nm (21 in-lb.)
Circuit Protection
The building installation must provide overcurrent and short circuit protection in the non earthed supply
conductor.