Digital Equipment HA3000, Руководство по установке

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INSTALLATION 4–9
4.3 HA32B UPS BATTERY CABINET
The UPS Battery Cabinet is shipped with the lower front and lower rear panels removed.
The hardware needed to install these panels is in place.
4.3.1 General Installation
The UPS Battery Cabinet is designed for use with the HA32A UPS equipment only.
Generally, the UPS equipment is installed as close as possible to the UPS Battery Cabinet
(recommended less than 6.1 m [20 ft]). This is done to minimize the size of the battery
power conductors that must be run between the UPS cabinet and the UPS Battery
Cabinet. Excessive voltage drop in the battery power conductors causes a decrease in
the anticipated protection time. The maximum dc current required to flow between
the UPS Battery Cabinet and the UPS cabinet with which it is intended to operate is
shown in Table 4–2. The maximum cable voltage drop should be limited to 0.5 Vdc at the
maximum dc current.
CAUTION
When multiple UPS Battery Cabinets are installed, the lengths of all dc power
cables should be the same. This is to prevent differences in cable voltage drop
within the operating UPS system.
Table 4–2 Maximum DC Current Requirements
UPS Battery Cabinet
Model Number
Maximum DC Current
(Amperes)
HA32B-XH 54.6
HA32B-XK 109.2
HA32B-XM 163.9
HA32B-XN 218.5
The UPS Battery Cabinet is shipped from the factory with all batteries firmly secured
in place. Battery strings within a rack are wired together, except for a single link or
interbattery connector (one per battery cabinet) that is removed for shipment. This
interbattery link must be installed before attempting to use the UPS Battery Cabinet.
WARNING
When securing the battery connections, it is essential to use tools with an
insulating sheath and to wear gloves (provided in the Safety Toolkit). A
short circuit between battery terminals or other conductive surfaces could
be hazardous.