Exide Technologies Section 93.30 - Manual (Page 6)

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SECTION II
INSTALLATION AND OPERATION
1. SAFETY NOTICE
CAUTION! READ “IMPORTANT SAFETY INSTRUCTIONS” ON PAGE i.
There are dangerous voltages within the battery charger cabinet!
a. Only qualified personnel should attempt to adjust or service this equipment.
b. Refer to instruction manual for service procedures and CAUTION notes.
2. APPLICATION
Specifications: The silicon controlled rectifier is designed to maintain a system voltage within + or -
0.5% of the set value without exceeding its rated output current. It will maintain + or - 0.5% with input
voltage variations 10% above or below the rated input AC voltage and with 5% frequency variations.
The charger is designed, primarily, to operate only when connected to a battery load. It can be
operated as a battery eliminator into a resistive load up to full rated output at increased ripple. Filtered type
chargers will have a ripple content less than 30 mV RMS under steady state conditions with the charger
connected to a battery having an 8-hour Amp-Hour rating of at least 4 times the full load current rating of
the charger. Other connected loads such as DC-to-DC power supplies or inverters, may put ripple on the
battery appreciably above 30 mV.
Unfiltered chargers should not be used with critical loads such as communication systems, amplifiers
and instrumentation systems, but should only be used for non-critical applications such as engine cranking.
This charger can be used on any number of lead-acid, nickel-cadmium, or nickel-iron cells as long as
the desired float and/or equalize voltages are within the range of the charger.
3. INSTALLATION
a. Location: Select a clean, dry location for the charger. It may be located in the battery room, but not
over the battery, and must be mounted upright. The openings for ventilation in the top, bottom and sides of
the cabinet should not be obstructed, as they provide convection cooling and ventilation. Ambient
temperatures between 32° F and 122° F, and elevations up to 3,300 feet above sea level, will not affect the
performance of the charger. Operation at higher temperatures, or at higher elevations, is possible if the
ampere output is de-rated in accordance with published information, and if the charger is custom ordered for
these operating ambient conditions.
b. Wire Sizes AC: Wire sizes for the AC wiring may be selected by consulting the data on the
nameplate for input amperage. Local electrical or NEMA standards should dictate appropriate wire size.
Most codes specify that the AC wiring size must match the current rating of the input circuit breaker or
fuses.
c. Wire Sizes DC: The size of the charger leads should be selected to (a) carry the charger (ampere)
current rating, and also (b) provide less than 0.5 volt total drop at rated current in the loop or leads between
the charger and battery terminals. Choose the larger wire size that meets conditions (a) and (b). Do not
undersize. It is good practice to keep the DC leads as short as possible and to keep them together as a pair to
obtain low inductance. Likewise, it is good practice to avoid sharp bends and to run both DC leads together
if run in conduit.
d. Input Power: These chargers are nominal 208V, 240V, 480V (60 Hz) or 380/416V (50 Hz) AC
three phase. If the AC input data as supplied with the charger does not agree with the AC supply voltage at
the installation site, do not connect the charger to the AC line. The AC voltage must be within +/- 10% of
the rated input voltage of the charger. If not, consult your power company or the battery charger
manufacturer. These three phase input power chargers are not phase rotation sensitive, and thus any
combination of three phase input AC wiring may be used.