22 | SAMLEX AMERICA INC.
SeCtION 5 |
Installation
Dc oUtPUt connectionS
The Load Terminals (7A, 7B - fig 2.1)and the Battery Terminals (8A, 8B - fig 2.1) have
5/16” diameter tubular hole with set screw (5/16” x 3/8”long x 24TPI).
for ensuring firm connection under the set screw, 4 pieces of Pin Type of Terminal Lugs
“PTNB10-12” have been provided for crimping to the bare ends of stranded wires for the
load and battery connections. The terminal can accept wire of up to 10 mm
2
/ AWG #8.
After crimping the Terminal Lugs, use insulating heat shrink tubing or tape to insulate
the bare cylindrical portion of the lug.
Load connection: The load is connected to the terminals marked “Load +” and
“Load - ” (7A, 7B - fig 2.1) through fuse (f2) (See details below under heading
“External fuses on Battery & Load Sides”). Please ensure that the polarity of the connec-
tion is correct - Positive of the load to the “Load +” terminal and the Negative of the
load to the “Load - ” terminal.
Battery connection: The Positive of the battery is connected to the “B” terminal
(8A, fig 2.1) and the Negative of the battery to the “Battery - ” terminal (8B, fig 2.1)
through 80V, 25A fuse (f1) (See details below under heading “External fuses on
Battery and Load Sides”). Please ensure that the polarity of connection is correct.
Recommended Battery capacity: Battery should not be charged at very high current.
Normally, as a Rule of Thumb, the maximum charging current should be limited to 10%
of the Ah capacity at 20 Hour Rate unless higher current is allowed by the manufacturer.
Higher charging current produces higher heating which reduces the life of the battery.
further, higher charging current will not re-charge the battery to full 100% capacity
unless the charging voltage is increased proportionately. It is recommended that the
capacity of the battery used with this unit should be in the range of 10 to 25 Ah.
Dc oUtPUt WiRe SiZinG
Use AWG #10, 90°C / 194°f insulation wire for the load and battery connections for a
distance of up to 10 ft. Thicker wire will be required for distance longer than 10 ft.
eXteRnAL FUSeS on tHe BAtteRY AnD LoAD SiDeS
A battery is an unlimited source of current that can drive thousands of Amperes of cur-
rent into a short circuit leading to overheating and burning of wiring / circuit compo-
nents along the path from the battery terminals to the point of short circuit. This can
cause injury and is a fire hazard. Similarly, a power source is also be capable of driving
considerably high value of current into a short circuit on the load side and causing
damage as above (the current will, however, be limited to the maximum rated overload
current and not unlimited as in the case of a battery). Appropriate fuse should, there-
fore, be used in series with the battery Positive post / Load terminal of power source to
protect against the above safety hazard.
Summary of Contents for SEC-4825BRM
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