22 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 23
SeCtION 5 |
Installation
For effective protection, appropriate sizes of fuses should be located as follows:
• External Battery Side Fuse (F1) should be LOCATED as close to the battery Positive
post as possible, preferably within 7” of the battery Positive post
• External Load Side Fuse (F2) should be installed as close as possible to the Positive
Load Terminal
for this unit, external fuses must be used for protection against reverse polarity and
short circuit as follows (please see specs for f1 & f2, fig 2.1, page 5):
• 80V, 25A fast acting Fuse (F1) in series with the Positive battery wire within 7” from
the battery Positive post. This fuse provides the following protections:
-
Prevents overheating and burning of wiring due to very heavy current fed from the
battery into a short circuit along the length of wiring from the battery to the Battery
Input Terminals (8A, 8B, fig 2.1).
-
Prevents damage to the unit and to the load due to reverse polarity of battery connection.
• 80V, 25A fast acting Fuse (F2) in series with the Positive load wire and within 7” of
the Positive Load Terminal (7A, fig 2.1). This fuse protects against overload and short
circuit on the load side.
Please refer to fig 2.1, page 5 - Layout & Input/output Connections.
!
cAUtion!
1.
If AC input power is not available and a battery has been connected for backup func-
tion, the load will be powered by the battery and the battery will continue to discharge
as long as the load is in oN condition. When the load is not delivering power, it still
draws current for its self-consumption (called "No Load Current"). When AC input
power is not available, switch off the load if not required, otherwise the battery will
get discharged because of the "No Load Current" drawn by the load.
2.
When AC input power is NoT available/switched off, battery has been connected for
backup and load has been switched off. The battery will still discharge around
100 mA through the static load resistor connected across the load terminals (for mod-
ule synchonization under no/low load conditions). In this situation, please remove fuse
f1 to prevent unnecessary discharge of the battery.
SWitcHinG on / oFF
Switching on (Without Battery Backup - no external Battery -
Unit operates as a normal Power Supply):
-
Check that the load has been connected to the Load Terminals (7A, 7B - fig 2.1)
and NoT To THE BATTERY TERMINALS (8A, 8B, fig 2.1)
-
Switch oN the unit with the help of the Red Power oN / off Switch (1). If AC power is
available and the AC input breaker (2, fig 2.1) is not tripped, the oN / off Switch will be
lighted Red indicating that the Power Supply Section is in oN condition
-
After a few milli sec, 54.8V will be available at the Load and Battery Terminals
-
Switch oN the load
SeCtION 6 |
Operation
Summary of Contents for SEC-4825BRM
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