and Alignment Procedures
of this instrument should only be attempted by QUALIFIED PERSONNEL.
Connecting the primary winding of a current transformer without
terminating the secondary winding is very DANGEROUS and could result
in possible injury to personnel or equipment damage.
systems are dangerous at all times and should be respected and treated
like a hot circuit even when the charging system is turned off.
Inventory the shipping box for the following items:
BFAS Model SS9602 instrument with split core current transformer
set of mounting feet.
Steps 2 and 3 need to be determined at the same time.
the best location to place the instrument. The instrument may
be wall mounted or attached to an existing panel, i.e. the battery
disconnect or UPS system.
the best place to mount the current transformer on your system.
Keep in mind that the CT must be installed so that the full
load battery DC current conductors are passing through it. In
the case of multiple battery strings, the CT must be installed
at a common DC point so that it will include all the strings,
either all the positives or all the negatives.
Battery Failure Alarm System on the wall, disconnect, battery rack
or UPS System.
will be the same at any place in the circuit. Any loose connection
or high inpedence battery will result in a low current reading.
Working batteries with good connections will have a fluctuating
but consistent current reading.
parallel strings, place current transformer around all positives
or all negatives. This is, most often, easy to do in the disconnect.
Parallel currents, for example, of 5 amps per string will drop below
13 amps total should a battery or connection open in a three string
circuit. Setting the low alarm point just above 13 amps will capture
a failure in any string. For strings in parallel you can estimate
how far the total current will drop when a string opens or for best
results, you can open any string. This requires a UPS technician
or a UPS electrician.