Cellwatch Frontier System Installation & User Manual
Section I – Installation Guide-28
It is important that the current transducer face the proper direction to correctly identify a discharge
event. The (+) of the transducer should face the containers if installed on the positive bus of the battery.
The (-) of the transducer should face the containers if installed on the negative bus of the battery.
Towards If Negative, Away if Positive is an acronym often used for remembering the direction of current
flow in the current transducer. The T.I.N.A.P. method still applies for the directional arrow. The arrow
should face towards the battery if positioned on the negative bus and away from the battery if on the
positive bus.
Direction of current transducer on positive or negative bus cable
The standard current transducer used in a Frontier system has a 100A range to monitor for discharges.
Current transducers with different ranges have been approved for use with the Frontier and can be
found in the table below.
NDSL approved current transducers:
Function Range(s)
Charge CT 5A
Discharge CT 50A, 100A, 300A, 600A, 1000A
The various types of discharge current transducers are shown below along with the wiring specific to
each unit.
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