True blue power TB17 Series, Руководство по установке и эксплуатации

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18 Manual Number 9018047 • Revision L, January 6, 2022
Normal Operating
A fully charged unit can provide up to 500 amps continuously until the battery is depleted. If
the discharge current is greater than 500 amps, the battery will then limit discharge to 15
seconds.
Engine Start
The TB17 battery can provide current beyond 500A and up to 840A for up to 15 seconds
such as when starting the aircraft engine. The low internal impedance of the
Nanophosphate lithium-ion chemistry allows extremely high current delivery while
maintaining higher voltage than traditional battery types. This equates to a higher total
power delivery, producing quicker starts, more start attempts if needed and a higher
remaining battery capacity following engine start.
Maintaining Charge
After engine start, the unit recharges and maintains charge by accepting power from the
aircraft power generation system. During charging, the battery can draw up to 37.5A before
the charge limiting activates and then restricts the input to a maximum of 34A. Even at the
charge limit rate of 34A, a fully depleted unit will completely recharge in about 30 minutes.
In typical applications, the unit is likely to be fully re-charged from the aircraft power
generation system within several minutes following an engine start.
4.3 ACTIVE MONITORING
When in Active Mode, the TB17 presents multiple status indications to the aircraft for display and
monitoring on appropriate systems. These are supplied as discrete analog signals. The various
outputs and their definition are supplied below:

FAIL (Pin A): A steady signal on pin A indicates a non-recoverable error.

FAULT (Pin A): An alternating signal (on for 0.3 seconds; off for 0.3 seconds)
indicates a recoverable error.

Heater (Pin B): A steady signal on pin B indicates that the heater is active.

Charge (Pin C): A steady signal on pin C indicates the battery is charging and that it
is less than 95% SOC (state of charge).

Test (Pins A,B,C): A steady signal on pins A, B, and C will activate for three (3)
seconds when the unit initially enters Active Mode.