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TI2500 GPU-24
12
Section 3 – Operating Procedures
3.1 – Operating Procedures
This section deals with normal procedures, and includes all steps necessary to ensure safe and effi cient
operation of the unit.
NOTE
!
When the unit is not in use, it should always remain plugged into a suitable ac
power source to ensure operational readiness at all times.
NOTE
!
If current demand exceeds 25 amps, converter output voltage will drop below
28.5 Vdc and two or more LED status indicator bars will illuminate. If all
LED status indicator bars illuminate, both the converter and power cells are
supplying 24 Vdc power output.
3.2 – General
Correct operation of the unit includes both pre-use and operational checks of the unit. Knowledge of the
operating limits, restrictions, performance, unit capabilities and functions is fundamental to correct and safe
operation. The operator shall ensure compliance with the instructions in this manual that affect operational
safety and the warranty of the unit.
3.3 – Operating Limits and Restrictions
The minimum, maximum and normal operating ranges result from careful engineering and evaluation of test
data. These limitations must be adhered to during all phases of operation.
3.4 – Performance
Refer to Section 7, PERFORMANCE DATA to determine the capability of the unit. Consideration must be given
to changes in performance resulting from variations in ambient temperature, mode of operation, state of
charge (with or without ac power), and aircraft dc bus system ineffi ciency (voltage drops).
3.5 – Engine Starting Power
Operators should always ensure the unit is charged above 80% prior to ground support engine starting.
However, circumstances may exist during use where unit recharge is not readily available and immediate
external engine starting power is required. The following provides minimum states of charge necessary to
provide ample power for an effi cient engine start under specifi c current load demands.
ENGINE START PEAK CURRENT Requirements
MINIMUM CHARGE
Under 650 peak starting amps
0-50% charged
650 - 850 peak starting amps
50-60% charged
850 - 1000 peak starting amps
60-70% charged
1000 - 1200 peak starting amps
70-80% charged
1200 - 1500 peak starting amps
80-100% charged
ENGINE START PEAK CURRENT Requirements
MINIMUM CHARGE
Under 1200 peak starting amps
0-40% charged
1200 - 1500 peak starting amps
40-50% charged
1500 - 1800 peak starting amps
50-60% charged
1800 - 2100 peak starting amps
60-70% charged
2100 - 2400 peak starting amps
70-80% charged
2400 - 3000 peak starting amps
80-100% charged
Section 3 – Operating Procedures
3.1 – Operating Procedures
This section deals with normal procedures, and includes all steps necessary to ensure safe and effi cient
operation of the unit.
NOTE
!
When the unit is not in use, it should always remain plugged into a suitable ac
power source to ensure operational readiness at all times.
NOTE
!
If current demand exceeds 25 amps, converter output voltage will drop below
28.5 Vdc and two or more LED status indicator bars will illuminate. If all
LED status indicator bars illuminate, both the converter and power cells are
supplying 24 Vdc power output.
3.2 – General
Correct operation of the unit includes both pre-use and operational checks of the unit. Knowledge of the
operating limits, restrictions, performance, unit capabilities and functions is fundamental to correct and safe
operation. The operator shall ensure compliance with the instructions in this manual that affect operational
safety and the warranty of the unit.
3.3 – Operating Limits and Restrictions
The minimum, maximum and normal operating ranges result from careful engineering and evaluation of test
data. These limitations must be adhered to during all phases of operation.
3.4 – Performance
Refer to Section 7, PERFORMANCE DATA to determine the capability of the unit. Consideration must be given
to changes in performance resulting from variations in ambient temperature, mode of operation, state of
charge (with or without ac power), and aircraft dc bus system ineffi ciency (voltage drops).
3.5 – Engine Starting Power
Operators should always ensure the unit is charged above 80% prior to ground support engine starting.
However, circumstances may exist during use where unit recharge is not readily available and immediate
external engine starting power is required. The following provides minimum states of charge necessary to
provide ample power for an effi cient engine start under specifi c current load demands.
ENGINE START PEAK CURRENT Requirements
MINIMUM CHARGE
Under 650 peak starting amps
0-50% charged
650 - 850 peak starting amps
50-60% charged
850 - 1000 peak starting amps
60-70% charged
1000 - 1200 peak starting amps
70-80% charged
1200 - 1500 peak starting amps
80-100% charged
ENGINE START PEAK CURRENT Requirements
MINIMUM CHARGE
Under 1200 peak starting amps
0-40% charged
1200 - 1500 peak starting amps
40-50% charged
1500 - 1800 peak starting amps
50-60% charged
1800 - 2100 peak starting amps
60-70% charged
2100 - 2400 peak starting amps
70-80% charged
2400 - 3000 peak starting amps
80-100% charged
If current demand exceeds 25 amps(50 amps if used with optional Y-cable),
converter output voltage will drop below 28.5 Vdc and two or more LED status
indicator bars will illuminate. If all LED status indicator bars illuminate, both
the converter and power cells are supplying 24 Vdc power output.
Summary of Contents for 6130-01-452-2777
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