90kVA Ground Power Unit with 400Hz 200/115V , GPU for Supply Power to Aircraft

Main Performance and Technical Specification

1. GPU Output Technical Data

2. Overall Dimension and Weight:

Overall Dimension: 3800*1800*2200mm
Total Weight: 4540kg
Noise Level: ≤75dB(A) at 7 Meters distance, and in 1 Meter height.

1.3 Specification of Cummins Diesel Engine For GPU:

1.4 Specification of 400Hz Alternator:

1.5: Control Panel:

Use the Deepsea brand DSE5310 controller to control and protect the diesel engine and alternator.
Use the OMRON PLC CPIH-XA40 for output control and DC protection.

2. Technical Data: Conform to MIL-STD704E Standard
2.1. Three Phase AC Power:
2.1.1. Rate Voltage 115/200V, 3 Phase Four Wires;
2.1.2. Rate Frequency: 400Hz;
2.1.3. Rate Output: 72kW/900kVA;
2.1.4. Power Factor: 0.8;
2.1.5. Rate Current: 259.8A；
2.1.6. Excitation Mode: Solidity, Self-excitation;

2.1.7. Voltage Standard:
2.1.7.1. Steady Voltage Range: 108-118V, from no load to full load;
2.1.7.2. When one phase output with 1/3 of rate current, and other two phase without output, the voltage unbalance will not exceed 4%;
2.1.7.3. Voltage modulation: ≤2.5V；
2.1.7.4. When in balance load, phase voltage shifting 120°±4°；
2.1.7.5. Distortion Ratio: ≤ 0.05；
2.1.7.6. Wave Crest Ratio: 1.31-1.51；
2.1.7.7. Phase Voltage Adjustment Range in No Load: 115±12V.
2.1.7.8. Transient State Voltage Recover Time Conform to MIL-STD 704E Chart 6 standard, Phase voltage transient state surge voltage range: 90 - 140 V, Steady voltage range: 113 - 117 V.
2.1.7.9. Add and Remove 100% Load, Deviation: ±20%;
2.1.7.10. Voltage Adjust Range: ±12V;
2.1.7.11. Three phase average sense and inner wiring voltage drop compensate maximum 5%(adjustable)

2.1.8. Frequency Standard:
(A) Rate Frequency: 400Hz；
(B) Steady Frequency Range: 396-404Hz;
(C) Frequency Steady Time: ≤1S in ±5Hz
(D) Frequency Modulation: ＜2Hz

2.1.9. A.C. Protection System
(A) Over Voltage Trip: Voltage exceed 126V(110% of rate voltage), delay 1-2seconds
(B) Low Voltage Trip: Voltage Lower than 101V(88% of rate voltage), delay 7 seconds.
(C) Over Frequency: Frequency Exceed 430Hz, delay 2-5 seconds, trip.
(D) Low Frequency: Frequency lower 370Hz, delay 1-3 seconds, trip
(E) Over Load: 125% of rate load for 5ninutes, trip, 150% of rate load for 10seconds, trip.

2.2 DC 28V Output, Two lines, output data:
(a) Ripple Wave: 1.5V RMS(Active Amount) @ 500A;
(b) Steady Voltage Range: 24-29V;
(c) Protection: in 32V(factory setting), delay 2seconds, trip;
(d) No Load Voltage Adjustment Range 24-32 VDC;
(e) Transient Surge Voltage: 17-35 VDC;

2.3 DC 56V Output Data(all data measure from the 15meters cable end socket):
1) Rate Voltage: DC 56V;
2) Rate Current: 800A；
3) Surge Current: 1600A(5min)；2000A(30s)；
4)Output Voltage 0-56V Slow Rise, Rise Time is adjustable.
5) Steady Voltage Range: 48-59V
6) Ripple Wave: 1.5V RMS(Active Amount) @ 500A,
7) Over Voltage Protection: When voltage at 63V(factory setting), delay 2seconds, trip.

2.4 Safety System:
2.4.1. Common Safety System
1)AC Cable interlock switch install in the E and F contact pin of connector, it will prevent power connection to air-craft, when incorrect connection of cable to aircraft is happened. There is a interlock bypass switch install in the GPU for testing mode.
2)Emergency Stop Switch install in the GPU for emergency stop the GPU, when it is necessary.
3)Safety interlock parts install in the battery circuit of truck to prevent the truck start and run, when the operator still have put the power cable storage bin with correction location.

2.4.2 GPU Engine Protection
1)Over Speed Protection
2)Low Oil Pressure Disconnection.
3)Engine high temperature disconnection.
4)High water temp.