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Custom CDG140 Supplier, Suppliers

Ground Power Unit, CD Series

Model: CDG140

The CD Series 400 Hz GPU (Ground Power Unit) features a brushless revolving field generator, rubber torsion axle-mounted of rugged galvanized steel construction with fifth wheel steering and powder-coated sheet metal panels chassis (or mounted on truck chassis). The unit can be used for both military and civilian aircrafts with the latest emission standards.

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Product Description

Technical Parameters

No.	System Configuration Features	AC Specification	DC Specification
1	Capacity	140KVA (3-phase 4-wire)	23KW
2	Rated Voltage	115V/200V	28.5V
3	Output Connection	A, B, C, N	2-line
4	Output Mode	One output aircraft style cable, 36 feet long, with PJ500TB plug	One output aircraft style cable, 36 feet long, with PJ500T plug
5	Voltage Regulation Range	103V ～ 127V	20 ～ 32V
6	Stable Voltage Range	113V ～ 118V	26 ～ 30V
7	Rated Frequency	400Hz	/
8	Rated Current	406A	800A
9	Rated Power Factor (cosΦ)	0.8 (lag)	/
10	Transient State Voltage	90V ～ 140V	17 ～ 35V
11	Voltage Response Time	< 0.1s	< 0.1s
12	Steady-state Frequency	400Hz ± 1%	/
13	Transient-state Frequency	370Hz ～ 420Hz	/
14	Frequency Response Time	≤ 1s	/
15	Voltage Modulation	≤ 3V	/
16	Frequency Modulation	≤ 2Hz	/
17	Crest Factor	1.31 ～ 1.51	/
18	Total Harmonic Content	≤ 4%	/
19	Fluctuating Amplitude	/	≤ 1.5V
20	Ripple Voltage	/	≤ 1% (rms)
21	Distortion Coefficient	≤ 0.04	≤ 0.035
22	Waveform Phase	120° ± 2°	/
23	Phase Voltage Imbalance	≤ 3V	/
24	Overload Rating	120% 10s; 150% 2s	1200 ～ 2000A
25	Continuous Working Time	≥ 8h
26	Line Voltage Drop Compensation	Output cable voltage drop automatic compensation function
27	Mean Time Between Failure	MTBF ≥ 1000h
28	Mean Time To Repair	MTTR ≤ 30min
29	Service Life	≥ 10 Years
30	Environment Temperature	-30℃ ～ +55℃
	Relative Humidity	≤ 90% (+25℃)
	Altitude	≤ 4000m
31	Protection Function	AC Output Over-voltage or Under-voltage
		AC Output Over-frequency or Under-frequency
		DC Output Over-voltage or Under-voltage
		Internal Overheating And So On
		Water Temperature Is High
		Diesel Engine Oil Pressure Low
		Comprehensive safety shutdown mechanisms
32	Working Noise	< 85dB(A) @ 7m
33	Display	OLED screen
34	Display Accuracy	±1% FS (FS: full range)
35	Rated Speed	1846 rpm
36	Cooling	Water + Air
37	Chassis Choice	Towed
38	Diesel Engine Specs	Cummins Power Pack
	Model	6BTAA5.9-G12
	Rated Power	140kw
	Rated Speed	1846 r/min
	Style	6 cylinders, array, four stroke
	Air Inlet	Turbocharged, Intercooled
	Specific Fuel Consumption	≤ 215g/kW·h
	Displacement	5.9L
	Starting Way	24V electric start
39	Generator Specs	Intermediate Frequency Generator
	Output System	Outputs 115V/400Hz AC; Then outputs a circuit of 28.5V DC through the step-down rectifier module.
	Model	TFZPW
	Rated Power	140KVA 400Hz AC
	Rated Speed	1846 r/min
	Rated Power Factor cosΦ	0.8 (lag)
40	Dimension (L×W×H)	≤ 5000 × 1600 × 2100 mm
41	Total Mass	≤ 4700 kg
42	Max. Speed	15 ～ 20 km/h

Frequently Asked Questions

What are the primary power output capacities of this GPU system?

This dual-system Ground Power Unit features a highly efficient AC rated capacity of 140KVA (3-phase 4-wire system, 115V/200V) and a DC rated capacity of 23KW (28.5V system), designed to supply clean, reliable electrical power to modern aircraft.

Which engine and generator configuration drives this equipment?

The unit is engineered with a powerful Cummins 6BTAA5.9-G12 diesel engine (rated at 140kw and 1846 r/min) paired with a high-performance TFZPW intermediate frequency generator, offering dynamic stability and seamless automatic voltage adjustments.

How does the unit compensate for voltage drop across long output cables?

To guarantee steady voltage at the aircraft connector receptacle, the system features an automatic output cable voltage drop compensation function, adapting smoothly to load adjustments during intensive continuous operations.

What physical and environmental conditions is the system rated for?

Built to handle extreme conditions, the system is fully operational within an ambient temperature range of -30℃ to +55℃, handles relative humidity up to 90% (+25℃), and functions efficiently at high altitudes up to 4000 meters.

What safety and protection mechanisms are integrated into this power unit?

Safety features include comprehensive built-in protection logic covering AC/DC output over-voltage or under-voltage, AC output over-frequency or under-frequency, internal overheating, high water temperature, and low diesel engine oil pressure.

What are the system's design life and maintenance expectations?

The unit has a service life expectancy of 10+ years, featuring an excellent Mean Time Between Failure (MTBF) of ≥1000 hours, and a Mean Time To Repair (MTTR) of ≤30 minutes, ensuring minimal downtime and outstanding industrial reliability.