Hydraulic Ground Power Unit

HGPU

Hydraulic Ground Power Unit

Hydraulic Ground Power Units are mainly used inside the hangar. A crucial factor for these operators is the noise. With a noise level of 72 dB, full load, at a distance of 1 meter makes communication hassle-free. The well-engineered design of the hydraulic cart has many advantages. One of the highlights is its clean functioning. The hydraulic installations and the cooling are separated. Therefore it is impossible that Skydrol contaminates the environment. Neither the aircraft nor the operator will suffer from oil contamination, saving a lot of time and hassle in cleaning processes.

Inquire now

Technical Specification

Hydraulic Parameters:	High Pressure: depending on unit type High Pressure Circuit - Single System 3000psi: 7 - 207 bar at max. 190-227 lpm, 100 - 3000 psi at max. 50 -60 USgpm, max. 275bar (4000 psi) at reduced flow rate High Pressure Circuit - Single System 5000psi: 7 - 345 bar at max. 227 lpm (100 - 5000 psi at max. 60 USgpm), max. 375 bar (5300 psi) at reduced flow rate High Pressure Circuit - Dual System: 2 x 7 - 207 bar at max. 2 x 95 at 2 x 114 lpm, 2 x 100 - 3000 psi at max. 2 x 25 at 2 x 30 USgpm, max. 2 x 275 bar (2 x 4000 psi) at reduced flow rate
Measurement accuracy:	Supply pressure (analog): 0 – 400 bar (0 – 5800 psi), cl. 1 (EN 837) Return pressure (analog): 0 – 10 bar (0 – 145 psi), cl. 1.6 (EN 837) Oil temperature indicator: 0 – 100°C (32 - 212°F) Flow measurement: Single circuit 0.32 - 250 lpm (0.08 - 66 USgpm) ±1% of full scale Dual circuit 0.32 - 160 lpm (0.08 - 42 USgpm) ±1% of full scale Depending on the type of the equipment, the following hydraulic oils can be used: Phospate-Ester Hydraulic Oil (”Skydrol” or ”Hyjet”) or Mineral Oil based Hydraulic Oil (”MIL-H-5606”, ”MIL-H-83282”, ”MIL-H-87257”) Filter: 3 micron in filling circuit, 6 micron in each low and high pressure circuit 25 micron in return (Option D)
Operating conditions:	Ambient temperature: -25 to +45 °C (-13 to +113 °F) Noise emission: Electrical power supply: max. 75 dB(A) at 39.4 in (1m) distance Diesel power supply: approx. 84 dB(A) at the operating Panel (at 2200 rpm, approx. 50 USgpm, 3,000psi)
Dimensions and empty weights:	Assembly 1: 5,000 psi - HGPU60-50-1: Length: 3,950 mm (13,0 ft); Width: 1,800 mm (5,9 ft); Height: 1,700mm (5,6 ft); Weight: 2,900 kg (6400 lb) Assembly 2: 3,000 psi - HGPU50-30-1; HGPU30-30-2 Length: 3,800 mm (12,5 ft); Width: 1,800 mm (5,9 ft); Height: 1,700 mm (5,6ft); Weight: 2,500 kg (5,500 lb) Assembly 0: Diesel units - HGPU50-30-1; HGPU60-50-1 Length: 4,600 mm (15,1 ft); Width: 1,800 mm (5,9 ft); Height: 2,100 mm (6,9 ft); Weight: 3,200 kg (7,050 lb)

Unit Types

Aircraft System	Type	Engine	System	Flow (USgpm)*	Motor (kW)
3000 psi	HGPU50- 30-1	Electric or Diesel	Single	50	75 - Electric / 114 - Diesel
3000 psi	HGPU30- 30-2	Electric	Dual (Independent)	2 x 30	2 x 45
5000 psi or 3000 psi	HGPU60- 50-1	Electric or Diesel	Single	60	132 - Electric / 173 - Diesel

Other Versions possible

* The specified values are based on the nominal flow at 50Hz supply, the values are proportionately higher at 60 Hz.

Applications

All usual civil passenger aircraft - depending on the ordered coupling kits.

OEM	Aircraft
Airbus	A220, A300, A310, A320, A330/ 340, A350, A380
Boeing	B737, B747, B757, B767, B777, B787
Embraer	ERJ135/ 145, E-Jets
Bombardier	CRJ Series (C-Series)
Antonov	AN124, AN148
Sukhoi	SuperJet 100
Irkut	MS21

Accessories

Different coupling kits

Features

Electric or Diesel power
Single or dual circuit
Easy pressure control using the 0psi, 3,000 psi / 5,000 psi push buttons as applicable
The stainless steel hydraulic reservoir has a capacity of 240 l (63 USgal)
Hydraulic reservoir selection (A/C or HGPU) via illuminated buttons on the control panel
Very suitable hydraulic supply for “Ram Air Test Ground Checks” (together with the Airbus certified RAT Tester P/N PGRAT 1, P/N RATMK, P/N RATMK 350, P/N RATMK 380)
Automatic over temperature shutoff feature at 70 °C (160 °F)
Ramp function for soft pressure build-up
Pressure and flow rates are infinitely variable and limitable
Easy draining and filling of the aircraft reservoirs is carried out by ”Fill”/ ”Drain” push buttons
Two large fan operated oil-air coolers ensure optimum cooling
Easy access is provided by the hydraulically operated cover
Free from Skydrol vapours
Automatic over-temp protection
Separate low pressure circuit for anti-cavitation
Entire life cycle support and spares
Special low pressure circuit guarantees constant cleaning and cooling of hydraulic medium
Simple but sophisticated design
Waterproof cover made of GRP, Skydrol resistent
OEM quick disconnect couplings available
Change the filter only upon indication
Customer specific color options
Maximum towing speed is 15 mph (25 km/h)
Dual system without a transfer gear box (to prevent the possibility of hydraulic/lubricating oil contamination)
Phospate-Ester Hydraulic Oil (”Skydrol” or ”Hyjet”) or Mineral Oil based Hydraulic Oil (”MIL-H-5606”, ”MIL-H-83282”, ”MIL-H-87257”)

Options

Description
Flow measurement with digital indicator: Single system 2 to 66 USgpm (10 to 250 l/min), ±1% of full scale Dual System (independent) 1.3 to 42 gpm (5 to 160 l/min), ±1% of full scale
Flushing circuit with loading system
Filter (25 micron) in the return line
Sampling points
Comfortable filling neck outside of the housing
External filling level indication
180 degree swivel adapters
PLC operation
IoT gateway