115V 400Hz and 28VDC Combi GPU

1.Rated Power: 30kVA to 180kVA (400Hz AC) / 300A to 1000A (28VDC)
2.Technology: Integrated Solid-State Static Frequency Converter & DC Rectifier
3.Input: 3-Phase, 208V-480V, 50/60Hz Mains Supply
4.Output: 3-Phase 115V/200V, 400Hz AC & 28.5VDC simultaneously
5.Key Applications: Comprehensive aircraft ground power for avionics, lighting, galley, engine start, and DC systems
6.Core Features: Single-unit dual-output design, high efficiency (≥93%), MIL-STD-704F & GJB compliant, auto voltage compensation
7.Brand: ACSOON (OEM/ODM Supported).

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Product Description

115V 400Hz and 28VDC Combi GPU | Dual Output Ground Power Unit

XI'AN JERRYSTAR INSTRUMENT CO., LTD introduces the advanced 115V 400Hz and 28VDC Combi GPU, an all-in-one ground power solution designed to streamline aircraft servicing. This innovative unit combines a high-quality 400Hz AC power source and a stable 28VDC rectifier in a single, compact cabinet. Eliminating the need for separate power carts, our Combi GPU provides simultaneous power for all aircraft systems, enhancing efficiency and reliability for military and commercial aviation maintenance, testing, and turnarounds.

Datasheet

Parameter	Specification
Model Series	ACSOON GPU400 Combi Series
Input	Voltage: 3-Phase 208V, 380V, 400V, 415V, 440V, 480V ±15% Frequency: 50Hz / 60Hz (40‑70Hz range) Power Factor: ≥0.9
AC Output	Voltage: 115V (L-N), 200V (L-L), 100-130V adjustable Frequency: 400Hz ±0.01% Configuration: 3-Phase, 4-Wire + PE Power: 30, 45, 60, 90, 120, 180 kVA THD: <2%
DC Output	Voltage: 28.5VDC (20-32VDC adjustable) Current: 300A, 400A, 500A, 600A, 800A, 1000A Ripple: ≤0.25V Regulation: ±0.5% FS (Line & Load)
Efficiency	≥93% (Overall System)
Display	Central VFD Digital (V, I, P, F/PF for AC; V, I for DC; Faults)
Protections	Complete suite for both AC & DC (Over V/I, Short Circuit, Over Temp, Phase Loss)
Cooling	Forced Air
IP Rating	IP54
Operating Temp.	-20°C to 50°C
Noise Level	<65 dB at 1 meter
Standards	GJB572A-2006, GJB181A-2003, ISO6858, MIL-STD-704F, EN61000

115V 400Hz and 28VDC Combi GPU Main Features

Unified Dual-Output Design: Single cabinet houses both a 400Hz static frequency converter and a 28VDC switching rectifier.
Advanced AC Power Stage: 12-pulse input rectification (PF≥0.9), SPWM inverter, auto voltage compensation (100-130V L-N adjustable).
Precision DC Power Stage: High-frequency transformer isolated, output adjustable from 20-32VDC with excellent line/load regulation (±0.5%).

Why Choose ACSOON 115V 400Hz and 28VDC Combi GPU?

The ACSOON 115V 400Hz and 28VDC Combi GPU delivers unparalleled convenience and performance for modern aviation GSE operations:

Dual Output in One Unit: Supplies both critical 115V 400Hz AC and 28VDC power from a single source, saving space, cost, and operational complexity on the ramp or in the hangar.
Superior Power Quality: AC output features pure sine wave with <2% THD and precise regulation (±1% voltage, ±0.01% frequency). DC output provides low-ripple (<0.25V), tightly regulated 28.5VDC power.
High Efficiency & Reliability: ≥93% system efficiency reduces energy costs and thermal stress. Built with robust 12-pulse rectifier and SPWM inverter technology for maximum uptime.

115V 400Hz and 28VDC Combi GPU Application Areas

This versatile Combi GPU is essential for comprehensive aircraft ground support:

Integrated Aircraft Servicing: Powers AC systems (avionics, cabin lights, galley) and DC systems (control circuits, batteries, communications) simultaneously during turnaround.
Hangar Maintenance & MRO: Provides complete power for prolonged maintenance, repair, and overhaul procedures without requiring multiple external power sources.
Military Aircraft Support: Meets stringent MIL-STD-704F and GJB standards for powering complex military transport, surveillance, and fighter aircraft requiring both AC and DC ground power.

Our Services

Quality Control

Each 115V 400Hz and 28VDC Combi GPU is subject to a rigorous multi-stage validation process:

Incoming inspection of all IGBTs, transformers, capacitors, and control boards.
Sub-assembly testing of the AC inverter and DC rectifier modules.
Full-system integrated burn-in test under combined AC and DC load profiles simulating real aircraft demands.
Performance verification against MIL-STD-704F for AC and relevant DC specifications.
Final safety inspection, operational test, and certification documentation.

R&D Results

Our focused R&D for the 115V 400Hz and 28VDC Combi GPU has achieved key innovations:

Optimized Thermal Management: A unified cooling system that efficiently manages heat dissipation from both power sections within one enclosure.
Shared Control Architecture: A single DSP-based controller manages both converters, ensuring coordinated operation, synchronized fault response, and simplified user interface.
Compact Footprint: Advanced component layout and shared auxiliary circuits (like input filtering) reduce the overall size and weight compared to operating two separate units.
Enhanced Diagnostic Logic: Cross-functional fault analysis that can identify whether an issue originates from the input, a specific output section, or the shared control system.

Packaging and Transportation

The unit is securely mounted inside a custom-designed, heavy-duty wooden crate with reinforced corners.
Internal bracing and high-density foam protect all panels, connectors, and the display.
Shipping documents include detailed manuals, electrical diagrams, test certificates, and a packing list.
We coordinate with global logistics partners for door-to-door delivery, handling customs clearance

After‑Sales Service

Standard 24-month warranty covering parts and labor.
Dedicated 24/7 global technical support line and email.
Option for on-site installation supervision, operator training, and commissioning.
Worldwide availability of spare parts and access to detailed service manuals.

Qualification Certification

Manufactured in an ISO 9001:2015 certified facility;Designed and tested to comply with MIL-STD-704F, GJB, and ISO6858;CE Marking for the European market;Comprehensive test report accompanies each unit.

FAQ
Q1: What is the main advantage of a Combi GPU over separate AC and DC units?
A: It saves significant space on the ramp/in the hangar, reduces capital expenditure (one unit vs. two), simplifies logistics and maintenance, and requires only one connection to the airport mains, streamlining operations.
Q2: Can both AC and DC outputs be used at their full rated power simultaneously?
A: Yes, the unit is designed to deliver full rated power on both outputs concurrently, provided the total input power capacity (kVA) from the mains is sufficient.
Q3: Is this unit suitable for powering the latest generation aircraft (e.g., B787, A350)?
A: While these newer aircraft often use 230V variable frequency power, the 115V 400Hz output remains essential for many onboard systems, ground support equipment, and especially for the vast existing fleet. The 28VDC output is universally required. Our engineers can advise on specific compatibility.
Q4: What communication interfaces are available for remote monitoring?
A: The unit is typically equipped with RS232/RS485 ports using Modbus protocol, allowing integration into airport GSE monitoring networks or building management systems.
Q5: What are the installation requirements?
A: Requires a suitable 3-phase AC mains connection (208-480V), a level, firm surface (or pit), and standard grounding. We provide detailed installation manuals and can offer on-site support.

For technical specifications or global solutions for the 115V 400Hz and 28VDC Combi GPU: acpower@acsoonpower.com, or submit your requirements using the form at the bottom of our website.