HeliPOWER™ Ground Power Unit

HeliPOWER™ Ground Power Unit
Product Brochure
Atlas Marine Systems is the world leader in the design of marine electrical power systems which includes electrical distribution systems and switchboards, load management and power management systems. The Atlas ShorPOWER® product line provides the widest selection of onboard frequency converters used to facilitate worldwide “Ship to Shore” interface regardless of marina power available. Additionally, Atlas’ onboard products provide transient suppression and power conditioning for the more sensitive loads often used aboard yachts. In recent years Atlas has added to its onboard product offering the ability to provide both 28VDC and 400Hz power units designed to operate helicopters typically used in conjunction with certain yachts having heliports. The HeliPOWER 28 as defined herein is used to support 28VDC helicopters.

The HeliPOWER 28 unit provides up to 600 amps continuous current and 2,000 amps of engine starting current with a 28VDC output voltage rating. Although there are other 28VDC products available at these specified current levels, they are all of a 1940’s transformer-rectifier design technology, unlike the state-of-the-art IGBT driven, high frequency, PWM technology used in Atlas’ one-of-a-kind HeliPOWER 28. In addition, other 28VDC units are not designed for the more extreme environmental demands that exist on marine luxury yachts.

The HeliPOWER 28 salient design features uniquely offered “in combination” for yachting applications that are not available in other 28VDC GPUs are as follows:


  • IP55 Enclosure
  • UL 1012 Certification
  • Longest output 28VDC distribution distance – up to 100 feet (approx. 30 meters) to meet shipboard needs
  • Ultra lightweight, less than half of all other 28VDC GPUs
  • ≤ 5% input current distortion IAW Shipboard Specifications
  • Multi Language (Romanization) Front Panel (Specify)
  • Self-diagnostic capabilities for minimizing downtime
  • Fully compliant to aircraft interface standards such as, ISO 6858 and MIL-STD-704 at the output plug-head
  • Advanced Integrated Display (AID) Console
  • 8000 Event Log / Diagnostics
  • TCP/IP/Ethernet Interface (Modbus)
  • 15% Power Regulation
  • Internal Communication Ports – USB, RJ45 (Ethernet), RS485 (Modbus), & RS232
  • External Ports – RJ45 (Ethernet) & USB
  • Emergency Power “OFF” Switch
  • Voltage and Current Monitoring
  • Elapsed Time Meter Access
  • Front Panel Voltage Adjust
  • Front Panel Summary Fault Indicators
  • Input High Voltage Transient Protection
  • Output Current Limit Adjust from 150 to full rated current
  • Output Safety Disconnect
  • Forklift Tubes – 4 Inch


  • DC Output Power Cable with Plug (Available in lengths up to 100 feet)
  • Lockable Front Door
  • Custom Paint and Decals (Standard Color – White)
  • CSA Certification
  • CE Mark Certification
  • 400Hz Output Combination Units
  • 9 or 12 Inch Top Cable Storage Rack


InputType3 Phase
Voltage177 to 528 Volts
Frequency 50 to 60 Hz ± 10%
OutputPower Ratings600 Amps Continuous;
Engine Start Capacity
(10% duty cycle)
Up to 2000 Amps for 30 Seconds
(10% duty cycle)
1000 Amps for 1 Minute
EnvironmentProtectionOverload, Short Circuit, Over Voltage, and Safety Disconnect
Temperature Range-40°C to +55°C
Humidity10% to 95%
EnclosureType 3SX, IP55


Helicopter Power Converters
Input Voltage177V - 528V
Alternate Input Voltage
Output Voltage28V
Output PhaseDC
Frequency Conversion
Voltage Regulation
Surge Protection
Modular Enclosure
Extended Operating Temperature
Extended Overload2000A
Dual Shore Cord Input
Seamless Transfer
Communications Data Link
Tropical Huts By the ocean


The safest, most reliable and cost-effective marine electrical power system starts with a quality design

Select Atlas’ team of highly experience and degreed marine Electrical Engineers to provide the optimum electrical power system design for your vessel. Their many years of…

Detailed Documentation Package

The engineering design team at Atlas Marine Systems provides a detailed documentation package that assists the shipyard in identifying the electrical power system components and equipment…

Atlas — Your single-source electrical supplier for design and equipment

The Atlas design service is an enhancement to an electrical system using Atlas TecPOWER AC and DC switchboards and ShorPOWER frequency, voltage and phase converters. Intimate…

Go to Top