ShorPOWER ULTRA HF2023-09-12T15:42:15-05:00

ShorPOWER® Ultra HF™ Frequency Converter

ShorPOWER® Ultra HF™ Frequency Converter
Product Brochure Cabinet (20-45kVA)
Product Brochure Cabinet (50-90kVA)
Product Brochure Horizontal (100-125kVA)
Product Brochure Vertical (100-125kVA)

The ShorPOWER® Ultra HF is a state-of-the-art frequency converter containing features not available in any other converter on the market. Built using the latest generation of power semiconductors and state-of-the-art transformers, the converter is very compact and lightweight as well as being highly efficient. The ultra-high speed digital signal processor to create an absolutely pure output sine wave. The Ultra HF is available in two cabinet configurations; vertical or horizontal to increase the installation options on board.

Worldwide Power
The Ultra HF will automatically connect to any marina power source worldwide and provide clean, stable and reliable power for the yacht. Fully compatible with all types of marina breakers and complying with marine shore power supply regulations, having an Ultra HF on board makes the yacht a truly global vessel.

Advanced Power Design
The Ultra HF frequency converter utilizes state-of-the-art technology including the latest in power semiconductors and transformer technology, all controlled by a ultra-high speed digital signal processing control system to produce an absolutely pure output sine wave.

Reliable Power
The onboard guests do not want to be aggravated by flickering lights, black-outs and generator starts caused by fluctuations in the marina power. Regardless of the dock power supply quality the Ultra HF will always produce stable and reliable power. This reliability is achieved by manufacturing the marine power converter using only the highest quality components and by engineering the converter for actual marine use.

Maximize Marina Power
Many yachts have to reduce their air conditioning and galley loads when in the marina to prevent overloading the circuit breaker on the dock and losing all power. By conditioning and balancing the currents in the shore cord, the Ultra HF converter increases the amount of available power from the marina power system by as much as 35%. The Ultra HF is able to operate into a 100% imbalanced load while maintaining the precise regulation of all the output phases.

Marine Engineered
Designed from the ground up, based on years of marine experience, the converter is packaged in a lightweight aluminum enclosure and is engineered to operate in the worst marine conditions such as high ambient temperature and humidity. It has been extensively tested to ensure that when loads such as large motors and compressors start there are no fluctuations of the output power.


  • Automatically connects to any worldwide marina power system.
  • Works with any RCD / GFCI circuit breaker


  • Balances the current in the input phases regardless of output load imbalance.
  • Conditions the input power to maximize the available power.
  • Reduced current at start up prevents nuisance trip of marina breaker.


  • Provides protection to marine electrical equipment against marina voltage transients.
  • Output power is stable even when large output loads are applied.
  • Precise output voltage and frequency regulation.
  • Regulation remains precise even with unbalanced loads.
  • Generous overload capability so no need to start generator during peak times.


  • State-of-the-art power semiconductors and transformers.
  • Extensive protection and diagnostic system.
  • Network Compatible – Fully integrated Ethernet-based Communication Data Link (CDL) system


  • Seamless power transfer between ShorPOWER and generator.
  • Parallelable for increased capacity.
  • Color touchscreen remote control panel.
Onboard ShorPOWER Converters for Larger Yachts
SHFUltra HFUltra HPUltra HV
Unit Power Ratings37.5kVA - 125kVA20kVA - 125kVA150kVA - 1.6MVA100kVA - 125kVA
System Power Ratings75kVA to 1000kVA
40kVA - 1000kVA300kVA - 1.6MVA200kVA - 900kVA
Input Voltage177V - 528V177V - 528V177V - 528V350V - 528V
Alternate Input Voltage
Input Phase1 and 31 and 333
Output Voltage208V - 480V220V - 480V380V - 480V220V - 480V
Output Phase1 or 31 or 333
Frequency Conversion
Voltage Regulation
Surge Protection
Modular Enclosure
Extended Operating Temperature
Extended Overload
Dual Shore Cord Input
Seamless Transfer
Communications Data Link
Super Yacht Pulling up to Dock
Compass image


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