Marine Isolation Transformers

When properly installed, Charles Marine Isolation transformers will electrically isolate the AC shore power from the boat's AC power system.  The boat's electrical system and the grounding conductor are not actually connected to the shore-side power.  There is no direct electrical connection between earth-grounded shore AC power and the onboard electrical system.  The shore ground is connected to a shield that is wound between the primary (shore) and the secondary (boat) transformer winding.  The connection of this grounding wire only to the shield of the transformer isolates the boat's AC electrical system from shore. 

Compliance with independent testing lab requirements maximize safety

• Marine UL listing ensures durability and safety
• New European CE EMC Certification (50hz models)
• Greatly reduced potential for in-water shock hazard
• Eliminates the need for polarity alarms and galvanic isolators

Superior technology guarantees top performance

• Fully-encapsulated components and transformer windings
• Full current carrying shield per ABYC E-11

Easy to install and use

• Occupies less space and easier to install than most units
• Terminal blocks for easy customer connections
• 3.6 KVA and 12 KVA units mount to either bulkhead or deck. 24 KVA unit mounts to deck only.

Corrosion-resistant housing and components

• Convection-cooled enclosure meets the intent of NEMA 3R requirements.

* DECK MOUNTED

Special custom transformers available - please contact customer service.

If you would like a copy of this and other products' detailed brochures, please fill out our Product Literature Form.

AUTOMATIC ISOLATION AND BOOSTING TRANSFORMER

Iso-Boost™ Automatic Isolation and Boosting Transformer for 50 & 100 Amp Service

Easy to install and use, operational status is indicated by four lights on the unit, and low-voltage bypass switch provides simple positive user control. Iso-Boost 50 occupies less space and is easier to install than separate units. Terminal blocks allow for easy customer connections. An optional remote indicator panel permits monitoring of operational status from any convenient location.

Iso-Boost 50 Automatic Isolation and Boosting Transformer is designed to operate on      50 Amp systems. Iso-Boost 100 Automatic Isolation and Boosting Transformer includes features similar to Iso-Boost 50, but is designed for 100 Amp systems.

An Iso-Boost Automatic Marine Isolation and Boosting Transformer is essential where long dock runs cause voltage drops or fluctuations in power. The compact unit provides all the magnetic power transfer benefits of an isolation transformer, plus automatically "boosting" low or fluctuating voltages from the dock.

Iso-Boost distances itself from existing designs by meeting all requirements of ABYC E-11. Transformer windings are encapsulated and the shield providing safety between primary and secondary windings is of sufficient ampacity to provide a full fault-current path. In addition, lso-Boost 50 has been subjected to thermal, vibration and shock tests indicative of the marine environment by Underwriters Laboratories, and carries their prestigious Marine UL listing.

Internal circuitry monitors shore and boat voltages, and then adjusts output. The "boost" mode increases the isolated output voltage by 15% to supply appropriate power in the event of low voltage or wire losses during peak power times. If the dock voltage fluctuates above 225 VAC, the unit switches back to the normal isolated output. Mechanically interlocked contactors switch the output between "regular" and "boost" modes, a redundant safety feature that prevents internal shorts and enables a highly efficient voltage transition since there are virtually no losses across the contactors.

Compliance with independent testing lab requirements maximize safety

• Marine UL listing ensures durability and safety
• Greatly reduced potential for in-water shock hazard

Constant, safe, power in spite of long dock runs and voltage fluctuations protects on-board equipment

• Permits operation of 240VAC systems from 208VAC dock supply

Superior technology guarantees top performance

• 12 or 24KVA fully encapsulated isolation transformer and full current carrying shield per ABYC E-11.

Easy to install and use

• Illuminated POWER, BOOST, and LOW VOLTAGE indicators and a low voltage BYPASS switch provide simple, positive user control.
• Status indicators and Bypass switch also available on an optional remote panel.
• Occupies less space and easier to install than separate units.
• Terminal blocks for easy customer connections.

Corrosion resistant housing and components

• Housed in a convection-cooled enclosure meeting the intent of NMEA 3R requirements.

Corrosion-resistant housing and components

• Convection-cooled enclosure meets the intent of NMEA 3R requirements.

If you would like a copy of this and other products' detailed brochures, please fill out our Product Literature Form.