Marine Isolation Transformers  Marine Isolation transformers are used on-board vessels or dock-side as part of marina power distribution systems. The isolation transformers totally isolate the earth-bonded shore AC power from on-board electrical systems and greatly reduce the risk of shock caused by defective electrical systems, and largely eliminate corrosion of metal parts caused by stray AC current. Problems with the AC supply may be caused by insulation breakdown, immersed wiring, incorrect wiring or equipment failure. If the 3rd (green) ground wire is connected to the onboard bonding circuit, corrosion, excessive erosion of zinc electrodes and shock due to stray current may result. In addition corroded wiring in the shore installation may send considerable voltages down the ground wire without tripping the AC circuit breaker causing damage to onboard electronics.

t                                  Stainless Steel or           Light Gray Powder Coated Enclosures

Our five standard design marine isolation transformers can be installed in either light gray powder coated or stainless steel enclosures.

 

 

 

 

                         

 

                   Light Gray Powder Coated Enclosure

 

Product Specifications

Voltages  (VAC)    Frequency  VA rating     Enclosure Dimensions          Weight                  Powder    Stainless
Input       Output          Hz            VA               mm            inch                 lbs             Kg      Coated     Steel

120            120                    60            2,400               250x300x150      10x12x6                    38             17.2           $610            $670

120/240    120               50/60            3,600              300x400x150     12x16x6                     50             22.7           $730             $820

240/120    240               50/60           6,000               300x400x150     12x16x6                     75              34.0          $945          $1,035

240/120    240               50/60           9,000               400x500x150     16x20x6                     100            45.3          $1,070       $1,220

240/120    240                50/60        12,000              400x500x 200    16x20x8                     150             68.0          $1,476        $1,626

 

Advantages of Toroidal Isolation Transformers

The advantages of a toroidal transformer allow the stainless steel enclosure to be much smaller than when a conventional stacked lamination type transformer is used. Smaller dimensions also mean much lower total weight of the enclosed isolation transformer.

Both features are certainly of paramount importance onboard vessels of any size. Click here to read more about the unique features of our toroidal isolation and power transformers.

Isolation Transformer Safety Standard Certifications 
UL 60601.1, CSA C22.2 No 601.1-M90 (1990), EN61558-1, IEC60601-1, CE Marking
Medical Safety Standard with maximum leakage current of 100 to 300 microamperes depending on the power rating of the transformer.

Enclosure Specifications
NEMA 4X  style, 14 gauge light gray powder coated or stainless steel water tight enclosure with hinged and lockable door. Input and output wires are terminated through sealed stress relief cable glands at the bottom of enclosures to a terminal block inside the enclosure.

 

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