LT–IXFMR36–1
3
Charles Industries, Ltd. All rights reserved. Printed in the United States of America.
INTRODUCING... 3.6 KVA ISOTRANSFORMER
Thank you for purchasing the 3.6 KVA IsoTransformer
! Your IsoTransformer completely isolates input power
from output power providing an improved degree of safety and reducing galvanic current corrosion due to the di-
rect connection to AC shore power.
Warranty/Registration
Before proceeding, complete and mail back the Warranty Registration card.
Manual Purpose
With your personal safety in mind, this manual lists important safety precautions first, then covers installation,
operation, maintenance, troubleshooting, warranty, and customer service information.
APPLICATION
The 3.6 KVA IsoTransformer is a shoreline isolation transformer intended for boats with 30 amp/120 volt service.
Properly installed it will electrically isolate AC shore power from the boat’s AC power system reducing galvanic
current corrosion due to the AC shore power connection.
The boat’s electrical system and grounding conductor are not actually connected to the shoreside system when
you use the 3.6 KVA IsoTransformer as an isolation transformer. Power is transferred from the shoreside electri-
cal system to the boat’s electrical system by magnetic coupling. This means there is no direct electrical connec-
tion between the earth-grounded shore AC power and boat AC power systems. The shore grounding conductor is
connected to a shield that is wound between the primary (shore) and secondary (boat) transformer windings. This
shield assures isolation on the boat by providing a protective layer between primary and secondary windings with-
in the transformer. In the unlikely event of a breakdown within the transformer, the shield can withstand the fault
current of a properly sized shore supply circuit breaker long enough for the breaker to trip. In addition, by ground-
ing one leg of the transformer secondary (X2) on board the boat a “neutral” ground is established for the vessel’s
electrical system. When using the transformer, shoreline polarity is no longer a consideration and a shoreline po-
larity device is not necessary.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
. This manual contains important safety and operating instructions
for the IsoTransformer. Read the entire manual before usage. Also read all instructions and cautions for and
on the IsoTransformer.
Warnings
To avoid serious injury or death from high voltage electrical shock disconnect AC shore power before
opening panel.
WARNING — HIGH VOLTAGE
Primary overcurrent protection and conductor sizing must be in accordance with manufacturer’s
installation instructions.
WARNING — FIRE HAZARD
On board and in-water shock hazard. Transformer must be connected in accordance with
manufacturer’s installation instructions.
WARNING
Do not store equipment on or next to transformer. This unit is designed to operate hot and must have
free air flow to prevent over heating or charring of adjacent material.
WARNING — FIRE HAZARD