Specifications

m17
SMARTBOOST
™
UNIVERSAL
AC VOLTAGE BOOSTER
The SmartBoost is a universal AC voltage booster designed to increase
incoming AC shore power voltage. When dockside power drops below 208 VAC,
SmartBoost provides a 13% AC voltage boost to any existing 50 Amp transformer.
Designed as a separate boost control unit, SmartBoost may be connected to any
manufacturer’s 12 kVA or 15 kVA (50 Amp) isolation transformer.
Easy to install and use, SmartBoost offers fully automatic operation with manual
1:1 override and features Low Voltage, Boost and Power LED indicators. Terminal
blocks allow for easy customer connections. An optional remote indicator panel (Part #93-SMTBREMOTE-A) permits
monitoring of operational status from any convenient location. 1-year limited manufacturer’s warranty, made in the USA.
Features
• Rugged high-quality construction
• Fully automatic operation with
manual 1:1 override
• Low voltage, boost and power
LED indicators
• Optional remote LED indicator
ISO-BOOSTS
®
WITH SOFTSTART
™
150 175 200 225 250 275
275
250
225
200
175
150
INPUT VOLTAGE (VAC)
OUTPUT VOLTAGE (VAC)
Low Volt
light on
Low Volt
starts to
blink
Boost
light on
Out of
Boost
Output
turned off,
voltage
too high
On the “NO BOOST” curve,
output amperage is 50 amps
On “UPPER BOOST”
curve, output amperage
is 42.5 amps max
Only possible when
in bypass mode
ISO-BOOST VOLTAGE CHART
Charles Iso-Boost units combine all of the functions/features of an isolation
transformer with a voltage sensing and switching circuit. The circuit provides
the ability to automatically increase the line voltage on your boat. As well as
completely isolating input power (shore) from output power (boat) protecting
onboard systems and equipment, the Iso-Boost increases the boat’s voltage
when it falls below a preset threshold due to low shoreline voltage. The
Iso-Boost offers the reliability and assurance that adequate voltage is supplied
to all of the onboard AC equipment. Units include built-in SoftStart technology.
1-year warranty, made in the USA.
Reasons to boost voltage
Many marinas fluctuate dockside voltages. In fact, many marinas are installing 120/208 volt power rather than
120/240 volts. Though the marina may offer adequate power, if your boat is at the end of a long dock run, or
if other boats along that dock run are drawing large amounts of current (i.e. running a lot of equipment) your
boat may not be receiving the voltage it needs. Onboard equipment with motors such as air conditioners,
require a full 240 volts to
properly operate. If your
boat is not receiving enough
voltage, items that are
sensitive to low voltage
may not operate properly.
Effect of using an Iso-Boost
When the Iso-Boost is in
the boost mode, you will
sacrifice amps to increase
voltage. The voltage chart
illustrates volts/amps of
Iso-Boost.
60Hz
Installation Kits
97-ISOKIT12-A
Install Kit for 93-ISOBOOST50-B
97-ISOKIT24-A
Install Kit for 93-ISOBOOST100-B
Kits include:
• 10ft.of appropriate cable and the
appropriate terminals
• A circuit breaker and enclosure for the
breaker if needed (for US 240VAC service)
• Appropriate sized Strain Reliefs for
the circuit breaker enclosure
93-SMTBST50-B
Product No.
Dimensions
9”x12.75”x12.75" 50 lbs.
Weight
Max. Input Current Input Voltage Frequency Max. Output Current Output Voltage
50 amps 177-240 VAC 50/60 Hz 50 amps 200-250 VAC
93-ISOBOOST50-B
Product No.
Dimensions
18”x15”x12" 235 lbs.
Weight
Kilovolt Amps (kVA) Input Current Input Voltage Frequency Output Voltage
12 kVA 50 amps 167-255 VAC 50/60 Hz 192-255 VAC
Output Current
42.5/50 amps
93-ISOBOOST100-B 21”x21”x17" 575 lbs.24 kVA 100 amps 167-255 VAC 50/60 Hz 192-255 VAC
85/100 amps
Remote Monitoring Panel with diagnostic LEDs: 93-SMTBREMOTE-A
Remote Monitoring Panel
with diagnostic LEDs:
93-ISOBREMOTE-A