Samlex America VTC305 User Manual
DC to DC
Step Up
Converter
Model:
VTC305
Owner's
Manual
Please read this
manual before
operating your
converter
INTRODUCTION
Step up a 12 VDC battery to between 13.5 and 17.0 or 24.0 and 27.5 VDC in 0.5
VDC increments (via 3 position DIP switch), or stabilize a 12 or 24 VDC power system. Safety features include reverse input protection, low input voltage ala rm, low
output voltage alarm, over temperature shutdown and alarm, and output over voltage
crowbar. If the input voltage exceeds the regulated output voltage , t he unit simply
passes the voltage through with full LC filtering and a single schottky diode drop (0.5
VDC or less). Optional features include a dry contact alarm relay output, and remote
panel monitoring with On/Off c ontrol.
Applications include temporarily brighteni ng 12 volt headlig hts or work lights, increasing voltage into an automotive or marine ignition system for hott er spark and/or prevention of failures due to voltage drop during engine start, stabi lizi ng 12 and 24 VDC
power systems in marine, automotive or aeronautical environments and more.
SPECIFICATIONS
Model
Input Voltage
Output Voltage
Current Limit
Output Crowbar
Input Fuse
Low Input Voltage
Alarm
Low Output Voltage
Alarm
Noise on Input
Noise on Output
Transient Resp.
Efficiency
Temp. Range
Isolation
Length
Width
Height
Clearance
Material
Finish
Fastenings
Weight
Specifications subject to change without notice.
VTC305-12-12 VTC305-12-24
10.5 - 18 VDC 10.5 - 28 VDC
Input – 1V or 13.5 - 17.0 VDC
Whichever is greater
30 Amps In
16.0 ± 0.5 V 32.0 ± 1.0 V
AGC 20 x 2 Amp
10.5 VDC
Programmmed Output Volt-
age minus 2.5 VDC
< 25 milli-volts
< 25 milli-volts
< 1V for 15A Surge
> 90 % @ maximum output
0 - 40 deg° C @ maximum
output
Any Input or Output to Case
500VDC
Input to Output Common
Negative
9.1 in / 23.1 cm
7.8 in / 19.8 cm
2.5 in / 6.4 cm
1 Inch (2.5 cm) all around
Marine Grade Aluminum
Black Powder Epoxy
18-8 Stainless
4.0 lb / 1.8 kg.
Input – 1V or 24.0 - 27.5 VDC
Whichever is greater
1.
IMPORTANT SA FETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS — This manual contains important s afety and operat ing
instructions for the converter.
ALL CONVERTERS
1) CAUTION — To reduce risk of injury, charge only lead acid or sealed gel cell
type rechargeable batteries. Other types of batteries may burst c aus i ng personal injury and damage.
2) Do not expose converter to rain or snow.
3) Use of an attachment not recommended or sold by the converter manuf acturer may result in a risk of fire, electric shock, or injury to persons.
4) Do not disassemble converter; take it to a qualified serviceman when service
or repair is required. Incorrect reassembly may result in a risk of electric shock
or fire.
5) To reduce risk of electric shock, disconnect conver ter f rom batteries or other
DC supply before attempting any maintenance or cleaning. Turning off controls
will not reduce this risk.
6) CONVERTER LOCATION
i) Never place converter directly above battery; gases from battery will
corrode and damage converter.
ii) Never allow battery acid to drip on converter when reading gravity or
filling battery.
7) DC CONNECTION PRECAUTIONS
i) Connect and disconnect DC output connections only after setting
converter switch to off position.
Samlex America does not recommend the use of the VTC305 Series Voltage Converters in life support applications where failure or malfunction of this prod uct can be reasonably expected to cause failure of the life support device or to significantly affect its
safety or effectiveness. Samlex America does not recommend the use of any of its
products in direct patient care.
Examples of devices considered to be life support devices are neonata l oxygen anal yzers, nerve stimulators (whether used for anesthesia, pain relief, or other purposes), autotransfusion devices, blood pumps, defibrillators, arrhythmia detectors and alarms, pacemakers, hemodialysis systems, peritonea l dialysis syst ems, neo nat al ventila t or inc ubators, ventilators for both adults and infants, anesthesia vent ilat o rs, an d infusion pu mps as
well as any other devices designated as "critical" by the U.S. FDA.
2.
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