ine & other rugged environments
Base Station Power
Industrial Controls
DC/DC Converters
VTC140/240 Series D C/DC Converters
• Ultra-Quiet
• Economical
• Rugged & Reliable
The VTC140 and VTC240 Voltage Converters are variable duty cycle
switching power supplies incorporating state of the art switchmode
technology for unmatched efficiency and ultra-quiet operation.
Multiple stages of filtering reduce radiated or conducted noise to very
low levels. They can be run from a 24 VDC or 28 VDC battery system.
Safety features include reverse input protection, current limiting, and
output overvoltage crowbar.
We are confident that you will get many years of reliable service from
these Voltage Converters.
• Mar
• Automotive / RV
• Solar / Alternative Power Systems
• Oil Patch
•
(Radio & Telecommu nications)
•
(OEM Applications)
• Field Work / Construction Sites
• Security Systems
• Most 12V Equipment
• Input voltage range allows
• Reverse input protection
• Rugged Design suited for
• High tolerance for shock and
• Ultra-quiet low EMI operation
• Short circuit protection
operation from 24 or 28 volt
batteries
Mobile Environments
vibration
• Output over-voltage
crowbar
• Run 12 volt electronics
from 24 volt systems
CD or VHF Radios to 100
Watts, GPS receivers,
Autopilots, Sound
equipment, 12V lighting
systems, etc.
• Easily Mounted
• 3 year parts and labour
warranty
Operating Temp.
Range
0° - 40°C @ maximum output
Derate Linearly 2.5% per °C from 40°C
(non-condensing) with optional conformal coating
Audible Noise
Any Input or Output to Case 500 VDC
Input Volts (DC)
20 – 35 20 – 35
Input Amps (max)
11.6 17.8
Input Fuse (MDA)
12 20
Noise on Input
< 10 mV
Output Nominal (op)
12
Output Volts (DC)
13.8 ± 0.1
Output Amps
Output Crowbar
16.0 ± 0.5V
Output Ripple & Noise
< 10 mV
Transient Response
< 1V for 50% Surge
Regulation (Line & Load)
< +/- 0.5%
Peak 20% for 5 min maximum
Continuous 100% for 24 hours per day
Efficiency
Length
7.9 in / 20.1 cm
Width
4.0 in / 10.2 cm
Height
Material
Marine Grade Aluminium
Finish
Black Anodize / Powder Epoxy Coat
Fastenings
All 18-8 Stainless Steel
3.0 lb / 3.5 lb /
Connections
Four contact output terminals
Warranty
3 years
Available From:
Model Number VTC140-24-12 VTC240-24-12
12 cont. / 15 peak 20 cont. / 23 peak
Duty Cycle
> 88% @ Maximum Output
Humidity
Isolation
0 - 95°C Relative Humidity
NONE Ødb @ 3 ft
Input to Output – Common Negative
2.4 in / 6.1 cm
Weight
1.4 kg 1.6 kg
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