VC3.8S WALLENANTENNAE | Alldatasheet
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An innovative new concept in voltage conversion, with built-in protection for equipment and vehicle electrics. © 24~13.2 volt switch-mode operation e High performance, high reliability e Soft Shutdown fault protection « Isolated and non-isolated versions Switch-mode conversion, with unbeatable protection and lifetime warranty Wallen voltage convertors have been developed specifically to provide high performance and reliability. They feature intelligent monitoring circuitry for “Soft-Shutdown” to completely avoid short-circuit, overload and wiring fault problems ...protecting not only the equipment driven, but also the vehicle wiring and systems. Soft-Shutdown can be important in applications where the voltage convertors might be retro-fitted by people whose level of expertise may be unknown to you. (For details of our quick & easy super- safe installation process, click on the link below.) Wallen voltage convertors will operate over a wider input voltage range and at a lower cranking voltage than rival designs. Different versions are available to support a wide range of applications, typically in vehicles (and particularly for a growing variety of mobile communications). Non-isolated versions are supplied with the unique extra protection of Soft-Shutdown. Our sophisticated Isolated versions do not normally require Soft-Shutdown (but this can be added to special order) and are thus ideal for price- sensitive applications such as volume manufacturing. All versions are highly efficient and extremely compact ...and all offer protection against overload, reverse polarity and short circuits. Intelligent Monitoring Circuitry If a short circuit Wallen Voltage Convertors are available or voltage overload occurs during operation, in isolated versions for use on isolated- Wallen voltage convertors are designed to shut return vehicles, such as petro-chemical down and send only low current to the output tankers. | side. These convertors are designed to recover etformance data for nonsclated versions when either the input is disconnected (and eer subsequently reconnected); or the offending Super-safe installation process load is removed, the problem rectified and that load reconnected. Our intelligent monitoring circuitry prevents fuses being blown, which can happen with other types of convertor that could threaten connected equipment (even equipment that has a protection diode). If a fault condition occurs, the Wallen intelligent shut-down circuit switches in so fast that the protective fuse on the output side of the convertor will not blow. Furthermore, Wallen convertors will continue to run at maximum current all day if there is no fault ...and due to their highly-specified design, these convertors are able to provide continued operation even at 20% overload for extended periods.
Wallen Antennae Products Page | of 2 Wallen Voltage Convertors Performance data for non-isolated versions VC3.8S VC6.8S vc10S Type Switch mode Switch mode Switch mode yP' Non-isolated Non-isolated Non-isolated Input 15 - 38V DC 15 - 38V DC 15 - 38V DC Output 13.2V DC 13.2V DC 13.2V DC Constant current (100% duty cycle) 3.8A 6.8A 10 Intermittent current 7A 1A 14A (30% duty cycle) Quiescent current <15mA <15mA <15mA Oscillator 60KHz 60KHz 60KHz frequency Transient voltage Level 3 @+ 2kV Level3 @+2kV_ Level 3 @ + 2kV Ryetioad Overload Overload 5 ‘everse Polarity Reverse Polarity Reverse Polarity Protection Short Circuit Short Circuit Short Circuit Soft-Shutdown Soft-Shutdown — Soft-Shutdown Efficiency (approx) 91% 90% 89% Connection 4x spade 4x spade 4x spade Cofour Black/gold Black/gold Black/gold Dimensions (mm) 69x 74x 31 79x 74x31 89x 74x31 Weight 138g + fixings 138g + fixings 138g + fixings Warranty* Lifetime Lifetime Lifetime * Against manufacturing | Ta Smear | defects fee sae \\ fie | t ri bag : 7 Specifications are approximate and are subject to change without prior : : notification | Introduction to Wallen Voltage Convertors Performance data for isolated versions Super-safe installation process Wallen Antennae Tel: +44 (91842 5R28A4 Fax +44 (0)1842 59N796 http://www.wallen-antennae.co.uk/products/voltageperf1.htm 21/08/03
Quick & easy super-safe installation process 6 Sg 6 6 yvomen NAP i no ar j PS oF 7 f [ j 1S oBH M4 CLICK jo Wallen Voltage Convertors are very easy to install. The convertor should be suitably sited. Use two self-drilling screws to fix the bracket, then click the convertor into place. Just connect the positive and negative leads to the required equipment. ..then connect the vehicle (supply) to the negative and positive input terminals. Ensure that in-line fuses are used on both sides of the convertor ...and it's ready! Super-safe installation Wallen “S" voltage convertors use intelligent monitoring circuitry as a safety feature designed into the convertor, to provide soft and non- damaging shutdown. Two LEDs on the front interconnection panel indicate the operating status of the voltage covertor: If the green LED is lit, the convertor is operating normally. If neither the green nor the red LED is lit, there is a 24V supply problem If the red LED is lit, then there is a problem on the output side ...probably a short circuit or a wrong-polarity connection. Introduction to Wallen Voltage Convertors Performance data for non-isolated versions Performance data for isolated versions