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  • Hefra - About chargers - High-frequency chargers
    chargers The input mains voltage is rectified and then converted into a high operating frequency 50kHz by a high frequency chopping circuit This high frequency input is then passed through a transformer and rectified to the correct DC voltage with only a negligible ripple Because of this high frequency the transformation can be done with a small ferrite transformer This makes HF chargers suitable for all types of lead acid

    Original URL path: http://www.hefra.nl/docs/webshop.asp?act=doc&type=ladersHoogfrequentladers (2016-05-01)
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  • Hefra - About chargers - Microprocessor-controlled battery chargers
    and the voltage they provide when charging a battery This is done in several steps taking into account battery condition and often even ambient temperature thus allowing maximum charge without causing any damage Temperature controlled charging is especially important for gel batteries 1 Testen De accu wordt getest op conditie en ladingstoestand 2 Soft charge Wanneer de accu zo diep ontladen is dat deze geen normale laadspanning accepteert wordt eerst

    Original URL path: http://www.hefra.nl/docs/webshop.asp?act=doc&type=ladersMeertrapsladers (2016-05-01)
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  • Hefra - About chargers - Float charging
    of caravans and boats are aware of this problem as are those who rely on vehicles or applications that are used infrequently Trickle charging or float charging means charging a battery at the same rate as its self discharging rate thus maintaining a full capacity battery The difference between a float charger and a trickle charger is that the float charger has circuitry to prevent overcharging It senses when the

    Original URL path: http://www.hefra.nl/docs/webshop.asp?act=doc&type=ladersDruppelladers (2016-05-01)
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  • Hefra - About chargers - Traction chargers
    an expensive part of any electrically driven vehicle Reliable and efficient charging equipment correctly matched to battery capacity and required recharge times are a basic necessity for operational effectiveness and optimized battery life and performance Two charging technologies can be used to achieve this goal WoWa chargers and HF chargers Conventional WoWa chargers offer a reliable and robust way to charge conventional traction batteries They are cost effective charging systems

    Original URL path: http://www.hefra.nl/docs/webshop.asp?act=doc&type=ladersTractieladers (2016-05-01)
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  • Hefra - About chargers - Hybrid chargers
    Hz Chargers High frequency chargers Microprocessor controlled Float charging Traction chargers Hybrid chargers Supply mode Hybrid chargers Chopper chargers use ferroresonant transformers combined with switching technology at the secondary end This allows for very high charging rates a traction battery can be charged in as little as one hour albeit reducing battery life cycle by 30 This solution enables multi shift operations without spare batteries and battery changing In terms

    Original URL path: http://www.hefra.nl/docs/webshop.asp?act=doc&type=ladersHybrideladers (2016-05-01)
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  • Hefra - About chargers - Supply mode
    Francais You are here Home About chargers Supply mode About chargers Supply mode 50 Hz Chargers High frequency chargers Microprocessor controlled Float charging Traction chargers Hybrid chargers Supply mode Supply mode The charging voltage of a battery charger is of course higher than the nominal voltage of the battery it is designed to charge It is therefore not advisable to use a charger as a power supply However some chargers

    Original URL path: http://www.hefra.nl/docs/webshop.asp?act=doc&type=ladersVoeding (2016-05-01)
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  • Hefra - Testing
    part in a car or other application But because weak batteries aren t noticeable like balding tires or squeaky brakes they are usually replaced only aft er they fail creating inconvenient and possibly dangerous situations The average life of a typical car battery is approximately five years but variables like climate shorter drive cycles traffic congestion and increased electrical power demands of today s vehicles can all negatively impact battery

    Original URL path: http://www.hefra.nl/docs/webshop.asp?act=doc&id=381244 (2016-05-01)
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  • Hefra - Transport - ADR
    Voor accu s gelden de volgende indeling Product Conventionele hybride en calcium accu s VRLA Gel en AGM Accuzuur UN nr 2794 2800 2796 Benaming Batterijen nat gevuld met zure elektrolyt Batterijen nat van het gesloten type Zwavelzuur met ten hoogste 51 zuur of accumulatorvloeistof zuur Klasse 8 bijtende stoffen 8 bijtende stoffen 8 bijtende stoffen Classificatiecode C11 voorwerpen C11 C1 bijtende stoffen zonder bijkomend gevaar Etiketten 8 8 8 Bijzondere bepalingen 295 598 238 295 598 Gelimiteerde hoeveelheden LQ 0 geen vrijstelling 3 4 2 LQO LQ 22 Verpakkingen instructies P801 P801a P003 P801a P001 IBC02 Bijzondere bepalingen In de bijzonder bepalingen wordt aangegeven onder welke voorwaarden accu s niet onder het ADR vallen Mits aan deze voorwaarden wordt voldaan behoeven accu s niet als gevarengoed te worden behandeld Bijzonder bepaling 295 De batterijen hoeven niet afzonderlijk van een opschrift en een gevaarsetiket te zijn voorzien indien de gepalletiseerde lading van het juiste opschrift en gevaarsetiket is voorzien Bijzonder bepaling 598 De volgende batterijen zijn niet onderworpen aan de voorschriften van het ADR Nieuwe batterijen indien Zij zodanig zijn vastgezet dat ze niet kunnen glijden omvallen en beschadigen Van handvatten zijn voorzien behalve indien de batterijen bijvoorbeeld op pallets

    Original URL path: http://www.hefra.nl/docs/webshop.asp?act=doc&id=4749 (2016-05-01)
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