Návod na instalaci omezovačů nízkého napětí ALVL

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Vydal: ACER VOLTAGE s.r.o.

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The connecting conductors can made with a circular section. They are used effectively protect persons, who may come into contact with these parts during lightning strikes case a defect the traction power line. 3. Check the limiters are not mechanically damaged regular intervals.com .GENERALRULES FORLIMITERCONNECTION Only the authorized person with an appropriate certification according ČSN EN 50110-1 ed. During assembly necessary respect the principles occupational safety and health. soon as the overvoltage condition ends, the thyristors cut off the current flow and the original condition restored. can perform the installation.com In Hradec Kralove 23. the spot you can perform a complete check the voltage limiter by means insulation testing device such as for instance Megger MIT 1025 Fluke 1555. Especially after extreme weather conditions i.o. FIELD APPLICATION AND PLACE ALVL and ALVL 120 low voltage limiters, recoverable VLD 2. 2.2022 ALVL* ACER VOLTAGE s.acervoltage. ALVL consists of MOV varistors, high-power thyristors and electronic components (differential delay element), which within about msec can activate both in-built high-power thyristors.. During the process the standards must be followed (ČSN 50526-3. The housing made silicone caoutchouc which has great resistance surface creepage currents and electric arc. Also check they are not excessively covered by dirt.2. Functional check ALVL Overload the ALVL limiters may lead to a fault one even both thyristors. The ALVL limiters are maintenance free, have high insulation resistance value (kW) and high protection capability. Based varistor polarity, the corresponding thyristor being activated and the current flowing through the activated varistor, now starts flow through the thyristor. The limiter has installed directly between the elements the protected structures (using two bolts M12) the event its activation has occurred desired equipotential between them. is therefore recommended test the ALVL in regular intervals.Instructions for installing of low-voltage limiters ALVL 60 ALVL 120 1. CHARACTERISTICS PRODUCT AND BASIC PROPERTIES If overvoltage occurs for longer period of time (milliseconds hours) the thyristors fire limit touch voltage value. case of a failure due connection between live part of traction power supply system and the conductive part accidentally connected to the return circuit, the limiter protects against impermissible touch voltage becoming conductive and causing cut-off the current flow. 4. The limiter designed way enabling transmitting high temperatures rising inside the equipment into the aluminium structure. Bratri Stefanu 1170 Hradec Kralove 500 03 Czech Republic tel. Such activation corresponds the voltage drop across the varistor..e.: +420 491 618 571 info@acervoltage. According 50122-1:2011 this type of limiter recommended mainly for the connection between the protected part and return circuit the overhead line zones (or pantograph zones) that may contact with the conductors damaged current collector, then the support structures of pylons which can become live due an insulation failure. Recommended mounting position vertical bracket up.acervoltage.. Before you can perform the control measurement you must disconnect the low voltage limiter. Minimum cross-connecting wire (Cu) mm2 , recommended cross section mm2 .com www. Type Non-triggering voltage UW Nominal triggering voltage US ALVL DC ALVL 120 120 DC The Declaration Conformity the product available for download our website www. has hydrophobic properties and shows excellent resistance to weathering, contamination, light well as harsh treatment and mechanical damage.2 class (bi-directional), VLD-O+F type, used primarily traction systems protect against electric shock when touching non-live metal parts of structures power supply systems. storms.r.)