Iskra Zascite

VM-RSDATA PROTOCOL PROTECTIONIEC category / EN type: C1/C2/C3 (IEC 61643-21)Design:16 terminal compact moduleMode of protection:Longitudinal, TransverseNumber of protected pairs: 2 (4 lines)Coarse Protection:2 x 3 terminal GDT,2 x 2 terminal GDTNom. Operating Voltage U n:5 VDCMax. Operating Voltage U c:6 VDCSeries Resistance:1.7 - 1.9Ω per lineFreq:< 1.5MHzSurge Discharge Ratings: I n: 10kA 8/20µs, I max: 20kA 8/20µsSeries load current:500mAEnclosure:DIN 43880 2TE, DIN rail mountTerminals:Multi-strand to 2 x 2.5 mm 2The VM-RS series has been developed to protect 2 pair data transmission circuits using the RS 485, RS 422 andV11 protocol.The circuit consists of two balanced pairs with equipotential equalization between them. Equipotentialequalization is also provided between signal ground and protective ground to avoid equipment damage fromground potential rises during surge activity.Coarse protection is provided by a three terminal gas discharge tube while fine protection is provided using a highspeed silicon stage which provides both common (longitudinal) mode protection from each line to protectiveground, and differential (transverse) mode protection between each pair.Care is taken to ensure coordination between these two stages without voltage or surge current blind spotsoccurring.Thermal protection is provided to reduce the hazards of thermal runaway should there be an inadvertent mainsincursion fault.Technical characteristicsTypeProtection constructionNumber of protected pairsNominal operating voltageMax. continuous operating voltageRated spark overvoltageRated operating current at 25oCNominal discharge current (8/20µs) IResidual voltage at 5 kA (8/20µs) (line-line)Response time of overvoltage protection t AThermal protectionInsulation resistance of the protectionSerial resistanceRTransverse capacitanceCLimit frequencyf GTerminal cross sectionOperating temperatureDegree of protectionHousing materialDimensions DIN 43880Mounting EN 60715Ordering codeU nU c(5, 6, 7 and 8 - 4, SG)(5-6 and 7-8)(5, 6, 7 and 8 - 2, PG)I LnVM-RS 485Protective module2 (4 conductors)5V DC6V DC6.5V - 8.5V6.5V - 8.5V78V - 116V500mA20kA20V< 1ns (5, 6, 7, 8 - SG))Thermo-clip in lines 5, 6, 7and 86kΩ1.7 - 1.9Ω< 2nF> 1MHzMulti-strand to 2 x 2.5mm 2-40oC … +80oCIP 20Thermoplastic; gray, extinguishing degree V-O2TEon a 35mm DIN raill703 80148www.iskrazascite.si