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IM-DB 15 RS SeriesDATA PROTOCOL PROTECTIONIEC category / EN type: C1/C2/C3 (IEC 61643-21)Design:In-line moduleMode of protection:Longitudinal, TransverseNumber of protected pairs: 2 (4 lines)Coarse Protection:2 x 3 terminal GDT,1 x 2 terminal GDTNom. Operating Voltage U n:5VDCMax. Operating Voltage U c:6VDCSeries Resistance:1.7 - 1.9Ω per lineFreq:< 35MHzSurge Discharge Ratings: I n: 10kA 8/20µs, I max: 20kA 8/20µsSeries load current:500mAEnclosure:Extruded aluminiumTermination:Db15 Male - DB15 FemaleThe IM-DB15 series has been developed to protect 2 pair data transmission circuits using the RS 422, V.11 andX.12 protocols.The DB15, in-line package, comprises a circuit of two balanced pairs with equipotential equalization betweenthem. Equipotential equalization is also provided between signal ground and protective ground to avoid equipmentdamage from ground 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. Thermal protection is provided to reducethe hazards of thermal runaway should there be an inadvertent mains incursion fault.Technical characteristicsTypeIM-DB 15 RSIM-DB 15 RS (F-LINE)Protection constructionNominal operating voltageMax. continuous operating voltageRated spark overvoltageU nU c(2, 9, 4, 11 - 8, SG)(2 - 9 and 4-11)(2, 9, 4, 11 - 1, PG)I LnRated operating current at 25oCNominal discharge current (8/20µs)Residual voltage at 5 kA (8/20µs)I(line-line)Response time of overvoltage protection t AThermal protectionInsulation resistance of the protectionSerial resistanceRTransverse capacitanceCLimit frequencyf GConnectorOperating temperatureDegree of protectionHousing materialOrdering codeProtective module5V DC6V DC6.5V - 8.5V6.5V - 8.5V78V - 116V500mA20kA< 20V< 1ns (2, 9, 4, 11 - 8, SG)Thermo-clip in lines 2, 9, 4 and 116kΩ1.7 - 1.9Ω< 30nF35MhzDB 15 (M-LINE)DB 15 (F-LINE)-40oC … +80oCIP 20Al127 517 127 516Dimensional drawingsConnection diagram552GDTTCRBD,224100103Legend:TCGDTRBDPGSG2324thermo-clipgas discharge tuberesistorbi-directional TVS diodeprotective groundingsignal grounding9411SG, 8PG, 1TCGDTRRRBDBD,9,4,11,SG, 8,PG, 1www.iskrazascite.si51