Sepam - HV/MV Protection and control units (ENG) - Trinet

Temperature monitoring by RTD protectionANSI code 49T - 38function n° F46X for RTD monitoring X is the RTD number 1 ≤ X ≤ 6F47Y for additional RTD monitoring Y is the RTD number 1 ≤ Y ≤ 6Equipmentc 500 ohm multitour potentiometerc ohmmetersc chronometerc documentationWiringc B11 diagramc protective relays:F46X/1, F47X/1 for set point 1F46X/2, F47X/2 for set point 2F46X/3, F47X/3 for RTD faultTestc read the section entitled measurement and testingmethod12B*//* ****ARTD 1ProcedureAccording to the channel to be tested, temporarily strap the other RTD inputs.c protection parameter setting: RTD XTesting of temperature set pointc parameter settingv set set point 1 Ts1 of channel X to the desired temperaturev set set point Ts2 of channel X to the desired temperaturec testv preset the variable resistor to about 100Ωv press reset (1)v gradually increase the resistance (according to temperative/resistance table)v the output relay which corresponds to set point 1 will pick up after a maximum of3 s when the resistance value reaches ts1v same for set point 2v monitor the temperature evolution in degrees Celsius of the channel on thedisplay unit (Wh/ °C key) or pocket terminal and the increase in resistance on theohmmeter.Testing of off-limit zonesc wire cutv remove the wire from the channel being testedv or simulate a temperature greater than 330°c probe shortedv short (A) or (B)v or simulate a temperature less than -70°Please note:(*//*) or (****) on the display unit or pocket terminal correspond to the diagrambelow.3*****//*********temperature300°RTDfault0°-70°RTDfault100 ΩRTD resistance(1)this function may only be activated if your program logichas been customized.1/48Sepam 2000 - Testing