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

TemperatureOperationThis function gives the temperature value measuredby RTDs (Pt100 platinum probe, 100 Ω at 0 °C)in accordance with the IEC 751 and DIN 43760standards.Each RTD channel gives one measurement:tx = RTD temperature.The function also indicates RTD faults(RTD disconnected or shorted):c *//* in the case of a disconnected RTD(or a temperature greater than 302 °C ±27 °C),c **** in the case of a shorted RTD (or a temperatureless than -70 °C ±10 °C).ReadoutThe measurements may be accessed via:c the display unit by pressing the Wh key,c the pocket terminal, metering menu,temperature and add. temperature heading.c the communication link.Characteristicsrange -50°C to 250°Caccuracy±1°Cresolution 1°Crefresh intervalAccuracy derating according to wiringc Connection in 3-wire mode: the error ∆t isproportional to the length of the wire and inverselyproportional to the wire cross-section:I (km)∆t (°C) = 2 xS (mm 2 )v ±2.1°C/km for a cross-section of 0.93 mm 2 ,v ±1°C/km for a cross-section of 1.92 mm 2 ,c Connection in 2-wire mode: wiring resistancecompensation is not ensured in this mode. Thiscreates the following error:I (km)∆t (°C) = 100 xS (mm 2 )3 seconds (typical)SensorsThese measurements are related to the RTDsconnected to the following connectors:Sepam connector connectorS26* LS 3A —S36* LS — 8AS36* KZ — 8AS36* SS 3A 8AS36* SR 3A —S36* ZR 3A —S36TS — 8AS46 ZR 3A —S46 ZM 3A —* or S35, S25 for earlier versions.1/12 Metering functions