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

General characteristicsEffects of the environment on the equipmentAimThese tests check device sensitivity and resistanceto electromagnetic, mechanical, chemical, etc.interference.Reference documents:Standards: IEC 60255-22-xx for determinationof sensitivity limits.Sensitivity to electromagnetic interferenceSensitivity to conducted interference1MHz damped waveAim: to test that the device does not operate in an unwanted manner whensubjected to high frequency transients (switching of auxiliary relays or isolationswitches/circuit breakers).Reference documents: Standards: IEC 60255-22-1Severitycircuitstest voltagecommon mode differential modepower supply 2.5 kV 1 kVlogic inputs 2.5 kV 1 kVanalogic inputs 2.5 kV 1 kV (incl. phase currents)logic outputs 2.5 kV 1 kVFast transient burstsAim: to test device immunity when subjected to rapid, repeated electrical transients(inductive load breaks, relay contact bounces).Reference documents: Stadards: IEC 60255-22-4Severitycircuitstest voltage [coupling]common mode differential modepower supply 4 kV [direct] 4 kV [direct]logic inputs 4 kV [direct] 4 kV [direct]analog inputs 4 kV [direct] 4 kV [direct](incl. phase currents)logic outputs 4 kV [direct] 4 kV [direct]pocket 1 kV [direct] 1 kV [direct]terminal 4 kV [capacitive] 4 kV [capacitive]socketImpulse waveAim: to test the device’s immunity when it is submitted to transients caused bylightning and switching (capacitor bank, short-circuit to earth, etc.).Reference document: Standard: IEC 61000-4-5Severitycircuitstest voltage (test impedance)common mode differential modepower supply 2 kV (42 Ω) 1 kV (42 Ω)logic inputs 2 kV (42 Ω) 1 kV (42 Ω)logic outputs 2 kV (42 Ω) 1 kV (42 Ω)phase current inputs (ECM) 2 kV (42 Ω) 1 kV (42 Ω)earth fault current input 2 kV (42 Ω) 1 kV (42 Ω)CT+CSH 302 A and 30 A 2 kV (2 Ω) N/Aearth fault current inputs on shieldingvoltage inputs 2 kV (42 Ω) 1 kV (42 Ω)RTD input 2 kV (2 Ω) N/Aon shieldingcommunication interface 2 kV (2 Ω) N/Aon shieldingInstallation - Use - General characteristics - Testing3/11