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

General characteristicsEffects of the environment on the equipment (cont’d)Sensitivity to radiated interferenceAim: to test that the device does not operate in an unwanted manner whensubjected to an electromagnetic field of radiation (especially transmitters/receivers).Reference documents: Standards: IEC 60255-22-3, IEC 61000-4-3Severity: intensity of field: 30V/m not modulated10V/m amplitude-modulatedSensitivity to electrostatic dischargesAim: to test that the device does not operate in an unwanted manner whensubjected to electrostatic discharge (operator contact or nearby objets).Reference documents:Standards: IEC 60255-22-2Severity: generator load voltage: 8 kV in air6 kV on contactTesting in a simulated MV environmentAim: to check that there is no nuisance tripping during MV switchgear operations.Composition of tests: device installed in a cubicle shunt-wired to a high voltagegenerator.Severity: generator voltage: 30 kV / 50Hz.Number of operations: 30 closing operations.Climatic and mechanical robustness testsForeword: Test sequencec the same device undergoes all the tests.c the sequential testing order complies with the recommendationsin the IEC 60068-1 standard (as testing order maximizes the significanceof the results, each test potentially reveals deterioration caused by previous tests).ColdAim: to test the device's ability to be used at low temperatures.Reference documents:Standards: IEC 60068-2-1Severity:Ad test, without forced air circulation:c device in operation,c temperature: 0 ˚C,c duration: 16 hours,c recovery: 1 hour, device energized.N.B. The pocket terminal is not subjected to the tests.Dry heatAim: to test the device's ability to be used at high temperatures.Reference documents:Standards: IEC 60068-2-2Severity:Bd test, without forced air circulation:c device in operation,c temperature: 55 ˚C.3/12 Installation - Use - General characteristics - Testing