Frequency Protection Relay with df/dt : MRF2

Range

• Rated data : Nominal voltage UN : 100 V, 230 V, 400 V, Nominal frequency fN : 50/60 Hz, Operating range: 0.05…2.0 x UN
• Power consumption : <1 VA at UN
• Thermal rating : continuously 2 x UN
• Dropout to pickup ratio : f>: > 99.99 % f<: < 100.02 %
• Dropout time : 30 ms
• Time lag error class index E : ± 10 ms
• Minimum operating time : 60 ms
• allowed interruption of the auxiliary supply without influence to the function of the device : 50 ms
• Influences on frequency measuring : Aux. voltage : in the range 0.8 < UH / UHN < 1.2 no additional influences to be measured
• Frequency : no influences
• Influences on delay time : no additional influences to be measured