Name Type Values (Range) Unit DescriptionI_ANGL_B1_B2 FLOAT32 -180.00...180.00 deg Current phase angle diffbetween winding 1 and 2,phase BI_ANGL_C1_C2 FLOAT32 -180.00...180.00 deg Current phase angle diffbetween winding 1 and 2,phase CI_5H_RAT_A FLOAT32 0.00...1.00 Differential current fifthharmonic ratio, phase AI_5H_RAT_B FLOAT32 0.00...1.00 Differential current fifthharmonic ratio, phase BI_5H_RAT_C FLOAT32 0.00...1.00 Differential current fifthharmonic ratio, phase CTR2PTDF Enum 1=on2=blocked3=test4=test/blocked5=offStatusIL1-diff:1 FLOAT32 0.00...80.00 Measured differentialcurrent amplitude phaseIL1IL2-diff:1 FLOAT32 0.00...80.00 Measured differentialcurrent amplitude phaseIL2IL3-diff:1 FLOAT32 0.00...80.00 Measured differentialcurrent amplitude phaseIL3IL1-bias:1 FLOAT32 0.00...80.00 Measured bias currentamplitude phase IL1IL2-bias:1 FLOAT32 0.00...80.00 Measured bias currentamplitude phase IL2IL3-bias:1 FLOAT32 0.00...80.00 Measured bias currentamplitude phase IL34.3.2.11 Technical dataTable 589:TR2PTDF Technical dataCharacteristic ValueOperation accuracy Depending on the frequency of the measuredcurrent: fn ±2 Hz±3.0% of the set value or ±0.002 × InOperate time1)2) Minimum Typical MaximumLow stageHigh stage31 ms15 ms35 ms17 ms40 ms20 msReset time <40 msReset ratio Typically 0.96Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5, …1) Current before fault = 0.0 × In, fn = 50 Hz. Injected differential current = 2.0 × set operation value2) Measured with static power output. fn = 50 Hz1MRS759142 C Section 4Protection functionsREX640 627Technical Manual
