T&R 100ADM-F Current Filter Unit

The T&R 100ADM-F 100A waveform filter unit reduces the level of current harmonics when testing electro-mechanical protection relays. It is designed for use with the T&R range of secondary injection test sets.All electromechanical protection relays have iron cores that saturate and distort the test current under high overload test conditions. This distortion causes significant errors in the measured trip time of these relays during testing. Distortion of the waveform can be a particular problem with disc induction type over-current and sensitive earth fault relays.The 100ADM-F has nine current ranges covering 0.25A to 100A and is supplied in an insulated case complete with protective cover and carrying strap.FEATURESForces test current to a sinusoid. Greatly improves timing accuracy when testing. electromechanical relays. Wide range of test currents. High overload capability. 50/60Hz operating frequency. High efficiency. Current monitoring output.Timing Errors With & Without A FilterCurrentTHDTrip TimeErrorNo Filter5 A34.5%1.54s18.5%With Filter5 A6.12%1.30s0%T&R 100ADM-F SpecificationsCurrent Ranges and RatingsRangeContinuous Rating5 Min On/15 Min Off0.25 A0.125 A0.25 A0.5 A0.25 A0.5 A1 A0.5 A1 A2.5 A1.25 A2.5 A5 A2.5 A5 A10 A5 A10 A25 A12.5 A25 A50 A25 A50 A100 A5 A100 AFrequencyRange50/60 Hz selectable.Range SelectionLow RangeSelected by switch (0.25 to 50 A).Highest Current RangeSelected by terminal (100 A).Current MonitorMonitoring Output0 - 100 mA corresponding to rated current.Filter Unit ImpedanceRangeImpedance50Hz150 Hz250 Hz350 Hz0.25 A880 Ω17.5 kΩ30.4 kΩ41.5 kΩ0.5 A220 Ω4.38 kΩ7.65 kΩ10.3 kΩ1 A47.7 Ω950 Ω1.65 kΩ2.25 kΩ2.5 A7.8 Ω150 Ω250 Ω360 Ω5 A1.94 Ω38 Ω65 Ω90 Ω10 A510 mΩ9.5 Ω16.5 Ω22.5 Ω25 A85 mΩ1.5 Ω2.5 Ω3.6 Ω50 A22 mΩ380 mΩ650 mΩ900 mΩ100 A5.5 mΩ95 mΩ165 mΩ225 mΩGeneral SpecificationsStorage Temperature-20 to 60°C.Operating Temperature0 to 45°C.Dimensions340 x 230 x 330 mm.Weight15.6 kg.T&R 100ADM-F warrantyOne-year.

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