Unlike any other Power Fail simulator the EM TEST PFS 503N Series represents a real three-phase Power Fail simulator. Not only phase-by-phase testing is possible but any combination of phases and all three phases can be simultaneously tested. Herefore the PFS503N Series is equipped with six individually controlled semiconductor switches. Each switch is electronically short-circuit protected. Additionally the PFS 503N Series is available for nominal currents of up to 100A which is another outstanding and unreached feature for Power Fail testing. The PFS 503N Series offers BNC outputs for individual current monitoring for each phase by means of an oscilloscope. The inrush current can be measured using these BNC outputs. An analog DC signal of 0 to 10V is supplied to drive an external motorised three-phase variac. The PFS 503 can also be used for single phase testing offering a separate DUT output for this purpose.
V3P40xxDS – Tapped autotransformer for testing three-phase dips and interruptions
The tapped autotransformers of the V3P40xxDS series provide the fixed voltage levels as per IEC 61000-4-11 Ed.2:2004 and IEC 61000-4-34. These transformers can easily be configured for both delta connection and star connection to fully cover and comply to the test requirements as per IEC 61000-4-11, Ed.2:2004.
MV3P40xxDS – Motorised variac for three-phase Power Fail tests
A motorised variac is required to set the reduced voltage levels to perform voltage dips as per IEC 61000-4-11 Ed.2:2004 and IEC 61000-4-34. The voltage level is set by means of an analog output signal provided by the Power Fail simulator to any level between 0V and the maximum voltage of the variac. The variac solution also provides capability to perform overvoltage tests.
SVP CL 1700 – Calibration box 1700uF for inrush current verification
SVP CL 100 – Low inductive 100 Ohm carbon calibration load resistor
EM Test PFS 503N Series Datasheet 
