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Frankonia flicker & harmonics emv test system fht 25
Frankonia Flicker & Harmonics EMV TEST SYSTEM FHT 25
PC-aided Measuring and Testing System for Testing Harmonics and Flicker According to EN 61000-3-2/3
The system FHT-25 permits to perform measurements of constant
and variable harmonic currents, conforming to the Standard EN
61000-3-2 (IEC 61000-3-2), as well as of voltage fluctuations
and flicker, conforming to EN 61000-3-3 (IEC 61000-3-3). The
measurement of harmonic currents may be carried out without
using an additional external AC voltage source, provided that the
inherent low-voltage mains fulfills the requirements defined in the
Standard. Whether this is the case or not, can be determined in
a simple and precise manner by means of the function mains
analysis which can be recalled in the software.
As regards the measurement of voltage fluctuations and flicker
conforming to standards, an external zero-sequence field impedance
AC voltage source is imperative since measuring faults
may result from measurements on the mains supply system. To be
still able to perform reliable pre-compliance testing without AC
voltage source, the FHT-25 is equipped with a 16A flicker impedance
(approx.0.4 ) which can be connected, and by which any
measuring faults can be largely avoided. For tests which are in
absolute conformity with the standards, we offer a broad variety
of adequate AC voltage sources.
Monitor outputs (BNC): EUT voltage (Up/100)
Voltage via flicker impedance (UF/5)
Generator output (BNC): 0 to 10 V AC, 10 to 2.5kHz (FHT-25)
0 to 10 V AC, 10 to 12.5kHz (FHT-125)
Digital trigger input (TTL) 1 piece
Input for external current clamp 1 piece
EUT current / voltage < 0.1% (25 C)
Nominal supply voltage (recovery time = 27 s) < 0.5 %
(with internal current transformer)
Harmonics filter f (-3dB) = 3Hz
Volume of delivery: FHT-25 basic equipment
mains cable for operating voltage and
Optionally: PCI-DAQ Card for signal generation and
measurement up to 12.5kHz (FHT-125)
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