for Measurements vs. commonly used Standards as EN, CISPR, FCC, ETS, VCCI and VDE, 9kHz to 30MHz frequency range, Up to 800Aamp capacity, Continuous rating, DC Measurements, DC to 63Hz supplies, manual and remote control,…
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ARTIFICIAL MAINS NETWORK has to provide: − Specified impedance over the working frequency range. Since the INPUT IMPEDANCE of the MEASURING RECEIVER is 50�6�8, the SOURCE IMPEDANCE (output of the LISN), must also be 50�6�8, over the specified frequency range. − Sufficient isolation to spurious signals arising from the mains supply (such signals should be at least 10dB lower than the measurementlevel, at the measuring receiver), and also to prevent the mains voltage from being applied tothe measuring receiver. The above must hold for each of the conductors of the mains. The LISN also incorporate a switch to enable the connection of the measuring receiver to the conductor under test, providing the correct termination to the other mains conductors. When a disturbance output terminal is not connected tothe measuring receiver, it shall be terminated by 50�6�8.
MODELS LISN including switching operation measurement (power meter) for EN55014-1 − LS16C: 16A single phase − LT 32C: 32A single/three phase LISN without power meter − LT 100: 100A single/three phase − 2V-16: 16A single phase − 2V-10: 10A, 120Vdc − 2V-100/200: 100A single phase − 4V-100/200: 100A three phase − 4V-250-70VDC: 250A, 70Vdc three phase − Custom modelsare available, up to 800A GENERAL The AFJ LISNshave been developed for measurement of line-bound interference's according to CISPR 16-1. The construction uses air coilsin the current path in order to avoid saturation effects with high current strengths. The continuous high current load-bearing capacity is ensured by the use of large wire cross-sections for the coils. For a short period (10 minutes), twice as high currents are admissible. The compact form of construction, despite the high current-bearing capacity, makes easy use of the AFJ LISNs for the measurement of high currents directly at the piece of use of the consumer possible. In this way, measurements of mains-borne interference's can be carried out under conditions corresponding to practice.
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