Product Description:
ISN 50561-3 is an ISN-impedance stabilized network product developed by Schwarzbeck from Germany, authorized by Shenzhen EUTTEST agent sales and quotation service, this product is manufactured according to the requirements of EN 50561-3 Appendix B, dedicated to PLC-power line communication equipment.Asymmetrical interference transfer voltageMeasurement, the Schwarzbeck ISN-50561-3 is a measurement network that provides a defined high-frequency impedance at the feeder of the terminal voltage measurement point, which also isolates (decouples) your product from ambient noise on the power line. The device also defines the coupling path between the EuT and the AE.
Technical parameters:
Product Specification Sheet:
“Reminder: swipe tables left and right”Conforms to the requirements of Appendix B of the standard BS EN 50561-3:2016:
The 50561-3 standard specifies in Appendix B what type of ISN should be used to measure the asymmetrical interference voltage of PLC devices as shown below:

ISN required by BS EN 50561-3:2016 Appendix B
The standard also specifies that the differential voltage dividing factor is calculated according to the formula mentioned in EN 55016-1-2. Based on the formula and our ISN structure, 20*log (50/96.3)=5.7 dB, we can measure that the dividing factor of the ISN 50561-3 should be close to 5.7 dB for the EUT-BNC port, as shown in the figure below:

Differential Voltage Coefficient
In addition, Appendix B defines that the values of differential attenuation and common mode attenuation should conform to the following two picture data.

ISN50561-3 Differential attenuation between EUT-AE ports

ISN50561-3 Common mode attenuation between EUT-AE ports
Therefore, the ISN 50561-3 from SCHWARZBECK fully meets the measurement requirements for measuring asymmetrical disturbance voltages in PLC equipment, contact EUTTEST for a quotation.
Order No. EUTS0802
EUTTEST is an official authorized distributor of SCHWARZBECK, whose full official name is: SCHWARZBECK MESS - ELEKTRONIK OHG
Ltd. is authorized by schwarzbeck to sell all products in China and provide technical service for the products sold.

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