BS EN 50065-4-3:2003

Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148.5 kHz. Low voltage decoupling filters. Incoming filter | Status: Superseded, Under review, Withdrawn

1 Scope This standard applies to incoming filters used to control the coupling of signals between the utility area and the consumer area (see Figure 1). The standard defines

• • the minimum impedance in the relevant frequency band(s) at both Utility port and Consumer port,
• • the minimum attenuation of unwanted signals transmitted from the utility side to the consumer side and vice versa,
• • the transmission characteristics:
  • — operating frequency domain for both utility side and consumer side,
  • — attenuation between the utility side and the consumer side and vice versa,
  • — impedance at the utility side and at the consumer side.

This standard applies to incoming filters designed for and used in single or multiphase installations. Figure 1 — The application of incoming filter