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Description of BS 7494-1:1991 1991This standard applies to narrow-band single-signal and multi-signal equipment for teleprotection. It also applies to voice frequency equipment which is used in connection with various telecommunication systems, such as power line carrier (PLC), radio link, rented circuits, leased or owned cables. Narrow-band systems include audio frequency systems operating within a 4 kHz maximum band, and PLC channels within a maximum of 4 kHz bandwidth (for one direction of transmission). Applies to narrow-band single-signal and multisignal equipment for teleprotection. Also applies to voice frequency equipment which is used in connection with various telecommunication systems, such as power line carrier, radio link, rented circuits, leased or owned cables.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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