BS 7494-1:1991

This standard BS 7494-1:1991 Performance and testing of teleprotection equipment of power systems. is classified in these ICS categories:

• 25.040.40 Industrial process measurement and control

This 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.