BS 7494 is a European standard that discusses the performance and testing of teleprotection equipment for power systems. BS 7494-2 is the second part of the multi-part series that applies to narrowband and wideband teleprotection systems used to convey analogue information about the primary quantities such as phase or phase and amplitude. The teleprotection equipment can either be separate or integrated into one unit with the protection equipment or telecommunication equipment.
Narrow-band systems include systems operating within a 4 kHz band (for each direction of transmission). Wide-band systems include systems occupying more than 4 kHz bandwidth (for each direction of transmission).
In addition to the power supply and the interfaces belonging to the teleprotection equipment, the performance of the teleprotection equipment in conjunction with the protection equipment shall be tested under BS 7494-2.
Note: Broad-band command systems are not dealt with in BS 7494-2.
BS 7494-2 on analogue comparison system of power systems is useful for:
A teleprotection system is a protection system in charge of monitoring the condition of the grid, isolating faults, and preventing damage to critical parts of the power grid.
BS 7494-2 assists you with characteristics of analogue comparison teleprotection schemes, general equipment interface requirements, specific power supply requirements, and operational requirements for improving the analogue comparison system of power systems.
BS 7494-2 also guides you with testing methods for analogue comparison teleprotection equipment used in connection with power network protection systems.
With obedience and compliance to BS 7494-2, you can improve the analogue comparison system of power systems.
IEC 60834-2:1993