BNO LV supply and active harmonic filter

As far as I can see G87 makes no mention of harmonic filters at all - so of itself will neither permit nor deny.

I'd imagine that in an ideal situation the filters would be as close to the source of the harmonics as possible - e.g. within individual customer premises - so that the BNO's network was itself was protected from the increased currents. Also responsibility for ongoing inspection and maintenance would fall on the customers whose equipment is causing the problems rather than the BNO, and likewise if a customer introduced more disturbing appliances, it would be their responsibility to upgrade their filtering accordingly. There might also be implications for metering if VA values are taken into account (not normally the case for small whole current meters, but can be for some larger commercial/industrial situations).

Bur if one big unit costs substantially less than several smaller ones, I can see the temptation to do otherwise.

  - Andy.

As far as I can see G87 makes no mention of harmonic filters at all - so of itself will neither permit nor deny.

I'd imagine that in an ideal situation the filters would be as close to the source of the harmonics as possible - e.g. within individual customer premises - so that the BNO's network was itself was protected from the increased currents. Also responsibility for ongoing inspection and maintenance would fall on the customers whose equipment is causing the problems rather than the BNO, and likewise if a customer introduced more disturbing appliances, it would be their responsibility to upgrade their filtering accordingly. There might also be implications for metering if VA values are taken into account (not normally the case for small whole current meters, but can be for some larger commercial/industrial situations).

Bur if one big unit costs substantially less than several smaller ones, I can see the temptation to do otherwise.

  - Andy.