Hello,
Where I work, there is a policy of protecting distribution
transformers larger than 1.5 MVA with differential protection.
In some other cases, small transformers need differential
protection to provide discrimination when multiple units are
connected in parallel.
The distribution...
Hi Everyone,
I'm looking for opinions or experience in the use of RMS-sensing
numerical overcurrent relays in high impedance busbar protection
schemes (i.e. relay in series with a stabilising resistor, connected
in parallel with the secondaries of a number of summed CTs).
The original 1948...
