Substation transformer with DM1 cell breaker (I>
45A); Substation transformer with switch fuse combined
QM (I < 45A). The circuit breaker protection is man-
datory when the current MV side is greater than 45A
(IEC 60265).
The line diagram of Distribution substations with MV
metering is given in Figure 5 [9,10]: The distribution substations count MV includes: 02 incoming panels, each with a load-break switch.
These are part of the loop and are connected to a bus
(IM);