High-voltage power distribution cabinet common reference symbol meaning and transformer in the drawing of some parameters Please see the following figure

Question 1: SCB10 is epoxy resin casting dry-type transformer, 10 is the design serial number, now has been updated to 11, 11 more energy-saving a little bit. 1250 is the capacity is also known as the real power, the unit is KVA. 10kV + - is the high-voltage side voltage regulating taps, *** five gears. Ud = 6% is the short-circuit impedance. DYN11 is the high-voltage transformer with the low-voltage windings of the wiring connection mode, low-voltage center point grounding, wiring mode for 11 points. way, low-voltage center point grounding, wiring for 11 points.

Question 3:2500 is the current-carrying capacity.

Question 4:240kVA is the capacity of the capacitor, capacitor capacity according to the main transformer capacity 15~30% selection. It means that this group of capacitors can provide so much reactive power if it is put into operation.

The second chart: 12kV and lightning shock is basically the same, 31.5/4 is worth 4 seconds thermal stability, 80kA is dynamic stability.

These two parameters indicate the stability of the switchgear in the event of a fault, the following order of operation and so on are basically the same