Please take a look at the meaning of common reference symbols for high-voltage distribution cabinets and some parameters of transformers on paper.

Question 1: SCB 10 is epoxy resin cast dry-type transformer, and 10 is design serial number. Now it has been updated to 1 1, 1 1 to save energy. 1250 is capacity, also called actual power, and the unit is KVA. 10kV+- is a high-voltage side voltage regulating tap with five gears. Ud=6% is short-circuit impedance. DYN 1 1 is the connection mode of the high and low voltage windings of the transformer, and the low voltage center point is grounded, and the connection mode is 1 1 point.

Question 3:2500 is the carrying capacity.

Question 4:240kVA is the capacitor capacity, and the capacitor capacity is selected according to the main transformer capacity 15~30%. This means that this group of capacitors can provide such a large reactive power if put into use.

The second picture: 12kV is basically consistent with lightning impulse, 3 1.5/4 is worth thermal stability for 4 seconds, and 80kA is dynamic stability.

These two parameters indicate the stable performance of the switch cabinet under fault conditions, and the following operation sequence is basically the same.