A little science of transformer type

Today's popularization for you is the representation of transformer models:

D refers to single-phase, S refers to three-phase, B refers to foil winding, R refers to winding type, H refers to amorphous alloy, J refers to oil-immersed self-cooling, M refers to airtight, L refers to aluminum winding, Z refers to on-load voltage regulator, SC refers to three-phase epoxy resin casting, SG refers to three-phase dry-type self-cooling, KVA refers to capacity (K-1000)