Calculate the recommended transformer rating (kVA) from a connected load table. Applies growth and diversity factors per EN 60076 and IEC 60076-1.
| Growth factor | β |
| Diversity factor | β |
| Peak hours / day | β |
| Load cycle | β |
| Primary voltage V_p | β |
| Secondary voltage V_s | β |
| Transformer impedance Z_t | β |