315KVA transformer high-voltage side need to use the specifications of the high-voltage cable
You are not very specific, according to the general distribution transformer, then the high side of 10kV, low voltage side of the 400V; high voltage side of the actual current is small, the voltage is high, so the main choice of cable attention to insulation, pressure and other properties, specifications suggest that you choose YJV-1 * 25 (10KV) cable, 25 mm square cable. (High-voltage cable diameter is not too small)
315KVA transformer high-voltage cable 50 square how much, but in accordance with the local power supply from the power supply program to set, not how much is their own
To the formula high-voltage side rated current = 315 / (1.732 * 10) and then check Kazakhstan with the wire rated current know the choice
