315kVA rated line current low voltage output is:
I2 = 315 (kVA) * 1000/400 (V) / 1.732 = 454.68A which is the rated output of each phase line current values (this number, you can get the transformer designer point of view). 500A is the sum of the phase you? Or each phase is 500A?
If each phase is 500A. Then 10% of the overload. You can refer to the transformer (oil change, or dry type transformers) loads guidelines (national standard) to handle.
wire cable baskets, metal cable trays
The short term is possible (as long as the transformer top oil temperature does not exceed 85 degrees). But the long-term is safe.
Amorphous alloy material is 70 years of the 20th century came a new type of alloy material, which uses super-cooling technology advanced, the power of liquid metal to 1X10 6 C / S-
Direct cooling cooling rate of solid formation 0.02-0.04mm thin strip, get a short-range atomic order on the permutations and combinations, the characteristics of long-range disorder of non-gold alloy,
This alloy has many unique performance characteristics, such as the excellent magnetic properties, corrosion resistance, wear resistance, high hardness, high strength, high resistance rate. Fe-based amorphous alloy iron
Core with high saturation magnetic flux density, low coercive force, low loss (equivalent to silicon steel sheet 1/3-1/5), low excitation current, good temperature stability of the amorphous
Alloy than for distribution transformer load loss transformers with silicon steel manufacturing decreased by 70% S9 Series -80%, no-load current ratio decreased 40% -60% S9, load loss than the S9, S7 decreased by 20% -30%.
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