Amorphous core transformer
50% energy savings by replacing transformers that have reached their update period.
This is a distribution transformer with excellent energy-saving performance that significantly reduces "no-load loss," which corresponds to standby power. The capacity of the transformer is determined based on the peak power consumption expected at the facility. Therefore, there can be a significant deviation from this capacity during nighttime, holidays, or certain seasons. In particular, in office buildings, the average load factor of the transformer, which is the ratio of average power to maximum power, is estimated to be around 30 percent, indicating that the time periods when standby power is at its maximum likely account for a considerable proportion. Thus, if you replace the 30-year-old transformer that has reached its renewal period with a Risho amorphous molded transformer, you can achieve a 50 percent energy saving and an annual reduction of 8 tons of carbon dioxide.
basic information
By adopting amorphous alloy for the iron core, we significantly reduced the "no-load loss," which corresponds to the standby power of the transformer. As a result, we cleared the top runner standards for transformers, which were raised in April 2014. We also considered compactness, so we believe we can address space issues during replacement.
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Applications/Examples of results
It is adopted as equipment that constitutes high-voltage power distribution facilities.
Detailed information
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Comparison of Energy Saving Effects Compared to a transformer from 30 years ago that has reached its renewal period, there is a 50% energy saving effect. The "no-load loss" in the graph corresponds to the "standby power" of the transformer. The comparison conditions take a transformer with a capacity of 500 kVA as an example, setting the load factor at 40%, which is the standard load for specific equipment.
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Image of Atomic Arrangement 〇 What is Amorphous Amorphous means "lacking regularity." The atomic arrangement of normal metals has a crystalline structure with regularity, as shown in photo (a), but amorphous alloys are metals created by rapidly cooling alloys like iron from a molten state, resulting in an irregular non-crystalline atomic arrangement as shown in (b).
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Characteristics of Amorphous Iron Cores When amorphous alloys are used for transformer cores, the following effects are exhibited, significantly reducing "no-load loss" (standby power). 〇 The loss (hysteresis loss) when magnetic flux passes through the core is small. 〇 The electrical resistance is high, resulting in small eddy current losses.
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Load loss and no-load loss The losses in a transformer are broadly classified into "load loss" and "no-load loss." "Load loss" occurs when load current flows through the transformer's "windings." Its magnitude is proportional to the square of the load current and represents the losses that occur according to the amount of power used. It mainly arises in the windings (copper wire), which is why it is also referred to as "copper loss." "No-load loss" primarily occurs in the transformer's core. It occurs continuously in the receiving state, so it can be considered a type of "standby power." It is also called "iron loss."
