The transformer may be applicable to either four- phase transmission system or AT power supply system in electric railways.

三相变四相电力变压器是一种新型平衡变压器，由此可以实现四相输电方式，也可以用于电气化铁道的AT供电方式。

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AT power supply system with protection wire is more complex than other power supply systems in framework, so it has more faults than others.

带保护线的AT供电方式较其他供电方式在结构上更为复杂，故障率也比其他供电方式更高。

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The operation ways of auto-transformer for AT power supply are expounded. Its performance and characteristics are analyzed. It is introduced that how to get to the lower impedance.

阐述了AT供电用自耦变压器的运行方式，分析了AT用自耦变压器的性能、特点及能达到低阻抗的原因及措施。

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Capsulizing the new mood, the website of the Global Times newspaper on Wednesday displayed a photo of workers at a power supply company in eastern Anhui province writing "cut down waste" slogans on balloons.

NPR: Leaner New Year: China Tones Down The Celebrations

Those high-cost contracts were seen as a way of assuring the state's power supply at reasonable rates, but after the crisis, when prices fell, they appeared much too costly.

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Rockefeller invested in a feasibility study to determine the viability of wind and solar power at Little Dix because at the time Virgin Gorda had no power supply.

FORBES: Top Caribbean Resorts: Little Dix Bay in the British Virgin Islands