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。
The transformer may be applicable to either four- phase transmission system or AT power supply system in electric railways.
星形延边三角形接线平衡变压器是应用于我国电气化铁道的一种新型三相—两相平衡变压器。
The wye-prolonged delta connected balance transformer is a new 3-phase to 2-phase balance transformer, which has been used in electrified railway in China.
星形延边三角形接线平衡变压器是应用于我国电气化铁道的一种新型三相—两相平衡变压器。
The wye-prolonged delta connected balance transformer is a new 3-phase to 2-phase balance transformer, which has been used in electrified railway in China.
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