The secondary system consists of step-down transformers and secondary circuits at utilizationvoltage levels.
二次配电系统是由降压变压器和满足最终用电设备电压等级的二次电路组成。
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Spang Power Electronics designs dry-type transformers in 5 and 15 kV classes to step down power from the distribution voltage to the utilizationvoltage in commercial or industrial applications.