【摘要】 通过分析互感器比、角差测量方法，提出并实现了一种基于精密90°锁相移相电路的新型智能化互感器校验仪自动化测量方案。更多还原

【Abstract】 By analyzing sampling method of transformer errors, a newly developed intelliGent transformer calibrator is presented. An orthogonal decomposation circuit based on 90℃Phase-shift with phase-locked loop is realized. The calibrator can measure the ratio error f and phase displacement of both currnt and voltage transformer auo=tomatically.更多还原