描述
电气设备保护自动装置要求可靠性,动作速度快。发变组保护动作速度要求在40ms以内;自动准同期采用同步电压方式,转速、电压调整和滑压控制要求在5ms以内;电压自动调整装置快速励磁要求时间极短;厂用电快切装置快速切换时间一般小于60~80ms,同步鉴定相位差5°~20°。
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