GE DS3800NTRD1F1F工控控制卡件
•电流不平衡水平：当电流不平衡等于或超过该水平时，将出现电流不平衡状况。有关计算方法的详细信息，请参见第5章电流不平衡延迟：如果电流不平衡等于或超过此设置点中编程的时间延迟的电流不平衡水平值，则出现电流不平衡情况。•电压不平衡继电器：电压不平衡计算为平均值的最大偏差除以平均三相电压。电压不平衡可以禁用，用作报警或过程控制。如果不需要此功能，则将此设置点设置为关闭。如果存在电压不平衡情况，选择报警继电器将使报警继电器激活并显示报警信息。
• CURRENT UNBALANCE LEVEL: When the current unbalance equals or exceeds this level, a current unbalance condition will occur. See chapter 5 for details on the method of calculation. • CURRENT UNBALANCE DELAY: If the current unbalance equals or exceeds the CURRENT UNBALANCE LEVEL value for the time delay programmed in this setpoint, a current unbalance condition occurs. • VOLTAGE UNBALANCE RELAY: Voltage unbalance is calculated as the maximum deviation from the average divided by the average three phase voltage. Voltage unbalance can either be disabled, used as an alarm or as a process control. Set this setpoint to off if the feature is not required. Selecting alarm relay will cause the alarm relay to activate and display an alarm message whenever a voltage unbalance condition exists.
