GE DS3800XTFH PLC控制器卡件
•相位过电流水平：当平均（或最大值，见下文）三相电流等于或超过此设定值设置的水平时，将出现相位过电流情况。•相位过电流延迟：如果平均（或最大值，见下文）相位电流等于或超过相位过电流水平设定值，并且在该设定值中编程的时间延迟内保持此状态，则会出现相位过电流情况相过电流激活：相过电流功能可以使用平均相电流或三相电流的最大值。该设置点决定使用哪个。•中性过电流继电器：可以禁用中性过电流，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。选择报警继电器将使报警继电器激活，并在中性过电流条件存在时显示报警信息。
• PHASE OVERCURRENT LEVEL: When the average (or maximum, see below) three phase current equals or exceeds the level set by this setpoint, a phase overcurrent condition will occur. • PHASE OVERCURRENT DELAY: If the average (or maximum, see below) phase current equals or exceeds the PHASE OVERCURRENT LEVEL setpoint value and remains this way for the time delay programmed in this setpoint, a phase overcurrent condition will occur. • PHASE OVERCURRENT ACTIVATION: The Phase Overcurrent function can use either the average phase current or the maximum of the three phase currents. This setpoint determines which is used. • NEUTRAL OVERCURRENT RELAY: Neutral overcurrent 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 neutral overcurrent condition exists.
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