GE DS3800XPTL涡轮机控制衰减器板
选择辅助继电器将使辅助继电器在中性过电流条件下激活，但不会显示任何信息。这用于过程控制。•中性过电流水平：当中性电流等于或超过此设置点设置的水平时，将出现中性过电流条件。•中性过电流延迟：如果中性电流等于或超过中性过电流水平设定值，并且在该设定值中编程的时间延迟内保持此状态，则会出现中性过电流情况。•欠压继电器：可禁用欠压，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，并在出现欠压情况时显示报警信息。选择辅助继电器将导致辅助继电器在欠压情况下激活，但不会显示任何信息。这用于过程控制。
Selecting auxiliary relay will cause the auxiliary relay to activate for a neutral overcurrent condition but no message will be displayed. This is intended for process control. • NEUTRAL OVERCURRENT LEVEL: When the neutral current equals or exceeds the level set by this setpoint, a neutral overcurrent condition will occur. • NEUTRAL OVERCURRENT DELAY: If the neutral current equals or exceeds the NEUTRAL OVERCURRENT LEVEL setpoint value and remains this way for the time delay programmed in this setpoint, a neutral overcurrent condition will occur. • UNDERVOLTAGE RELAY: Undervoltage 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 an undervoltage condition exists. Selecting auxiliary relay will cause the auxiliary relay to activate for an undervoltage condition but no message will be displayed. This is intended for process control.
