GE DS3800NHVE1C1C电源模块
•平均电压THD延迟：如果平均电压THD等于或超过平均电压THD/LEVEL设定值，并且在该设定值中编程的时间延迟内保持该值，则将出现平均电压THT情况。•欠频继电器：欠频检测可被禁用或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OFF。选择报警继电器将使报警继电器激活，并在出现欠频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低频率条件下激活，但不会显示任何信息。这用于过程控制。•低频率水平：当测得的频率降至或低于此设置点设置的水平时，将出现低频率条件。
• AVERAGE VOLTAGE THD DELAY: If the average voltage THD equals or exceeds the AVERAGE VOLTAGE THD LEVEL setpoint value and remains this way for the time delay programmed in this setpoint, an AVERAGE VOLTAGE THD condition will occur.• UNDERFREQUENCY RELAY: Underfrequency detection can either be disabled or used as an alarm, or 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 underfrequency condition exists. Selecting auxiliary relay will cause the auxiliary relay to activate for an underfrequency condition, but no message will be displayed. This is intended for process control. • UNDERFREQUENCY LEVEL: When the measured frequency drops to or below the level set by this setpoint, an underfrequency condition will occur.
