GE DS3800XAIA1A1A模拟接口卡
•过电压水平：当单相、两相或三相上的电压等于或超过此设定点确定的水平时，出现过电压情况。所需相位数由O/V操作所需相位设定值确定。要清除过电压条件，电压必须降至过电压电平设置的97%。例如，如果过电压电平设置为4200 V，则当适当相位的电压低于4074 V（4200×0.97）时，该条件将清除。实施该滞后是为了避免由于电压波动引起的干扰警报。•OVERVOLTAGE DELAY（过电压延迟）：如果电压等于或超过OVERVOLTAG LEVEL（过电压电平）设定值，并且在该设定值中编程的时间延迟内保持此状态，则会出现过电压情况
• OVERVOLTAGE LEVEL: When the voltage on one, two, or three phases equals or exceeds the level determined with this setpoint, an overvoltage condition occurs. The number of phases required is determined by the PHASES REQUIRED FOR O/V OPERATION setpoint. To clear the overvoltage condition, the level must decrease to 97% of the OVERVOLTAGE LEVEL setting. For example, if the OVERVOLTAGE LEVEL is set to 4200 V, the condition clears when the voltage in the appropriate phase(s) goes below 4074 V (4200 × 0.97). This hysteresis is implemented to avoid nuisance alarms due to voltage fluctuations. • OVERVOLTAGE DELAY: If the voltage equals or exceeds the OVERVOLTAGE LEVEL setpoint value and remains this way for the time delay programmed in this setpoint, an overvoltage condition will occur
