OKUMA E4809-436-016C输入输出模块
当该设定点设置为ENABLE（启用）时，PQM将仅提取采样数据的基本贡献，并使用该贡献计算所有计量量。许多公用设施的计量基于基本值或位移值。使用基本贡献可以将PQM测量的量与当地公用事业计量表进行比较。需求：PQM使用下表中描述的三种方法计算需求。此选择模拟模拟峰值记录热需求表的动作。PQM每分钟测量每相的平均量（RMS电流、实际功率、无功功率或视在功率），并假设电路量保持在该值，直到下一次测量更新。它根据以下公式计算“热需求当量”：=在时间t（以分钟为单位）应用输入量后的需求值D=输入量（常数）k=2.3/热90%响应时间
When this setpoint is set to ENABLE, the PQM will extract the fundamental contribution of the sampled data only and use this contribution to calculate all metering quantities. Many utilities base their metering upon fundamental, or displacement, values. Using the fundamental contribution allows one to compare the quantities measured by the PQM with the local utility meter. DEMAND: The PQM calculates demand using the three methods described in the table below.This selection emulates the action of an analog peak-recording thermal demand meter. The PQM measures the average quantity (RMS current, real power, reactive power, or apparent power) on each phase every minute and assumes the circuit quantity remains at this value until updated by the next measurement. It calculates the “thermal demand equivalent” based on the following equation: = demand value after applying input quantity for time t (in min.) D = input quantity (constant) k = 2.3 / thermal 90% response time
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