OKUMA E4809-436-016C輸入輸出模塊
當該設定點設置為ENABLE（啟用）時，PQM將僅提取采樣數(shù)據(jù)的基本貢獻，并使用該貢獻計算所有計量量。許多公用設施的計量基于基本值或位移值。使用基本貢獻可以將PQM測量的量與當?shù)毓檬聵I(yè)計量表進行比較。需求：PQM使用下表中描述的三種方法計算需求。此選擇模擬模擬峰值記錄熱需求表的動作。PQM每分鐘測量每相的平均量（RMS電流、實際功率、無功功率或視在功率），并假設電路量保持在該值，直到下一次測量更新。它根據(jù)以下公式計算“熱需求當量”：=在時間t（以分鐘為單位）應用輸入量后的需求值D=輸入量（常數(shù)）k=2.3/熱90%響應時間
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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