（一）概述
EPWH型有功電能變送器、EPKH型無功電能變送器是一種測量有功、無功電能的儀器，EPWWH型有功功率/有功電能、EPKKH型無功功率/無功電能組合式變送器是一種既能測量有功（或無功）電能的具有雙重功能的儀器，是電能計量、節(jié)能自動化和計算機電費結(jié)算的配套儀器。
EP系列電能變送器技術(shù)指標*符合JJG 596-89《電子式電能表》的要求，相對誤差小于0.5%，且具有優(yōu)異的溫度特性和*穩(wěn)定性，配以電能顯示記錄裝置，既能用于電網(wǎng)調(diào)度系統(tǒng)，又是理想的固態(tài)電能表。該變送器適用于頻率為50Hz、60Hz及特殊頻率的單相、三相（平衡負載和不平衡負載）線路，電能以光耦電極開路或斷電器接點二種形式脈沖輸出，以適應(yīng)不同的RTU和電能記錄裝置。數(shù)字量輸出與輸入被測量的有功（或無功）電能相對應(yīng)，輸出引線是四根線，雙向數(shù)字輸出正、負兩個方向的電能量。

（二）型號、規(guī)格
EPWH201---三相三線有功電能變送器    
EPKH201---三相三線無功電能變送器
EPWWH201---三相三線有功功率/有功電能組合變送器
EPKKH201---三相三線無功功率/夫功電能組合變送器
*EP系列電能變送器有功電能/無功電能準確度：1.0%相對誤差

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