Ｄ５２－Ｗ型０．５級電動系低功率因數(shù)瓦特表，供直流電路或交流４５－６５－５００ＨＺ低功率因數(shù)電路中測量功率．也可以用在任一功率因數(shù)（被測量不大于儀表上的量限的條件下）的電路中測量功率．儀表采用張絲支承和多反射光標(biāo)指示，故靈敏度很高，儀表的本身消耗很低．在一般測量時，儀表本身消耗可忽略不計，該型儀表特別適用于小功率電器，如家用電光源的功率，或測量微型電機變壓器的空載損耗．儀表測量范圍與消耗：儀表型號測 量 范 圍額定電流(A) 額定電壓(V) 滿量程功率值(W)電壓回路電流值D52-W0.025/0.05 0.075/0.15/0.18750.0375/0.75/1.5/30.1/0.2 0.3/0.6/0.75/1.5/3/6/120.25/0.5 0.75/1.5/1.875/3.75/7.5/15/300.5/1 30/75/150/300/600 1.5/3/3.75/7.5/15/30/601/2 3/6/7.5/15/30/60/1202.5/5 7.5/15/18.75/37.5/75/150/3005/10 15/30/37.5/75/150/300/600────────────────────────────────────────0.025/0.05 0.075/0.1125/0.15/0.187/5/0.225/0.375/0.75/1.50.1/0.2 0.3/0.45/0.6/0.75/0.9/2.5/3/60.25/0.5 0.75/1.125/1.5/1.875/2.25/3.75/7.5/150.5/1 1.5/2.25/3/3.75/4.5/7.5/15/301/2 30/45/75/150/300 3/4.5/6/7.5/9/15/30/602.5/5 7.5/11.25/15/18.75/22.5/37.5/75/1505/10 15/22.5/30/37.5/45/75/150/300