DSS301/DTS301 three phase electrionic watt-hour meter

General:
■This meter is used to account alternating active power of rated frequency 50Hz(60Hz),adopting ADE7752 three phase circuit of ADI company as measurement chip,(Type B meter has 485 communication function).In addition to the normal performance,it strengthens especially the design of stability,long service life,resisting strong disturbance,high precision,wide working voltage.It conforms with GB/T17215-1998 standard and DL/T645-1997 communication rule.
■The power source and circuit adopt twice voltage regulation design,to strengthen the stability of the operation and reduce the load disteibution of the element,so as to lengthen the life of the meter.
■The measure ciecuit,CPU control and 485 communication ciecuit are separated by transformer.It adpots optical-isolation separating the input and output of the impulse signal and 485 communication singal,to reduce the disturbance of the circuit,and strengthen the capacity of resising electromagnetic disturbance.For the characteristic of instability,it adpots the design of super wide voltage range with the normal voltage range in 0.7Un-1.9Un.
■It adopts the high precision chip ADE7752 of ADI company in U.S.A to ensure the precision of the measuring ciecuit.The accuracy class ccords with the Class 1.0 standard,controlled in ±0.5%.
■The element of this meter is adopted according to the Class of order requirements.

Specification and Main Parameter
Accuray Class:1.0
Rated Voltage:3×100V 3×220/380
Basic Current:1.5（6）A、3（6）A、5（20）A、10（40）A、20（80）A、30（100）A