type	Reference voltage (V)	Basic current Ib (A)	Reference frequency (Hz)	Accuracy (class)	Weight (Kg)
DTSY1666 --------- DSSY1666	3× 220/380 ------------ 3× 100/380	3× 1.5(6) 3× 3(6) 3× 5(20) 3× 10(40) 3× 15(60) 3× 20(80) 3× 30(100)	50	1.0 2.0

Application:

DTSY1666 series three phase static watt-hour meter adopt large-scale integrate circuit, 16-digit A/D changeover, digital multiplier and SMT technology. It is able to measure three-phase positive and negative active energy.

Structure:
Independent three-unit measuring module

Prevent thieving actions caused by wrong phase sequence, current reversing, difference phase between voltage and current, voltage breaking or zero wire breaking

Anti-interference of electromagnet

Low self-consumption

High accuracy