DD738 series single-phase (long-life) electric energy meterDetailed product description：

The DD738 series single-phase (long-life) energy meter is an induction instrument used to measure single-phase AC active energy with a frequency of 45-55Hz. It has the characteristics of high accuracy, high overload, and long life.

DD738 series single-phase (long-life) electric energy meter introduction:

Specifications and main parameters
Specification Model
DD738-1
accuracy class
Level 1.0
Reference voltage (V)
220 230 240
Reference current (A)
2.5 (10), 5 (20), 10 (40), 15 (60), 20 (80)

basic error
load current
power factor
Basic error (%)
0.05Ib≤I≤0.1Ib
one
± 1.5
0.1Ib≤I≤ Imax
one
± 1.0
0.1Ib ≤ I ≤ 0.2Ib
0.5L 0.8C
± 1.5
0.2Ib ≤ I ≤ Imax
0.5L 0.8C
± 1.0

Normal operating voltage: 0.9-1.1 reference voltage
Maximum operating voltage: 0.6~1.25 reference voltage
Insulation voltage: ≥ 2000VAC