I. Overview

The DDS1332 electronic single-phase energy meter adopts dedicated large-scale integrated circuits and SMT technology. The counter is driven by a stepper motor, and power outage data is not lost. It is one of the latest energy metering products in China. This product can be used to measure AC single-phase active energy with a rated voltage of 220V and a rated frequency of 50Hz. Its performance meets all technical requirements of the International Electrotechnical Commission IEC1036 "Static AC Active Energy Meters of Class 1 and 2" and the National Standard of the People's Republic of China GB/T17215-2002 "Prohibited AC Active Energy Meters of Class 1 and 2".

2、 Main functions and features

This product has the characteristics of small size, light weight, high precision, low power consumption, wide load, and easy installation.

2. This product has a bidirectional metering function, which can accurately measure the power in both forward and reverse directions, and accumulate electricity in one direction, thus it has the function of preventing electricity theft.

3. This product uses optocoupler output detection signal and light-emitting diode to indicate power consumption.

4. This product has the feature of functional expansion. If the prepaid function is added and the carrier meter function is added, it will facilitate the automation management of the power supply department.

3、 Main specifications and technical parameters

1. Specifications:

Model and specification DDS1332

Accuracy level 1.0 2.0

Rated voltage (V) 220230

Calibration current (A) 520 2080

The constant of the electric meter can be found on the electric meter label

2. Basic error:

Basic error of load current power factor

(A) COS diameter 1.0 level 2.0 level

0.05Ib 1.0±1.5±2.5

0.1Ib～Imax 1.0±1.0±2.0

0.1Ib 0.5 lag ± 1.5 ± 2.5

0.8 leading ± 1.5-

0.2Ib~Imax 0.5 lag ± 1.0 ± 2.0

0.8 leading ± 1.0-

Ib is the calibration current, Imax is the rated maximum current

3. Starting current: Under the conditions of rated voltage, rated frequency, and power factor of 1, when the load current is shown in the table below, the energy meter can work normally.

Accuracy level 1.0 2.0

Load current 0.4Ib 0.5Ib

4. Stealth: This table has a logic anti creep circuit.

5. Average lifespan: ≥ 10 years

4、 Working principle

The electricity consumed by the user is sampled from the signals on the voltage divider and splitter, and sent to the amplifier and multiplier circuit. The product signal is integrated and V/F converted, and then output as a pulse signal through the frequency division and power drive circuit, driving the stepper meter to accumulate electricity.

5、 Installation and wiring

1. The electric energy meter can be installed and used after passing the inspection and being sealed with lead before leaving the factory. The electric energy meter should be installed indoors, and the bottom plate of the meter should be fixed on a sturdy and fire-resistant wall. It is recommended to install it at a height of 1.8 meters, in an environment of -10 ℃ -+45 ℃, with a relative humidity not exceeding 85%, and there should be no corrosive gases in the air.

2. Dimensions: Length x Width x Height=167MM x 110MM x 67MM

3. The electric energy meter should be wired according to the wiring diagram on the junction box. It is recommended to use copper wire or copper connectors to introduce the terminals 1.2.3.4. The 5+and 6- terminals are pulse signal output terminals for error detection or as pulse signal interfaces.