1UL certified bidirectional communication smart meter

The UL certification of the electricity meter marks that it has successfully passed the comprehensive safety performance testing of Underwriters Laboratories (UL), an internationally renowned safety certification body, and strictly complies with its rigorous safety standards. UL certification, as an advanced certification for the quality and safety performance of electric meters, ensures that the meters meet UL's safety requirements in various aspects such as design concept, production and manufacturing, and material selection, covering multiple key aspects such as electrical safety, mechanical strength, high temperature resistance, and fire resistance.

The UL certified electricity meter has built a solid defense line in the field of electrical safety, effectively reducing the risk of safety hazards such as fire and electric shock. These meters have undergone a series of rigorous performance tests, including accuracy verification, stability assessment, and anti-interference ability testing, to ensure that they can maintain stable and accurate operating conditions in various complex and changing environments. In the North American market and other regions where UL certification is highly recognized, obtaining this certification is the stepping stone for electricity meters to enter these markets for sale. Products that have not been UL certified often find it difficult to stand out and compete in these markets.

UL certification is not only a golden business card for product quality and safety, but also a high reflection of manufacturers' commitment to product quality and safety. The UL certified electricity meter demonstrates the manufacturer's pursuit and responsible attitude towards product quality and safety performance, effectively enhancing the brand image and corporate reputation. The UL certification mark has almost become synonymous with "safety and reliability" and is highly trusted by all sectors. The prominent UL certification mark on the electricity meter is like a credit medal, enhancing the confidence and trust of consumers, users, distributors, retailers and other parties in the product, thereby winning a broader market space and stronger competitiveness for the product.UL certified electric meter

2、 Meter parameter indicators-UL certified bidirectional communication smart meter

Active power accuracy: 0.5S level, reactive power accuracy: 2 levelVoltage and current accuracy: 0.2 level;

Voltage specifications: 3 × 100V, 3 × 380V, 3 × 57.7/100V, 3 × 220/380V;

Current specification: 3 × 1 (6) A (connected through a transformer);

Working temperature: -25 ℃~+55 ℃

Relative humidity: ≤ 95% (no condensation)

Supports 2-channel independent 485 communication, with adaptive Modbus RTU protocol/DL/T645-07 protocol. The two 485 channels can be independently set and different protocols can also be used; The baud rate can be set from 1200bps to 19200bps, and the parity bit can be set;

Support 1DI1DO;

Support active pulse output;

Dimensions: 126 * 88 * 69, standard DIN35 rail installation;

3、 Features of Electric Meter Functions

Support full power parameter measurement (U, I, P, Q, S, PF, F); And 2-31st harmonic measurement;

Support bidirectional active and reactive energy measurement, and support multi rate energy statistics for two sets of time period meters, four time zones, 14 daily time periods, and four rates;

Supports 4 typesStatistics of demand and occurrence time;

Support historical electricity consumption for the past 48 months and 90 days (including electricity consumption at various rates);

Support one switch output and one switch input; (Second 485 communication is not supported when selecting this function)

Supports three-way external NTC temperature measurement function, with a temperature range of -40 ℃~99 ℃. (When selecting this function, it does not support switch quantity and second 485 communication);

LCD Chinese display, backlight delay off time can be set; In addition to displaying electrical parameters and energy values, LCD can also display information such as current quadrant, communication status, phase loss, voltage loss, reverse sequence, etc;

Support infrared communication;

The Modbus RTU protocol/DL/T645-07 protocol is adaptive, and two 485 channels can be independently set or different protocols can be used; The baud rate can be set from 1200bps to 19200bps, and the parity bit can be set.

4、 Installation and wiring of electric meters

4.1 External dimensions of electric meter

4.2 Wiring instructions for electric meters