Wholesale of energy storage bidirectional metering meters

1、 Overview

Photovoltaic energy storage bidirectional metering meterIt is a smart meter that can simultaneously measure electricity consumption and electricity generation, especially suitable for photovoltaic energy storage systems. It can accurately record and display the forward (i.e. electricity consumption) and reverse (i.e. electricity generation) flow of electricity.

Photovoltaic energy storage bidirectional metering meterMainly used in distributed photovoltaic power plants and other occasions that require bidirectional metering. In these situations, the electricity generated by photovoltaic systems may not be fully consumed by users, and the remaining electricity needs to be transmitted to the grid; At the same time, when the photovoltaic system cannot meet the electricity demand of users, they also need to obtain electricity from the grid. Therefore, the use of bidirectional metering meters for photovoltaic energy storage can achieve precise measurement and management of the flow of these electrical energies.

2、 Functional requirements

1. Supports LCD display and can be set with buttons

2. Support forward and reverse active and reactive energy meters, four quadrant reactive energy, support 2 sets of time period meters, 4 time zones, 14 daily time periods, and 4 types of multi rate energy;

3. Support historical electricity consumption in December (including electricity consumption at various rates);

4. Support measurement of three-phase voltage, current, active power, reactive power, apparent power, power factor, and frequency;

5. Support extreme values and occurrence times of the previous three months (including maximum and minimum values of three-phase voltage, current, power, and combined power);

6. Harmonic measurement, measurement of total harmonics of voltage and current, as well as 2-31st order subharmonics;

7. Voltage and current phase angle, measurement of three-phase voltage and current imbalance, supporting 4 types of demand and occurrence time statistics;

8. Support 4-channel temperature measurement;

9. Supports 4-channel DI and 2-channel DO, with switch output that can be used to control switches or achieve alarm output function;

10. Support 1-channel residual current measurement;

11. Support alarm functions for overvoltage, undervoltage, overcurrent, phase loss, overload, high temperature, imbalance, high harmonics, etc., and can be configured with corresponding DO outputs;

12. Support power outage reporting;

13. Supports RS485 communication, 4G, NB, WIFI, LORA and other wireless communication methods, among which 4G, NB, WIFI can implement MQTT protocol, HTTP protocol, TCPIP transparent transmission and other network protocol access.

3、 Technical indicators

1. Active power accuracy: 0.5S level, level 1, reactive power accuracy: level 2;

2. Voltage specifications: 3 x 100V, 3 x 57.7/100V, 3 x 380V, 3 x 220/380V, 3 x 380/660V, 3 x 660V;

3. Current specifications: 3 × 1 (6) A, 3 × 20 (100) A;

4. Auxiliary power supply: DC24V, AC85~465V;

5. Working temperature: -25 ℃~+55 ℃;

6. Relative humidity: ≤ 95% (no condensation);

7. Support active pulse output;

8. Dimensions: 72 * 87.8 * 71.5, supporting standard DIN35 rail installation.