DDSU228-DL 4P single-phase rail type multifunctional electric energy watch strap pull and close switch

Overview

The DDS228-D DIN rail mounted single-phase electronic active energy meter is a newly developed single-phase two-wire active energy meter by our company, which adopts microelectronics technology and specialized large-scale integrated circuits, and applies advanced technologies such as digital sampling processing technology and SMT process. The technical performance of this meter fully complies with the relevant technical requirements of the Level 1 single-phase active energy meter in the IEC 62053-21 international standard, and can directly and accurately measure the consumption of active energy by loads in single-phase AC power grids with a rated frequency of 50Hz or 60Hz. This meter is equipped with a 7-digit LCD display to show functional battery levels, and has the characteristics of good reliability, small size, light weight, beautiful appearance, and easy installation. Widely applicable and convenient to set up

Features

• Adopting 35mm DIN standard rail installation, in compliance with DIN EN 50022 standard, or front mounted installation, the two installation methods can be freely chosen by the user.

• Width of 4 poles, in accordance with JB/T7121-1993 standard.

• Equipped with a 7-bit LCD display, standard configuration includes 6+1 bit (999999.9kWh) display, and 5+2 bit display can be selected.

• Standard configuration: Passive power pulse output (with polarity),.

• Three LEDs respectively indicate the power status and power pulse signal, and RS485 communication indicator.

• The standard configuration does not detect the direction of load current flow, and can choose to automatically detect the direction of load current flow, indicated by a separate LED.

• Unidirectional measurement of single-phase two-wire active energy consumption, independent of the direction of load current flow, in accordance with IEC 62053-21 standard.

• Standard configuration S-type wiring (bottom in, top out), directly connected for use

• It has RS485 communication function and can be connected to RS485 communication network for remote meter reading and centralized management. It comes with standard communication protocol and optional communication protocol (MODBUS-RTU or DL/T645 protocol).

Technical parameters and specifications

1. Model and specifications

2. External installation dimensions and wiring diagram

Port Description

• This table is a direct access type

• 1 and 3 are the entry ends when entering the line 2 and 4 are load terminals connected to the outgoing line

• Passive pulse output ports: ④ (-), ③ (+) can be used as calibration pulse and energy pulse metering interfaces

• RS485 communication ports: ② (A), ① (B)

LCD screen display instructions:

• Screen self-test shows 88888.8.8

• Display voltage U

• Display current I

• Display active power P

• Display power factor PF (optional)

• Display frequency Fr (optional)

• Display table constant CXXXX

• Battery level display: XXXXXX Ｘ

Indicator Light Instructions

• COM. for RS485 communication indication

• POWER is the power indicator

• IMPULES is a pulse indicator for energy metering

Installation and Usage

• Before use, the lead seal of the electric energy meter should be checked for integrity. For electric energy meters that are not sealed or have been stored for too long, they must be re inspected by a metrological authorization agency before installation to ensure measurement accuracy.

• The electric energy meter should be installed indoors in a dry and ventilated place, avoiding direct exposure of strong light to the meter window. The bottom plate of the electric energy meter should be placed on an insulated object that is not easily affected by moisture, and it is recommended to install it at a height of 1.8 meters or more.

• The electric energy meter should be wired according to the shell wiring diagram, and attention should be paid to the current size and the matching of the wires. The joint terminals should be suspended tightly to avoid damage to the instrument when the current is too high.

• The voltage connected to the energy meter should comply with the reference specified value of the energy meter, and the current passing through should not exceed the maximum current limit shown on the energy meter. Exceeding this range will result in inaccurate measurement, and in severe cases, it may cause instrument damage and safety accidents.

• When connecting an electric energy meter with specifications of 10 (40) A or above, copper core leads and copper connectors should be used for connection.

Transportation and Storage

• The transportation and unpacking of electric energy meters should not be subjected to severe impacts. Measures for transporting precision instruments should be taken, and transportation and storage should be carried out in accordance with the provisions of GB/T15464-1995 "General Technical Conditions for Instrument Packaging".

• The electric energy meter should be stored in its original packaging box, in a clean location with an ambient temperature of -25 ℃ to+70 ℃, a relative humidity not exceeding 85%, and the air should not contain harmful substances that can cause corrosion.

• This product is a precision electronic instrument. If there are obvious signs of damage to the outer shell due to severe impact or falling from a high altitude during product handling, use, or installation, please do not power on the electric meter and contact our company as soon as possible for handling.

• If the electric energy meter is not installed or used for a long time, it should be packaged properly and stored in its original box for no more than three years.