Hiking DTS238-7 - User Manual

DTS238-7 WIFI type multi-function smart energy meter is designed to measure three phase four wire AC active
energy and variable parameter. The meter have RS485 communication port and WIFI communication, it can use
APP for remote reading and control on/off. All of its functions comply with the relative technical requirement for
class 1 three phase watt hour meter in IEC62053-21 and its data communication rules obey the requirement of
MODBUS-RTU and WIFI 802.11b/g/n.It is a long life meter with the advantage of high stability , high over load
capability , low power loss and small volume .
The meter should be installed in suitable environment with ambient temperature range between-25°+55°,the
relative humidity less than 75% and temperature limits between and-40°+70°.
The meter is manufactured complying with international standard IEC62052-11 on Electricity metering
equipment (AC) General requirements tests and test conditions and IEC62053-21 on Static meters for active
energy (classes 1 and 2).
2.Specification and Technical Parameters
2.1Specification
Din rail , 3 phase wifi smart energy meter
Type: DTS238-7

Summary

Specification and Technical Parameters

Specification

Details the DTS238-7 WIFI smart energy meter's capabilities and compliance with IEC standards.

Basic Parameters

Lists key operating parameters like frequency, voltage, accuracy, and communication interfaces.

Technical Parameters

Covers voltage/current limits, protection values, basic tolerance, self-consumption, and starting current.

Anti-creeping and Average-life

Describes anti-creeping circuit logic and the meter's expected average operational lifespan.

LCD Display

Specifies the LCD display format for total active energy in kWh.

Basic Features

Measurement and Display

Highlights capabilities like measuring active energy, displaying voltage, current, and power factor.

Communication and Control

Covers RS485/WIFI communication, APP control for reading and on/off functions.

Protection and Timing

Details features for overvoltage, undervoltage, overload protection, and timing control via APP.

APP Reset Function

Explains the ability to reset active energy to zero using the mobile application.

Working Principles

Energy Measurement Process

Describes voltage and current sampling, signal transformation, and energy measurement via counters.

Pulse Output

Details the energy pulse output for testing with specific pulse width.

Structure and Usage

Meter Structure

Outlines the meter's construction: base, cover, terminal base, and terminal cover with sealing.

Schematic Diagram

Provides a block diagram illustrating the working principles of the meter.

Connection Diagram

Illustrates wiring for direct input and transformer input types with terminal connections.

Indicator and Button Functions

Explains the function of LEDs (WIFI, impulse) and buttons (Setting, Down bond).

Installation

Installation Guidelines

Covers DIN rail mounting, checking goods, installation environment, and wiring.

Installation Dimension Diagram

Provides a diagram showing the physical dimensions for meter installation.

Transportation, Storage, and Warranty

Transportation and Storage

Details handling requirements during transport and storage conditions.

Warranty Period

Specifies the warranty terms for the meter based on user operation.

Frame Format and Communication

Read and Write Commands

Defines the frame structure for reading and writing data using Modbus commands.

Energy Meter Register Address

Lists register addresses for various data items like kWh, voltage, current, and power.

Display Items

Energy and Current Display

Details display formats for impulse constant, active energy, and phase currents.

Voltage and Power Display

Covers display formats for phase voltages, active power, and reactive power.

Power Factor and Frequency Display

Lists display formats for total/phase power factors and frequency.

WISEN Software and APP Control

Software Download and Meter Input

Instructs on downloading WISEN software and initiating meter input for WiFi connection.

Device Adding and Wi-Fi Configuration

Guides through adding the device, selecting Wi-Fi, and entering credentials for connection.

APP Functions Overview

Explains control, reset, timing, and setting functions available via the mobile app.

Meter Detail and History

Describes accessing meter details, history, and understanding parameter definitions.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

This document describes the DTS238-7, a Din rail, 3-phase WiFi smart energy meter designed for measuring three-phase four-wire AC active energy and various other parameters.

Function Description

The DTS238-7 meter is a multi-function smart energy meter that measures positive and negative active energy, accumulating negative energy into positive energy. It also displays real-time values for three-phase voltage, current, active power, power factor, and frequency. The meter features a pulse LED to indicate operation and provides a pulse output with optical coupling isolation. It includes an RS485 communication port and WiFi connectivity, allowing for remote reading and control (on/off) via a dedicated APP. The meter is designed for long-term operation without calibration for active energy measurement. It displays data step-by-step using a button and offers overvoltage, undervoltage, and overload protection, with settable values via the APP. Additionally, it has a timing control function, also settable via the APP, and allows for resetting the active energy to zero.

The working principle involves sampling three-phase voltage and current, transforming them into suitable signals, and processing them through an integrated circuit. The meter then outputs a pulse signal proportional to the measured power, driving a step-motor counter or LCD counter for energy measurement. It also provides an energy pulse output for testing with a pulse width of 80±20ms.

Important Technical Specifications

General:

• Meter type: DTS238-7 WiFi
• Rate frequency: 50 or 60 Hz
• Rated current: 1.5(6)A, 5A/CT, 5(60)A, 10(80)A
• Rate voltage: 3x120/208V, 3x220/380V, 3x230/400V, 3x240/415V
• Normal voltage range: 90%Un~110%Un
• Limits voltage range: 70%Un~120%Un
• kWh Accuracy: Class 1
• R.M.S accuracy: Class 0.5
• Pulse constant: See meter
• RS485 port: MODBUS-RTU protocol, 1200/9600bps, None parity, default 9600bps
• WIFI: 802.11b/g/n, only supports 2.4GHz network, does not support 5GHz network
• Delayed power on/off time: 60+5s
• Overvoltage/undervoltage/overload event judgment time: 3s
• LCD: 6+2 (999999.99kWh)
• Average-life: At least 10 years in normal operation

Protection Values (default, settable via APP):

• Overvoltage protection value: 270V+1
• Overvoltage recovery value: 260V+1 (APP overvoltage value - 10V)
• Undervoltage protection value: 170V+1
• Undervoltage recovery value: 170V+1 (APP overvoltage value + 10V)
• Overload protection value: 65A
• Delay on/off control: 00:01:24:00 Hour

Basic Tolerance:

• Direct connection (Power factor 1):
  • 0.05IbI<0.1Ib: ±1.5
  • 0.1Ib≤IImax: ±1.0
• Direct connection (Power factor 0.5(L) 0.8(C)):
  • 0.1IbI<0.2Ib: ±1.5
  • 0.2Ib≤IImax: ±1.0
• CT connection (Power factor 1):
  • 0.02IbI<0.05Ib: ±1.5
  • 0.05Ib≤IImax: ±1.0
• CT connection (Power factor 0.5(L) 0.8(C)):
  • 0.05IbI<0.1Ib: ±1.5
  • 0.1Ib≤IImax: ±1.0

Self-consumption:

• Current circuit: Less than 1.5VA / each phase
• Voltage circuit: Less than 2W/8VA each phase

Starting current: Under rated voltage, rated frequency, and COS=1, the meter starts and continues to register on application of 0.2% In (if CT is used) or 0.4% Ib.

Anti-creeping: The meter has an anti-creeping logical circuit. When 115%Un is connected and the current circuit is cut, the meter will not create more than one pulse in a stipulated time.

Usage Features

Installation: The meter is designed for installation on a 35mm DIN rail. It should be installed in a waterproof box, either indoors or outdoors, fixed on a strong and flame-resistant wall at a recommended height of about 1.8m, away from corrosive gases. All connections should be made fully in accordance with the connection diagram on the terminal cover, preferably using copper wire, with all screws tightened.

APP Control and Monitoring: The meter can be connected to a 2.4GHz WiFi network and controlled via a mobile APP (WISEN software).

• Adding Device: After powering on, pressing the setting button for 5 seconds puts the meter into WiFi distribution network waiting status (WiFi LED flashes 1s interval). Once connected, the WiFi LED lights on for 5s and then off for 0.1s. Users can then add the device in the APP by selecting "Plug" and confirming the WiFi network account and password.
• Display Items: The LCD displays various parameters including impulse constant, total active energy, import active energy, export active energy, interval active energy, A/B/C phase real current, A/B/C phase real voltage, total conjunction active power, A/B/C phase real active power, total conjunction reactive power, A/B/C phase real reactive power, total conjunction power factor, A/B/C phase real power factor, and frequency.
• Control Functions:
  • Control Button: Used to turn the meter output on/off.
  • Reset Button: Used to reset the total active energy to zero (total active energy will not reset if the down bond button is pressed for 5s).
  • Timing Button: Used for timing control (on/off) and time delay control (on/off). Time control can be set for specific times or as a cycle control for selected days of the week. Time delay control can be set from 1 minute to 24 hours.
  • Setting Button: Used to set protection values (voltage high/low limit, current high limit), unit price, and starting active energy value.
• Prepayment Function: If enabled, users can purchase kWh energy. The APP will write the balance kWh to the meter. When the balance reaches zero, the meter automatically cuts off the load. Disabling prepayment restores normal function.
• Protection Logic: Overvoltage, undervoltage, and overload events must last 3 seconds for the meter to cut off. It will delay 60 seconds to confirm voltage and current recovery to normal status before automatically switching back on.
• History Data: The APP displays the last 7 days and 30 days of total active energy consumption and total active energy cost (if applicable).
• Meter Detail: Shows RMS values, bi-direction active energy, and contrast active energy.
  • Import active energy: Total positive active energy.
  • Export active energy: Reverse active energy (e.g., solar power generation).
  • Total active energy: |Import active energy| + |Export active energy|.
  • Contrast active energy: Used to compare kWh running with the power company meter or other kWh meters.
• Management: Users can change the meter's name and delete it from the device list.

Maintenance Features

Transportation and Storage:

• Heavy impact should be avoided during transportation and unpacking.
• Products should be stored in their original packaging in a place with temperatures between -40°C and +70°C, relative humidity less than 75%, and no corrosive gases.
• When stored in a warehouse, meters should be placed on shelves, with no more than 7 cartons piled vertically. Single-packed meters should not be piled up more than 5 meters high.

Warranty: The meter comes with a 12-month warranty from the date of sale. If the meter does not meet its technical specifications due to correct operation according to the user's manual, it will be repaired or replaced free of charge by the manufacturer.

Hiking DTS238-7 Specifications

General

Brand	Hiking
Model	DTS238-7
Category	Measuring Instruments
Language	English