5(60)A 110V 230V 50HZ 60HZ Single phase Din rail WIFI smart energy meter Kwh over and under voltage current protection RS485

Please noted if you use the meter for 110V, You have to adjust the over and under voltage value, or the meter cut off the power because under voltage protection.

Noted: there are lan settings, you can control locally.

1. Wifi:  control by phone, remte control ON/OFF at anytime from anywhere

2. Over voltage and under voltage protection set by phone

Over voltage 100-300V adjust by phone (default: 275V) 

Under voltage protection 100-300V adjust by phone (default: 175V)

Please noted if you use the meter for 110V, You have to adjust the over and under voltage value, or the meter cut off the power because under voltage protection.

The meter cut off the power in 3s when over or under voltage, reconnect in 30s

3. Timer

4. Over current protection 1-65A adjustable (default 65A)

5. Energy meter with RS485

6. Prepayment function.  can set prepaid, when the electricity is used up, it will automatically trip to remind the user to re-purchase the electricity. can set prepaid, when the electricity is used up, it will automatically trip to remaind the user to repurchase the electiricity.

 

Display item

	INFORMATION	LCD DISPLAY
01	Impulse  imp/kWh	C  0000
02	Total energy kWh	000000.00
03	Positve kWh	00000.00
04	Reverse kWh	-00000.00
05	Reset energy	EP0000.00
06	Real voltage V	U 000.0
07	Real current A	A 00.00
08	Real active power W	P 0.0
09	Real reactive power Var	P 0.0
10	Power factor COSФ	PF 0.00
11	Real frequency Hz	F 00.00
12	Meter serial high 6 digits	H 000000
13	Meter serial low 6 digits	L 000000
14	MODBUS ID	001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If the wifi is weak, you can choose the meter with antenna

1. General Description

       DDS238-4 W type multi-function smart energy meter is designed to measure single phase two 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 single 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

Meter type	DDS238-4 W
Rate frequency	50 or 60 Hz
Rated current	5(60)A
Rate voltage	120V / 220V / 230V /240V  L+N
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 support 2.4GHz network , not support 5GHz network

2.2 basic parameters

Delayed power on/off time	60+5s
overvoltage / undervoltage / overload  event judgment time	3s
Overvoltage protection value	270V+1(default),APP can set value
Overvoltage recovery value	260V+1(default)= (APP overvoltage value – 10V)
Undervoltage  protection value	170V+1(default),APP can set value
Undervoltage recovery value	170V+1, (default)= (APP overvoltage value + 10V)
Overload protection value	65A(default),  APP can set value
Delay on/off control	00:01—24:00 Hour

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: when it happens interrupt power-supply , the meter will not cut off , undervoltage event must last 3s , then it will cut off.  

2.2 Technical Parameters

2.2.1 Basic tolerance

Load current(A)	Power factor (CosΦ)	Basic error(%)
		1.0 class	2.0 class
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(advanced)	+1.5
02Ib—Imax	0.5(lag)	+1.0	+2.0
	0.8(advanced)	+1.0

 

2.2.2 Self-consumption

Current circuit is less than 1.5VA

Voltage circuit is less than 2W/8VA

2.2.3 Starting current

       Under the rated voltage , rated frequency and COSΦ=1 , the meter shall start and continue to register on application of 0.2% In (if CT is used) or 0.4% Ib .

2.2.4 Anti-creeping

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

2.2.5 Average-life

       The meter can be used for at least 10 years in normal operation specified in this manual

2.2.6 LCD: 6+2 (999999.99kWh) 

3.Basic Features

3.1 Measuring positive & negative active energy with negative energy accumulated into positive energy,.

3.2 The meter also display three phase real voltage , real current , real active power , real power factor , real frequency

3.3 Pulse LED indicates working of meter,Pulse output with optical coupling isolation                    18~27V 27mA .

3.4 RS485 communication port and WIFI communication

3.5 Measuring active energy without calibration under long term operation

3.6 display step by step with button

3.7 it can use APP software for data reading and remoter control on/off.

3.8 it has overvoltage and undervoltage protection , it can set value from APP

3.9 it has overload protection ,it can set value from APP

3.10 it has timing control function , it can set value from APP

3.11 it can reset the active energy to zero from APP

4.Working principles

       Single phase voltage and current are sampled from respective sampling circuit and transformed into suitable signal, which is carried into integrated circuit , then the meter output pulse signal in positive appropriation to measured power to drive step-motor counter or LCD counter to realize energy measurement. The meter has energy pulse output for testing with pulse width of 80+20ms

              Diagram for Working Principles

5. Structure

          The meter consists of meter base , meter cover , terminal base , terminal cover . there are lead seal on meter cover  and terminal cover . A special screw is used to fix the terminal cover on which a lead seal can be installed

6. Usage

6.1 schematic diagram

 WIFI led indication, if you push the setting button last 5s, the WIFI led will flash 1s interval ,its means meter enter into the status of waiting for WIFI distribution network . if WIFI led light on 5s , light off 0.1s ,it means meter connect the WIFI successfully.

 Impulse led indication: it will flash with different speed according the current load of the meter

 Relay led indication:  the led light off means relay switch on, the led on means relay switch off .

Down bond: you can push this button to check the different data display , it will reset the resettable active energy to zero when you push this button last 5s ,but total active energy will not reset.

Setting button: if you push the setting button last 5s ,meter will enter into the status of waiting for WIFI distribution network .if you want to reset status of WIFI distribution network, you also can push the setting button last 5s.

6.1 Connection diagram

Terminal 1 and 2 is for RS485 port , 2A and 1 B    ,Impusle 6+ 5-

6.2 Installation

The meter can be installed on a 35 mm DIN rail

6.2.1 The meter can not installed and used until it is checked goods and sealed before delivery

6.2.2 The meter should be install in the water proof box indoor or outdoor . the meter’s box should be fixed on strong and flame-resistant wall with a recommended height of about 1.8 m , where there is no corrosive gas around .

6.2.3 The meter should be install fully in accordance with connection diagram on the terminal cover, it is better to use copper as the leading wire for connection. All screws should be tightened. 

6.2.4 Diagram for installation dimension

7. Transportation and Storage

7.1 Heavy impact should be burdened to the products while transportation and unpacking.

7.2 The products should be stored in the original package and kept in place with temperature between -40°～+70°,the relative humidity less than 75% and no corrosive gas around .

7.3 In storehouse , the meter should be placed on the shelf when kept in stock , there should not be more than 7 cartons piled up in vertical. Single-packed meters can not be piled up with more than 5 meters in vertical.

8. Warranty period

   Within 12 months from the day of selling and provided that users operate correctly according to the requirement of the user’s manual , if the meter doesn’t reach its technical specification. It can be repaired or replaced in free f charge by the manufacturer .

9. Frame format

1. Read command(function code 03)

Send frame

Meter ID	Function code	Register address	Data number	Check code (CRC)
1byte	1byte	2byte	2byte	2byte

Receive frame

Meter ID	Function code	Data length n	Data area	Check code (CRC)
1byte	1byte	1byte	n byte	2byte

1. Write command(function code 10)

Send frame

Meter ID	Function code	Register address	Data number	Data length n	Data area	Check code (CRC)
1byte	1byte	2byte	2byte	1byte	n byte	2byte

Receive frame

Meter ID	Function code	Register address	Data number	Check code (CRC)
1byte	1byte	2byte	2byte	2byte

1. Energy meter register address

Register address	Data number	Data item	Data format	Data unit
0x0000	2	Total kWh	XXXXXX．XX	kWh
0x0001
0x0008	2	Export kWh	XXXXXX．XX	kWh
0x0009
0x000A	2	Import kWh	XXXXXX．XX	kWh
0x000B
0x000C	1	Voltage	XXX．X	V
0x000D	1	Current	XX．XX	A
0x000E	1	Active power	XXX．XXX	kW
0x000F	1	Reactive power	XXX．XXX	kvar
0x0010	1	Power factor	X．XXX
0x0011	1	frequency	XX．XX	Hz
0x0015	1	ID + baud rate	First byte is ID,the second byte is baud rate,01~04 is means Respectively 9600.4800.2400.1200

Note 1:  one register address is store 2 byte data ,so the data length read as 4 byte when data number is 2 .

Note 2::you can use ID ID(0x00) to broadcast and got data when you do not know the meter ID. But this ways is only for 1 pcs meter to connection on RS485 wire

10. Display item

	INFORMATION	LCD DISPLAY
01	Impulse  imp/kWh	C  0000
02	Total energy kWh	000000.00
03	Positve kWh	00000.00
04	Reverse kWh	-00000.00
05	Reset energy	EP0000.00
06	Real voltage V	U 000.0
07	Real current A	A 00.00
08	Real active power W	P 0.0
09	Real reactive power Var	P 0.0
10	Power factor COSФ	PF 0.00
11	Real frequency Hz	F 00.00
12	Meter serial high 6 digits	H 000000
13	Meter serial low 6 digits	L 000000
14	MODBUS ID	001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Install APP

1.Please search “WISEN” on Android Google Play or Apple APP store to download software

2.Meter input power

When the meter power on , you can push the setting button last 5s , meter enter into the status of waiting for WIFI distribution network and  the WIFI led will flash 1s interval .

its means meter enter into the status of waiting for WIFI distribution network . if WIFI led light on 5s , light off 0.1s ,it means meter connect the WIFI successfully.

3.Add device

Please check firstly that your telephone have connected the available WIFI network , then click the “add device “ button .now the meter  only used under 2.4GHz WIFI network , it can not use under 5GHz WIFI network .

Select the WIFI distribution network

Select the Plug

 

You can push the setting button last 5s , meter enter into the status of waiting for WIFI distribution network , then click confirm button

 

Input the WIFI network account and password , then confirmed to next step

 

if WIFI led light on 5s , light off 0.1s ,it means meter connect the WIFI successfully.

 

Note: WIFI led status

1. flash 1s interval : meter enter into the status of waiting for WIFI distribution network
2. light on 5s ,light off 0.5s : meter have connect the WIFI and login in cloud serve

APP Menu instruction

The meter will display online or offline after you add the device successfully .

You can click the device to check the meter detailed information

You will see the active energy data and remote control button and timing setting button in the menu

Control button : used for control on / off of meter output

Reset button: used for reset the total active energy to zero

Timing button: used for timing control on/off and time delay control on/off

1. time control :you can add the time which is control and which is control off ,if you do not select week , it will save as single time control . if you select the week, it will save as cycle control .
2. time-delay control : you can set 1minute to 24hour max to time delay control. For example ,you can use delay time control to control off the Battery car charging after 2hours .

 

 

the meter do not have time clock internal ,the time control is decide to cloud serve, so make sure the meter connect the available WIFI network.

3.Setting button : for protection value and unit price ,starting active energy value setting .

 

Voltage high limit(V):  the overvoltage protection , it will cut off after high than this value.

Voltage low limit(V):  the undervoltage protection , it will cut off after lower than this value.

The voltage high limit value must bigger than the Voltage low limit value .

Current high limit(A): the overload protection, it will cut off after high than this value.

For overvoltage/undervoltage/overload event , these status must last 3 s ,so the meter will cut off for protection .it will delay 60s to confirm the voltage and current recover to normal status after cut off . it will switch on automatically after confirmed the value recover to normal status.

Starting kWh value :this value is used for calculating the “contrast active energy”. If the user want to know the power company meter have run how many after fixed time, you can input the current total active energy of the power company in here ! for example ,the power company meter is display 50kWh, you can input the 50kWh in the starting kWh value.

Meter price : how much price for each kWh

History kWh

historical information

This function not available at this moment.

Meter detail

It will show R.M.S value and bi-direction active energy and contrast active energy

Import active energy : it measure the total positive active energy

Export active energy : it measure the reverse active energy , such as solar power generation , reverse wire connection , some power generator working .

Normally, the total active energy= | Import active energy | + | Export active energy |

Contrast active energy : it is used for contrast the kWh running with the power company meter or other kWh meter .

R.M.S value all measure the Current instantaneous value

 

Home menu

 

Management : you can change the name of your meter and delete the meter from your device list

 

 

 

Smart interaction: you can use voice to control the meter on/off , now only support the Cat Elf smart sound and Echo smart sound device

 

 

CE EMC

 

CE  LVD

RoHS

Other Policies:

• We are not responsible for any custom duty or import tax.

• We will leave POSITIVE FEEDBACK after receiving the payment. Please contact us if you are not satisfied with the item after receive it.

• All emails will be answered within 1 business day. If you do not receive our reply, please kindly re-sent your email and we will reply to you as soon as possible.

• Serious Buyer Only! Please place bid only if you agree with all the terms