ETEK EKR0 IoT Smart Devices User Guide

www.etek-china.com
IoT Smart Devices
Always for your safety

ZHEJIANG ETEK
ELECTRICAL TECHNOLOGY CO., LTD.
Always for your safety

Company Introduction

Zhejiang ETEK Electric Technology Co., Ltd. (Abbreviation: ETEK Electric) is a professional manufacturing company dedicated to the research, development, production and sales of low-voltage electrical appliances. The company was established in 2011 and is  located in Wenzhou City, Zhejiang Province. At present, the company has a modern factory building of more than 12,000 m® ETEK Electric focuses on the low-voltage electrical fieldwide and has advanced production management systems and production  processes. Its products cover electrical safety products for household, commercial, industrial and similar facilities, such as Miniature Circuit Breakers (MCB), Residual Current Devices (RCD), Isolating Switches, Molded Case Circuit Breakers (MCCB),  Distribution Board, AC Contactors, Surge Protectors (SPD), loT Smart Circuit Breakers and Electric Vehicle Charging Facilities (EV Charger), etc.
Relying on hard work and innovation, ETEK Electric’s products quickly stand out in the fiercely competitive electrical  market. With its own brand ‘ETEK, it has successfully entered the international market and signed overseas brand agency contracts with  customers from many countries and regions. Its products are exported to the Europe, South America, Middle East, Africa, South Asia and other more than 60 countries and regions.
ETEK Electric always insists on providing customers with safe and reliable electrical products. The company has obtained 1ISO9001 quality system and RoHS environmental management system certification, and most of its products have also obtained CE, CB,  TUV, UKCA, SEMKO, VDE, SAA and other certifications.
ETEK Electric is committed to solving the pressure and challenges of customers and creating value for customers. ETEK Electric has rich industry experience and a dynamic, professional and efficient team, we can provide customers with the best OEM, ODM  services.
Growth, Efficiency, Innovation and Quality are ETEK’s business goals. We are firmly committed to the field of low voltage electrical products which is your trusted partner.
We hope our products can guarantee the power safety of global users and promote the development of green energy.

SMART CIRCUIT BREAKERS

Smart circuit breaker is an electronic device that operates the circuit breaker to open or close, monitor and collect the usage status of the circuit and the load device through the remote control. The smart circuit breaker can feedback and record the information  status of circuits and equipment in real time through the Internet.
It can be remotely controlled using multiple protocols, such as RS485, WiFi, 4G/5G, etc. At the same time, collect some data in the device circuit, so that we can use the device in a more reasonable combination, so as to improve the effectiveness of power supply.
ETEK Electric provides you with 3 different series of smart circuit breaker products: EKRO, EKR3 (automatic reclosing is optional), EKR3S, which can meet the different needs of different customers.

Application
It can be widely used in power grid terminal lines, unattended mobile phone base stations, elevators, air conditioners, smart phones, smart homes, smart factories, new energy vehicle charging piles, etc.

Difference between EKRO, EKR3, EKR3S

Overview

The EKRO series smart residual current operated circuit breaker (RCBO) is suitable for indoor, AC 50Hz, rated voltage 230V/400V, rated current not exceeding 63A, industrial, commercial, civil buildings, and infrastructure low-voltage terminal distribution  systems in buildings and similar places. It can also be used for infrequent on-off operations. This product integrates information collection and remote intelligent control. In addition to the overload, short circuit, and leakage protection functions of traditional leakage circuit breakers, the product also has functions such as remote control (Tuya App, RS485), electrical parameter measurement, overvoltage/undervoltage self recovery, and fault alarm.

Features

• Automatic protection: It automatically completes the self check of leakage protection function at a fixed time, and has a self resetting overvoltage, undervoltage protection. It is equipped with automatic inspection, and when faults are eliminated, it will automatically recover without affecting normal power supply.
• Autonomous setting: Automatically limit power usage based on wire diameter selection under rated value, independently set distribution parameters (such as current, power, temperature, etc.), and remotely set electricity protection warning values.
• Fault prompt function: Intelligent monitoring of equipment operation status, timely protection of equipment and reminder to users in case of equipment abnormalities.
• Networking module function: Built-in networking modules (including WiFi, 4G, etc.) are used to display device status, fault information, electricity consumption statistics, etc. on the APP through networking transmission, and can be remotely controlled.
• Multiple working modes: with manual/automatic selection switch and mechanical locking function.
• Easy to install: Adopting a modular design scheme for small circuit breakers, it can be installed on a standard 35mm guide rail, and RS485 communication uses fast plug terminal wiring.

Instruction of Type code

Communication method:
1: Dry power connection + switch status feedback
2: WiFi (Tuya) + 485
3:Dry connection +485
4:4G+485
5:485

Technical Parameter

value: 22kw)
Pilot lamp| Three green LEDs
Settable parameters| Leakage detection, Overvoltage and undervoltage protection, Rated current, Voltage, power, Temperature, etc
Power consumption| <2w
Accuracy| Voltage and current accuracy 1%, electrical energy accuracy 2%
Type of protection (electric leakage)| ACA
Poles| 1P+N, 3P+N
Rated current| 16, 25,32, 40, 63A
Rated voltage| 1P+N: 230/240V, 3P+N: 400/415V
Rated frequency| 50/60Hz
Rated breaking capacity| 6000A
Rated sensitivity currents IAn| 30,100, 300mA
Residual current off-time under IAn| ≤ 01s
Rated residual making and breaking capacity IAm| 500A (In  ≤ 50A), 10In (In > 50A)
Rated impulse with standard voltage (1.5/50) Uimp| 4kv
Thermal release characteristic| (1.13-1.45)XIn
Magnetic release characteristic| B: (3-5) XIn, C: (5-10) X In, D: (10-20) XIn
Mechanical life| 4000 Cycles
Electrical life| 10000 Cycles
Operating temperature| -25°Cto+40°C
Terminal connection type| Cable/Pin-type busbar
Max. terminal size for cable| Max. 25mm?
Max. tightening torque| Max.2.5N.m
Installation method| Mounting on 35mm DIN rail
Connection| From Top

Voltage, Current, Temperature Settings

Number| Protection type| Initial state| Initial value| Setting range| Recovery value
---|---|---|---|---|---
1| Overvoltage| Disabled| 60S| 280V| 5-600S| 100-450V| 60S| 275V
2| Undervoltage| Disabled| 60S| 115V| 5-600S| 5-400V| 60S| 120v
3| Overcurrent| Disabled| 55| 100A| 5-600S| 0.01-120A| /| /
4| Over power| Disabled| 55| 22kw| 5-600S| 0.01-50kW| /| /
5| Phase loss| Disabled| 60S| v| 5-600S| 100V| 60S| >2v
6| Voltage imbalance| Disabled| 60S| 2%| 5-600S| 1-10%| 60S| <2%
7| Overtemperature| Disabled| 308| 80°C| 5-600S| 90-85°C| 308| < 80°C

Application Example

Common Problems

1. Device network distribution failure
   If the device is not bound within ten minutes after installation and power on, it needs to be powered off and restarted before binding.
   If the device needs to reconfigure the network, briefly press the Reset button to clear the previous binding status.

2. Green light keeps flashing after installed
   Check if the toggle switch is at the right end upgrade position and should be turned to the left end operation position.

3. The device cannot be remotely closed
   Check whether the switch is manually opened. After manually closing it, operate it through the Tuya app or platform with RS485 connection to see if it can be opened.
   Check if the mechanical padlock is pulled out.

4. 485 device unable to communicate, sending open/close command, no action
   Please ensure that the equipment is in normal operation, and then check whether the A and B of RS485 cable are connected reversely, whether the communication Baud is set correctly, and whether the communication connection is abnormal.

5. No feedback on operation
   Check if the product wiring terminals have been tightened
   Check the APP settings, notification type, and whether message notifications are allowed to be tumed on

6. After power on, the indicator light does not light up
   Check if the power interface is reversed and if the switch power output has power.

7. LED light status description

Operating handle| Manually move the circuit breaker up and down to control the opening and closing of the circuit breaker, with upward indicating the closing and downward indicating the opening
---|---
Contact position indication window| Red represents closing, green represents opening
Network status light| Flashing 300ms off, 300ms on| Connected to the network
Flashing 300ms off, 300ms on| Remote upgrade
Flashing 100ms off, 1900ms on| Connection to the server successful
Alarm light| 100ms on, 400ms off| Mechanism locked
100ms on, 900ms off| Manual opening
Extinguish| No alarm
500ms flashing| With alarm
Hardware fault light| Solid light| Press the key to reboot into boot
Extinguish| Trouble-free
100ms on, 400ms off| Mechanism failure
100ms on, 100ms off| Metering fault

Product Size and Wiring Method

Overview

EKR3 series remote control mechanism is a compact smart control unit with a width of only 18mm. It can be adapted to MCB, RCCB (under development), and RCBO produced by ETEK Electric. Remote distribution of circuit breaker equipment can be realized  through Tuya APP or a platform connected to RS485. Closing and timing switch to obtain the switching status of the equipment. At the same time, the control module can provide automatic reclosing function, when a temporary failure occurs in the power  system, the product will automatically reclose after tripping to improve the reliability of the circuit power supply.

Description of Automatic, Manual Mode Switches and Mechanical Lock

AUTO Mode
Allow remote control (Tuya APP, RS485).

MANU Mode
Remote operation is prohibited.

Mechanical Padlock
When the mechanical lock is pulled out,  the device will enter the locked state, and the device will not be closed. Press the mechanical lock to restore it.

Functional Characteristics

• It is matched with a MCB or RCCB or RCBO to provide overload, short circuit and leakage protection. When the switch trips accidentally, it does not need to be closed manually, reducing manual maintenance costs, timely troubleshooting and improving efficiency.
• Remote opening and closing control, timing tasks, and obtaining the current switch status can be realized through Wi-Fi or a platform with RS485 connection.
• Built-in multiple times of reclosing, continuous closing failure within a certain period of time can send an alarm signal through the LED indicator or APP (for specific time and times, please refer to the parameter table, and can also be set and adjusted  according to needs).
• With manual/automatic selection switch and mechanical lock function.

Automatic Reclosing Function

How Auto-Recloser Works
Auto-reclosing
In the auto state, after the fault trips and meets the closing requirements, the equipment will reclose according to the time set by the reclosing switch.
If the device fails to close within the specified time, the device will no longer reclose, and at the same time output an alarm signal (via Tuya App or RS485).
In this state, opening and closing can be achieved through remote control or manual control.

Auto reclosing successful
If the switch is successfully closed, it will no longer trip within the specified time (15 minutes for EKR3-WiFi, 60 seconds for EKR3-RS485), which is defined as successful switch-on. After successful switch-on, the number of frequency the device has been  reclosed is automatically cleared, and the counter restarts count.
(Any opening and closing behavior  controlled by humans will clear the number of reclosing times)

Automatic, Manual, Padlock mode
AUTO mode, manually open the circuit breaker, the default is fault trip, and the device will start to automatically reclose according to the program setting.
MANU mode, the automatic reclosing and remote control functions will be invalid, and the brake can be opened or closed manually.
Pull out the mechanical padlock on the module, and the device will enter the locking padlock mode to achieve local locking, ensuring that operators can perform maintenance work in a safe state.

Reclosing Function Diagram for EKR3-WiFi

TB: 9008, T1: 10S, T2: 60S, T3: 300S. (All times are default values, support customization)
Trip cause: Fault check includes over-voltage, phase loss, neutral disconnection, short circuit, earth leakage, manual opening.

When the circuit breaker is opened by an unknown fault (manual opening, short circuit trip, leakage trip, overload trip), it will automatically reclose, a total of 3 reclosing sequences, and each reclosing sequence time interval (T1, 2, T3).
After successful reclosing, if a trip occurs again within the stable time TB, it will enter the next reclosing sequence, otherwise, if no trip occurs within TB, the reclosing sequence will be cleared. If the circuit breaker fails to reclose after 3 times of reclosing, manual closing or remote control closing is required to clear the fault.

Indicator Light Description

Green light is always on| Connect to cloud server
Green light flashes for 100ms| Mechanism failure
Green light flashes on for 100ms and off for 900ms| Manual, Padlock mode
Green light flashes for 500ms| Configuration network
Green light flashes for 5000ms| Connect to router
Green light flashing 100ms off 900ms on| Within the time TB
Green light flashing 1700ms off 100ms on 100ms off 100ms on| Automatic reclose waiting time T (T2, T3)

Reclosing Function Diagram for EKR3-RS485

TB: 60, T1: 60S, T2: 90, T3: 1800S, T4: 27008, T5: 3600S. (Reclosing time “TB” can be set, if you have other needs, please confirm before placing an order.)

When the circuit breaker is opened by an unknown fault (manual opening, short- circuit tripping, leakage tripping, overload tripping), it will automatically reclose, a total of 5 reclosing sequences, and each reclosing sequence time interval (T1,T2, T3, T4,T5).
After successful reclosing, if a trip occurs again within the stable time TB, it will enter the next reclosing sequence, otherwise, if no trip occurs within TB, the reclosing sequence will be cleared. If the circuit breaker fails to reclose after 5 times of reclosing, manual closing or remote control closing is required to clear the fault.

Indicator Light Description

Red light is always on| Auto Mode Trip
Red light flashes for 100ms| Auto Mode – Motor Reset Failed or Cycle Close Failed
Red light flashes for 500ms| Auto mode overvoltage and undervoltage trip
Green light is always on| Auto mode closing, remote opening, signal opening
Green light flashes for 100ms| Automatic reclose waiting time
Yellow light is always on| Manual mode opening, closing

Instruction of Type code

Technical Parameter

Second time: 60 seconds;
Third time: 300 seconds;
Customizable, cannot be changed after initial setup| First time: 60 seconds;
Second time: 90 seconds;
The third time: 1800 seconds;
Fourth time: 2700 seconds;
Fifth time: 3600 seconds;
Adjustable time setting range: 60-3600 seconds.
Reset reclosing times| No more tripping or manual reset within 15
minutes after successful closing| No tripping or manual reset within 60 seconds
after successful closing, Adjustable time setting range: 5-600 seconds.
Mechanical life| 10000 Cycles
Electrical life| 4000 Cycles
Ambient temperature| -20°Cto +55°C (-4 °F to 131 °F )
Storage temperature| -35°Cto +75°C(-22 °F to 158 °F )
Installation| Mounting on 35mm DIN rail
Pollution degree| P20
Supply terminal size for cable| Max. 2.5mm?*
Dimensions| 91X18X61mm
Compatible Device| MCB (EKM3-63), RCBO (EKL3-63, EKL13-63), from ETEK (More compatible devices are in development)

Fault Description

1. The Device Cannot be Closed Remotely?
   Check whether the remote lock is turned on in the APP.
   Check whether manual opening has been carried out First, manually close and then operation the APP to check if it can be closed and opened.
   Whether the mechanical padlock is pulled out or not.

2. 485 Device cannot communicate, send opening/closing command, no action?
   Please ensure that the device is in normal operation, and then check whether A and B of the RS485 line are reversed, whether the communication baud rate is set correctly, and whether there is any abnormality in the communication connection.

3. Operation Without Feedback?
   Check whether the product terminals have been tightened.
   Check the APP settings, notification type and whether the message notificationis enabled.

4. After Power On, The Indicator Light Does Not Light Up?
   Check whether the power interface is reversed, whether the switching power supply output has power or not.

5. LED light status description (Without reclosing)****
   WiFi, ZIGBEE

   Green light is always on| Connect to cloud server
   Green light flashes for 100ms| Mechanism failure
   Green light flashes for 100ms| Padlock mode
   Green light flashes for 500ms| Configuration network
   Green light flashes for 5000ms| Connect to router
   RS485, Dry contact
   Red light is always on| Auto Mode Trip
   Red light flashes for 100ms| Auto Mode – Motor Reset Failed or Cycle Close Failed
   Red light flashes for 500ms| Auto mode overvoltage and undervoltage trip
   Green light is always on| Auto mode closing, remote opening, signal opening
   Green light flashes for 100ms| Automatic reclose waiting time
   Yellow light is always on| Manual mode opening, closing

MCB EKM3-63 Technical  parameters

EKR3 with EKM3 – 63 Product Size and Wiring Method

RCBO EKL13-63 Technical  parameters

voltage(selectable)
Type of trip| Ground fafjlt: .Electronic
Overload and short circuit: Thermo-magnetic
Type of protection (electric leakage)| AC,A
No.of poles| 1P+N 2module, N line with disconnected
Rated currents (In)| 6,10,16,20,25,32,40,50,63A
Rated sensitivity currents I n| 10,30,100,300mA
Residual current off-time under I n| <0.1s
Rated residual making and breaking capacity (I n)| 500A (In < 50A), 10In (In>50A)
Rated voltage (Ue)| 230/240V~
Rated frequency| 50/60Hz
Rated breaking capacity| 6,000A
Energy Limiting Class| 3
Rated impulse with standard voltage(1.5/50) Uimp| 4,000V
Dielectric| 2kV
test voltage at Ind. Freq.Freq 1 min| (1.13-145)xIn
Thermal release characteristic| B: (3-5)x1In, C: (5-10) x In
Magnetic release characteristic| 4,000 Cycles
Mechanical life| 10,000 Cycles
Contact position indicator| Yes
Ground fault indicator| Yes
Protection degree| 1P20
Ambient temperature| -25°C to +40°C , Max.95% humidity
Terminal connection type| Cable/Pin-type busbar/Fork-type busbar
Max.terminal size for cable| 25mm’
Max.tightening torque| 2.5N.m
Installation| Mounting on 35mm DIN rail
Connection| From top and bottom

EkR3 with MCB EKL13-63 Product  Size and Wiring Method

Overview

EKR3S smart circuit breaker, using electronic technology to control the normal operation of traditional circuit breakers, can monitor equipment status information in real time, including voltage, current, temperature, power, power consumption and various fault states (overvoltage, undervoltage, overload, overtemperature, etc.) Information, etc. can be reported to the client, and the protection threshold can also be set by itself.
This product is an independent integrated equipment device, you can view some information of the device and set related parameters, and the operation is more humanized. After the product is connected to the Internet, it can display product information,  remote control, timing, etc. on the Tuya APP.

Features

• It can realize remote control and closing through Tuya APP, and can also be controlled regularly.
• The single-phase smart circuit breaker can monitor power parameters and power parameters in real time.
• Mechanical padlock, after being pulled out during maintenance, cannot be closed locally and remotely to ensure the safety of maintenance operations.
• With overcurrent and overload protection functions, the protection threshold can be set.
• It has the function of over-under-voltage and over-temperature protection, at the same time, you can set the alarm reminder through the Tuya APP.

Instruction of Type code

Technical Parameter

Voltage, Current, Temperature Settings

Number| Protection type| Initial state| Initial value| Setting range| Recovery value
---|---|---|---|---|---
1| Overvoltage| Disabled| 60S| 280V| 5-600S| 100-450V| 60S| 275V
2| Undervoltage| Disabled| 60S| 115V| 5-600S| 5-400V| 60S| 120v
3| Overcurrent| Disabled| 55| 100A| 5-600S| 0.01-120A| /| /
4| Over power| Disabled| 55| 22kw| 5-600S| 0.01-50kW| /| /
5| Phase loss| Disabled| 60S| pil| 5-600S| 1o0v| 60S| >2V
6| Voltage imbalance| Disabled| 60S| 2%| 5-600S| 1-10%| 60S| <2%
7| Overtemperature| Disabled| 308| 80°C| 5-600S| 90-85°C| 308| <80°C

LED Status Description

overload
Red light flashes for 1000ms| The automatic cycle closing fails, and the automatic closing fails
Green light is always on| automatic mode: manual closing, command closing, automatic closing, signal closing, timing closing, Remote opening, signal opening, timing opening
Green light flashes for 100ms| Network configuration status (priority display)
Green light flashes for 500ms| WiFi connected to the router (4G is networking)
Green light flashes for 1000ms| Automatic coincidence, stable
Red and green light flashing alternately for 100ms| Mechanism failure
Red and green light flashing alternately for 1000ms| Boot upgrade mode or OTAupgrade
Yellow light is always on| Manual mode
Light flashes for 100ms off 1900ms on| The light of the continuous display of successful networking is switched to this mode, regardless of the red light, green light, orange light, fault status priority display fault indication

Product Size and Wiring Method

Applicable Scope
EKWF WiFi smart switch controller cooperate with the corresponding APP to realize the following functions:

• Support smart configuration for fast networking.
• Support multiple control types: switch, timer switch, cycle control, etc.
• Support WLAN local control and remote control.
• Access to mainstream voice-activated assistants such as Tmall Genie, Duer0OS, Xiao Ai, Alexa, Google, etc, Voice-activated smart device sharing and cloud account device sharing function.
• APP support Android and iOS systems.
• Application: Home control system, Building automation, Industrial control system, Medical and electrical equipment.

Modular Contactor

(Example: EKWF-T02, Tuya, assembled)

Technical Data

Normal operation temperature range: -5°C ~+40°C.
The 24-hour average temperature should not exceed +35°C.
For use beyond the normal operation temperature range.
Altitude| Not exceeding 2000 m above sea level
Atmospheric conditions| The relative humidity should not exceed 50% at the upper temperature limit of +70°C.
Higher relative humidity is allowed at a lower temperature, e.g. 90% at +20°C.
Special precautions should be taken against occasional condensation due to humidity variations.
Installation conditions| The angle between the installation surface and the vertical surface should notexceeding £5°.

Installation

1. First, we need to use the hook at the lower right side of the WiFi controller.
2. Then we install conductive connectors at NO(AL) and N (A2).

User Guide

1. Search for “Tuya” or scan this QR code to download and install Tuya APP.

2. Allow all permissions during installation.

3. Register an account and login.

4. Add device: Press and hold the black button for about 7 seconds until the WiFi indicator flashes quickly.
   (flashes twice for one second)

5. Click the Add button on the Tuya Smart APP.

6. Select “Quick Mode (Touch)”, the next step.

7. Enter the WiFi password that the phone is currently connected to.

8. Name the device and complete adding.

9. When the WiFi indicator light of the device is always on, remote control can be performed.

Scope of Application
EKWF series WiFi intelligent switch controller, the shell is made of PC flame retardant material, which is safer to use; The maximum load of 230v/2a can be extended to 125A through the contactor, using standard WiFi: 2.4GHz b/g/n.

Automatic Type Product Selection Form

Modules| Contactor Model| Rated Current| Coil voltage vac| Circuit Diagram
---|---|---|---|---
AC- 1, AC – 7a| AC-3, AC 7b
| EKWF+EKMF1620| 16A| 6A| 24
110
230|
EKWF+EKMF2020| 204| A
EKWF+EKMF2520| 25A| 9A
EKWF+EKMF1602| 16A| 6A|
EKWF+EKMF2002| 204| A
EKWF+EKMF2502| 25A| 9A
| EKWF+EKMF3220| 324| 12A| 2%
110
230|
EKWF+EKMF4020| 400| 18A
EKWF+EKMF6320| 63A| 25A
EKWF+EKMF3202| 324| 12A|
EKWF+EKMF4002| 400| 18A
EKWF+EKMF6302| 63A| 25A
| EKWF+EKMF1640| 16A| 6A| 24
110
230
330|
EKWF+EKMF2040| 204| A
EKWF+EKMF2540| 25A| 9
EKWF+EKMF1604| 16A| 6A|
EKWF+EKMF2004| 20A| 7A
EKWF+EKMF2504| 25A| 9A
| EKWF+EKMF3240| 2A| 124|
EKWF+EKMF4040| 40A| 18A
EKWF+EKMF6340| 63A| 25A
EKWF+EKMF3204| 2A| 124|
EKWF+EKMF6304| 40A| 18A
EKWF+EKMF4004| 63A| 25A
| EKWF+EKMF8020| 80A| 24| 24
110
230|
EKWF+EKMF10020| 100A| 40A
EKWFEKMF12520|  125A| 50A
EKWF+EKMF8011| 80A| A|
EKWF+EKMF10011| 100A| 40A
EKWF+EKMF12511| 125A| 50A
EKWF+EKMF8002| 80A| 2A|
EKWF+EKMF10002|  100A| 40A
EKWF+EKMF12502| 125| 50A

Overall and Installation Dimension (mm)

Connection Diagram

http://www.etek-china.com

Tel-
0086-577-62780116
Fax-
0086-577-62774090
Email-
[email protected]
No. 288 Wei 17th Road, Economic Development Zone, Yueging City Zhejiang China.

ZHEJIANG ETEK
ELECTRICAL TECHNOLOGY CO.,LTD.

Documents / Resources

| ETEK EKR0 IoT Smart Devices [pdf] User Guide
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