To meet market demand and enable precise electrical monitoring, we are thrilled to introduce expanded models of the SPM02 smart energy sensor, now featuring IEC 61557-12 Class 1 accuracy for active power and forward active energy.

The expanded models deliver highly accurate and reliable power monitoring solutions for buildings, industries, and infrastructures, adhering to the IEC 61557-12 standard for measurement tolerance as follows:

• Voltage: Class 0.5

• Current: Class 1

• Active power: Class 1

• Forward active energy: Class 1

The new Accuracy Class 1 model can be identified by the suffix “-CL1” added to the original ordering number. For example, customers can order the Class 1 version of the SPM02-D2TW by using the product code SPM02-D2TW-CL1.

For easy identification, the product features the “Cl.1” logo printed on the side, as shown below:

For any inquiries or additional product information, please feel free to contact our sales or technical support team.

Thank you for your continued trust and support in our products!

Date 2025-01-12

Product Management Team of BITUOTECHNIK

We are thrilled to announce the official release of BT PowerLink, our innovative mobile application now available on Google Play and the Apple App Store. This app is designed to provide users with a seamless and convenient way to connect Bituo Power Metering and Monitoring Devices (PMDs) via Bluetooth Low Energy (BLE), then read real-time data and configure Wi-Fi networks—all from their smartphones. With Bluetooth connectivity, BT PowerLink eliminates the need for a computer during setup, offering flexibility and ease of use.

The Inspiration Behind

BT PowerLink was developed in response to the growing demand for a smarter, more user-friendly way for Bituo PMD paring. Our previous method of configuring and monitoring ESP devices requires desktop software, which made the process cumbersome. Recognizing these challenges, we created BT PowerLink to empower users with a mobile-first approach, ensuring that device management is as intuitive and accessible as possible.

Addressing Common User Challenges

The app addresses several common issues faced by users when using our pairing and configuration PC software:

• Complicated Setup: Eliminates the need for reliance on computers during device configuration.

• Limited Accessibility: Provides instant access to device data and controls via a smartphone.

• Complex Interfaces: Features a user-friendly design that simplifies interactions with ESP devices.

Key Features of BT PowerLink

BT PowerLink boasts several standout features. It enables real-time interaction with Bituo ESP PMDs directly from a smartphone, significantly enhancing the convenience of device management. The app simplifies configuration and monitoring processes, saving users both time and effort.

Product Compatibility and Applications

This innovative application is compatible with the SPM/SDM EW series devices running firmware version 5.1.1 or later. It is particularly suited for applications in local area networks (LAN) and Bluetooth Low Energy (BLE) environments. By addressing the specific needs of these scenarios, BT PowerLink ensures a versatile and reliable solution for a wide range of users.

How to Use BT PowerLink

Using BT PowerLink is straightforward and intuitive. Upon launching the app, users can follow these simple steps:

1. Scan Nearby Devices: Enable Bluetooth, open the app, and scan for nearby devices.
   
   

   

           

   

    

2. Select and Connect: Choose the device you wish to configure and establish a connection.

3. Enter Configuration Details: Input the device password and Wi-Fi information to complete the setup.

4. Access Device Dashboard: View real-time energy data and control the device from the main dashboard.

Why Choose BT PowerLink?

BT PowerLink represents a significant step forward in simplifying Bituo ESP devices management and enhancing user experience. Whether managing devices in residential or industrial settings, this app ensures that configuration and monitoring are intuitive, efficient, and accessible from the palm of your hand. Besides, Home Assistant (HA) users can seamlessly integrate their devices through the Bituo PMD HAAS platform for an enhanced smart energy experience.

We invite you to explore our ESP products, easily configure them with the BT PowerLink app, and seamlessly connect to your energy management systems.

Dear Valued Customer :

Greetings!

Thank you for your continued trust and support of our products. To further enhance product quality and user experience, we have made an improvement to the way we mark our SPM02 products. We are writing to inform you of this change.

Change Details:

The previous N-line sticker marking on the product will now be replaced with N-line sleeve marking. Detail change as below pictures:

This change is intended to improve the durability and clarity of the markings, preventing the stickers from peeling or wearing off over time, ensuring the markings remain clear and visible.

Reason for Change:

As part of our ongoing efforts to improve product quality, we have conducted a comprehensive evaluation of our marking methods. The new sleeve marking offers greater stability and better withstands various environmental conditions, while meeting customer requirements for long-term marking reliability.

Affected Scope:

This change will apply to all SPM02 flexible mounting (SPM02-*2**) products produced moving forward. For products in your existing inventory, the original sticker markings will remain valid and will not affect the normal use of the products.

Effective Date:

Effective immediately, all new products will feature the updated sleeve marking. Please note this when placing future orders. Should you have any questions or need further confirmation, please do not hesitate to contact us.

We understand the importance of your needs, and we are committed to continuing to provide high-quality products and excellent customer service. If you have any questions or require additional information about this change, please feel free to reach out to our customer service team. We greatly appreciate your understanding and cooperation!

Thank you once again for your continued support and trust!

Date 2024-11-12

Product Management of Smart Energy Sensors

Bituo Technik

We are thrilled to announce the success of our participation at the HKTDC Hong Kong Electronics Fair (Autumn Edition), where Bituo Technik showcased its latest innovations in smart energy monitoring solutions. This year’s event gave us the opportunity to engage with a new audience, including overseas smart home brand owners and local supermarket wholesalers, many of whom expressed strong interest in our products.

At the forefront of our presentation were the SPM and SDM series of smart energy monitors. These devices are designed to deliver real-time energy monitoring, supporting both residential and commercial energy management needs. We also introduced the much-anticipated SDM02 model, which is set to launch soon. Attendees had the chance to explore SDM02’s advanced features, and the feedback we received was overwhelmingly positive. Many industry professionals highlighted its potential for enhancing home energy management systems with its easy integration into existing setups.

One of the key trends we observed at the fair was the extensive use and recognition of the Tuya platform. Most of the smart home brand owners we interacted with were already familiar with Tuya and had their own OEM Tuya apps. This strong alignment with our Tuya-supported products allowed our samples to stand out, resulting in excellent sales and meaningful discussions about potential partnerships.

In addition to our product showcase, we met with our long-standing Hong Kong partner to explore the exciting opportunities for LoRaWAN applications in the smart home sector. With the growing demand for efficient, scalable energy solutions, LoRaWAN technology has the potential to provide seamless, long-range communication for energy management and other IoT applications, further enhancing the capabilities of our smart energy monitors.

We are grateful for the valuable connections made at the event and are looking forward to driving new collaborations that help shape the future of smart home and energy management technologies. Stay tuned for the official release of the SDM02, and follow us as we continue to innovate and bring powerful energy solutions to the global market.

I. Overview

Bituo Technik proudly announces the release of a new Home Assistant integration plugin, Bituo PMD, specifically designed for the ESP series devices. Bituo PMD simplifies the connection and management of ESP devices, offering multiple configuration options to help users easily integrate these devices into the Home Assistant system, enabling smart energy monitoring and management. Bituo PMD has been developed with user needs in mind, aiming to streamline operations and enhance integration efficiency.

II. What Inspired Us

Previously, users had to rely on the complicated MQTT method to forward messages to Home Assistant, manually unpack data, rename it, assign values, and handle unit conversions. The process was tedious and error-prone. With the installation of Bituo PMD, users only need to ensure that their devices are on the same network as Home Assistant for quick and easy configuration, eliminating the need for such laborious steps.

III. Key Features

1. Fast Installation

Bituo PMD adheres to the official structure requirements of Home Assistant and HACS, allowing users to install it quickly via HACS.

2. Multiple Configuration Options

It offers three methods for device configuration:

• mDNS for ESP devices: These devices leverage the mDNS feature, recommended by Home Assistant, allowing for quick and accurate discovery and display in the user interface after installation.

• Zero Conf: Users can manually enable the Zero Conf feature to scan and detect devices on the network.

• Manual configuration: For older device versions without mDNS enabled, users can manually configure them by entering the device’s IP address.

3. Comprehensive Device Management

Bituo PMD includes all settings for ESP devices, allowing users to perform operations like rebooting, resetting, energy clearing, and OTA updates without accessing the embedded web interface. It also supports configuring external functionalities like MQTT and UDP. If Home Assistant is set up for external network access, users can configure or manage their ESP devices from any network using this integration.

IV. Applicable Products

• SPM01-xxEW

• SPM02-xxEW

• SDM01-EWx

• SDM02-EW

V. Ideal Applications

Bituo PMD enables users to fully leverage Home Assistant’s multi-brand device integration capabilities, allowing ESP devices to function as triggers or participants in various smart scenarios. Additionally, users can use these devices to monitor household energy consumption, with detailed power usage charts and historical data provided by Home Assistant.

If multiple ESP devices are installed in the home, the mDNS feature works seamlessly with Home Assistant to facilitate the rapid configuration of multiple devices. Once configured, if you need to know the IP address or name of a specific device, you can enable the device locating feature within the integration. Once activated, the corresponding device’s indicator light will blink, helping you easily locate the desired device.

VI. Usage Steps

1. Installation:

• Via HACS: Add the custom repository and select the integration for installation.

• Manual installation: Place files in the Home Assistant custom_components directory.

2. Configuration:

• Auto Discovery: Devices automatically appear in the discovery list when connected to the same network.

• Zeroconf Scan: Use Zeroconf to scan for devices on the network.

• Manual Configuration: Add devices by manually entering their IP addresses.

3. Device Management:

• View detailed device information and parameters.

• Adjust device settings via the Home Assistant interface.

• Perform OTA updates to keep the device software up to date.

Bituo PMD Installation & User Guide

Bituo PMD HA integration simplifies managing ESP series devices, making it easy to connect and monitor energy consumption. With multiple configuration options, powerful device management, and a built-in device locator, users can complete tasks faster and find devices more easily. It showcases Bituo Technik’s expertise in smart home technology and provides a more intelligent solution for home management.

Dear Valued Customer

We are delighted to unveil substantial advancements in our SPM02, encompassing comprehensive PCBA hardware optimization and the introduction of novel software UI features. These upgrades are meticulously crafted to propel product performance to new heights and enrich user experiences, staying true to our pledge of relentless innovation and unwavering customer satisfaction.

Description of Change

• PCBA Hardware Optimization:

  • Objective: To bolster product performance, reliability, and longevity.

  • Key Changes:

• Upgraded Components: After thorough analysis, we’ve swapped select MCU with more potent ones equipped with extensive On-chip Flash Memory, enabling them to detect and log richer energy data.

• Layout Refinement: The PCB layout has undergone meticulous redesign to minimize signal interference, incorporate additional test points, and optimize space utilization.

• Rigorous Validation: Extensive simulation and rigorous testing ensure that the optimized PCBA surpasses or meets the original design specifications.

• Software UI Enhancements:

  • Tuya Platform: Enhanced with additional energy information display and UI optimizations for a more intuitive user interface.

  • Embedded Web-page Dashboard: Showcases expanded energy information alongside UI refinements for a seamless monitoring experience.

  • BITUO PMD Software UI Update: Having more energy information ,streamlining information presentation and enhancing clarity.

Customer Impact of Change and Recommended Action

Impact on Customers:

Customers will relish the improved performance of the SPM02 and embrace the enhanced features that broaden its functionality and usability. No specific action is required from customers as these upgrades are seamlessly integrated into the product, enhancing their overall experience.

Related product ordering code

• SPM02-D2TZ

• SPM02-U2TZ

• SPM02-D1TZ

• SPM02-U1TZ

• SPM02-D2TW

• SPM02-U2TW

• SPM02-D1TW

• SPM02-U1TW

• SPM02-D2M1

• SPM02-U2M1

• SPM02-D1M1

• SPM02-U1M1

• SPM02-D2EW

• SPM02-U2EW

• SPM02-D1EW

• SPM02-U1EW

Additional Notes

For customer-specific sensors, such as using specific printing or communication module, please contact our sales team to align the product change status

Support

Should you have any questions or need assistance with the updates, our team is here to help. Please contact your sales representative, or send an Email to info@bituo-technik.com

We are excited about these enhancements and believe they will significantly improve the value and appeal of our SPM02. We appreciate your continued support and look forward to serving you with even better products and services in the future.

Date 2024-09-18

Product Management of Smart Energy Sensors

Bituo Technik

Dear Valued Customer

We are delighted to unveil substantial advancements in our SPM02, encompassing comprehensive PCBA hardware optimization and the introduction of novel software UI features. These upgrades are meticulously crafted to propel product performance to new heights and enrich user experiences, staying true to our pledge of relentless innovation and unwavering customer satisfaction.

Description of Change

• PCBA Hardware Optimization:

  • Objective: To bolster product performance, reliability, and longevity.

  • Key Changes:

• Upgraded Components: After thorough analysis, we’ve swapped select MCU with more potent ones equipped with extensive On-chip Flash Memory, enabling them to detect and log richer energy data.

• Layout Refinement: The PCB layout has undergone meticulous redesign to minimize signal interference, incorporate additional test points, and optimize space utilization.

• Rigorous Validation: Extensive simulation and rigorous testing ensure that the optimized PCBA surpasses or meets the original design specifications.

• Software UI Enhancements:

  • Embedded Web-page Dashboard: Showcases expanded energy information alongside UI refinements for a seamless monitoring experience.

  • BITUO PMD Software UI Update: Having more energy information ,streamlining information presentation and enhancing clarity.

Customer Impact of Change and Recommended Action

Impact on Customers:

Customers will relish the improved performance of the SPM02 and embrace the enhanced features that broaden its functionality and usability. No specific action is required from customers as these upgrades are seamlessly integrated into the product, enhancing their overall experience.

Related product ordering code

• SPM02-D2EW

• SPM02-U2EW

• SPM02-D1EW

• SPM02-U1EW

Additional Notes

For customer-specific sensors, such as using specific printing or communication module, please contact our sales team to align the product change status

Support

Should you have any questions or need assistance with the updates, our team is here to help. Please contact your sales representative, or send an Email to info@bituo-technik.com

We are excited about these enhancements and believe they will significantly improve the value and appeal of our SPM02. We appreciate your continued support and look forward to serving you with even better products and services in the future.

Date 2024-09-18

Product Management of Smart Energy Sensors

Bituo Technik

 As we showcased our latest smart energy monitoring solutions, we were thrilled to connect with professionals from around the globe and explore emerging opportunities in key markets. This year’s exhibition not only expanded our reach but also opened doors for new collaborations, reinforcing our position in the smart energy management sector.

New Markets, New Opportunities

During the exhibition, we identified the growing interest in energy management solutions from regions like the Middle East and Eastern Europe. We look forward to the promising partnerships that will emerge from these markets.

IoT Ecosystems and Future Trends

One of the key takeaways from SSHT 2024 was the opportunity to gain a deeper understanding of the evolving IoT ecosystems. As smart home technologies continue to advance, we are seeing rapid changes in how devices integrate and communicate. Our conversations with industry experts gave us a clearer picture of the upcoming transformations, allowing us to refine our approach and align with the latest trends in IoT development.

AIoT in Energy Management

Perhaps one of the most exciting realizations from SSHT 2024 was the potential of AIoT (Artificial Intelligence of Things) and its application in smart energy management. We are excited to explore how AIoT can revolutionize the way energy is monitored, consumed, and managed, and we see it as a core component of our future innovations.

Strengthening Partnerships

SSHT 2024 was also a chance for us to reconnect with our long-term partner, Bernard Business Consulting, known for its expertise in ESG and sustainability. Together, we are moving forward with a stronger level of cooperation, particularly across Southeast Asia, where the demand for sustainable energy solutions continues to grow.

 Looking Ahead

As we reflect on the meaningful connections and insights gained from SSHT 2024, we are even more energized for the future. The opportunities identified in emerging markets, the integration of AIoT into energy management, and the strengthened partnerships signal a bright and innovative path ahead for Bituo Technik.

I. Introducing the BRCS01C-05-H1 from Bituo Technik: Your Ultimate Solution for Built-in DC 6mA RCD

Bituo Technik is excited to introduce our latest innovation in electric vehicle (EV) charging safety technology to the international IEC market (countries in Europe, Asia, Africa and Australia requiring IEC 61851-1 standard compliant for EV chargers): the BRCS01C-05-H1 residual current sensor using a DC 5V interface for integration with AC charging controller via wire connection.

This advanced residual current sensor is designed to meet the needs of built-in DC 6mA protection at modern AC EV charging systems, providing reliable and accurate AC/DC residual current detection across the international IEC market. In particular, the product has shown excellent performance against nuisance tripping in the tests from the pilot customers.

II. Key Features of the BRCS01C-05-H1

1. Robust design

Equipped with world-class core components and additional protective components, the BRCS01C-05-H1 guarantees accurate and reliable operation under all conditions, safeguarding your EV charging. For example, the sensor has been used by pilot customers to pass the Radiated RF test of 30V/M after integrating into complete EV chargers.

2. Easy Integration

Engineered for integration flexibility, the BRCS01C-05-H1 use a 5V DC interface with enhanced ESD protection and a connector with a “fixing hook”, facilitating the integration of the sensor into a charging controller via cable connection. Also, its independent fault signal output pins – one for solely DC 6mA trip and the other for Type-A 30mA +DC 6mA trip- provide the flexibility of built-in RDC-PD or RDC-MD design and ease tripping root cause analysis.

3. User-friendly Installation

Designed with ease of use in mind, the BRCS01C-05-H1 offers a straightforward installation process, allowing for quick and hassle-free setup. For example, its large apertures of 17mm facilitate cable through all ranges of AC EV chargers.

4. Reduced nuisance tripping

To reduce nuisance tripping brought by the evolving OBC technologies, the experts at Bituo Technik use an advanced closed-loop fluxgate technology at BRCS01C-05-H1, which optimizes its processing algorithm for composite waveforms of residual current. The overall electronic system was also designed to mitigate the possibility of nuisance tripping, with much positive feedback received from domestic customers before introducing it into the overseas market.

III. Risk of Wire Disconnection

The large-scale applications of BRCS01-ADC-H2 and BRCS01-DC6-H2 that use similar wire connection designs have proved the risk of wire disconnection (the wire between the sensor and charging controller) for wall-mounted Mode-3 EVSE can be well managed with the following measures:

• Include the self-testing cycle before starting charging every time

• Use a connector with a “hook” to improve the connection

• Use two fixing straps to keep the phase and neutral conductors adherent to the residual current sensor

• Monitor the wire connection status with an additional circuit at the charging controller

IV. Application: Built-in DC 6mA RCD (also named built-in RDC-DD) at Mode-3 EVSE

According to IEC61851-1:2017 and IEC60364-7-222:2018, the appropriate protective measures against electrical shock at Mode-3 EV chargers shall be

• Option 1: RCD Type B 30mA (IEC 60947-2 type-B mRCD/CBR or IEC 62423 type-B RCCB)

• Option 2: RCD Type A 30mA (IEC 61008-1 type-A RCCB, IEC 61009-1 type-A RCBO or IEC 60947-2 type-A mRCD/CBR ) and appropriate DC detection above 6mA (IEC62955 RDC-PD / RDC-MD)

The BRCS1C-05-H1 residual current sensor can be used to configure an RDC-PD (Type A 30 mA complying with IEC 61008-1 / IEC60947-2-Annex M and DC 6 mA complying with IEC 62955) or an RDC-MD (solely DC 6 mA complying with IEC 62955) together with the MCU and the relays at a charging controller, so as to meet the protection request defined in IEC 61851-1 and IEC 60364-7-722.

V. Why Choose the BRCS01C Type EV 5V-12V?

At Bituo Technik, we are dedicated to delivering cutting-edge solutions that drive innovation and safety in electrical installation technologies. The BRCS01C-05-H1 is a testament to our commitment to quality, performance, and reliability. Whether you’re upgrading your existing EV chargers or integrating new built-in RCD solutions, the BRCS01C-05-H1 is the perfect choice for modern AC EV charging needs.

BRCS01C-05-H1, using a 5V DC interface and wire connection, was designed to replace BRCS01-ADC-H2 and BRCS01-DC6-H2 in the long run. The BRCS01-ADC-H2 and BRCS01-DC6-H2 have been used in the international IEC market with track records since 2020, and the design of BRCS01C-05-H1 had taken into consideration of experiences of the large-scale BRCS01-ADC-H2 and BRCS01-DC6-H2.

Experience reliable built-in DC 6mA RCD with the BRCS01C-05-H1 residual current sensor. Visit our website or contact our sales team to discover how the BRCS01C-05-H1 can benefit your application.

About Bituo Technik

Bituo Technik is a leading provider of residual current device (RCD) solutions, committed to accelerating electrical safety upgrading with state-of-the-art technology. Our products are designed to meet the highest standards of safety, reliability, and performance.

For more information about the BRCS01C-05-H1 residual current sensor, please visit the Bituo Technik BRCS01C Product Page or download its datasheet directly.

We’re thrilled to announce the launch of our latest innovation in smart energy monitoring: the SDM (Smart Din-rail Meter). Designed to meet the evolving needs of industrial customers, the SDM offers advanced features and unparalleled versatility in real-time energy metering and monitoring.

SDM Product Overview

SDM01 smart energy monitor is a compact smart energy monitoring device. With its 18mm-width monitor installed at DIN-rail and three split-core current transformers (CTs), the SDM provides the bi-directional measurement of key electrical data, such as voltage, current, power, and energy.

SDM Key Features

– Bi-directional measurement:

SDM supports bi-directional measurement of power and energy flow, ensuring accurate readings in both directions.

– Real-time monitoring:

Real-time monitoring of key electrical data such as voltage, current, and power in real-time, empowering informed decision-making.

– Easy installation:

SDM’s monitoring module requires only 1MW at DIN rail and pairs seamlessly with compact split-core CTs for hassle-free installation. (Get a glimpse of SDM’s installation)

– Versatile connectivity:

Whether it’s Wi-Fi, Zigbee, Modbus, or a hybrid option, SDM offers versatile communication options to meet system integration needs.

– Local Automation:

With local UDP broadcasting and HTTP requests, SDM is ideal for home energy management systems (HEMS) and zero export to the grid.

– Modbus Support:

Choose from solely Modbus or hybrid Wi-Fi/Zigbee+Modbus variants for industrial installations, ensuring compatibility with existing infrastructure.

What Inspired Us: Meeting Industrial Demands

The inspiration behind the creation of the SDM stems from the growing demand from our industrial customers for a monitoring device capable of measuring large currents.

While our existing smart energy monitor, the SPM, caters to home and small businesses with its capacity of up to 63A, the SDM fills the gap by offering 80/120/200A clamp options and robust customization for industrial applications.

Ready to get a testimonial?

Simply contact us to receive our latest quotations and explore any promotions that may apply.

Dear Valued Customer

As part of our continuous improvement process, design optimization has been made to facilitate greater harmonization with electric vehicle charging applications worldwide.

Description of Change

• Hardware Enhancements: TVS which are marked red in the diagram have been added, and a 10K Ohm limiting resistor which is marked blue in the diagram has been added.

• Firmware Improvement: Firmware has been updated to make the sensors more robust against nuisance tripping. Two types of fluxgate technologies can be selected by customers.

• Material Change: Instead of polyurethane, silicon gel has been used for PCBA and coil coating. Epoxy resin is still coated above the silicon gel to fix the shielding wire firmly for the externally mounted version of BRCS01(BRCS01-ADC-H1, BRCS01-DC6-H1, BRCS01-ADC-H2, and BRCS01-DC6-H2).

Customer Impact of Change and Recommended Action

Although quite some customers have sent us feedback that the above changes have no impact on their charging controller design, we still suggest customers investigate the above changes on their application and take corrective actions if required.

Reason for Change

Unlike traditional Din-rail installed RCD, built-in RCD/RDC-DD at electric vehicle supply equipment (EVSE) is still a new application. As a leading company in the field of residual current protection, Bituo keeps improving its AC/DC residual current sensors from large-scale applications worldwide, to make them more robust and reliable.

Product Identification

• BRCS01-ADC-H1

• BRCS01-DC6-H1

• BRCS01-ADC-H2

• BRCS01-DC6-H2

• BRCS01-ADC-S1

• BRCS01-DC6-S1

• BRCS01-ADC-L

• BRCS01-DC6-L

• BRCS02-ADC-L

• BRCS02-DC6-L

  
  

“X01“, “X02“, “K01“ or “K02“ are printed on the BRCS01/02 sensor housing to distinguish the sensors with the above changes from those without the above changes. An illustration is shown as follows.

Additional Notes

The meaning of the options are as follows

• X01: closed-loop fluxgate, with high-level output at the trip pin during calibration

• X02: closed-loop fluxgate, without high-level output at the trip pin during calibration

• K01: open-loop fluxgate, with high-level output at the trip pin during calibration

• K02: open-loop fluxgate, without high-level output at the trip pin during calibration

Calibration without high-level output at the trip pin (X02 / K02)

Calibration with high-level output at the trip pin (X01 / K01)

Customers can choose the sensor technology and calibration indication type by adding “_K01”, “_K02”, “_X01” and “_X02” after the standard ordering number. For example, the ordering number of BRCS01-ADC-H2_X01 presents a sensor with closed-loop fluxgate technology and high-level output at the trip pin during calibration.

BRCS01/02 sensors ordered after October 1st, 2023 without adding any option code will be delivered the same as the product with the “K02“ option – open-loop fluxgate, without high-level output at the trip pin during calibration.

For customer-specific sensors, please contact our sales team to align the product change status

Support

Should you have any questions or need assistance with the updates, our team is here to help. Please contact your sales representative, or send an Email to info@bituo-technik.com

We thank you for your patience and understanding as we roll out these important updates, which are designed to significantly improve your built-in RCD/RDC-DD. We are committed to ensuring the highest standards of product performance and customer satisfaction.

Date 2024-05-11

Product Management of Residual Current Sensors

Bituo Technik

We’re thrilled to share the highlights of our recent showcase at Hannover Messe 2024, where Bituo Technik took the stage with our cutting-edge smart energy sensors revolutionizing energy efficiency projects.

Bituo Technik is honoured to welcome a diverse range of attendees, including industrial system integrators, energy management system integrators, prominent industrial end-users (with a focus on discrete industries), and renowned electrical brands from across Europe. Their keen interest in Bituo’s products underscores the growing demand for effective energy efficiency solutions in the industrial landscape.

Smart Energy Sensors for Enhanced Efficiency

One of the main attractions at our booth was our range of smart energy sensors designed to monitor real-time energy data and help optimize energy usage. Visitors were particularly intrigued by our SPM02 and SDM01 Modbus versions, tailored for efficient energy management in industrial sectors.

Praise for Flexibility and Affordability

Visitors highly recognize Bituo’s products for their flexibility in data processing, enabling seamless integration into various industrial systems. The open hardware platform also received acclaim, as users appreciated the ability to program the SoC according to their industry knowledge, facilitating proactive maintenance tasks such as motor monitoring. Furthermore, our products also received acclaim for their exceptional cost-effectiveness and user-friendly installation process, reaffirming Bituo’s commitment to delivering value-driven solutions.

Fostering Collaboration and Innovation

Through engaging conversations with industry experts from integrators and end users, a unanimous consensus emerged: the industrial sector demands cost-effective, high-performance energy sensors for widespread adoption in energy efficiency management. This mutual recognition paves the way for future collaborations and knowledge sharing, as we collectively strive towards advancing energy efficiency initiatives worldwide.

Hannover Messe 2024 was a resounding success for Bituo Technik, reaffirming our position as a frontrunner in the realm of energy management. Thank you to all our visitors and partners for your unwavering support. Let’s forge ahead together towards a greener, more efficient future!

Bituo Technik expands its product portfolio with the introduction of the Modbus version of SPM01/02 miniature energy sensors. The Modbus version is specifically crafted for existing electrical installations.

The SPM product line is renowned for diverse wireless communication capabilities, and the wired Modbus version shares a common platform with their Wifi/Zigbee/Ble counterparts.

Inherently designed for compactness, the Modbus version caters to installations with limited space in distribution boards, offering a robust solution for real-time electrical monitoring in varied settings.

SPM Modbus Version

Why is the SPM01/02 Modbus version developed?

The development of the Modbus version of SPM01/02 stems from feedback gathered from system integrators in energy efficiency projects. Despite the forward-looking nature of the wireless communication-equipped SPM01/02, the preference for Modbus in industrial and infrastructure applications is continually witnessed.

Recognized for its stability, reliability, and flexibility, Modbus communication, with its established track record, aligns with the expectations of both end-users and system integrators, who are well acquainted with master-slave communications.

The Modbus version of SPM01/02 serves as a valuable complement, specifically designed to enhance real-time electrical monitoring in energy efficiency projects.

SPM01/02 Modbus version or traditional meters with Modbus communication?

Energy meters are meters with metering certificates or approvals, typically utilized for billing purposes. In contrast, SPM01/02 is positioned as energy sensors tailored for projects emphasizing energy efficiency.

Traditional energy meters with Modbus communication, being larger in size, may pose challenges for integration into sub or final power distribution boards.

Notably, aligning with the standards of IEC 61557-12 and the same as meters, SPM01/02 offers class 1 accuracy alongside greater cost advantages.

Smart address configuration

Hualei Liu, CTO at Bituo Technik, further elaborates a highlight of the Modbus version: “To simplify device address configuration, we employ a broadcasting mechanism to assign the address. The Modbus master initiates address broadcasting within the network. The installer can then press the Reset button on the designated SPM01/02 energy sensor to get access to the same address. This efficient process, designed for devices without displays, ensures a swift assignment of device addresses.”

Specifications of the Modbus version of SPM01/02

• Poles: 1P+N (SPM01) / 3P+N (SPM02)

• Rated operating voltage Un:
  -SPM01: 110 ~ 240 VAC, 50/60 Hz
  -SPM02: 380 ~ 415VAC, 50/60Hz

• Basic current Ib: 10 A

• Starting current Ist: 50 mA

• Max current Imax: 63 A

• Over-voltage category: III

• Rated insolating voltage Ui: 250V (SPM01) / 440V (SPM02)

• Energy measurement accuracy class (IEC 61557-12): Class 1.0 (± 1%)

• Rated operating temperature: -25 ~ 60 ℃

• Size (Height x Width x Depth):
  -SPM01: 46.8mm x 17.8mm x 21.3mm
  -SPM02: 46.8mm x 53.0mm x 21.3mm

Interested in deeper insights into related technologies and applications? Feel free to talk to the Bituo Team!

Bituo Technik recently took center stage at the Emove 360 exhibition in Munich, Germany, showcasing an array of cutting-edge products that have sparked considerable interest among industry professionals. This event, held from October 17 to October 19, 2023, served as a platform for Bituo to introduce its innovative solutions to the European audience.

Bituo’s residual current protection devices BRCS03X and BRCM01C have quickly gained recognition for their exceptional quality and compatibility. They are playing a crucial role in enhancing the supply chain sustainability for EV Charger clients. Moreover, they reinforce the electrical protection infrastructure for EV charging, ensuring safety and efficiency in an ever-expanding market. The BRCS02C, another remarkable product, stood out with its compact size, a testament to Bituo’s remarkable research and development capabilities.

Emove 360 also marked the European debut of Bituo’s smart energy sensors SPM, a significant milestone since its initial launch. In an era where energy management has become a critical concern due to growing awareness of energy-saving practices, the SPM series has garnered substantial interest. Bituo’s smart energy sensors enable dynamic load balancing and optimization of solar power usage. These capabilities captured the imagination of professionals, who see these products as central monitoring devices in home energy management systems (HEMS). Bituo’s team also actively engaged in insightful discussions with industry experts, exchanging ideas and insights on the applications of smart home devices and energy management using Home Assistant.

In the face of uncertainties and fluctuations in the global market, Bituo remains steadfast in its commitment to contributing to a safe and smart electrification era. Stay tuned for more updates on Bituo’s journey!

Smart Nation Expo serves as a bustling platform for companies to showcase their cutting-edge solutions aimed at transforming the future of smart technologies. The Smart Nation Expo 2023 held in Malaysia brought together some of the brightest minds and innovators in the tech and energy sectors.

During our participation in the Smart Nation Expo 2023, we had the privilege of engaging with a diverse group of industry professionals and decision-makers. What truly stood out was the number of professionals who recognized the potential of our Smart Power Meters (SPM) and took immediate action. Many of them were so impressed that they made on-the-spot purchases, acquiring SPM samples for rigorous testing and integration into their projects. It was a testament to the trust our products have garnered in the industry, and we’re excited to see how our SPM will empower these forward-thinking companies in their energy management endeavours.

The Deputy Minister of Communications honoured our booth with a visit, expressing a deep interest in our cutting-edge Smart Power Meters (SPM). This remarkable encounter reinforces our commitment to pushing the boundaries of innovation in the energy management sector.

At Bituo Technik, we believe that these moments of recognition and enthusiasm from industry leaders fuel our passion for excellence. Stay tuned as we bring you more exciting developments from our journey to shape the future of smart energy monitoring!

Check out our upcoming events and feel free to book an on-the-spot meetup with the Bituo team!

From May 10th to May 12th, Bituo Technik actively participated in the prestigious Build4Asia 2023 exhibition held in Hong Kong. As a leading showcase for the building, electrical engineering, and security industries, the event provided an ideal platform for us to showcase our latest electrical measurement technologies, particularly in the area of smart energy monitors.

Throughout the three-day event, our booth attracted a diverse audience of professionals and industry experts. We captivated attendees with live demonstrations of our cutting-edge electrical measurement technologies, highlighting their practical applications and innovative features. Visitors were impressed by the performance and ease of installation of our SPM smart energy monitors, which received high praise from our long-term partners in Hong Kong.

The exhibition provided an excellent opportunity for our team to engage in insightful conversations with professionals. We exchanged knowledge and ideas about related technologies, discussed innovative applications, and shared industry trends. These interactions not only enhanced our understanding of Hong Kong’s construction sector but also shed light on the region’s stringent regulations, making us better equipped to navigate the market.

During the event, two of our long-term partners in Hong Kong paid us a visit and expressed their satisfaction with our products. They particularly commended the convenience and efficiency brought by the easy installation process of our SPM smart energy monitors. The positive feedback and success stories shared by our customers, including one major local real estate company, further validated the immense potential of the Hong Kong market for our products.

As the exhibition concluded, we leave Build4Asia 2023 with a stronger sense of confidence in the future. The enthusiastic reception of our products and the acknowledgement of their effectiveness in meeting industry needs have bolstered our determination to expand our presence in Hong Kong. We are excited about the opportunities that lie ahead and remain committed to providing innovative solutions that address the unique challenges of the local market.

Three and a half years ago, Bituo launched its first EV RCD product – an RDC-MD consisting of DC6-C1/C2 (230V controller) and DC6-iRCS-32 / BRCS01-DC6-H1 (5V sensor) shortly after the introduction of IEC 62955:2018. The 5V leakage current sensor of BRCS01-DC6-H1 and its brothers/sisters have been used by many EV charger manufacturers in Europe and Asia. They are mainly used for built-in RDC-DD at AC EV chargers that meet the AC/DC residual current protection request defined in IEC 61851-1.

For EV charger manufacturers that are used to 12V interface between AC/DC leakage current sensors and charging controllers, Bituo newly launched RCD-MDs (also named 6mA DC RCM) with 12V interface of BRCM01-DC6-S1 and BRCM01-ADC-S1. As illustrated in the following diagram, BRCM01 consists of two parts – the 5V BRCS01-DC6-L / BRCS01-ADC-L residual current sensor and the 5/12V conversion accessory.

Diagram 1: BRCM01 Consisting of BRCS01 and 5V/12V Accessories

Product highlights

· Easy wiring: The hole of 16.2 mm diameter facilitates easy wiring for EV chargers from 3.3 kW to 22 kW.

· Wide power supply: A wide range of 12~24V DC power supply is accepted, with TVS integrated inside for over-voltage protection.

· Firm connection: A special connector with a “hook” design is applied to fasten the cable connecting to the DC RCM.

· High compatibility: BRCM01 can be easily integrated into many existing EV charging controllers without hardware re-design, given that only TRIP-pin sampling needs adding during 120~200 mS of the test cycle. For more details, please refer to page 4 of BRCM01 datasheet.

Diagram 2: BRCM01 Integration Diagram with EV Charging Controller

On June 28th, our project of “Large-scale applications of advanced current measurement technologies” successfully entered the final of the Shanghai area in “the 2022 China Wings Start-up Competition”. The competition is one of the top start-up competitions in China, and there is fierce competition in the Shanghai area with many strong teams in the hot tracks of microelectronics, medicine, AI and etc.

Picture 1: Award from Songjiang District, Shanghai

Bituo Technik presents its cutting-edge technologies for residual current protection and electrical measurement. The BRCS01 residual current sensors used for mode-3 EV charging piles (mode-3 EVSE) facilitate EV charger manufacturers worldwide to design EV chargers with built-in type-A 30mA (IEC 61008-1) and DC 6mA (IEC 62955) protection. The soon-launched wireless energy sensors – with a size of less than 1/10 of traditional energy meters- caught the eyes of judges from VCs, local government, and industries.

Picture 2: Residual Current Sensors used for AC & DC Protection at Mode-3 EV Charger (Mode-3 EVSE)

“By participating in the ‘2022 China Wings Start-up Competition’, we will let more people know the importance of electrical measurement in today’s world full of power electronics applications.“ said Hualei Liu, CTO of Bituo Technik. “Electrical current sensors play the role of eyes for electrical monitoring, control, and protection. Our products are contributing to electrification and digitization”.

-> Read the start-up competition news in Chinese

In times of global electronic component shortages and pandemic-related delivery uncertainties, electric vehicle (EV) charger manufacturers -in particular- have faced real difficulties in sourcing components for their products. 6mA DC Leakage current sensors are key parts for many Mode-3 EV chargers, but production has suffered from these ongoing shortages. To mitigate their supply chain risks, European EV charger manufacturers turned to BITUO. Our leakage current sensors made a huge impact, specifically our BRCS01 series, which is solely 6mA DC rated or combined Type A 30mA and 6mA DC rated, providing high-quality, safe and reliable leakage current detection.

Our European customers had a basic need – to find alternative suppliers who could provide them with reliable 6mA DC leakage current sensors that would mitigate their supply chain risk. Impressively, our team was able to support most of these manufacturers in seamlessly integrating our 6mA DC leakage current sensors into their EV charger production by offering end-to-end support from our team of experts.

Why 6mA DC Leakage Current Sensors are Important for Safe EV Charging

Leakage current sensors, also known as residual current sensors or differential current sensors, are electronic components that measure the current flow summation of the phase and neutral circuits and detect any imbalances. In EV charging, leakage current sensors -with a rated value of 6mA DC- play a crucial role in ensuring safety in the charging process.

The smooth DC residual current resulting from the insulation fault of an OPC can impair the proper function of type-A 30 mA RCD installed upstream of AC EV charging stations or installed inside the AC EV charging stations. In the worst scenario, a type-A RCD will not be able to trip in the occurrence of an electrical accident.

How BITUO’s 6mA DC Leakage Current Sensors Can Help You Charge Your EV with Confidence

With all these models of leakage current sensors in the market, what makes BITUO’s BRCS01 6mA DC leakage current sensors so special? BRCS01 6mA DC leakage current sensors can meet and exceed the needs of EV charger manufacturers, with several highlights:

• Wide installation variants: Standing-on-PCB, Laying-on-PCB and Hanging-around-main-cable variants are available to meet various kinds of customer request

• High-speed detection: Very fast residual current detection- such as response time of 150 mA AC residual current less than 20ms – facilitates a broad selection of switching relays and contactors

• Easy integration: 4 Pin interface of Vcc, GND, Test and Trip facilitating quick integration into EV charging controller, so as to design built-in RDC-DD at EV chargers

• Proven track records: Globally the first residual current sensor certified by TÜV Rheinland compliant to IEC 62955, and tracked large-scale applications in Asia and Europe

• High reliability: Robust mechanical and electrical design suitable for harsh environmental conditions – such as humid air and on-board vibration

• 
  

BRCS01 AC/DC Residual Current Sensors with Different Installation Variants

Rising to the Challenge: Developing Reliable Built-in RCD at EV Chargers

Designing reliable built-in RCD at EV chargers is not without its challenges. Compliance with international standards such as IEC 60947-2, IEC 61008-1, and IEC 62955 is critical to ensure the safety of EV charging systems. But the challenge lies in designing leakage current sensors that can work seamlessly in multi-module coordinated built-in RCD configurations, while still providing proper electrical protection functions to end users.

At BITUO, we understand the importance of safety when it comes to EV charging. Our mission is to help EV charger manufacturers deliver reliable and safe EV chargers to end users. That’s why we made it possible to design built-in RCDs that meet IEC standards, with reliable and robust 6mA DC leakage current sensors. We believe that everyone deserves access to safe and reliable EV charging, and we’re proud to play a role in making this a reality.
 

Leading with Purpose: BITUO’s Pledge to Go Beyond Sensors and Help EV Charging Thrive

But here’s the best part: BITUO isn’t just in the business of selling 6mA DC leakage current sensors. We aren’t only committed to meeting the most basic needs of our clients.

In the face of the challenges in compliant EV RCD technology, our team of experts is dedicated to providing our clients with a holistic approach and active support in delivering compliant and safe EV chargers with built-in RCDs. We are committed to helping EV charging become safer and supporting manufacturers in delivering EV Chargers with proper electrical protection functions to end-users.

As LIU Hualei, R&D Director at BITUO, puts it, our goal is to openly share our in-depth knowledge about RCD design and manufacturing to help EV charger manufacturers deliver reliable built-in RCDs that comply with IEC 60947-2 / IEC 61008-1 and IEC 62955 standards.

To guide our customers, we offer:

• Free consultation on built-in RCD design: We know that integrating sensors against nuisance tripping can be a challenge, especially when used in a harsh environment. That’s why we’re here to help.

• Built-in RCD verification and testing services: Our customers can send their EV chargers to us to conduct critical tests in compliance with IEC 60947-2 / IEC 61008-1 and IEC 62955 standards.

• Large-scale manufacturing consultation: We can help EV charger manufacturers and their external manufacturing service providers set up automated RCD testing.

For example, we recently helped a British EV charger manufacturer improve their built-in RCD design and supported their SMT partner in China to automate the testing of built-in RCD at their charging controllers.

Automated Built-in RCD Testing for Charging Controllers

The Power of Connection: How BITUO’s Supports are Optimizing the EV Charger Supply Chain

Leakage current sensors are a vital part of the EV charger supply chain. When a leakage current of 6mA DC is detected, these sensors further request the switching devices to disconnect the power supply. This, in turn, helps prevent electrical accidents that can cost human lives, promoting a safer and more reliable charging experience for all.

At BITUO, we understand the significance of this responsibility, which is why we are committed to helping EV charger manufacturers deliver products with reliable protection functions to end users. Our BRCS01 series of sensors is a shining example of this commitment, with their wide installation variants, high-speed detection, easy integration, proven track records and high reliability.

We are dedicated to helping our customers succeed and thrive in the competitive world of EV charging, and we believe that our mission is more important now than ever before.

So let us go forth with courage and commitment, knowing that we are making a positive impact on the world of EV charging. We will continue to support the EV charging industry with purpose and passion.

Since our TÜV certified DC6-iRCS-32 DC residual current sensor detecting DC fault current sensor in accordance with IEC 62955 characteristics was launched in the spring of 2020, we have received much feedback about the sensor. On one hand, our customers are highly satisfied with the excellent performance of DC6-iRCS-32 to detect DC fault currents accurately and quickly, facilitating EV charger manufacturers with a wide selection of power conversion modules and control devices. On the other hand, some customers suggested we do the following modification to the device.

• Develop PCB-mounted variants to be used in charging control PCBA flowing main-circuit current through

• Remove the Din-rail bracket to save space for a compact EV charger

• Add variants of detecting both AC 30mA and DC 6mA fault current

We value customer feedback for further improvement a lot. In autumn 2021, we started a project of developing a new generation AC/DC fault current sensor (namely BRCS-01), aiming to improve the existing DC6-iRCS-32 based on the feedback received. In order to maximally benefit BRCS-01 from the well-established supply chain we have built for DC6-iRCS-32, our engineers decided to use the same PCBA and coils for BRCS-01 as DC6-iRCS-32. This design feature also helps our customers save testing costs for their EV chargers during changing from DC6-iRCS-32 to BRCS-01.

In spring 2021, BRCS-01 AC/DC residual current sensor was now officially launched. The device can be used by EV charger manufacturers to build an AC EV charger meeting residual current requests defined in IEC61851-1 and IEC62752. ( see configuration 1 on our application introduction page)

BRCS-01 benefits EV charger manufacturers at least as following

• Cost-effective: Significant cost saving for mode-3 EV chargers to build EV chargers that provide insufficient residual current protection requested by IEC61851-1

• Flexible installation: three installation variants of PCB laying-down mounting, PCB standing mounting, and hanging-around-cables available, fitting into all EV charger housing or charging controllers easily

• Wide adaptability: The fault current detection performance is well beyond the standard request defined in IEC 62955 (DC 6mA), IEC62752 (AC 30mA and DC 6mA), and IEC60947-2 (AC 30mA), facilitating a broad selection of power supply modules, relays, and contactors

• Premium quality: The products were designed by a team of China’s reputable RCD experts with a track record of developing world-class RCDs, and the supply chain was carefully designed to keep consistent performances benchmarked to those European blue-chip manufacturers

For more information about the BRCS-01 AC/DC fault current sensor founded here

At the beginning of 2021, Bituo introduced a new RCBO used for residual current protection at mode-3 Electrical Vehicle (EV) charging. Our new eFAB type-EV RCBO is an integrated type-A residual current circuit breaker with over-current protection (Type-A RCBO) and residual direct current protective device (RDC-PD).  The product is designed for a mode-3 EV charging system to meet residual current protection requested by IEC 61851-1 & IEC 60364-7-722. Both AC 30mA (A Type) and 6 mA DC residual current protection is integrated into the device with 36mm width.

Unlike RDC-MD and mRCD complying with IEC 629555 and IEC 60947-2-(M) respectively, the eFAB type-EV RCBO trips independent of main-circuit relays/contactors in the occurrence of AC/DC fault current (see configuration 3). It is an ideal solution for EV charger manufacturers and installers that mitigate their risks of being involved in electrical accidents.

Customer Benefits

• Easy-to-use: Installation alone can help EV charger meet residual current protection requested by IEC 61851-1 & IEC 60364-7-722 without charging controller re-designing

•  Space-saving: Compact design with 36mm (2MW) width and 80mm length that saves 50% more space in installation than the traditional 4MW combination of 2MW MCB and 2.5MW type-EV/B RCCB

• Flexible wiring: Possible in feeding from both bottom and up terminals no matter if it is installed in EV chargers or in distribution boards/consumer units

• Cost-saving: Significant cost-saving compared to type-B RCD while maintaining a high level of protection described by the IEC/EN standard for EV charging

• High-quality: Designed by reputable RCD experts and assembled at carefully selected partners with track records of assembling RCD at a high standard

• Smart operation: Automatic re-closing devices/motor operation accessories available to facility remote/local testing and resetting without opening of EV charger cabinet

• Global availability: Accepted in most of the European and Asian countries with its compliance with IEC/EN 61009-1 and IEC 62955 standard

Product Range*

For more information about the eFAB Type-EV RCBO (Type-A RCBO and RDC-PD) found here

Bituo presented cutting-edge RCD technology at the 4th Shenzhen International Charging Station (Pile) Technology & Equipment Exhibition in Shenzhen

CPTE Shenzhen 2020, or the 4th Shenzhen International Charging Station (Pile) Technology & Equipment Exhibition 2020, was held at Shenzhen Convention and Exhibition Center from November 2nd to November 4th, 2020. CPTE is one of the largest and most highly professional Charging Station (Pile) Technology & Equipment exhibitions in China. It has expanded fast with its influence far-reaching and it has also become the vane of the development of the Electric Vehicle Charging industry.

As a leading technology provider for residual current devices, Bituo presented its cutting-edge type-EV RCBO and RDC-MD complying with IEC 62955 standards. Our 2MW Type-EV RCBOs captured the eyes of engineers from many EV charger manufacturers. Moreover, a television team making TV programs about modern technology from CCTV- China’s national television channel – noticed our company and technology. In the interview video, Mr. LIU Hualei, CTO at Bituo, introduced how reliable residual current devices provide sufficient protection against electrical shock and advocates the right DC residual current protection above 6mA in accordance with IEC 62955 for Mode-3 EV charging.

During the exhibition, the BITUO booth attracted many new customers and partners. It is also a good chance to meet and chat with people from existing customers and partners. Our professional team enjoyed a wonderful time in CPTE Shenzhen 2020.