Product Introduction of Londian LD302 Three-phase Smart Meter

1. Product Overview

The Londian LD302 three-phase smart meter operates in the post-paid mode, offering stable and reliable measurement functions. It applies to various on-site environments, such as residential areas, apartments, school dormitories, government agencies, industrial parks, shopping malls, and public buildings.

2. Functional Features Three-phase Smart Meter

(1) Safe and Reliable Post-payment Mode

1. Protecting the Rights and Interests of Power Suppliers
   • The post-payment mode enables power suppliers to first provide power services and then settle the costs according to the actual electricity consumption of users. This helps power suppliers to manage power resources reasonably, reduce the risk of arrears, and safeguard their economic interests.
2. Facilitating Users to Manage Electricity Costs
   • This mode allows users to use electricity first and then pay according to the actual usage. Users can better arrange electricity bill payments based on their financial situations and also be more aware of their electricity-using habits to control electricity costs.

(2) Ultra – wide Voltage Range

1. Adapting to Complex Power Grid Environments
   • The meter has an ultra-wide voltage range and can work normally under different voltage fluctuations. Whether in old power grid areas with large voltage fluctuations or in some special electricity-using scenarios, it can accurately measure electrical energy, effectively avoiding problems such as inaccurate measurement or meter damage caused by voltage fluctuations.
2. Improving Power Supply Stability
   • The characteristic of the ultra-wide voltage range also helps to improve the stability of the entire power supply system. In the case of unstable grid voltages, the meter can operate stably, ensuring the continuity of power measurement and providing reliable data support for power supply and management.

(3) Multiple Anti-tamper Features (4G/3G/2G, PLC, RF, or Other Wired/Wireless)

1. Ensuring Measurement Accuracy
   • Equipped with multiple anti-tamper functions via 4G/3G/2G, PLC, RF, or other wired/wireless communication methods, the meter can effectively prevent illegal interference and tampering during data transmission and measurement, ensuring the authenticity and accuracy of measurement data. Whether it is a network-based attack or a physical tampering attempt, it can be effectively prevented.
2. Enhancing Power System Security
   • The multiple anti-tamper functions greatly enhance the security of the entire power system. In the smart grid environment, as a key device for power measurement, the security of the meter’s data is crucial for power supply, billing, and management. By preventing tampering, the fairness of power transactions and the stable operation of the power system are guaranteed.

(4) Delta Package Firmware Upgrade

1. Upgrading Product Performance
   • The Delta package firmware upgrade function enables the meter to continuously update and optimize its firmware program. With the development of technology and changes in power management requirements, firmware upgrades can improve the measurement accuracy of the meter, add new functions, or improve its communication performance, ensuring that the meter always maintains the best working condition.
2. Extending Product Lifespan
   • This upgrade function helps to extend the service life of the meter. By continuously updating the firmware, the meter can adapt to new power standards and application scenarios, reducing the possibility of being phased out due to technological obsolescence, and thereby saving equipment replacement costs for users and power suppliers.

(5) Internal/External Relay Control

1. Flexible Power Control
   • The internal/external relay control function provides a flexible power control method for the meter. Whether it is through the internal relay to control some functions of the meter itself, such as power-off or power-on operations under specific circumstances, or through the external relay for linkage control with other devices, it can meet the needs of different users and application scenarios.
2. Realizing Intelligent Power Management
   • In the fields of intelligent buildings and industrial automation, this relay control function can be integrated with other intelligent devices to realize intelligent power management. For example, automatically controlling power supply according to peak and off-peak electricity usage periods, or implementing rapid power-off protection and recovery operations in the event of a power failure.

(6) Replaceable Battery

1. Ensuring Continuous Device Operation
   • The replaceable battery design ensures that the meter can continue to operate in case of main power failure or in some special situations (such as maintaining certain basic functions during a power outage). When the battery is depleted, users can easily replace the battery, avoiding meter function interruption due to battery problems and ensuring the continuous availability of the meter.
2. Improving Device Emergency Response Capability
   • In some emergency situations, such as during grid failure repair, the replaceable battery allows the meter to continue to record and save important power data, providing accurate data for subsequent power restoration and billing, and improving the meter’s emergency response-ability.

(7) DLMS Conformance and IEC1107 Standard Compatibility

1. Meeting International Standards
   • The meter is compliant with DLMS (Device Language Message Specification) conformance and IEC1107 standards. This means that the meter follows internationally recognized standard specifications in terms of communication protocols and data interaction and can seamlessly connect and share data with other devices that meet the same standards.
2. Facilitating System Integration and Interoperability
   • In smart grids and energy management systems, this standard compatibility enables the Londian LD302 three-phase smart meter to be easily integrated into various systems. Whether it is integrated with the power supplier’s management system or an energy management network composed of other intelligent devices, good interoperability can be achieved, improving the integration efficiency and management effectiveness of the entire system.

(8) Environment-friendly and User-friendly Design

1. Embodiment of Environmental Protection Concepts
   • The product incorporates environmental protection concepts in the design process. From the selection of materials to the application of manufacturing processes, the impact on the environment is minimized as much as possible. For example, recyclable materials may be used or low-pollution manufacturing processes may be adopted, meeting the requirements of modern society for environmentally-friendly products.
2. User-friendly Design Details
   • The meter’s interface is user-friendly. It simplifies viewing and operation. Installation methods cater to various environments. This ensures quick and safe installation. The design also blends well with the surroundings. It enhances user comfort and convenience.

3. Application Scenarios Three-phase Smart Meter

1. Residential Areas, Apartments, and School Dormitories
   • The Londian LD302 three-phase smart meter accurately measures electricity consumption. It helps residents and students manage electricity costs conveniently. Post-payment mode suits electricity usage habits. Multiple communication methods and anti-tamper functions ensure fairness and security.
2. Government Agencies
   • The meter’s stable measurement function, safe post-payment mode, and international standards-compliant communication capabilities benefit government agencies. Multiple anti-tamper functions ensure data authenticity. They meet government agencies’ security and reliability requirements.
3. Industrial Parks, Shopping Malls, and Public Buildings
   • The ultra-wide voltage range and multiple communication methods suit large-scale power measurement needs. The relay control function integrates with building automation systems. It enables intelligent power management like zoning control for better energy efficiency.