Product Overview
The DTU-900 distribution automation terminal is a new product developed for the increasingly widespread applications in ring main units, switching stations and similar locations. It adopts a new high-voltage switch control device combining a high-speed sampling chip with a 32-bit high-speed control chip, and can monitor high-voltage switches quickly and stably. It integrates protection, measurement, control, monitoring, communication and remote functions, featuring a high degree of integration, flexible configuration and a friendly interface.
Widely used in radial and ring-main supply systems, it helps the system identify transient and permanent line faults, automatically eliminating the influence of transient faults on the line and isolating the permanently faulted section, thus avoiding long-duration large-area outages and automatically restoring supply to the non-faulted sections, thereby achieving economical and practical distribution network automation. The DTU-900 distribution automation terminal integrates protection, measurement, control, monitoring, communication and remote functions, featuring a high degree of integration and flexible configuration.
Product Features
The DTU-900 three-remote distribution automation terminal uses a high-performance 32-bit microprocessor as its hardware development platform and an efficient embedded real-time operating system as its software development platform. It has the following distinctive technical features:
Unified Core Common Platform
- Platform: a unified embedded hardware/software platform (the CPU uses a self-developed 32-bit mainboard with a clock frequency up to 240 MHz and a hardware platform with large information processing capacity, together with an embedded multitasking real-time operating system software platform), supporting a high-speed Ethernet bus and a CAN bus with large interface capacity.
- Storage: large-capacity FLASH and RAM, capable of locally storing position records, accident telesignalling change (SOE) event sequence records and extreme value records for not less than 1 month, and supporting supplementary upload of historical data.
Diversified Communication Modes & Protocols
- Provides 4 RS232/RS485 interfaces with baud rates of 300-115200 bps and 2 Ethernet ports, supporting various protocols such as 101 and 104.
- Hardware configuration: independent communication management module; the hardware configuration supports main/standby switchover with redundant design.
- Software configuration: supports multiple communication modes and protocols, and can communicate simultaneously with several master stations at different levels.
Flexible Configuration of Telesignalling, Telecontrol & Telemetry
- Truly modular design: the three-remote function modules are standard and universal, and the failure of any module does not affect the operation of other modules or the system.
- Within the maximum capacity of the measurement and control unit, three-remote function modules can be added as required. When the number of three-remote points exceeds the maximum capacity of the measurement and control unit, function modules can be extended through the expansion bus.
Intelligent Power Management
- Real-time power supply monitoring, with alarms for AC loss and battery undervoltage.
- Online battery management, supporting manual, automatic and remote activation.
- Battery charge/discharge protection: the battery supply is automatically cut off when the discharge cut-off point is reached.
- Can provide various operating power supplies for the terminal, communication equipment, telesignalling and telecontrol, with output short-circuit protection. Supports connection of lead-acid and lithium batteries.
Maintenance
- Adopts a large LCD with Chinese display, menu-driven interface and keyboard operation, providing a good human-machine interaction environment (optional).
- Provides various indicator lamps showing the operating state.
- Provides remote and local maintenance interfaces, allowing operators to maintain it locally or remotely from the master station.
Environment
- Adaptable to harsh environments, with an operating temperature of -40 ℃ to +70 ℃, and is anti-magnetic, moisture-proof and shock-proof.
- Electromagnetic compatibility can reach level 4 and above, adapting to strong electromagnetic environments.
Related Products
Low-voltage switchgear of the same series and other types available for selection:
