Features:
Intelligent Protection and Communication: Standard ETU supports comprehensive protection and adjustable settings. Communication modules (PROFIBUS/Modbus/Profinet) enable remote monitoring, parameter setting, and energy data acquisition, improving system transparency and operational efficiency.
High Reliability Breaking Capacity and Safety: Breaking capacity 55-150kA, highly efficient arc extinguishing; phase separators and safety interlocks enhance insulation and operational safety; fixed type IP20, covered type IP55.
Modular Design and Maintenance: Main contacts and arc extinguishing chambers can be replaced individually, extending lifespan; rated current plugs can be quickly replaced without replacing the current transformer; universal accessories simplify inventory and retrofitting.
Flexible Installation and Operation: Convertible between fixed and withdrawable types; withdrawable type supports external operation; "Close Ready" mechanical indicator quickly determines closing conditions.
Strong Application Adaptability: Supports incoming line, bus tie, and feeder protection; adaptable to loads such as motors, transformers, and capacitors; ETU protection functions can be expanded as needed.
Typical Applications:
Industrial Sector: Factory primary/secondary power distribution incoming lines, busbar tie-ins, large motor control circuits, frequency converter cabinets, transformer/capacitor bank protection, adaptable to complex selective coordination scenarios.
Public and Commercial Buildings and Infrastructure: Building trunk lines, data center UPS input/output, power circuits for air conditioning/water pumps, etc. Withdrawable design for easy maintenance; communication functions compatible with energy management systems.
Energy and Municipal: Photovoltaic/energy storage inverter outputs, charging pile power distribution, municipal pumping stations/lighting, grid feeders; ETU adaptable to different protection requirements; communication supports remote monitoring.
