Introduction to ABB LWN2660-6
LWN2660-6 Product Overview
The ABB LWN2660-6 is a high-precision power measurement and protection module from the LWN series, specifically designed for low-voltage power distribution systems. It serves as a key component for real-time monitoring and protection of electrical parameters, enabling accurate collection of voltage, current, power, energy, and frequency data while providing comprehensive protection functions against overcurrent, overvoltage, and undervoltage. With advanced digital sampling technology and a robust enclosure design, this module maintains stable performance in harsh industrial environments with electromagnetic interference and temperature fluctuations. It seamlessly integrates with ABB low-voltage distribution systems and automation controllers, making it widely applicable in commercial buildings, industrial facilities, and power distribution stations to enhance the safety, reliability, and energy efficiency of power distribution networks.

LWN2660-6 Technical Parameters
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Product Model: LWN2660-6
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Product Type: Power Measurement and Protection Module (LWN Series)
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Core Functions: Real-time power parameter monitoring, energy metering, overcurrent protection, overvoltage protection, undervoltage protection, fault diagnosis and alarm, data communication
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Power Supply: 24V DC input (19.2V-28.8V DC range); Power consumption: ≤5W; Overcurrent and reverse polarity protection
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Measurement Specifications: Voltage measurement range: 0-400V AC (3-phase); Current measurement range: 0-5A AC (direct input), up to 1000A AC with current transformer; Measurement accuracy: Voltage/Current ≤±0.2%, Power/Energy ≤±0.5%; Sampling frequency: 1kHz
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Interface Type: RS485 communication port (supports Modbus RTU protocol); Digital input/output for status monitoring and control; Analog output (4-20mA) for continuous parameter transmission; Plug-in terminals for easy wiring
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Environmental Ratings: Operating temperature: -25°C to +70°C; Storage temperature: -40°C to +85°C; Relative humidity: 5%-95% (non-condensing); Vibration resistance: 2G (10-150Hz); Shock resistance: 15G
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Mechanical & Installation: DIN rail-mounted; Dimensions (approx.): 100mm × 85mm × 45mm; Net weight: approx. 0.3kg; LED indicators for power, operation status, and fault alarms; Flame-retardant housing (UL94 V-0)
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Protection Features: Overcurrent protection (adjustable setting range: 1-10In); Overvoltage protection (105%-120% of rated voltage); Undervoltage protection (80%-95% of rated voltage); Short-circuit protection; Anti-EMI design
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Compatibility: ABB low-voltage circuit breakers, ABB AC500 controllers, other LWN series modules, standard power distribution system components
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Certifications: CE certified; Complies with IEC 61557-1 (power measurement) and IEC 60947-1 (electrical safety) standards; Passes EMC testing
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Applications: Commercial buildings, industrial production facilities, data centers, power distribution stations, renewable energy systems; Low-voltage power distribution monitoring, energy management, electrical equipment protection
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