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Woodward 8440-1287
Product Overview: Industrial grade dedicated monitoring and protection relay independently developed by Woodward, built with high-performance microprocessor core, integrates AC sampling, parameter measurement, logic protection, data recording and industrial communication in one modular unit. Adopts fully enclosed industrial housing, adapts to severe vibration, electromagnetic interference and wide temperature working environment of power station and engine room, supports on-site panel configuration and upper computer remote parameter modification, serves as core auxiliary protection unit for generator set and distributed power system.
Detailed content
Technical Specifications:
Working power range: 18VDC～32VDC rated 24VDC
Rated input current: 5A AC, withstand short-time overload 20 times rated current
Rated input voltage: 120V/240V AC optional
Working ambient temperature: -20℃～+70℃
Storage temperature: -40℃～+85℃
Relative humidity: 0～95% non-condensing
Electromagnetic compatibility: Meet IEC 61000-6-2 / IEC 61000-6-4 industrial EMC standard
Insulation strength: 2kV AC one-minute withstand voltage
Mounting method: Panel embedded mounting
Functional Characteristics:
Real-time monitoring of generator voltage, current, frequency, power factor, battery voltage and running hours
Integrated ROCOF frequency change rate protection, overvoltage, undervoltage, overfrequency, underfrequency reverse power protection
Built-in operation start-stop counter and maintenance reminder function
Configurable analog output 4-20mA for remote signal transmission
Support CAN bus communication protocol, realize data interconnection with PLC and governor
With two-line industrial LCD display and physical key operation panel
Multi-level password authority management to prevent unauthorized parameter modification
Strong anti-vibration and anti-electromagnetic interference capability, suitable for field harsh working conditions
Application Scenarios: Land-based diesel generator sets, gas generator sets, small and medium-sized thermal power plants, industrial factory power distribution systems, offshore platform power systems, backup emergency power supply units, micro-grid parallel operation control occasions.
