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Motor load monitoring relays

Efficient load monitoring of asynchronous motors 

ABB motor load monitoring relays monitor the load states of single-phase and three-phase asynchronous motors. ABB’s cos ϕ monitoring provides a more precise and economical alternative to conventional pressure transducers and current measurements. The solution measures the voltage of all three phases and the current of one phase. It calculates the phase angle (cos ϕ) between them to evaluate the motor’s status. Make your monitoring more efficient with ABB. 

Main benefits

  • • Reduced down time 
    • Easy commissioning
    • Easy maintenance

Main features

  • • Under- and overload monitoring cos ϕ in one unit
    • Adjustable start-up delay 0.3-30 s
    • Direct measurement of currents up to 20 A
    • Adjustable response time delay 0.2-2 s
    • Single-phase or three-phase monitoring
    • 2 x 1 c/o contact, closed-circuit principle

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