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BA 9065

Underload monitor (Cos-phi monitor)

BA 9065

Contacts

Nominal voltage

Current range

Response delay

Variant

  • 0039727
  • BA9065.20 3AC380-440V 0,5-10A
The underload monitor BA 9065 of the VARIMETER series measures the phase shift between voltage... more

Product description

The underload monitor BA 9065 of the VARIMETER series measures the phase shift between voltage and current. The phase angle changes with changing load. This measuring method is suitable to monitor asynchronous motors on underload and no load independent of motor size. Early detection of impending failtures and preventive maintenance prevent costly damage and as a user you benefit from the operational safety and high availability of your system.

Technical specifications

Width: 45 mm
1- / 3-phase: 1, 3
Measuring range max.: 10 A
Operate delay: Yes
Auxiliary voltage: Without, AC
Output contacts: 1 C/O contact, 1 NO contact
Enclosure design: Switch cabinet
Type: BA 9065

Advantages

  • Detection of underload (cos ϕ)
  • Programmable functions:
    - Alarm when I = 0
    - Automatic or manual reset
    - Closed or open circuit operation
  • Adjustable response value
  • Manual remote reset
  • Adjustable operate delay

Features

  • According to IEC/EN 60255-1
  • Current ranges up to 10 A, for higher values a CT must be used
  • For AC and DC motors
  • Independent of phase sequence
  • Also for 400 Hz systems
  • Optionally for motors with frequency converters (10 ... 100 Hz) (see notes)
  • Width 45 mm