Underload monitor (Cos-phi monitor) BA 9065

Numero Ordine: 0039727
Type: BA9065.20 3AC380-440V 0,5-10A

The underload monitor BA 9065 measures the phase shift between voltage and current. The phase... altro

Descrizione del prodotto

The underload monitor BA 9065 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. The change of cos ϕ has to be bigger then the hysteresis of the monitor. In some cases the cos ϕ does not change much with load change on the motor.

Monitors underload and no load on squirrel cage motors e.g.

- fan monitoring (broken belt)
- filter monitoring (blocked filter)
- pump monitoring (blocked valve, dry running)

Specifiche tecniche

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

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Merkmale

According to IEC/EN 60255-1
Detection of underload (cos ϕ)
Current ranges up to 10 A, for higher values a CT must be used
Adjustable response value
Programmable functions:
- Alarm when I = 0
- Sutomatic or manual reset
- Closed or open circuit operation
Manual remote reset
Adjustable operate delay
Independent of phase sequence
Also for 400 Hz systems
Optionally for motors with frequency converters (10 ... 100 Hz) (see notes)
Width 45 mm