As a 'delta' service you are able to use the phases for power. Your phase voltage is also outside your control but over 400V. The correct solution is to arrange a enclosed tapped 400-480V to 230V isolated transformer with a suitable receptacle for your instrument.
Woher kommen die 400V ? Eine anschauliche Erklärung für jedermann.Warum 230V - 230V = 400V ergibt !!!00:00 Einleitung00:45 3x230V01:53 Maschenumlauf U12=U1-UIf it is rated at above 80% efficiency this may be at the 230V range with efficiency dropping to 71% at the lower end of the range. Or you may have measured the value incorrectly. Whether DC or AC, instantaneous power is instantaneous voltage x instantanous current.
As has been said previously, the normal supply in the uk is 230/400V Each of the three lines is 230V when measured between line and earth/neutral BUT measure between lines you will get 400V. This is part of your basic training, you probably ought to re-familiarise yourself with it if you are dealing with a site which has three phase.Currently, I am using a 400V to 12V transformer in reverse, meaning I supply 12V and around 1.5 A to the secondary side of the transformator and try to get 400V output voltage. My problem is, when I connect anything to the primary side, my voltage breaks down, meaning I only get around 2V of input voltage and 60V of output voltage.
For example, from the motor nameplate in Figure 2, the full load amperage of this motor is 0.97A at 400V. The “/” indicates that the motor can operate at more than one line voltage value. It means engineers can wire this motor to operate using low or high voltage (230V or 400V in this case). The current will be 1.67A at 230V line voltage.
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