Forgive my ignorance, but how can two 3-phase ratings on the same motor result in the same output power?
The one I have is rated for 0.7kW in triangle for both 400V and 690V.
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Figure 1. Connection possibilities.
Figure 2. Connection options.
How can two 3-phase ratings on the same motor result in the same output power?
In each case the voltage across each winding is 400 V so the same current will flow in each winding and the same power will be produced.