How to Detect True Phase Failure in 3-Phase Relay with Op-Amp Despite Backfeed Voltage?

Hi all,
I have designed 3 phase under voltage and voltage solid state relay using op-amp. I am trying to add phase failure (single phasing protection) in that circuit. I am getting a problem when any phase fails. Voltage is still present in that phase and it not decreasing because of inductance between the phases. I have taken 3-phase line to input and output side so my relay is not turning off.

I have attached the connection of my circuit. Please check it once. When phase fails, it wont decrease much hardly. It only decreases 30-40 V due to the relay that won't get off. I want to isolate or avoid that voltage and I have taken two phase voltage (any two) for control of high and lower voltage protection.

One of the problems that voltage between phase to phase did not decrease is because of the inductance between three coils in the motor. How do you resolve this problems?

I dont really understand what you are asking, and the drawing presented here is as useful as a piece of bullshit, sorry but nobody can say what this circuit should do. There is a induction motor a relay and a piece with 4 corners what ever that should be ????
The text is rather hard to understand...
But as faras I could read out of your text I would say, try to detect the currents in stead of voltages. Because in case of loss of one phase the current in that phase should also be zero.

Hi Vish,
Please would you upload for us the circuit of the black box in your diagram, as that will enable us to understand how the circuit is intended to operate.

[Ulf, many of our enquirers may not be native English speakers, and may not express themselves clearly even in their diagrams, but we all had to start somewhere, so may I suggest we generally avoid the use of terms like BS ?]

Frank, agree, I should not use it. I am also not a native speaker. I only got a little upset about his drawing. I mean he should be able to think about the drwaing he did before hitting the send button... And in several other postings the people get upset for less...