Effect of Removing Undervoltage Relay from MCB2 on Transformer and Load Protection

Hi all,In a power line, as the attached sample drawing, there are two MCB with an undervoltage relay.The MCB1 is installed in the substation and the MCB2 in the substation of the machine. The distance between them is almost 800m.What I want to ask is if I cancel the undervoltage relay of MCB2, it will affect the protection of the transformer and load or the undervoltage of the MCB1 is enough for the whole circuit.Thank you in advance.

Antonis,
Sad to say but you appear to have stumped our team of experts. I suspect this is a question for a power engineer. Where is one when you need them?

Elizabeth,I apologize for the misunderstanding. I will submit my question again in the correct topic.Thank you.

I'm not a power engineer but I work for a power company.  I'll try and get one of the design guys to look at this on Monday and give me an opinion.

Antonis I am replying here as your other post did not have a diagram (there was something there but it could not be opened).General opinion was that if there is an undervoltage relay with MCB2 it is there for a reason.  If you were to get a fault between the main substation and the machine substation (maybe loss of a phase...) then MCB2 should protect against that.The load (whatever it is) should also have protection built in against any condition which might harm it, if possible

Hello David,
I have the same opinion as you, but I wanted to discuss this matter because I had a disagreement with my colleagues.
Thank you a lot.