Commissioning an LCD Panel

When I commissioned one LCP panel I got one problem. Can you solve? Are there any
ideas, please share with me.

The LCP module is controlling the LT MCC module which is 350mtr away from the LCP panel.The control supply of 110v Ac.LCP having potential free contacts.

So we laid the cable of C&I i.e 8pairX0.5mm each pair is covered with plastic
cover for pair no. and on the cover armour and on the armour AL paper
cover from MCC to LCP.

Previously I didn't connect armour to the earth- at the time I found
that there is voltage in the armour and there is drop in the cable up 75V.
Than I connected armour to the earth I didn't get any drop in pair cable
and also in the cable I found full 110V. But when it connected to the
coil of a contactor the coil is not picking up and voltage is dropping to
44V in the cable.

Because of this I am unable to start the motor through LCP commands.

Please share the comments