I We have some old Hydraulic Power Packs and have made some new control panels for them, as the old ones are failing.
The motor is 11kW and, with the old starters, run fine (drawing 24A max during startup).
These old starters were wired to the motor directly viqa flexi conduit, while the new starters go through a 10 pole ILME connector using these connectors (https://www.cef.co.uk/catalogue/products/1478356-16a-10-pin-female-insert-spring-terminal-connections) rated at 16A. When changing from star to delta we get a spike of around 50A and the motor "kicks" aggressively. The control circuit itself works fine. I have the timer set to 3 seconds and a 40ms delay between star and delta. Under normal running conditions the HPU only draws around 8 to 10A maximum. The issue onyl occurs when we have the valve open to the hydraulic motor and it's got me at a loss. Avy suggestions as to what is happening here?