Does 230v three phase have a high leg
A delta high-leg system has 240 volts line-to-line, but line to neutral is 120 volts line-to-neutral for two pf the three hot lines and 208 volts line-to-neutral on for the third (high) hot line. If a machine that requires three phases requires a neutral connection, you will have a problem with any component that is connected between line and neutral. A 240-volt wye system would normally have 139 volts from line to neutral for each of the three hot lines. However, I expect that a 240 volt wye system is even more rare than a 240-volt high-leg system. I would expect that everything inside a 240-volt, three-phase machine would be either a balanced three-phase load (motor) or a 240-volt, single-phase, line-to-line load.