OMEC MOTORS
OMT1 & OMT2 Mounting & Maintenance Instructions
Page 6
5.
ELECTRICAL CONNECTION
5.1.
General information
On delivery the motor will rotate clockwise looking at the drive when the phases L1, L2
and L3 are connected respectively to the connection terminals U1, U2 and U3.
Exchanging any two-phase lines can change the direction of rotation.
Connection diagram is shown on the bottom of the motor TBox cover.
When a motor is only suited for one direction of rotation, it is indicated with an arrow on
the motor fan cowl.
Connecting cables must conform to IEE regulations, as must earthing requirements.
Line fuses only protect the cables in case of short– circuiting and do not constitute a
safeguard against the overheating of the winding caused by overload. Therefore it is
recommended that a motor starter and overload is fitted, giving single phasing and
overload protection.
All OMEC motors are fitted in standard with PTC’ s. For windings thermal
protection PTC should be connected.
