Open Drip Proof Motors (IP23)

General Purpose Open Drip Proof Motors

Open drip proof squirrel cage three phase low voltage motors, Frame Sizes 280 - 400, 110Kw to 800Kw.

Brochures
Open Drip Proof Motors (0.91 MB - pdf)

ABB Open Drip Proof Motors

Stator

The stator frame is made of profile-pressed sheet steel, giving the motor high mechanical strength, low weight and a good surface finish. The stator core is welded into the stator frame and contributes to its excellent mechanical properties. Feet and lifting eyes are welded to the stator frame. The terminal box and end shields are of cast iron.

Drain holes

Motors that will be operated in very humid or wet environments, and especially under intermittent duty, should be provided with drain holes. The appropriate IM designation, such as IM V3 (IM 3031), is specified, on the basis of the method of motor mounting. M2FA motors are fitted with drain holes and plugs. The plugs are open on delivery. Check that the drain holes and grease outlet face downwards, when mounting designation differs from standard horizontal mounting. In the case of vertical mounting, the upper plug must be hammered home completely. In very dusty environments the drain hole plug should be knocked in.

Terminal box

Terminal boxes are mounted either on the top of the motor, or on either side of the motor, check when ordering from JJ Loughran .
In basic version the terminal box can be rotated 2x180° to allow cable entry from either side of the motor. The terminal box is equipped with cable glands or cable boxes as standard, and terminations are suitable for Cu- and Al-cables. Cables are connected to the terminals by cable lugs which are not included with the motor. To enable us to supply suitable terminations for the motor please state cable type, quantity and size when ordering.
For dimension drawings of terminal boxes, see drawings.

Bearings

The motors are normally fitted with single-row deep groove ball bearings as listed in the table on the right. The complete ball bearing designation is stated on the rating plate. If the bearing at the D-end is replaced with a roller bearing (NU- or NJ-), higher radial forces can be handled. Roller bearings are suitable for belt drive applications. When there are high axial forces, angular-contact ball bearings should be used. This option is available on request. When a motor with angular-contact ball bearings is ordered, the method of mounting and direction and magnitude of the axial force must be specified. For special bearings, please see variant codes.