Electric Motors

1 Electric Motors Low Voltage motor Technical Brochure IE2 MEPS2006 Type: AHE Aluminium Motors Type: HE Cast-Iron Motors Type: ML & MY Single Phase 2 PRODUCT OVERVIEW - THREE PHASE Motors Ratings from 90 Watt up to KW Metric frames from IEC 56 ~ 160 Foot, Flange and Face mountings Removable feet TEFC, IP55 enclosures Class F insulated windings - Class B rise Quality Sealed for Life Bearings Multi-Voltage & Multi-frequency ratings Top mounted terminal box as standard Terminal box can be mounted on Right hand side or Left hand side on motor frames 80 to 160 Ratings from 550 Watt up to 630KW Metric frames from IEC 80 ~ 400 Foot, Flange and Face mountings TEFC, IP56 enclosures Class F insulated windings class B rise Quality Bearings.

2 (SKF, NSK, NTN) Multi-Voltage & Multi-frequency ratings Top mounted terminal box standard on all Motors TC Thermistors standard on 11kw & above Re-greasable bearings on frames 280 and larger Our own workshop carries out all modifications to the above standard specification to create application specific Motors . IP upgrades, insulated, roller angular contact bearing upgrades, forced cooling systems, special paint specifications, non standard mounting requirements and many more special application services. Energy-Saving Motors Ratings from 120 Watt up to 30KW Metric frames from IEC 56 to 100 Foot, Flange and Face mountings TEFC.

3 IP55 enclosures Class F insulated windings class B rise Quality Sealed for Life Bearing Top mounted terminal box as standard Terminal box can be mounted on R/H or L/H side Manual Overload reset protection Fully enclosed capacitors Type HE - Cast Iron Energy-Saving Motors Type AHE - Aluminium Energy-Saving Motors MEPS2006 Our dedication to constant product improvement means that design features and performance characteristics outlined in this catalogue are subject to change without notice. Type ML & MY - Aluminium Single Phase Motors 3 Forced Ventilation IE416 All three phase EMT Motors are suitable for Inverter Duty applications.

4 For constant torque applications where a motor operates continuously below 50% of its rated speed, a Constant Velocity Cooling Unit is recommended, to providing continuous cooling air over the motor regardless of the output shaft speed. EMT also recommends the fitting of insulated bearings on Motors above 90kW to eliminate circulating currents and prolong bearing life. It should be noted that with VSD applications where speed frequently exceeds 60Hz a torque drop off may be experienced necessitating the use of a higher kW motor , contact our offices for recommendations in this regard.

5 Rotors All rotor windings and end rings are one-piece die cast aluminium with cooling fins to provide internal air movement. Shafts are made from high quality carbon steel. See data tables for dimensions. Standards EMT Motors are designed, manufactured and tested to the following Standards IEC 60034-1 Ratings & Performance IEC 61972 / 60034-2 Losses & Efficiency IEC 60034-5 Degrees of Protection IEC 60034-6 Methods of Cooling IEC 60037-7 construction mounting IEC 60034-8 Terminal & Markings IEC 60034-9 Noise Limits IEC 60034-14 Vibration Mechanical IEC 60072-1 Dimensions & Outputs AS/NZS MEPS2 Energy Efficiency Standards Mounting Arrangement The design of all EMT Motors is such that they can be operated in all horizontal-mounting positions.

6 Providing consideration is given to the location of drain holes and bearing life EMT Motors are available in B3 foot mounted, B5 flange mounted, B14A face and some B14B mounting configurations. For confirmation of vertical operation requirements please refer to our offices for assistance with bearing design requirements. Type Designation EMT Motors are designated by standard codes: Example AHE 132S12 B3 A Aluminium Frame If absent frame is Cast Iron HE Energy Efficient (MEPS2 / IE2) 132S IEC Frame size (shaft height mm) 1 Stator core length. 1 = Short, 2 = Long, 3 = Extra long 2 Number of poles 2 = 3000rpm 4 = 1500rpm 6 = 1000rpm 8 = 750rpm B3 Mounting arrangement B3 Foot B5 Flange B35 Foot & Flange B14A / B14B Face mount flange Duty All EMT Motors are Continuous Duty Rated (S1), based upon max ambient of 40oC and altitudes below 1000 metres.

7 For applications where Motors are required to meet duty ratings from S2 to S9 please contact our offices for assistance Nameplates All EMT Motors are fitted with Stainless Steel nameplates. Rating and performance data is embossed and stamped to ensure it can remain permanently identifiable Cooling Motors in standard form are Totally Enclosed Fan Cooled (TEFC IC411). Cooling fans are one-piece fibre-reinforced, multi-blade polypropylene or high pressure die cast alloy. All fans are bi-directional and fan covers are rigid pressed steel. Other cooling formats available are o IE416 Forced Ventilation for VSD use o IE418 Pad mount for external ventilation 4 Balancing Rotors are dynamically balanced to severity grade normal (N) as specified in relevant IEC and Australian standards.

8 EMT Motors can be supplied with either a reduced (R) or special (S) vibration level upon request. Vibration Grade Rated Speed ( rpm ) Maximum rms value of vibration velocity per Frames ( mm/s ) 56 to 132 160 to 225 250 to 450 Normal 600 - 3600 Reduced 600 - 1800 1800-3600 Special 600 - 1800 1800-3600 Direction of Rotation All Motors are standard bi-directional rotation. Fasteners All fasteners are metric zinc plated. Bearings Motors from frame sizes 56 up to 225 are fitted with sealed for life type bearings. Motors frame size 250 to 400 frame have re-greasable bearings with a grease relief facility.

9 Motors are supplied with high quality deep groove ball bearings, lubricated with lithium-based grease suitable for operation within an ambient range of 20 deg C to +55 deg C. Special bearing arrangements can be provided to suit various applications. See data tables for standard bearing sizes. Paint System An enamel based epoxy polymer paint finish is used as standard. Special paint systems such as 2-pack epoxy for food industry or for corrosive environments can be provided upon request Terminal Boxes All terminal boxes can be rotated in 90 degree steps through 360 degrees.

10 Metric conduit entries are provided on all Motors . Refer to dimension data for number and size of entries. The terminal box material on frames type AHE 63 to AHE 160 is Alloy and frames HE 132 to HE 450 have Cast Iron boxes. All Single phase Motors have reinforced PVC boxes which enclose the capacitors Aluminium Motors are multi-mount and can have left, top or right cable box positions. Cast Iron Motors have top boxes only. Insulation EMT Motors are all wound with Class F Insulation. Class H Motors are available on request.