Performance · 50 Hz, tested values
| Output | 1.1 kW |
|---|---|
| Poles · synchronous speed | 4 · 1500 rpm |
| Rated speed | 1430 rpm |
| Rated torque MN | 7.4 Nm |
| Current at 230 V | 4.2 A |
| Current at 400 V | 2.5 A |
| Current at 690 V | – |
| Current at SF 1.15, 400 V | 2.7 A |
| Efficiency 100 / 75 / 50 % | 84.1 / 84.4 / 84 |
| Power factor 100 / 75 / 50 % | 0.77 / 0.7 / 0.57 |
| Efficiency class | IE3 (IEC 60034-30-1) |
| Locked-rotor torque MA/MN | 3 |
|---|---|
| Starting current IA/IN | 7 |
| Breakdown torque MK/MN | 3.5 |
| Pull-up torque MS/MN | 2.7 |
| Rotor inertia J | 0.0037 kgm² |
| Sound pressure LPA at 1 m | 48 dB(A) |
| Insulation | Class F, temperature rise class B |
| Enclosure · cooling | IP55 · IC411 TEFC |
| Ambient | −20 °C to +40 °C |
| Service factor | 1.15 at 400 V 50 Hz (S1) |
| Bearings DE / NDE | 6205ZZ / 6203ZZ |
Torque–speed curve indicative
Drawn through the catalogue points MA, MS, MK and MN. Request the tested curve for your application.
Part-load performance
Efficiency determined to IEC 60034-2-1. Values on a 400 V winding (230 V for single-phase), subject to IEC tolerances.
60 Hz · for North America
| Supply | 460 V · 60 Hz |
|---|---|
| Output (calculated) | 1.26 kW · 1.7 HP |
| Nameplate HP | 1½ HP |
| Speed | 1715 rpm |
| Torque | 5.2 lb-ft · 7.05 Nm |
| Full-load amps at nameplate HP | ≈ 2.3 A |
| Service factor | 1.25 · heat-run verified |
| SF amps | ≈ 2.7 A |
About these values
Calculated from EMPD tested 50 Hz / 400 V data (output × 1.15, speed × 1.2) and confirmed by test on order with a 60 Hz test certificate. SF 1.25 proven by heat run at type test; report supplied at first-article approval. Continuous-duty (S1) motors sold in the US must meet NEMA Premium efficiency and be DOE-certified. Please contact EMPD to discuss.
Frames are IEC metric; NEMA frames 56C to 256T built to MG 1 on request. Please confirm certification requirements (e.g. UL / CSA) at enquiry.
Dimensions · IM B3, frame 90SX
Schematic outline for orientation, not to scale for manufacture. Request the certified drawing (PDF / DXF / STEP) with your enquiry.
| AFoot hole spacing, end | 140 mm |
|---|---|
| BFoot hole spacing, side | 100 mm |
| CShaft shoulder to foot hole | 56 mm |
| HShaft centre height | 90 mm |
| KFoot hole diameter | 10 mm |
| LOverall length | 349 mm |
| ACBody diameter | 178 mm |
| HDOverall height | 225 mm |
| DShaft diameter | 24 mm |
| EShaft length | 50 mm |
| MFlange B5 · pitch circle | 165 mm |
| NFlange B5 · spigot | 130 mm |
| PFlange B5 · outside diameter | 200 mm |
| SFlange B5 · hole diameter | 12 mm |
Mountings B3, B5, B14, B35 and B34 on every rating. Shaft tolerance to IEC 60072. NEMA frames 56C to 256T built to MG 1 on request.
Documents & next steps
Datasheet
EMPD-DS-IE-01 + 60 Hz supplement · Rev 2.1
Request a quote
Model EM3-90S-4-1.1 filled in for you
Certified drawing
PDF, DXF or STEP on request