BDM — single-phase motors, dual capacitor
Single-phase motors with start and run capacitors, frames 63 to 112, 0.12 – 4.0 kW, 230 V.
The BDM series adds a start capacitor to the single-phase design, giving a starting torque up to 2.5 times that of a standard single-phase motor. It is the choice for single-phase applications that must start under load.
Key characteristics
Air compressors, pumps and small machines that start under load on a single-phase supply.
- Dual capacitor: start capacitor switched out after run-up
- High starting torque, suitable for overload conditions
- Aluminium frame, IP55, insulation class F
- Foot, flange and combined mountings
- 2, 4 and 6-pole versions
Available range
| Poles | rpm | Power range | Frame sizes |
|---|---|---|---|
| 2 | 3000 | 0.18 – 4.0 kW | 63 – 112 |
| 4 | 1500 | 0.12 – 4.0 kW | 63 – 112 |
| 6 | 1000 | 0.18 – 2.2 kW | 71 – 112 |
Technical specification
| Supply | 1~ |
|---|---|
| Frame material | aluminium |
| IEC frame sizes | 63 – 112 |
| Rated power (kW) | 0.12 – 4.0 |
| Poles | 2, 4, 6 |
| Protection (IP) | IP55 |
| Cooling (IC) | IC411 |
| Insulation class | F |
| Temperature rise | B |
| Duty | S1 |
| Voltage / frequency | 220 – 230 V · 50 Hz |
| Mounting | B3, B5, B14, B3/B5, B3/B14 |
| Capacitor | Dual capacitor (start + run) |
| Starting torque | Up to 2.5 × that of a standard single-phase motor |
| Standards | IEC 60034 series; RoHS 2002/95/CE |
Mounting arrangements
B3, B5, B14, B3/B5, B3/B14
- B3Foot-mounted
- B5Large flange
- B14Small flange
- B3/B5Feet + large flange
- B3/B14Feet + small flange
Technical downloads
3D / CAD models
3D models (STEP) and 2D drawings are available for every BDM variant on our distributor's product pages. Downloading requires a free customer account.
Typical applications
General machinery
Production machines and assembly lines running for long periods: three-phase BMT and BCT motors, worm gearboxes with pre-stage for low speeds.
Maintenance and replacement
IEC-standard dimensions and mountings allow Bernati motors to replace existing IEC motors of the same frame size.
Related Bernati ranges
single-phase motors, aluminium frame
Single-phase capacitor-run motors, frames 56 to 100, 0.09 – 3.0 kW, 230 V.
- IEC frame sizes56 – 100
- Rated power (kW)0.09 – 3.0
- Poles2, 4, 6
worm gearboxes, square housing
Square worm gear reducers, sizes 025 to 150, ratios 7.5 to 100, up to 1 610 Nm.
- Sizes025 – 150
- Reduction ratios7.5 – 100
- Output torque≤ 1 610 Nm
worm gearboxes, compact housing
Compact worm gear reducers, sizes 030 to 090, ratios 7 to 100, up to 350 Nm.
- Sizes030 – 090
- Reduction ratios7 – 100
- Output torque≤ 350 Nm