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DRG IE5 Series Electric Motors
The DRG IE5 series are three-phase asynchronous electric motors built to the IEC 60034-30-1 Ultra Premium Efficiency (IE5) class – today's highest efficiency class – covering 0.55 to 355 kW. With 8–9% higher efficiency than IE3 and 3–4% over IE4, full inverter (VFD) compatibility and stock availability, it is a future-ready solution.
General Technical Specifications
| Feature | Value / Description |
|---|---|
| Power range | 0.55 – 355 kW |
| Efficiency class | IE5 – Ultra Premium Efficiency (IEC 60034-30-1) |
| Voltage | 230/400 V – 400/690 V |
| Frequency | 50 Hz / 60 Hz |
| Frame material | Cast iron (GG20) |
| Insulation | Class F (155 °C) |
| Protection | IP55 (IP65 optional) |
| Duty type | S1 (continuous) |
| Noise | 52 – 70 dB(A) |
| Vibration | ≤ 1.5 mm/s |
| Certificates | CE – ISO – EMC – LVD – EAC |
Construction and Materials
Advanced electromagnetic design:
- Optimised stator winding geometry for maximum magnetic flux
- Low-loss, high-silicon steel lamination
- Rotor profile minimising hysteresis and eddy-current losses
- High torque / low current balance
Material quality:
| Component | Specification |
|---|---|
| Winding | 100% pure electrolytic copper – vacuum impregnated |
| Body | Cast iron (GG20) – high vibration damping |
| Rotor | Low-loss aluminium or copper cage |
| Bearings | SKF / NSK / C&U – high-temp grease, quiet, long life |
| Fan | Aerodynamic composite – quiet cooling |
| End covers | Cast iron – high mechanical strength |
| Paint | Electrostatic powder coat – RAL 7032 / 6028 / 5012 |
Protection and durability: IP55 / IP65 optional, Class F (155 °C) insulation, S1 continuous duty.
Noise, Vibration and Thermal Balance
Noise levels (dB(A)):
| Power range | Speed | Noise level | Test standard |
|---|---|---|---|
| 0.55 – 7.5 kW | 1500 rpm | 52 – 57 dB(A) | EN 60034-9 |
| 11 – 55 kW | 1500 rpm | 57 – 62 dB(A) | EN 60034-9 |
| 75 – 200 kW | 1500 rpm | 62 – 68 dB(A) | EN 60034-9 |
| 250 – 355 kW | 1500 rpm | 68 – 70 dB(A) | EN 60034-9 |
The aerodynamic fan and the vibration-absorbing cast body keep the sound level below 70 dB(A).
Vibration levels (RMS velocity – mm/s):
| Test standard | Value | Description |
|---|---|---|
| ISO 10816 / IEC 60034-14 | ≤ 1.5 mm/s | Standard operation |
| Low-vibration special build | ≤ 1.0 mm/s | For precision systems |
Thermal design and cooling:
- Max. winding temperature: 110 °C
- Max. bearing temperature: 80 °C
- Temperature rise: < 75 K
- Optional PTC / PT100 thermal protection
Energy Efficiency and Digital Integration
| Transition | Efficiency gain | Average energy saving |
|---|---|---|
| IE3 → IE4 | +3–5% | up to 10% |
| IE4 → IE5 | +3–4% | up to 15% |
| IE3 → IE5 | +8–9% | up to 20% |
- Full inverter (VFD) compatibility: speed control, energy optimisation, motor protection
- IoT-based monitoring of temperature, vibration and current
Quality Tests (Post-Production)
- Winding resistance and insulation test (500 V Megger)
- Rotor balance test (G 2.5 standard)
- Noise test (EN 60034-9)
- Vibration test (ISO 10816)
- Load torque and current test
- Thermal test (2-hour continuous run)
- Inverter compatibility check
- Final inspection (thermal camera and bearing temperature)
Why DRG IE5?
- Maximum efficiency: up to 20% energy savings long term
- Ultra quiet: < 70 dB(A), ≤ 1.5 mm/s vibration, G 2.5 balance
- Long life: 40,000-hour bearing life, body life over 20 years
- Industry 4.0 ready: smart control, sensor integration, inverter compatibility
- DRG assurance: 2-year warranty, nationwide service and spare parts
Delivery, Warranty and After-Sales
Standard ratings ship from stock, with short lead times for special windings and high power. All products carry a 2-year warranty, backed by nationwide service and spare-part support.
Request a Quote
Get a price for the kW, speed, frame and mounting that fit your application:
Quick quote on WhatsApp | +90 542 666 11 11 | Contact & Quote Form
For details on the IE5 efficiency class and energy savings, see our IE5 efficiency content.