Siemens & Innomotics SIMOTICS HV Wound-Rotor Slip-Ring Motors
Brand: Siemens / Innomotics | Series: SIMOTICS HV Slip-Ring (High Starting Torque Modular Heavy Range)
High Starting Torque Heavy Engineering — Siemens to Innomotics:
The SIMOTICS HV wound-rotor slip-ring motor architecture represents Siemens' specialized high-voltage drive solution designed specifically for applications that require exceptionally high starting torque while strictly limiting starting inrush current on weak power grids. Following Siemens' corporate carve-out of its large-scale motors and drives division, this heavy industrial product line is engineered and manufactured under the independent brand Innomotics.
Engineering Superiority for Extreme Load Acceleration:
• Maximum Starting Torque at Minimum Inrush: By connecting an external Liquid Resistance Starter (LRS) or stepped rotor resistor bank to the wound-rotor slip rings, starting torque can be adjusted up to breakdown torque levels ($M_K$) while holding the line starting current below 1.2 to 1.5 times the rated current ($I_N$).
• Motorized Brush-Lifting Device (Optional): To eliminate continuous brush wear, carbon dust accumulation, and routine ring maintenance during regular running, a heavy-duty motorized brush-lifting and short-circuiting mechanism is available to automatically lift the brushes once rated speed is reached.
• MICALASTIC® VPI Insulation: Both the high-voltage stator and the three-phase wound rotor utilize Vacuum Pressure Impregnation (Class F, evaluated to Class B temperature rise), providing superior mechanical rigidity against centrifugal forces during heavy start cycles in cement, mining, and metal shredding plants.
The SIMOTICS HV wound-rotor slip-ring motor architecture represents Siemens' specialized high-voltage drive solution designed specifically for applications that require exceptionally high starting torque while strictly limiting starting inrush current on weak power grids. Following Siemens' corporate carve-out of its large-scale motors and drives division, this heavy industrial product line is engineered and manufactured under the independent brand Innomotics.
Engineering Superiority for Extreme Load Acceleration:
• Maximum Starting Torque at Minimum Inrush: By connecting an external Liquid Resistance Starter (LRS) or stepped rotor resistor bank to the wound-rotor slip rings, starting torque can be adjusted up to breakdown torque levels ($M_K$) while holding the line starting current below 1.2 to 1.5 times the rated current ($I_N$).
• Motorized Brush-Lifting Device (Optional): To eliminate continuous brush wear, carbon dust accumulation, and routine ring maintenance during regular running, a heavy-duty motorized brush-lifting and short-circuiting mechanism is available to automatically lift the brushes once rated speed is reached.
• MICALASTIC® VPI Insulation: Both the high-voltage stator and the three-phase wound rotor utilize Vacuum Pressure Impregnation (Class F, evaluated to Class B temperature rise), providing superior mechanical rigidity against centrifugal forces during heavy start cycles in cement, mining, and metal shredding plants.
The Siemens & Innomotics SIMOTICS HV Wound-Rotor Slip-Ring Series delivers exceptional mechanical durability, high thermal overload capacity, and smooth acceleration for machinery with enormous moments of inertia. Available across supply voltages of 3.3 kV, 6.0 kV, 6.6 kV, 10.0 kV, and 11.0 kV (50 Hz and 60 Hz) spanning power ratings from 500 kW to 15,000 kW+ in IEC frame sizes 450 to 900, these drives feature modular cooling configurations (IC611 air-to-air heat exchanger or IC81W air-to-water heat exchanger). Standard equipment includes hydrodynamic sleeve bearings with forced lubrication, segregated slip-ring inspection housings with IP55/IP65 protection, vibration surveillance probes, and embedded Pt100 RTDs in stator slots, rotor windings, and bearing shells. They are specified worldwide for cement ball mills, SAG mills, raw material crushers, underground mine hoists, shredders, and heavy blast furnace exhaust fans.
Technical Specifications
| Series Designation | SIMOTICS HV Slip-Ring (Modular Three-Phase Wound-Rotor AC Induction Motor) |
|---|---|
| Brand Lineage | Siemens → Innomotics (100% Authentic Heavy Industrial Factory Channel Supply) |
| Rated Supply Voltages | 3.3 kV, 6.0 kV, 6.6 kV, 10.0 kV, 11.0 kV (50 Hz and 60 Hz Standard Grid Compliance) |
| Rated Output Power Range | 500 kW to 15,000 kW+ (IEC Frame Sizes 450, 500, 560, 630, 710, 800, 900) |
| Pole Configurations | 4-Pole (1500/1800 rpm), 6-Pole (1000/1200 rpm), 8-Pole (750/900 rpm), 10-Pole, 12-Pole+ |
| Cooling Topologies (IEC 60034-6) | IC611 (Air-to-Air heat exchanger) | IC81W (Air-to-Water heat exchanger) | IC01 (Open circuit) |
| Rotor Connection Technology | Heavy-duty phosphor-bronze or stainless-steel slip rings with continuous brushes or motorized brush-lifting mechanism |
| Starting Auxiliary Systems | Full compatibility with Liquid Resistance Starters (LRS), metallic resistor banks, and secondary slip regulators |
Siemens & Innomotics SIMOTICS HV Slip-Ring Selection Directory (6kV & 10kV Ratings)
Procurement selection directory for Siemens & Innomotics Wound-Rotor Slip-Ring Motors. Review primary ratings for heavy mill drive and mine hoist 6-Pole (1000 rpm at 50Hz, 6 kV and 10 kV supply) applications. Identify exact IEC frame sizes (450 to 800), cooling systems, rated power in kW, full-load efficiency values, and rotor voltage profiles:
| Brand Lineage | Cooling Type | Rated Voltage | Frame Size | Rated Power | Poles | Efficiency Rating |
|---|---|---|---|---|---|---|
| Siemens / Innomotics | IC611 (Air-to-Air) | 6 kV | 450L | 500 kW | 6 | 95.2% (Heavy Starting) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 6 kV | 450L | 630 kW | 6 | 95.5% (Heavy Starting) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 6 kV | 500L | 800 kW | 6 | 95.8% (Heavy Starting) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 6 kV | 500L | 1000 kW | 6 | 96.0% (Heavy Starting) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 6 kV | 560L | 1250 kW | 6 | 96.2% (Cement Mill Duty) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 6 kV | 560L | 1600 kW | 6 | 96.4% (Cement Mill Duty) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 6 kV | 630L | 2000 kW | 6 | 96.6% (Ball Mill Duty) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 6 kV | 630L | 2500 kW | 6 | 96.8% (Ball Mill Duty) |
| Siemens / Innomotics | IC81W (Water-Cooled) | 6 kV | 710L | 3150 kW | 6 | 97.1% (Heavy Mine Hoist) |
| Siemens / Innomotics | IC81W (Water-Cooled) | 6 kV | 800L | 4500 kW | 6 | 97.3% (Heavy Mine Hoist) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 10 kV | 500L | 800 kW | 6 | 95.4% (10kV Grid Ready) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 10 kV | 500L | 1000 kW | 6 | 95.7% (10kV Grid Ready) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 10 kV | 560L | 1250 kW | 6 | 96.0% (10kV Grid Ready) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 10 kV | 560L | 1600 kW | 6 | 96.2% (10kV Grid Ready) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 10 kV | 630L | 2000 kW | 6 | 96.4% (10kV Grid Ready) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 10 kV | 630L | 2500 kW | 6 | 96.6% (10kV Grid Ready) |
| Siemens / Innomotics | IC611 (Air-to-Air) | 10 kV | 710L | 3150 kW | 6 | 96.8% (10kV Grid Ready) |
| Siemens / Innomotics | IC81W (Water-Cooled) | 10 kV | 710L | 4000 kW | 6 | 97.0% (10kV Ultra Power) |
| Siemens / Innomotics | IC81W (Water-Cooled) | 10 kV | 800L | 5000 kW | 6 | 97.2% (10kV Ultra Power) |
| Siemens / Innomotics | IC81W (Water-Cooled) | 10 kV | 800L | 6300 kW | 6 | 97.4% (10kV Ultra Power) |
Documentation & Technical Catalogs
Wound-Rotor Slip-Ring vs. Squirrel-Cage Starting Comparison Matrix
Engineering comparison between high-voltage slip-ring motor architecture and standard squirrel-cage DOL/soft-start drives:
| Operating Metric | SIMOTICS HV Slip-Ring Motor + LRS | Squirrel-Cage Direct-On-Line (DOL) | Squirrel-Cage with MV Soft Starter |
|---|---|---|---|
| Starting Torque ($M_{start}$) | Up to 200% - 250% rated torque (smooth, fully controllable) | 80% - 140% rated torque (fixed torque profile) | 50% - 90% rated torque (severely reduced) |
| Inrush Starting Current ($I_{start}$) | Low (1.2 to 1.5 $\times I_N$); no grid voltage dip | Very high (5.5 to 7.0 $\times I_N$); causes grid drop | Medium to high (3.0 to 4.5 $\times I_N$) |
| Heavy Inertia Acceleration | Exceptional (heat dissipated outside motor in LRS) | Poor; high risk of rotor cage thermal failure | Limited; starting time constrained by cage heating |
| Weak Power Grid Compatibility | Ideal (prevents upstream transformer tripping) | Unsuitable without massive grid over-sizing | Marginal; struggles to break away heavy mill loads |
Legacy Siemens & Flender Slip-Ring Motors to SIMOTICS HV Migration Guide
Discontinued Siemens slip-ring motors can be modernized to current SIMOTICS HV units without foundation reconstruction:
| Legacy Slip-Ring Series | Typical Operating Challenge | Modern SIMOTICS HV Replacement | Mechanical & Electrical Upgrade | Retrofit & Foundation Fitment Notes |
|---|---|---|---|---|
| Siemens Legacy 6kV / 10kV Slip-Ring Units | Carbon brush sparking; high ring wear; aging rotor insulation | SIMOTICS HV Slip-Ring with Brush-Lifting Device Low Maintenance | Brushes lift automatically after start; cuts ring wear by 95% | Custom soleplates fabricated to match original foundation plinth anchor bolts and centerline height. |
| Open-Circuit Drip-Proof (IP23) Slip-Ring Motors | Excessive clinker and cement dust entering winding slots | SIMOTICS HV Modular IC611 (Totally Enclosed IP55) IP55 Sealed | Closed-circuit internal air loop prevents abrasive dust contamination | Direct shaft centerline match for ball mill girth gear pinions and reduction gearboxes. |
| Aging Liquid Resistance Starter (LRS) Systems | Electrolyte concentration drift; mechanical drive chain wear | SIMOTICS HV Motor + Modernized Digital LRS Package Complete Drive | Automated conductivity regulation and PLC integration | Complete turn-key drive train package ensuring smooth torque delivery and optimal thermal management. |
Heavy Industrial Sourcing & Mill Drive Engineering by WeDrive
WE DRIVE HONGKONG LIMITED provides technical engineering verification, rotor impedance calculation, and worldwide supply for the entire Siemens & Innomotics SIMOTICS HV Wound-Rotor Slip-Ring Motor portfolio. Whether your facility operates a cement raw mill requiring an air-to-air cooled unit (IC611), an underground mine hoist needing precise acceleration cycles with motorized brush-lifting gear, an industrial scrap metal shredder requiring high breakdown torque reserve, or water-cooled units (IC81W) for space-restricted process plants, our technical team confirms all rotor voltage ($U_r$), rotor current ($I_r$), and starting resistor parameters before manufacturing.
Modernizing obsolete slip-ring motors to current SIMOTICS HV technology ensures reliable start-up under full load, eliminates high starting current penalties from local electrical utilities, and drastically reduces downtime caused by carbon brush maintenance. Submit your existing motor nameplate photograph, rotor voltage/current ratings, or foundation drawing to our engineering specialists to receive an authentic OEM quotation complete with mechanical outline prints and factory test certificates.
Modernizing obsolete slip-ring motors to current SIMOTICS HV technology ensures reliable start-up under full load, eliminates high starting current penalties from local electrical utilities, and drastically reduces downtime caused by carbon brush maintenance. Submit your existing motor nameplate photograph, rotor voltage/current ratings, or foundation drawing to our engineering specialists to receive an authentic OEM quotation complete with mechanical outline prints and factory test certificates.
Core Benchmark Model Standard Configurations
- SIMOTICS HV Slip-Ring 6kV 500 kW Frame 450
- SIMOTICS HV Slip-Ring 6kV 630 kW Frame 450
- SIMOTICS HV Slip-Ring 6kV 800 kW Frame 500
- SIMOTICS HV Slip-Ring 6kV 1000 kW Frame 500
- SIMOTICS HV Slip-Ring 6kV 1250 kW Frame 560
- SIMOTICS HV Slip-Ring 6kV 1600 kW Frame 560
- SIMOTICS HV Slip-Ring 6kV 2000 kW Frame 630
- SIMOTICS HV Slip-Ring 6kV 2500 kW Frame 630
- SIMOTICS HV Slip-Ring 10kV 800 kW Frame 500
- SIMOTICS HV Slip-Ring 10kV 1000 kW Frame 500
- SIMOTICS HV Slip-Ring 10kV 1250 kW Frame 560
- SIMOTICS HV Slip-Ring 10kV 1600 kW Frame 560
- SIMOTICS HV Slip-Ring 10kV 2000 kW Frame 630
- SIMOTICS HV Slip-Ring 10kV 2500 kW Frame 630
- SIMOTICS HV Slip-Ring 10kV 3150 kW Frame 710
- SIMOTICS HV Slip-Ring 10kV 4000 kW Frame 710
- SIMOTICS HV Slip-Ring 10kV 5000 kW Frame 800
- SIMOTICS HV Slip-Ring 10kV 6300 kW Frame 800
- SIMOTICS HV Motorized Brush-Lifting Device
- SIMOTICS HV Liquid Starter Matched Drive
