Explore our precision-manufactured wound rotor motors, slip-ring AC motors, and high-voltage induction drives designed for seamless integration and long-term durability in extreme Northern European industrial environments.
Power: 15kW / 15,000W
Phase: 3-Phase AC Induction
App: Industrial Ventilation & Mining Ducting
Type: YR Series Slip-Ring Motor
Feature: High Starting Torque & Low Current
App: Ball Mills, Crushers & Hydropower Drives
Standard: IE2 Efficiency Class
Protection: IP55 Enclosure Protection
App: Heavy Duty Pumps & Process Plant Drives
Output: 3,200 kW High Torque
Voltage: 3.3kV / 6.6kV / 10kV
App: Metallurgical SAG Mills & Mine Hoists
Voltage Range: 380V - 10,000V
Cooling: IC411 / IC611 CACA Options
App: Modular Industrial Rewind & Retrofits
Insulation: Class H Resin Systems
Voltage: 380V / 440V / 660V
App: Port Cranes & Heavy Material Handling
Duty Cycle: S3/S4 Heavy Intermittent
Enclosure: Cast Iron Rugged IP54/IP55
App: Steel Mills & Smelting Operations
Rating: 75kW (100 HP) @ 1500 RPM
Voltage: 380V / 400V / 415V 50Hz
App: Continuous Industrial Process Machinery
In high-voltage electrical rotating machinery operating above 3.3 kV, the stator winding is the core component most vulnerable to electrical, thermal, mechanical, and environmental stress. For industrial operators across Sweden—from the iron ore mines of Kiruna and Gällivare to the paper mills of Värmland and hydro plants along the Lule River—stator breakdown leads to catastrophic un-planned downtime costing thousands of Euros per hour.
As a senior global manufacturer and specialized exporter of high-voltage stator coils and comprehensive rewinding solutions, our engineering methodology relies on advanced Vacuum Pressure Impregnation (VPI) technology, epoxy-mica insulation matrices, and anti-corona stress-control coatings compliant with rigorous IEC and SS-EN standards.
Sweden's harsh northern sub-zero climates and heavy continuous industrial processes demand motor stator rewinds that resist extreme thermal cycling, ambient moisture condensation, and intense mechanical overloads.
Heavy SAG mills, ball mills, jaw crushers, and deep-underground mine hoists demand high-torque wound rotor induction motors (such as YR and YZR series). Our high-voltage rewinds feature reinforced slot cell wedges and cold-flexible VPI resins capable of withstanding extreme ambient temperature drops down to -40°C without micro-cracking the epoxy matrix.
Continuous paper machines, wood chippers, thermo-mechanical refiners, and boiler feed pumps run non-stop 24/7 in elevated humidity and chemically aggressive atmospheres. We deploy specialized moisture-sealed Class H epoxy-mica insulation with anti-fungal topcoats that block chemical moisture ingress, preventing inter-turn short circuits.
Sweden’s vast hydropower network requires continuous overhaul and rewinding of hydro-turbine synchronous generators and induction generators. Our Roebel bar stator coil rewinds optimize slot fill factor, reducing copper losses (I²R) and increasing overall generator conversion efficiency to support Svenska kraftnät grid compliance.
As Sweden leads the green transition with fossil-free steel plants, electric arc furnace exhaust blowers and crane slip-ring drives experience violent torque pulses. Our surge-resistant end-winding bracing ensures absolute physical coil stability under severe heavy cyclic magnetic forces.
Port cranes, container portal hoists, and ship propulsion motors operate under constant exposure to salt-spray and marine corrosion. We apply specialized solvent-free 100% solid epoxy resins via global VPI tanks, achieving zero-void sealing compliant with DNV and ABS marine class standards.
Compare key insulation characteristics, diagnostic threshold targets, and structural manufacturing specs between standard rewinds and our premium Swedish-grade VPI stator rewind systems.
| Technical Parameter | Standard Market Rewind | TDC Engineering Premium HV Stator Rewind | Benefit for Swedish Operators |
|---|---|---|---|
| Nominal Operating Voltage | 3.3kV - 6.6kV AC | 3.3kV up to 13.8kV (Custom 15kV rated coils) | Supports high-capacity utility motors without stepped transformers. |
| Insulation Thermal Class | Class F (155°C) dip & bake | Class H (180°C) Samica/Mica-Tape VPI | +25°C thermal headroom allows heavy cyclic overload capacity. |
| Partial Discharge (PD) Level | < 500 pC at rated Un | < 100 pC at 1.25x Rated Voltage Un | Prevents insulation treeing, extending stator lifespan to 25+ years. |
| VFD Inverter Stress Shielding | Standard enamelled wire | Corona-Resistant Inverter-Grade Wire + SiC Tape | Eliminates high dV/dt voltage spike damage from modern VFD drives. |
| Tan Delta (Loss Angle) Δtan δ | < 0.005 per 0.2 Un step | < 0.002 per 0.2 Un step (Ultra-low voids) | Guarantees 100% resin impregnation density through whole coil length. |
| End-Winding Bracing System | Standard polyester lacing | Glass-Rope & Resin Surge Rings + Stiffening Blocks | Prevents coil movement during DOL (Direct-On-Line) heavy motor starts. |
Sweden’s ambitious target to become one of the world's first fossil-free welfare nations requires industrial plants to minimize electrical losses. A substandard stator rewind can drop motor efficiency by 1.5% to 3%, resulting in tens of thousands of Euros in wasted energy annually. Our precision-engineered rewind methodology optimizes slot copper fill ratio by utilizing thin-wall, high-dielectric Kapton-Mica composites, retaining or even improving original OEM efficiency ratings (IE3/IE4 standards compliant with IEC 60034-30-1).
With modern Swedish plants adopting high-efficiency VFD speed controls (IGBT inverters), high voltage stators are subjected to severe repetitive voltage surges (high dV/dt) and standing waves. These voltage spikes degrade turn-to-turn insulation rapidly. Our rewind process incorporates specialized anti-corona conductive coatings and semi-conductive slot end gradient tapes (Silicon Carbide filled tapes) that equalize potential voltage gradients, neutralizing partial discharge arcing.
Operating high-voltage electrical machinery in Swedish sawmills, flour processing facilities, and chemical refineries requires strict adherence to European ATEX and IECEx directives for explosive dust and gas atmospheres (Ex ec, Ex p, Ex e certified designs). Our manufacturing procedures are audited under ISO 9001 and SGS Baseefa, ensuring rewound equipment retains full explosion-proof integrity for hazardous Swedish work zones.
Drawing upon a rich UK manufacturing heritage spanning over 128 years—incorporating famous historical engineering lineages such as TDC Parsons Peebles—we provide complete end-to-end stator coil fabrication, stator core restacking, and dynamic load testing.
When legacy Swedish installations (e.g. older ASEA, ABB, Siemens, or Strömberg high-voltage motors) suffer stator breakdown, sourcing a new frame motor often requires expensive civil foundation modifications and downtime lasting up to 40 weeks. We provide 100% mechanically & electrically drop-in replacement stator rewinds, reverse-engineered precisely to match existing mechanical footprints and electrical characteristics.
Clear, authoritative technical answers regarding transport logistics, emergency repair lead times, thermal endurance, and reverse engineering compatibility for Sweden.
ISO 9001 Certified
AEMT Member
SGS Baseefa ATEX
Achilles Qualified
Whether you require emergency high-voltage stator rewinding in Kiruna, custom VPI form-wound coil export to Gothenburg, or a drop-in motor replacement study, our senior rotating equipment engineers are available 24/7.
Contact Us