HV AC 280kW Motor IP23

Brief Introduction

The YR-355M-4 motor IP23 integrates comprehensive corona and vibration protection for high-voltage winding longevity. Its insulation system employs graded conductive coatings and low-resistance tapes to eliminate partial discharge, even under continuous operational vibration. This motor IP23 features vacuum pressure impregnation (VPI) with mica-based groundwall insulation, preventing surface tracking and internal ionization at voltages up to 6.6kV. Critical anti-vibration measures include:

Epoxy-bonded slot wedges securing coils against 100Hz electromagnetic forces

End-winding bracing with fiberglass lashings and non-magnetic supports

Isostatic core compression minimizing loose laminations

The IP23-rated enclosure provides adequate ventilation while excluding >12mm solid objects and vertical water jets-ideal for industrial environments where dust accumulation risks corona inception. Validation testing confirms:

Corona extinction level <1pC at 1.5Uₙ

Vibration velocity ≤2.8mm/s under full load (ISO 10816-3)

Thermal cycling endurance (-25°C to +40°C) without insulation delamination

Maintenance protocols include annual thermographic inspections for hotspot detection and triennial resistance testing (insulation >100MΩ). This motor IP23 delivers reliable performance in crushers, compressors, and pumps where combined electrical and mechanical stresses historically accelerated insulation failure.

Main Technical Parameters

Production Details

Frame

• Compact and robust iron casting frame

• Universal IEC and NEMA installation dimensions available

• Customizable outlook and dimensions

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Stator

• 99.9% pure copper winding for stator to ensure the output power and efficiency

• Excellent insulation system with 5 more processing flows

• All the windings are fitted in by handwork to ensure all slots are full and avoid any winding flaw.

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Rotor

• Aluminum casting rotor with high quality silicon steel rotor core to assure induction efficiency

• Well and precisely machined shafts with good capacity of strength and toughness

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Testing

• All motors must pass the piece testing before painting and packaging

• Type tests will be regularly performed for each series, more often for new developed series and variants.

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Applications

Cement

Power station

Steel

Sugar

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