Flame Proof Motors

🔧 FLAME PROOF AC MOTORS

by SK Arna Solution

Overview:
For over 25 years, SK Arna Solution has been a trusted name in the manufacturing of standard three-phase induction motors, meeting the diverse needs of engineering and industrial sectors. Expanding its expertise, the company now offers Flame Proof AC Motors, specially engineered for operation in hazardous environments such as refineries, coal mines, and petrochemical plants, where flammable gases, vapors, or dust may be present.

✅ Certifications & Safety Compliance:

Tested & Certified by: Central Mining Research Station (CMRS), Dhanbad

Conforms to: IS: 2148 (Indian Standard for Flame Proof Enclosures)

Explosion Group Classification: Suitable for Group IIA and IIB hazardous zones

⚙️ Key Construction Features:

Flameproof Enclosure:
Rugged cast iron housing is robustly built to contain internal explosions without transmitting flames to the outside atmosphere.

Ex-d Protection:
The flame path clearances are precisely designed to prevent flame propagation, maintaining the surrounding area's safety.

Ingress Protection:
Motor enclosure has IP55 rating for protection against dust and water jets, suitable for indoor and outdoor applications.

Stator Windings:

Insulated with Class F insulation for long service life and thermal durability

Vacuum Pressure Impregnated (VPI) with high-grade varnish for enhanced moisture resistance and mechanical strength

Rotor Construction:

Cast aluminum rotors

Dynamically balanced to ensure smooth, low-vibration, and quiet operation

Core Material:
Laminated with high-permeability, low-loss electrical steel to ensure low power loss and high efficiency

Bearings:

Pre-loaded, sealed bearings on both sides

Designed for low noise and reduced vibration during continuous operation

Cooling Fan:
Made from cast iron, optimized for low windage loss while maintaining effective airflow for cooling

🌍 Application Environments:

These motors can be specially adapted for:

Outdoor & Indoor Humid Conditions (IP55)

Tropical Arid Environments

Chemically Corrosive Locations

Middle-Class Outdoor Chemical Exposure Zones

🧩 Additional Features:

Compact and attractive design

Reliable operation in harsh conditions

Easy maintenance access

IEC-standard output ratings and mounting dimensions

Can be directly coupled or gear-driven