Reliance Electric Motor Type P Design B

The Reliance Electric Motor Type P Design B is a general-purpose, three-phase induction motor built to NEMA standards and trusted for its robust performance, reliability, and efficiency in a wide range of industrial applications. Its balanced starting torque, efficiency, and durability make it suitable for fans, pumps, compressors, and other medium starting torque machinery.

At HiTechTrader, we provide tested and performance-verified Reliance Electric motors, ensuring industrial operators benefit from cost-effective and reliable drive solutions.

General Description

1. Built to NEMA Design B standards, offering normal starting torque and current, with slip typically around 3%
2. Design P denotes a specialized Reliance motor variant optimized for durability and industrial duty
3. Widely used across industries requiring medium starting torque and reliable continuous-duty operation

Electrical and Mechanical Specifications

1. Voltage: 230/460 V, three-phase, 60 Hz
2. Horsepower: Available in a wide range, from fractional HP up to several hundred HP
3. Typical speed options: 900, 1200, 1800, or 3600 RPM (depending on pole configuration)
4. Service Factor: 1.15 for safe overload handling
5. Insulation Class: Typically F (with options for Class B)
6. Enclosures: Commonly TEFC (Totally Enclosed Fan Cooled); severe duty and explosion-proof options available
7. NEMA frame sizes range from small to large industrial standards

Performance Characteristics

1. Starting Current: ~120–250% of full load current
2. Starting Torque: 200–270% of rated torque
3. Breakdown Torque: 600–700% of rated torque
4. Slip: Typically 1.5–3%
5. Efficiency: High efficiency up to ~96% on larger models
6. Power Factor: ~88–95%, depending on load

Physical Features

1. Mounting: Foot-mounted, with NEMA standard frame dimensions
2. Shafts: Standard keyed shafts per frame size
3. Bearings: Heavy-duty ball or roller bearings for extended service life
4. Cooling: External fan circulation for continuous operation
5. Housing: Rugged drip-proof construction, with TEFC and severe duty options

Example Motor Specification (15 HP Model – P25G4554C)

1. Horsepower: 15 HP
2. Speed: 1765 RPM
3. Voltage: 230/460 V
4. Amperage: 39.0/19.5 A
5. Frequency: 60 Hz
6. Phases: 3
7. Frame: 254T
8. Insulation Class: F
9. Service Factor: 1.15
10. Enclosure: TEFC
11. Efficiency: ≈96.2%
12. Weight: ~100 kg (220 lbs)

Applications

1. Fans and blowers
2. Pumps and compressors
3. Conveyors and industrial machinery
4. HVAC systems
5. Machine tools and automation systems

Why Buy from HiTechTrader?

HiTechTrader supplies refurbished and field-tested Reliance Electric Type P Design B motors, ensuring every motor meets operational standards for torque, efficiency, and reliability. Customers benefit from significant cost savings, guaranteed performance, and support for long-term industrial use compared to purchasing new units.