Model Series: 6390 Series (Single-Phase Motors)

Technical Specifications:

• Rated Power (P2): 90 W
• Rated Voltage: 230V AC / 50 Hz
• Rated Speed: 2850 RPM
• Rated Current: 0.65 A
• Power Factor (cos φ): 0.72
• Efficiency Class: IE2 (High Efficiency)
• Insulation Class: Class B (130°C)
• Protection Rating: IP44 (with terminal box cap)
• Capacitor: 4 µF / 400V AC (permanent run capacitor)
• Bearing Type: Sealed ball bearings (6000-2RS)
• Mounting: B3 foot mounting with 4 mounting holes (Ø 5.5 mm)
• Shaft: 8 mm diameter, 20 mm length, DIN 6885 keyway
• Housing Material: Aluminum alloy (ADC12 die-cast)
• Weight: 2.4 kg
• Noise Level: ≤48 dB(A)

Functional Features:

• Permanent split capacitor (PSC) for smooth continuous operation
• Thermal protector embedded in stator winding (125°C trip, auto-reset)
• Pre-greased bearings — maintenance-free for 20,000 operating hours
• Dual-voltage capable (230V / 115V) via internal wiring change

Structural Characteristics:

• Cylindrical aluminum housing with integral feet
• Junction box mounted on top, rotatable in 90° increments
• Cable gland entry: 2 × PG11
• Drain hole at lowest point of housing

Working Principle:
The main winding and auxiliary winding (connected via run capacitor) produce a two-phase rotating magnetic field from single-phase supply. This induces current in the squirrel-cage rotor, generating torque. The capacitor remains in circuit continuously, providing optimal phase shift for running torque.

Advantages & Highlights:

• IE2 efficiency — reduces energy consumption by up to 15% vs IE1 motors
• Dual-voltage (230V/115V) — one motor for global markets
• Compact B3 footprint — fits standard pump mounting plates
• 20,000-hour bearing life — extended service intervals

Applicable Industries:

• Circulator pumps (heating systems)
• Small condensing unit fans
• Vending machine compressors
• Pool circulation pumps

Installation Requirements:

• Mount on rigid, level surface with vibration-isolating pads
• Align shaft coupling within 0.05 mm radial runout
• Connect via 3-core cable (L, N, PE), 1.0 mm² minimum
• Ensure minimum 100 mm clearance around motor for airflow cooling

Usage Precautions:

• Do not operate at voltages exceeding ±10% of rated voltage
• Check insulation resistance (>10 MΩ at 500V DC) before first start
• Replace run capacitor if motor draws >15% above rated current
• Do not block cooling fins or ventilation slots