CD60 Starting Capacitors: Technical Specifications and Performance Data

CD60 Starting Capacitor Overview

CD60 electrolytic starting capacitors are engineered for high-torque motor starting applications. These components provide the initial power boost needed to start single-phase motors in pumps, compressors, and industrial machinery.

Core Technical Specifications

The following table presents standard CD60 capacitor specifications across common capacitance ranges:

Capacitance (µF)	Voltage Rating (V AC)	Dimensions (mm)	Tolerance
50-100	125-250	25×50 to 35×60	±10%
100-200	125-330	35×60 to 40×80	±10%
200-400	125-330	40×80 to 50×100	±10%
400-600	125-250	50×100 to 65×120	±10%

Electrical Characteristics

CD60 capacitors are designed for intermittent duty cycles. Key electrical parameters include:

Duty Cycle Limitations

Starting capacitors operate only during motor startup, typically 1-3 seconds per cycle. Maximum duty cycle: 20 starts per hour. Exceeding this limit causes overheating and premature failure.

ESR and Impedance

Low Equivalent Series Resistance (ESR) ensures efficient energy transfer during startup. Typical ESR values range from 0.1 to 0.5 ohms depending on capacitance value.

Environmental Specifications

CD60 capacitors operate reliably across diverse environmental conditions:

• Operating Temperature: -40°C to +85°C
• Storage Temperature: -50°C to +105°C
• Humidity Resistance: 85% RH at 85°C (tested per IEC 60384-1)
• Vibration Resistance: 10-55 Hz, 1.5mm amplitude (IEC 60068-2-6)
• Shock Resistance: 50g peak, 11ms duration (IEC 60068-2-27)

Application-Specific Selection Guide

Selecting the correct CD60 capacitor requires matching specifications to motor requirements:

For Pump Motors (0.5-5 HP)

• Recommended capacitance: 100-300 µF
• Voltage rating: 250V AC minimum
• Duty cycle: Standard (20 starts/hour)

For Compressor Motors (1-10 HP)

• Recommended capacitance: 200-500 µF
• Voltage rating: 330V AC minimum
• Duty cycle: Heavy-duty (30 starts/hour with derating)

For Industrial Machinery

• Recommended capacitance: 300-600 µF
• Voltage rating: 250-330V AC
• Consider parallel configuration for higher capacitance needs

Reliability and Lifespan Data

CD60 capacitor lifespan depends on operating conditions and application:

Application Type	Expected Lifespan	Failure Mode
Residential HVAC	8-12 years	Electrolyte drying
Commercial Refrigeration	5-8 years	Capacitance drift
Industrial Pumps	3-5 years	Terminal corrosion
Heavy Machinery	2-4 years	Case bulging/venting

Quality Assurance Standards

All CD60 capacitors meet international standards:

• IEC 60384-1: Generic specification for fixed capacitors
• IEC 60384-4: Sectional specification for electrolytic capacitors
• UL 810: Standard for capacitors (North American certification)
• RoHS compliant: Lead-free construction

Conclusion

CD60 starting capacitors provide reliable motor starting performance across diverse industrial applications. Understanding technical specifications and application requirements ensures optimal selection and maximum service life.