ABB CLMD33 low voltage capacitor

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1. Product Overview

The ABB CLMD33 Low Voltage Capacitor is a high-performance power capacitor designed for low-voltage distribution systems for reactive power compensation, power factor correction, and power quality improvement. It uses polypropylene film with self-healing technology to ensure high reliability and long-term stability. The capacitor reduces energy loss, improves system efficiency, and stabilizes the power network.

2. Technical Specifications

• Model: CLMD33

• Type: Low Voltage Reactive Power Compensation Capacitor

• Rated Voltage: 380 V AC / 400 V AC (depending on variant)

• Rated Capacity: Typically 1 kvar to 50 kvar (various options available)

• Frequency: 50 Hz / 60 Hz

• Loss Factor (tan δ): ≤ 0.0025

• Operating Temperature: -25°C to +55°C

• Insulation Class: B / F (depending on variant)

• Tolerance: ±5%

• Connection Method: Star (Y) or Delta (Δ)

• Mounting: Indoor cabinet mounting, bolt-fixed

• Protection Class: IP20

• Service Life: Typical 10–15 years

• Self-Healing Technology: Local dielectric breakdown self-healing

• Standards: Compliant with IEC 60831-1/-2

3. Advantages & Features

1. High reliability

   • Polypropylene film with self-healing ensures long-term stable operation.

2. Low losses

   • Loss factor ≤ 0.0025 reduces energy loss and heat generation.

3. Long service life

   • Industrial design life of 10–15 years for continuous operation.

4. Flexible installation

   • Star or delta connection for easy cabinet installation.

5. Standard compliance

   • IEC 60831 compliant, suitable for global low-voltage power systems.

6. Power factor improvement

   • Effectively compensates reactive power, improves power factor, reduces electricity cost.

4. Application Areas

• Reactive power compensation in low-voltage distribution systems

• Industrial plants and factory distribution networks

• Commercial buildings and electrical rooms

• Elevators, air-conditioning, motor groups, and high-power loads

• Power quality improvement projects

• Automation equipment, machinery, and production lines

5. Precautions & Recommendations

1. Voltage selection

   • Ensure rated voltage is equal to or higher than system voltage to avoid overvoltage damage.

2. Avoid short circuits

   • Prevent short circuit at terminals during installation and maintenance.

3. Environmental requirements

   • Install in dry, ventilated, and non-corrosive environments; avoid humidity and high temperature.

4. Cooling and ventilation

   • Ensure good airflow for proper heat dissipation.

5. Regular inspection

   • Check connections, temperature, and for abnormal noise.

6. Safety operations

   • Cut off power supply before replacement or maintenance to avoid electric shock.

The structure and details of the product：

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