The CG303-40.5 Capacitive Insulator Sensor is an advanced electrical device designed to provide precise voltage measurement and protection for high voltage switchgear. Manufactured using high-quality epoxy resin and state-of-the-art capacitive sensing technology, this sensor ensures accurate monitoring, durability, and reliable operation in harsh electrical environments.

High Voltage switchgear requires robust insulation and monitoring systems to prevent electrical faults, minimize downtime, and ensure operator safety. The CG303-40.5 sensor fulfills these requirements with its innovative design, strict quality control, and compliance with international safety and environmental standards.

Key Features

• Precise Voltage Measurement: Provides accurate capacitive sensing for switchgear applications.

• High Voltage Insulation: Epoxy resin construction ensures exceptional dielectric performance.

• Durable Construction: Resistant to environmental stresses, including humidity, temperature variation, and electrical load fluctuations.

• Safety Compliance: Meets international standards for high voltage equipment and electrical safety.

• Environmental Protection: Eco-friendly materials reduce harmful emissions and support sustainable manufacturing.

Environmental Performance

Environmental sustainability is a critical factor in modern electrical equipment. The CG303-40.5 sensor uses non-toxic, eco-friendly epoxy resin, ensuring minimal environmental impact throughout its lifecycle.

Key Environmental Advantages

1. Non-toxic Materials: Fully free from harmful heavy metals and hazardous chemicals.

2. Low Carbon Manufacturing: Produced in facilities with energy-efficient practices.

3. Recyclable Components: Epoxy resin and metal parts can be recycled after service life.

4. Compliance with RoHS: Meets Restriction of Hazardous Substances directives.

5. Long Service Life: Reduces waste and replacement frequency.

Technical Parameters

The CG303-40.5 sensor is engineered to provide precise and reliable measurements in demanding high voltage environments. Below is a detailed technical specification table:

Design and Construction

The CG303-40.5 sensor is constructed to maximize reliability and operational efficiency.

1. Epoxy Resin Insulation: High mechanical strength, excellent dielectric properties, and resistance to thermal and electrical stress.

2. Compact and Robust Housing: Protects internal components from moisture, dust, and mechanical impacts.

3. Integrated Capacitive Sensor: Ensures accurate voltage detection with minimal signal loss.

4. Mounting Flexibility: Can be installed directly on high voltage switchgear cabinets or wall bushings.

5. Corrosion Resistance: Metal components are coated or made of stainless steel to resist oxidation.

Quality Control Process

Quality assurance is a critical element of CG303-40.5 manufacturing. Each sensor undergoes stringent testing and inspection to ensure reliability and compliance.

Manufacturing Steps and QC Measures

1. Raw Material Inspection: Epoxy resin, capacitive components, and metal parts are tested for mechanical and chemical properties.

2. Component Fabrication: High precision machining ensures dimensional accuracy.

3. Assembly: Components are assembled in a cleanroom environment to prevent contamination.

4. Electrical Testing: Dielectric strength, voltage sensing accuracy, and insulation resistance are measured.

5. Environmental Testing: Sensors are exposed to temperature cycles, humidity, and vibration tests.

6. Final Inspection: Visual and functional checks confirm product integrity before packaging.

Quality Assurance and Inspection Reports

Each CG303-40.5 sensor is accompanied by a comprehensive Quality Inspection Report detailing:

• Batch number and serial number

• Material certificates

• Electrical performance test results

• Environmental and thermal testing results

• Calibration certificates

• Compliance with IEC and RoHS standards

This ensures that every sensor delivered to the client is fully traceable and meets international quality benchmarks.

Installation Guidelines

Proper installation ensures optimal performance and safety. The CG303-40.5 sensor should be installed following these instructions:

1. Pre-Installation Check: Inspect for visible damage and verify the mounting location.

2. Mounting: Secure sensor to the switchgear cabinet using the supplied brackets or through-wall bushings.

3. Electrical Connections: Ensure proper grounding and connect measurement terminals according to wiring diagrams.

4. Sealing: Apply appropriate gaskets to maintain IP67 protection.

5. Verification: Perform initial voltage sensing tests to confirm operational accuracy.

Maintenance Guidelines

To maintain optimal performance:

• Routine Inspection: Check for cracks, dirt, or corrosion on the housing every 6 months.

• Cleaning: Use a soft, dry cloth or mild detergent solution for surface cleaning. Avoid abrasive cleaners.

• Calibration: Verify voltage measurement accuracy annually or after any major electrical event.

• Replacement Parts: Only use certified replacement components provided by the manufacturer.

• Documentation: Maintain maintenance records for each sensor.

Safety Considerations

Safety is paramount in high voltage environments:

1. De-energize Equipment: Always turn off switchgear power before installation or maintenance.

2. Personal Protective Equipment (PPE): Use insulated gloves, helmets, and protective clothing.

3. Environmental Protection: Ensure installation area is dry and free of conductive debris.

4. Grounding: Proper grounding prevents electric shock or damage during operation.

5. Warning Labels: All sensors include labels indicating voltage ratings and safety precautions.

Performance Testing

Performance verification ensures that CG303-40.5 sensors operate reliably:

• Voltage Accuracy Test: Confirms ±0.5% measurement precision.

• Insulation Resistance Test: Verifies dielectric strength and leakage current.

• Temperature Stability Test: Ensures sensor performance across -40°C to +85°C.

• Humidity Test: Confirms function under high moisture conditions.

• Shock and Vibration Test: Assesses mechanical durability.

Application Areas

The CG303-40.5 Capacitive Insulator Sensor is suitable for:

• High voltage switchgear monitoring in substations

• Industrial high voltage power distribution systems

• Electrical grid automation and smart switchgear networks

• Power generation plants requiring precise voltage measurement

• Transformer and circuit breaker monitoring

Technical Advantages

1. High Reliability: Long operational life even under continuous high voltage load.

2. Accuracy: Minimizes false alarms and ensures precise voltage readings.

3. Durability: Epoxy resin construction withstands harsh environments.

4. Compliance: Meets IEC, RoHS, and other international standards.

5. Maintenance-Friendly: Simple inspection, cleaning, and calibration procedures.

Packaging and Shipping

• Packaging: Individual sensors are packed in anti-static foam and sturdy cartons to prevent mechanical damage.

• Labeling: Each package includes serial numbers, QC reports, and handling instructions.

• Shipping Conditions: Sensors can be transported via air or sea, with temperature control recommended for long-distance shipments.

Customer Support and Warranty

• Technical Support: 24/7 expert guidance for installation, maintenance, and troubleshooting.

• Warranty: Standard 12-month warranty covering manufacturing defects.

• Replacement Service: Faulty units are replaced after evaluation by certified engineers.

• Training: Optional on-site or virtual training for operational personnel.

The CG303-40.5 Capacitive Insulator Sensor for High Voltage Switchgear Protection combines advanced epoxy resin insulation, high precision capacitive measurement, and environmentally friendly design. It ensures reliable voltage monitoring, safety, and long-term durability. Its comprehensive quality control, testing, and certification processes make it ideal for industrial, substation, and power distribution applications.

By adopting CG303-40.5 sensors, utilities and industries can improve switchgear monitoring, minimize downtime, and ensure safety and compliance with international electrical standards.