PRAGATI PROCESS CONTROLS

PLC-based mV Drop Test and Temperature Rise Test are essential tests in electrical systems and devices, particularly to ensure the integrity of electrical connections, cables, and components.

PLC-Based mV Drop Test
Purpose: The millivolt (mV) drop test is used to measure the voltage drop across electrical joints or connections to evaluate their resistance and quality. The test identifies any issues like poor or loose connections, which could lead to high resistance, overheating, or failures.

PLC-Based Temperature Rise Test
Purpose: This test is conducted to assess the ability of electrical devices (like switchgear, transformers, etc.) to operate under normal conditions without exceeding safe temperature limits. It helps in identifying issues related to overheating that could lead to failures or safety hazards.

Benefits of PLC Automation:

• Precision: PLC ensures more accurate control over the test parameters and data logging.
• Real-Time Monitoring: PLCs can monitor temperature and voltage continuously, allowing immediate detection of any anomalies.
• Data Management: Automated logging of test results helps in documentation and compliance with industry standards.

A temperature rise test setup in the electrical field is used to measure the temperature increase of electrical components or equipment under a specified load, primarily to assess their safety and longevity by identifying potential overheating issues that could damage insulation, cause fires, or compromise the functionality of the device; essentially, it's a test to ensure electrical components operate within safe temperature limits under normal operating conditions. 

Contact Resistance Tester / Ductor Testing

Introduction: Contact resistance is the resistance encountered at electrical connections due to surface conditions. High contact resistance can lead to poor connections, causing issues such as increased losses, reduced current-carrying capacity, and dangerous hot spots. Contact resistance testing measures the resistance of connections in devices like switches, breakers, relays, joints, and connectors to identify and address problems such as corrosion or poor connections.

Importance:

• High Current Applications: Essential for connections that carry large amounts of current, such as circuit breakers, busbars, and cable joints. High resistance can result in overheating and inefficiency.
• Safety and Reliability: Testing helps detect potential issues early, preventing future problems and ensuring safe, efficient operation of electrical systems.

Major Applications:

1. Circuit Breakers and Isolators: Ensures reliable operation and prevents overheating.
2. Shunts and Busbars: Validates efficient power distribution and accurate current measurement.
3. Cables and Joints: Detects issues in cable connections and joints to maintain performance.
4. Metallurgical Applications: Assesses the quality of metal contacts and connections in various processes.

Testing Process:

1. Setup: Connect the tester to the points of interest.
2. Measurement: Apply a known current and measure the voltage drop to calculate resistance.
3. Analysis: Compare results to acceptable values and perform maintenance as needed.

Advantages:

• Early Detection: Identifies potential issues before they cause failures.
• Efficiency: Ensures optimal performance and reduces power losses.
• Safety: Prevents dangerous hot spots and enhances system safety.

Comprehensive Testing: The temperature rise test setup is designed for manufacturers to test both high and low voltage electrical products before delivery.
Dual Functionality: It combines two key functions – generating large current and conducting temperature tests for precise performance evaluation.
Enhanced Efficiency: The system is user-friendly and improves working efficiency, making it convenient for operation.
Applicable Industries: Ideal for use in power plants, power distribution stations, electrical appliance manufacturing factories, research institutes, and laboratories.
Automation and Data Logging: Additional features like data logging and automated test benches through software programming are provided for seamless operation and monitoring.
Multi-channel Temperature Recorder: Utilizes digital synchronous sampling technology, offering fast test speeds, high precision, easy operation, and a sleek design.