MODUL 2 STL / Modul 5 ISDIS Pengujian Tahanan Isolasi

Summary

This video demonstrates the process of testing and inspecting electrical distribution equipment in a laboratory setting. It covers the procedures for deactivating and activating VCB (Vacuum Circuit Breaker) using various tools like a VCB stick, key, and micrometer. The testing involves ensuring the absence of residual voltage, grounding the equipment, and measuring contact resistance with precise instruments. The video walks through steps such as checking VCB status, safely testing the equipment, and recording results. It concludes with the reassembly and securing of the electrical components, ensuring everything is properly shut down and stored.

Takeaways

• 😀 The process begins with safety checks to ensure no residual voltage in the cubicle body using a voltage detector.
• 😀 The VCB (Vacuum Circuit Breaker) status is verified before being activated or deactivated using a VCB stick.
• 😀 The script emphasizes the use of various tools like the VCB stick, micro-ohmmeter, and grounding stick to perform tests safely.
• 😀 Ensuring the VCB is off is crucial before proceeding with further testing, as indicated by a symbol of '0' on the VCB.
• 😀 Proper usage of safety equipment such as a grounding stick is emphasized to prevent electrical hazards during testing.
• 😀 The grounding of the cubicle is performed using a grounding stick, followed by unlocking the cubicle door and opening it for further operations.
• 😀 The testing includes measuring contact resistance with a micro-ohmmeter, which is connected to the terminals and powered on for testing.
• 😀 During testing, a current of 100A is injected, and the contact resistance is measured and noted (e.g., 27.3 micro-ohms).
• 😀 The script illustrates the process of energizing the VCB to perform necessary testing by turning the knob and pressing the VCB button.
• 😀 The script concludes with the disconnection and proper handling of equipment, ensuring safety and the proper resetting of all components before completion of the process.

Q & A

What is the main focus of the laboratory session in the transcript?

The main focus of the laboratory session is on testing and inspecting electrical distribution and utilization equipment, specifically related to circuit breakers (VCB), electrical connections, and contact resistance measurements.

What equipment is used to activate and deactivate the VCB (Vacuum Circuit Breaker)?

A stick VCB is used to activate and deactivate the VCB during the testing process.

What is the purpose of the ground socket (ground sck) in the testing process?

The ground socket is used for grounding the equipment to ensure safety by preventing electrical hazards during the testing and inspection process.

How is the body of the cubicle tested for residual voltage?

The body of the cubicle is tested for residual voltage using a voltage detector to ensure that there is no remaining voltage on the cubicle before further handling.

What is the significance of the symbols displayed on the VCB during the test?

The symbols on the VCB indicate its operational status. A symbol displaying '1' indicates that the VCB is in the 'ON' position, while '0' signifies that it is 'OFF'.

How is the contact resistance of the electrical components measured?

The contact resistance is measured using a micro-ohmmeter, where probes are connected to the terminals of the electrical components to measure the resistance value.

What is the procedure to ensure safety when injecting current into the circuit for testing?

Before injecting current, the area around the equipment is checked to ensure no people are nearby. The test is then initiated, and the current is injected at a specified level (100 amperes).

What value of contact resistance was measured during the tests?

The measured contact resistance values were approximately 27.3 micro-ohms, 26.9 micro-ohms, and 26.6 micro-ohms, which were recorded for different terminals.

What actions are taken after the test is completed?

After completing the test, the equipment is safely shut down, and all cables are disconnected. The cubicle doors are closed, and grounding connections are removed. The equipment is then returned to its original configuration.

What is the role of the heavy-duty connector (often referred to as the 'elephant trunk') in the procedure?

The heavy-duty connector, or 'elephant trunk', is used to connect the electrical components, ensuring proper electrical contact for testing and measurement during the process.