Cegah Kebakaran Rumah Dengan Megger Kabel

Summary

This video explains how to test the quality of electrical cables at home using a megger (mega-ohm tester). The tester is used to measure the insulation resistance of cables, ensuring they meet safety standards and preventing electrical hazards like fires. The process involves setting the tester to 500 volts DC and measuring the resistance, which should be above 650 megaohms. The video emphasizes the importance of testing new and old wiring, particularly cables over 15 years old, to maintain electrical safety in homes and buildings. Proper use of the megger ensures safe electrical installations and prevents potential dangers.

Takeaways

• 😀 The Megger (Mega Ohm Tester) is used to test the insulation quality of electrical cables by applying a 500V DC voltage.
• 😀 The resistance value for a good cable should be above 650 ohms when using the Megger tester.
• 😀 It's important to ensure the cables are disconnected from any devices or switches before performing the test.
• 😀 The Megger test can help identify potential electrical hazards, like poor quality or deteriorated cables, which could lead to fire risks.
• 😀 Wilson PVC cables (2 * 1.5mm²) are highlighted as a good example, as they meet SNI standards and are flame retardant.
• 😀 Regular testing is recommended for cables that are over 15-20 years old, as electrical components degrade over time.
• 😀 The Megger tester should be set to the 'insulation' mode to perform the test with the appropriate voltage and resistance settings.
• 😀 Loose or poor-quality connections can cause slow rises in resistance, which may require cable maintenance or reconnection.
• 😀 Properly tested cables should show a resistance that increases rapidly and stabilizes at 'OL' (overload), indicating healthy insulation.
• 😀 For new installations, it is essential to test the cables to ensure their quality and compliance with safety standards.
• 😀 The Megger tester can help technicians ensure that electrical systems, especially in homes or office buildings, are safe and compliant with industry standards.

Q & A

What is the purpose of testing electrical cables with a Meger?

The purpose of testing electrical cables with a Meger (Mega Ohm tester) is to ensure that the insulation resistance is sufficient to prevent electrical hazards, such as fires, due to faulty or degraded cables.

What kind of electrical hazards can result from poor-quality cables?

Poor-quality cables can lead to electrical fires in both residential and office environments, primarily caused by faulty insulation or improper connections.

How does the Meger test work?

The Meger test works by applying a 500V DC voltage to the cable's insulation and measuring its resistance. If the insulation resistance is below a certain threshold (650 Megaohms), it indicates potential issues with the cable.

What should be the minimum insulation resistance for a cable to be considered safe?

The minimum insulation resistance for a cable to be considered safe is 650 Megaohms. If the resistance falls below this value, the cable may have faulty insulation or poor connections.

Why is it necessary to disconnect the cable from other devices during testing?

It is necessary to disconnect the cable from other devices to ensure accurate test results. If the cable is still connected, it could cause a short circuit or incorrect measurements.

What kind of cables are typically tested with a Meger?

Cables such as Wilson brand cables, which comply with Indonesian and international standards (SNI and IEC), are commonly tested with a Meger. These cables are known for their high quality and safety features.

How do you set up the Meger for testing?

To set up the Meger, adjust the selector switch to the 'insulation' position, set the voltage to 500V DC, and ensure the resistance range is set to 2000 Megaohms. The cable under test should be isolated and not connected to any other devices.

What happens if the resistance reading is too low during the Meger test?

If the resistance reading is too low (below 650 Megaohms), it indicates that the insulation is not effective and could lead to electrical hazards. This could be due to faulty insulation or poor connections in the cable.

How should you interpret the results if the Meger shows 'OL' (overload)?

'OL' (overload) indicates that the resistance is higher than the tester's range, which means the insulation is in excellent condition and is effectively preventing electrical leakage.

When is it recommended to perform a Meger test on electrical cables?

It is recommended to perform a Meger test when a new electrical installation is completed, or when cables have been in use for over 15 to 20 years, as cable quality tends to degrade over time.