Guangzhou Chengmin Electronic Technology Co., Ltd. is a professional supplier of high-quality megohmmeters, insulation resistance testers, and ground resistance meters, offering both imported and domestic brand options. We have a wide range of products available for immediate delivery. If you're looking for reliable and accurate testing equipment, feel free to contact us today for inquiries and purchases!
Proper use of the MY40 megohmmeter is essential to ensure accurate measurements of insulation resistance. In modern life, electricity plays a vital role in daily activities, and with it comes the need for electrical safety. Electrical devices such as motors, cables, and household appliances rely on proper insulation to function safely. Over time, exposure to heat and moisture can cause insulation materials to degrade, reducing their resistance and potentially leading to leakage or short-circuit issues. To prevent such problems, regular measurement of insulation resistance is crucial.
The insulation resistance is typically measured in megaohms, and low-voltage measurements may not reflect the true condition of the insulation under high voltage. This is where the megohmmeter, also known as an insulation resistance tester, becomes indispensable. It provides a high-voltage power supply during testing, which differentiates it from standard multimeters. When used correctly, the megohmmeter ensures accurate and reliable results. However, improper usage can lead to errors, so it's important to follow the correct procedures.
Before using a megohmmeter, several precautions should be taken:
1. Ensure the device under test is completely powered off, and its terminals are shorted to ground.
2. Check for any potential induced voltages that could affect the measurement.
3. Clean the surface of the object being tested to minimize contact resistance.
4. Verify that the megohmmeter is functioning properly by checking the "0" and "∞" positions.
5. Place the megohmmeter on a stable, level surface away from magnetic fields and strong currents.
When measuring, connect the "L" (line), "E" (earth), and "G" (guard) terminals correctly. The "G" terminal helps eliminate surface leakage currents, especially when testing cables or other components with high humidity or dirty surfaces. Incorrect wiring, such as reversing the "L" and "E" terminals, can introduce significant errors into the measurement.
To ensure accuracy, always connect "L" to the conductor, "E" to ground, and "G" to the shielded part of the device. Reversing these connections can result in incorrect readings due to improper current paths through the meter.
In conclusion, accurate insulation resistance measurement requires proper use of the megohmmeter. Following the correct procedure ensures reliable results and enhances the safety of both personnel and equipment.
Explore our full range of insulation resistance testers from Japan Yokogawa and Hioki:
**Yokogawa Models:**
MY40-01, MY10-01, MY10-02, MY10-03, MY10-04, MY10-05, 3213A41, 3213A42, 3213A43, 3213A44, 3213A45, 2406E31, 2406E41, 2406E32, 2406E42, 2406E33, 2406E43, 2406E34, 2406E44, 2406E35, 2406E45
**Hioki Models:**
IR4016-20, IR4017-20, IR4018-20, IR4057-20, IR4056-20, 3455-20, 3490, 3151, FT6380
Also available: Domestic brands like Shanghai Sixth Factory, Kanghai, Beijing Far East, Hangzhou Chaoyang, Dongshun, Nanjing Jinchuan, Zhengda, etc.
**Domestic Megohmmeter Specifications:**
- ZC25-1: 100V, 100MΩ
- ZC25-2: 250V, 250MΩ
- ZC25-3: 500V, 500MΩ
- ZC25-4: 1000V, 1000MΩ
- ZC25B-1: 100V, 100MΩ
- ZC25B-2: 250V, 250MΩ
- ZC25B-3: 500V, 500MΩ
- ZC25B-4: 1000V, 1000MΩ
- ZC-7-1: 500V, 1000MΩ
- ZC-7-2: 1000V, 2000MΩ
- ZC-7-3: 2500V, 5000MΩ
- ZC-7-4: 5000V, 10000MΩ
- ZC8-1: 0-1-10-100Ω
- ZC8-2: 0-1-10-100-1000Ω
- ZC11D-1: 100V, 500MΩ
- ZC11D-2: 250V, 1000MΩ
- ZC11D-3: 500V, 2000MΩ
- ZC11D-4: 1000V, 5000MΩ
- ZC11D-5: 2500V, 10000MΩ
- ZC11D-6: 100V, 20MΩ
- ZC11D-7: 250V, 50MΩ
- ZC11D-8: 500V, 100MΩ
- ZC11D-9: 50V, 200MΩ
- ZC11D-10: 2500V, 2500MΩ
- ZC-18: 0-1-10-100 (Explosion-proof type)
- ZC29B-1: 0-1-10-100-1000Ω
- ZC29B-2: 0-1-10-100Ω
For more information, visit [http://news.chinawj.com.cn](http://news.chinawj.com.cn).
Editor: Hardware Business Network Information Center
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