When performing maintenance on high-voltage electrical equipment, it's essential that the personnel involved are properly trained and have a thorough understanding of the internal structure of the devices. The technical staff from the user’s organization should develop detailed and practical maintenance procedures before starting any work. It is recommended to conduct dismantling and repairs during dry weather conditions when the atmospheric humidity is below 60% to reduce the risk of moisture-related damage. Additionally, precautions must be taken to prevent dust, impurities, or moisture from entering the internal components. In some cases, using dry hot air continuously within the chamber can help maintain a dry environment inside the equipment.

2. Analysis and Identification of Abnormal Sounds

Abnormal internal discharges in high-voltage equipment often produce sounds similar to small raindrops hitting a metal casing. These discharge sounds typically have a lower frequency compared to normal operational noise, making them distinct but sometimes difficult to detect. In certain situations, it may be necessary to place your ear close to the outer casing to hear the sound clearly. If the discharge sound is faint or unclear, it might be challenging to determine whether it originates from inside or outside the device. To address this, periodic partial discharge measurements and noise analysis techniques can be employed to ensure accurate diagnosis and prevent potential failures.

3. Personal Safety Protection When Using High-Voltage Appliances

(1) Indoor SF6 high-voltage equipment should be completely sealed off from the main control room to prevent gas leakage and ensure the safety of personnel working nearby. (2) Proper ventilation systems must be installed in rooms housing SF6 equipment, and regular indoor ventilation should be carried out to maintain safe air quality. This helps in reducing the risk of exposure to harmful gases and ensures a safer working environment for all staff members.

Solenoid Valve

NINGBO DOTEC is a professional solenoid valve manufacturer and exporter in China for many years.

Options:
1. Port Size: 1/8'' to 3'', etc
2. Connection: Thread, Flange, Push-In, etc
3. Body Material: Brass, Stainless Steel, Aluminum Alloy, UPVC, CPVC, PTFE, PA, PP, POM, etc
4. Seal Material: NBR, EPDM, FKM, FFKM, PTFE, PEEK, Silicone, etc
5. Working Medium: Water, Air, Steam, Gas, Liquid, Chemical, Refrigerant, etc
6. Function: 2 way, 3 way or Multi ways; normally closed or normally open, etc
7. Voltage: 12VDC, 24VDC, 24VAC, 110VAC, 220VAC, other voltages can be customzied

Solenoid Valve, Electromagnetic Valve, Solenoid Control Valve, Electric Solenoid Valve

NINGBO DOTEC AUTOMATION CO., LTD , https://www.ningbodotec.com