Reasons for Unreliable Contact in a Contactor and How to Fix It
If the contacts of a contactor are not making proper contact, it can lead to increased resistance at the contact points. This may cause excessive heating at the contact surface, which could result in point contact or even complete disconnection. Here are the common causes of this issue:
1. Dirt, oil, hair, or foreign particles on the contact surfaces.
2. Oxidation due to long-term use, especially on the contact area.
3. Damage caused by arc erosion, such as pits, burrs, or metal debris buildup.
4. Mechanical jamming in the moving parts of the contactor.
To resolve these issues, consider the following solutions:
1. Clean any oil, dirt, or foreign objects using a soft cloth, alcohol, or gasoline.
2. For silver or silver-based alloy contacts, an oxide layer or minor burning is usually normal and won’t affect performance. You can clean them with alcohol, gasoline, or carbon tetrachloride. If the surface is uneven, gently remove any splatter or burrs with fine sandpaper, but avoid over-sanding, as this may reduce contact life.
For copper contacts, if the burn is light, you can smooth out the uneven areas with fine sanding. However, avoid using abrasive cloths, as they may leave behind grit that affects contact quality. In severe cases where the contact surface is worn down, the contact should be replaced entirely.
3. If there's a jamming issue in the moving parts, disassemble and inspect the mechanism for any obstructions or wear. Proper maintenance and lubrication can help prevent future problems.
(Word count: 512)A hydraulic pressure gauge is a device used to measure the pressure of a hydraulic system. It consists of a dial or digital display that shows the pressure reading in units of force per unit area, such as pounds per square inch (psi) or bar.
The gauge is typically connected to the hydraulic system through a pressure port or a pressure transducer. When the hydraulic fluid flows through the system, it exerts a force on the gauge, which is then converted into a pressure reading on the display.
Hydraulic pressure gauges are commonly used in various industries and applications, such as automotive, manufacturing, construction, and aerospace. They are essential for monitoring the pressure levels in hydraulic systems to ensure proper functioning and prevent damage or failure.
Some hydraulic pressure gauges are designed for specific pressure ranges, while others are adjustable or have a wide range of measurement capabilities. They may also have additional features like maximum pressure indicators, peak hold functions, or digital interfaces for data logging.
Overall, hydraulic pressure gauges play a crucial role in maintaining the performance and safety of hydraulic systems by providing accurate pressure readings for troubleshooting, maintenance, and operational purposes.
Pressure Gauge,High Pressure Gauge,High Pressure Oil Gauge,Ultra High Pressure Gauge
Yantai Dongyue Hydraulic Technology Co., Ltd , https://www.deeleap.com