Prevent leakage of mining cables

In the prevention experiment, it was found that the leakage current of phase A was too large (when the voltage was added to 26 kV, the leakage current had reached MA), so the maintenance was suspended. Insulation resistance measured:! a=!b==0M".
Measured process.......

What kinds of common access control systems?

As the name implies, the access control system is a system for regulating the entrance and exit channels. It is developed on the basis of traditional door locks. Common access control systems include: password recognition access control system, credit card recognition access control system, b.......

Stainless steel vault door purchase and use skills

For the purchase of stainless steel vault doors, first look at the steel plate: if you buy carbon steel, it depends on whether the manufacturing process is cold-rolled steel or hot-rolled steel. Usually, we choose cold-rolled steel to be harder. If we choose If it is stainless steel, it is ne.......

Different perspectives on China and the US tire ** case lost

Zhou Shizhen, executive director of the WTO Research Association of China, is an "overriding case" in which the United States has imposed anti-dumping sanctions on Chinese tires. In the United States, the litigation was initiated by the union-style U.......

The latest dump truck introduction

Dump trucks are vehicles that can automatically load and unload cargoes. They are used in construction projects, factories, and coal mining industries. With .......