1. We are a global trading company, we have a large stock of spare parts, we also produce energy storage batteries

2. Our main sales products are industrial automation control equipment accessories, such as: controller board, processor module, communication module, input and output module, power module (various circuit boards and cards), touch screen, servo driver, servo motor, sensor, cable......

3. We can not only provide new products, but also supply cold and discontinued spare parts, all the discontinued parts will go through strict testing to ensure the reliability of product performance, so that customers can buy and use at ease

4. For more information, please contact us: Contact: Amy | Email: saul01@qq.com | Tel(WhatsApp/Wechat): +86-15359298283

ABB PPD113 3BHE020455R0101 Excitation controller

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ABB PPD113 3BHE020455R0101 Excitation controller

ABB PPD113 3BHE020455R0101 Excitation controller

What is grounding? The difference between grounded and ungrounded systems

What is grounding

Grounding is the way we can avoid electrical hazards The main part of the grounding process is the earth, which is a good conductor, so we use low-resistance wires to provide a conductive path for the fault current to the earth

Equipment grounding - Connect non-current-carrying conductive materials such as cable Bridges, junction boxes and motor frames to the ground.

System grounding - In this case, the neutral point of the current-carrying conductor, such as that of a circuit or transformer, will be grounded

What is a ground fault

A ground fault is an unnecessary connection between a system conductor and the ground. Failure can cause many problems, it can shut down power and damage equipment, grounding failure can pose health and safety risks to personnel, and can also cause fire and electric shock

What is an underground system

There will be no intentional connection between the conductor and the earth, no conductor will not be connected to the earth, in the system, there will be capacitive coupling between the system conductor and the ground surface, and an ungrounded system is like a capacitive ground system

Its main feature is its ability to eliminate ground faults without interruption, which provides better continuity of operation during ground faults. It has a distributed capacitance characteristic that provides a neutral point to the system, which can be problematic in the case of a ground fault. A ground fault in one of the lines will cause the full line voltage to appear on the other two phases, and will cause higher than normal voltages in all insulation layers of the underground phase

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ABB PPD113 3BHE020455R0101 Excitation controller