1. Basic principlesThe relay protection device must have the function of correctly distinguishing whether the protected element is in normal operation or has a fault, whether it is a fault in the protection zone or a fault outside the zone. To realize this function, the protective device needs to be
1. PLC manufacturersTo determine the PLC manufacturer, you should mainly consider the requirements of equipment users, the designer's familiarity and design habits with PLCs from different manufacturers, the consistency of supporting products, and technical services. Considering the reliability
Transformer noise is an inherent characteristic of transformer operation. Relevant national standards have strict sound level limits for it. However, with the improvement of users' awareness of environmental protection, complaints reflecting the excessive noise of the transformer site are gradua
The distribution box is an essential power distribution device in modern homes and businesses, and its installation and use are crucial to the safety and stability of the power system.But when it comes to the taboos in the installation of distribution boxes, most of the electrical personnel must hav
The specific process of current transformer (CT) replacement includes the removal of old transformers and related secondary cables, the installation of new transformers and the connection of secondary cables, etc. Due to the change of the secondary circuit of the current involved in the replacement
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