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Installation regulations and requirements for drop fuses
1. The porcelain parts should be good, and the fuse tube should not have moisture absorption, expansion, or bending. The center line of the upper and lower contacts of the fuse tube and the axis of the fuse tube should be in the same plane and must not be twisted. 2. The drop-out fuse should be i...Read more -
What are the common failure causes of drop-out fuses?
What are the common failure causes of drop-out fuses? The fuse is not normally blown. The fuse blows and causes the tube to drop. In theory, the fuse protection has played a role. However, it can be clearly seen from the statistical charts of previous years that abnormal fusing has time and clima...Read more -
Environmental conditions and use requirements for drop-out fuse installation
1. Installation and use environmental conditions of drop-out fuse Environmental conditions for installation and use: 1). The normal operating conditions of the product: the ambient temperature is not higher than +40 degrees and not lower than -40 degrees; the altitude does not exceed 1000m; the m...Read more -
How to avoid the failure of fuse cutout?
It’s important to purchase qualified products. The capacity of the configured fuse should be selected according to the relevant regulations: 1. The primary side fuse of the transformer is used as the backup protection for the transformer itself and the secondary side outgoing fault. ...Read more -
How to choose Tension Clamp?
There are two common situations when we select the tension clamp for the power line. When the tension clamp is clamped on the outer diameter of the wire, the type of the tension clamp to be used is selected according to the outer diameter of the wire. The same specification has different steel co...Read more -
Explanation of the installation method of fuse cutout
The fuse cutout and the load break fuse cutout are outdoor high-voltage protection electrical appliances. It is installed on the high-voltage side of the distribution transformer or on the branch trunk line of the distribution line, and is used for short-circuit protection of the transformer and ...Read more -
How to install a drop-out fuse?
what should we notice when we install a fuse cutout? The fuse cutout requires special fittings to be installed firmly in accordance with the specifications. The product should be checked before installation. 1. The porcelain parts should be good, and the fuse tube should not be swollen or bent du...Read more -
What is a ring main unit? Why is it suitable for general residential high-voltage power supply to adopt ring main unit power supply?
Why is it called a ring main unit: In industrial and mining enterprises, residential areas, ports and high-rise buildings and other AC 10kv power distribution systems, due to the small load capacity, the high pressure circuit is usually controlled by load switches or vacuum circuit breakers, and ...Read more -
The use method and working principle of insulation piercing clamp
Generally speaking, people still have concerns about the conductivity of insulated piercing clamps. Can such a few small thorns withstand such a large current? We analyzed the working principle of the parallel channel clamp and the insulation piercing clamp from the principle of conducting curren...Read more -
How to select requirements for fuses of distribution transformers
For distribution transformers with a capacity of 100kVA and below, the high-voltage side fuse should be selected as 2-3 times the rated current of the transformer. For those with a capacity above 100kVA, the high-voltage side fuse should be selected as 1.5-2 times the rated current of the transfo...Read more -
The features of gapless metal oxide arresters:
Features of gapless metal oxide arresters: (1) The structure of gapless metal oxide arrester is simple. (2) The gapless metal oxide arresters is of good protection performance, the resistors have good nonlinear volt-ampere characteristics, the current passing through the arrester under normal wor...Read more -
What is the difference between ring main unit and switch cabinet?
The switchgear is divided into ring main unit, center cabinet, GG1A, etc. There are also many types of ring main unit. The so-called “ring network cabinet” means that each power distribution branch is equipped with a switch cabinet (outgoing switch cabinet), and the bus bar of this sw...Read more