Blogs

Stories and blogs of ours, documents and standards of industry, news of domestics and abroad

What is Composite Insulator?

A composite insulator is a special insulation control component that plays an important role in overhead transmission lines. There are many types of polymer insulators. What is Composite Insulator Made of? The Composite insulator is also called the synthetic insulator, non-ceramic insulator, polymer insulator, rubber insulator, etc. The main structure is generally composed of an …

What is Composite Insulator? Read More »

What is the difference between onload and off load switch disconnectors?

On load switch disconnectors: it is a switch disconnector that can open and close the circuit on load and perform the isolation required. Off Load switch disconnectors: It is a switch disconnector that must open and close the circuit when the load is off (it can not operate on nominal load) – For example – …

What is the difference between onload and off load switch disconnectors? Read More »

WHAT ARE THE TEST SWITCHES AND ACCESSORIES?

Test switches are designed and manufactured to allow quick and easy multi-circuit testing of switchboard relays, meters, and instruments by any conventional system. These test switches and related test plugs have the features necessary for applications involving the measurement of individual currents and voltages associated with substation instrumentation and protection devices. To learn more about …

WHAT ARE THE TEST SWITCHES AND ACCESSORIES? Read More »

What are the advantages and disadvantages of a single break isolator over a double break isolator?

Advantage: Improved swing arm stability for the higher voltage switches over 300 kV. Since the switchblade pivots in the center and breaks at both ends, the horizontal rotation is inherently more stable with regard to mechanical vibration.Improved switching in high winds since the blade is connected to the center, the wind force acting on each …

What are the advantages and disadvantages of a single break isolator over a double break isolator? Read More »

How to protect grounding from lightning strikes by lightning arrester?

Lightning protection grounding includes two concepts. One is lightning protection, which prevents equipment damage caused by direct lightning strikes. Second, electrostatic grounding, lets electrostatic go into the underground, this will ensure the normal work of electrical equipment and personal safety. The grounding device is composed of a grounding body and a grounding wire. Its function …

How to protect grounding from lightning strikes by lightning arrester? Read More »

Do you know how many existing problems of post porcelain insulator?

① External insulation problem:With the deterioration of the operating environment, the anti-pollution flashover ability of porcelain post insulators is insufficient. For UHVDC, pure porcelain post insulators require a large creepage distance and structure, while too high post insulators are difficult to achieve strong bending and seismic strength. ② Earthquake resistance:The high-voltage porcelain insulator is always …

Do you know how many existing problems of post porcelain insulator? Read More »

What are the Main Characteristics of Post Insulators?

Main Characteristics of Post Insulators High mechanical strength: Post-insulators face compression, torsion, and bending forces every day. As a result, the insulator must have high mechanical properties to overcome these forces, or it would simply collapse and cost more to replace. Solid and puncture-proof: Being in an atmospheric space and exposed to pollution, rain, and …

What are the Main Characteristics of Post Insulators? Read More »

What is a Porcelain post insulator? Do you know the types & tests of post porcelain insulators?

Porcelain post insulators are widely used on electrical power substations and transmission line systems. A post insulator is a High Voltage (HV) type of insulator which is designed based on the IEC, ANSI, and other standards. They can be used in a power system of up to 1100 kV. In transmission line applications, post insulators …

What is a Porcelain post insulator? Do you know the types & tests of post porcelain insulators? Read More »