Uploaded March 2020 | Updated September 2026, 2 weeks ago
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Learn how electrical bushings work! Learn all of a bushing’s components, design features, and how it works! Electrical bushing’s are present throughout the power generation, transmission, distribution, and electrical engineering industries, so why not learn about them!
Like this video? Then check out our other videos!
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▶️Introduction
Electrical bushings allow live conductors to be passed through grounded partitions, walls, or tanks etc. without raising their electrical potential (voltage). They perform this task by insulating the central conductor.
The example used in this video shows a 3D animation of an oil insulated porcelain solid/bulk bushing; this bushing is often used with electrical transformers (hermetic and conservator type). Another common bushing design type is the condenser/capacitance graded bushing.
Bushings are commonly seen at substations, power stations and generally in the power engineering industry (generation, distribution and transmission of electricity). Bushings may be of various designs, but are roughly split into two main designs, the bulk/solid type, and the condenser (capacitor grade) type.
The 3D model used in this video was loaded through a web browser at saVRee.com.
How Electrical Bushings Work
Electrical current flowing through a conductor will create a magnetic field and an electric field. The magnetic field is of little interest concerning bushings, but the electric field is. The electric field strength increases as the voltage potential increases. A higher voltage potential will always try to flow to a lower voltage potential e.g. ground. Bushings prevent this by insulating the conductor from the grounded component through which it passes.
Bushing Components
A bushing consists of a conductor, terminals and some form of insulator. The insulator chosen in this video is manufactured from porcelain.
Mineral oil is added to a void space surrounding the conductor and it also acts as an insulator.
To aid with keeping the bushing clean and to maintain resistance on the creepage path (leakage path), rain sheds are used.
The porcelain body is hot glazed as this puts the porcelain under compression stress, which makes it stronger mechanically. Porcelain is weak when tensile stress is applied. The glaze also helps keep the bushing clean.
Electrical arcing horns will be discussed in the bushings course (visit saVRee.com for more info).
**********
#saVRee_Nuggets, #saVRee
Want to LEARN about engineering with videos like this one? Then visit:
courses.savree.com
Want to TEACH/INSTRUCT with the 3D models shown in this video? Then visit:
savree.com/en/teach-engineering
Want to TRAIN your workforce or employees using videos like this one? Then visit:
savree.com/en/enterprise-engineering-training
And don't forget to sign-up to our newsletter for free engineering Handbooks, Videos, and Courses.
courses.savree.com/pages/email-signup
******************************************************************
Learn how electrical bushings work! Learn all of a bushing’s components, design features, and how it works! Electrical bushing’s are present throughout the power generation, transmission, distribution, and electrical engineering industries, so why not learn about them!
Like this video? Then check out our other videos!
🚢 Marine Diesel Two Stroke Engine - How it Works! - youtu.be/IM8rxp8qB8k
🚢 Ship Parts and Terminology Explained! - youtu.be/Xm-F2rPU_NU
⚙️How Deaerators Work! - youtu.be/M_jOsTWVIH8
⚙️How Shell and Tube Heat Exchangers Work! - youtu.be/OyQ3SaU4KKU
⚙️How Power Grids Work! - youtu.be/fUWRyhsutL8
⚙️How Watertube Boilers Work! - youtu.be/fUWRyhsutL8
⚙️How Dams Work (Hydro Dams)! - youtu.be/ztM6tL6LtFs
💡Control Valve Types (Gate Valve, Globe Valve etc.)! - youtu.be/OyQ3SaU4KKU
💡Transformer Parts and Functions! - youtu.be/3osmO4FQ2Yg
💡Plate Heat Exchangers Explained! - youtu.be/7TTF4aU3Pcs
📚Want to learn more about engineering?
Then join saVRee to access over 45 hours of engineering video courses! New courses every month!
courses.savree.com
Hope to see you on a course soon! 👋
🏫Want to use the 3D model in this video to present, instruct, or teach? Simply join saVRee! We have over 400 engineering models that will make your life a lot easier!
savree.com
📱Check out our socials!
https://linktr.ee/savree
📖You can learn more about engineering in our technical encyclopedia: savree.com/en/encyclopedia
▶️Introduction
Electrical bushings allow live conductors to be passed through grounded partitions, walls, or tanks etc. without raising their electrical potential (voltage). They perform this task by insulating the central conductor.
The example used in this video shows a 3D animation of an oil insulated porcelain solid/bulk bushing; this bushing is often used with electrical transformers (hermetic and conservator type). Another common bushing design type is the condenser/capacitance graded bushing.
Bushings are commonly seen at substations, power stations and generally in the power engineering industry (generation, distribution and transmission of electricity). Bushings may be of various designs, but are roughly split into two main designs, the bulk/solid type, and the condenser (capacitor grade) type.
The 3D model used in this video was loaded through a web browser at saVRee.com.
How Electrical Bushings Work
Electrical current flowing through a conductor will create a magnetic field and an electric field. The magnetic field is of little interest concerning bushings, but the electric field is. The electric field strength increases as the voltage potential increases. A higher voltage potential will always try to flow to a lower voltage potential e.g. ground. Bushings prevent this by insulating the conductor from the grounded component through which it passes.
Bushing Components
A bushing consists of a conductor, terminals and some form of insulator. The insulator chosen in this video is manufactured from porcelain.
Mineral oil is added to a void space surrounding the conductor and it also acts as an insulator.
To aid with keeping the bushing clean and to maintain resistance on the creepage path (leakage path), rain sheds are used.
The porcelain body is hot glazed as this puts the porcelain under compression stress, which makes it stronger mechanically. Porcelain is weak when tensile stress is applied. The glaze also helps keep the bushing clean.
Electrical arcing horns will be discussed in the bushings course (visit saVRee.com for more info).
**********
#saVRee_Nuggets, #saVRee
