Electrical substation videos

Electrical power is amazing and dangerous at high voltages. Electrical substation is a part of an electrical generation, transmission, and distribution system that transform voltage from high to low, or the reverse, or control the flow of electrical power. Substations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer. Generally substations are unattended, relying on SCADA for remote supervision and control. Here is a collection of videos on electrical substations:


Electrical Grid 101 : All you need to know !

Power Substation Overview

3D Animation of 33/11KV Substation (Outdoor Section)

Electrical Substation visit. Inside an Electrical Substation.

6 Electrical Substation Bus Schemes Explained

375 MVA Transformer – A quick look and energising

500kV substation equipment – A quick look

Broken Hill Substation

132/33 kv Substation overview

132kV Circuit breaker – A brief overview

ABB 145 KV SF6 circuit breaker

354KV Disconnect Openning

500,000 volt line opened under load

Electrical Substation Tour

How to Install the TripSaver II Recloser

Substations and Switchyards [PREVIEW]

50KVA distribution transformer 20Kv-400V

Isolator vs Circuit Breaker – Difference Between Isolator and Circuit Breaker

A practical working explanation of ISOLATOR-Dissconnector switch for 220kV switchyard

Isolator opening on load. All video

Difference between Circuit breaker and Disconnector/Isolator | Explained | TheElectricalGuy

Operation of Isolator With Earth Switch in Electrical Substation

Electrical Substations

Brazil-Argentina HVDC Interconnection

110 kV transformer switching on line

Sub Station Training

20KV High Voltage Transformer – Jaycobs Ladder demo


  1. Tomi Engdahl says:

    33kV /11kV Distribution Substation

    View of LTAC, DC and control panels of a substation in Auckland, New Zealand
    The Main o.c.b. panels are 11 kV Reyrolle equipment.

  2. Tomi Engdahl says:

    Zellweger Ripple Injection Plant

    3 Ø DOL start 1050 Hertz ripple frequency.


  3. Tomi Engdahl says:

    Building evacuated, as high-voltage power lines spark fire in ivy-covered power poll

    Building evacuated, as high-voltage power lines spark fire in ivy-covered power poll

  4. Tomi Engdahl says:

    What happens when a tree snaps a powerline

    An Eyewitness News camera was rolling when it happened in Ho-Ho-Kus, New Jersey.

  5. Tomi Engdahl says:

    Tree branch touching a 22000 Volts power line

    In this demo I show what could happen when a tree or tree branch touches a live overhead line.
    22000 Volts 50 Hertz
    Initially some current start flowing to ground, steam develops in the branch and carbon tracking occurs, which increases the current flow.
    At some stage the current will get the whole lot on fire and current increases till a protective earth fault relay trips the supply.
    Often power – lines will re-liven again multiple times so always stay well clear and notify the local power authority.
    On a feeder line, when the tree becomes fully conductive, a massive flash-over occurs at High Voltage and several hundred or even thousands of Amps.
    The risk of step potential is very significant nearby the base of the tree and up to several meters away. e.g. a Voltage of many thousands of Volts between each meter of ground away from the tree stem.

  6. Tomi Engdahl says:

    Testing voltage transformers

    Voltage transformers are used around the clock throughout the energy grid, and their life span can reach up to 40 years. During that time, the effects of aging, regular operation, network faults, or external influences may affect the integrity of a voltage transformer. Utilities perform various tests during commissioning and maintenance to find any irregularities that have been caused by transportation, installation or daily operation.


  7. Tomi Engdahl says:

    Isolating a Disconnecting Circuit Breaker using live line working

  8. Tomi Engdahl says:

    The High Voltage Buzz

    What happens when you lose a rectifier in a HVPS.

  9. Tomi Engdahl says:

    Don’t make contact with overhead power lines

    Using a hot dog to symbolize the human body, SMECO’s safety experts show what happens when the hot dog makes contact with power lines.

    Power Line on Metal Swing Set Between Gibbons Ave and Forrest Ave, Arlington Heights

  10. Tomi Engdahl says:

    Stick Thrown On Powerlines Causing Electricity Arc

    Stick Thrown On Powerlines Causing Short Circuit

  11. Tomi Engdahl says:

    Pre Arrival – FDNY Verbal Transformer Fire Outside Firehouse

    we see fire and smoke on the street as we turn the corner. We immediately informed the members in the firehouse of what was happening outside. Watch as the fire starts to spread, pop, and spark, and as the members clear the area and put the fire out.

  12. Tomi Engdahl says:

    Family monitors snapped power line all night after it sparks

    During Tropical Storm Irma, a Greenville family feared their home would catch fire after a power line snapped and sparked.

  13. Tomi Engdahl says:

    Wellington Electrical Fire on Street || ViralHog

  14. Tomi Engdahl says:

    Potential Transformer (PT) | control Transformer; use

    What is the electrical Potential transformer (PT) working principle? how does single-phase voltage control transformer works? and its concept is explained in this video tutorial. A potential transformer is basically an instrument transformer and it is generally a single phase electrical transformer with high voltage ratio accuracy. But it operates and designed for less power. Potential transformer (PT) types, applications, specification, tests, accuracy class, phase shift error, response time, the equivalent circuit is explained in the lecture. Voltage ratio calibration for control purpose, also called the control transformer, Capacitor type voltage transformer ( CVT ) function as PT is explained in English in transformer tutorial.

  15. Tomi Engdahl says:

    Power line goes down onto trucks setting them on fire

    two trucks on fire

    Live Wire Demonstration

    Dominion Safety Experts travel our service area conducting live wire demonstrations for fire departments and emergency responders to alert them to the dangers of working around power lines.

  16. Tomi Engdahl says:

    Barehanding Transmission Lines

    A look at how Dominion does maintenance work on high voltage transmission lines without taking them out of service

  17. Tomi Engdahl says:


    An excavator struck an underground electrical line. The over current caused arcing and flashing on the overhead line.

  18. Tomi Engdahl says:

    Circuit Breakers 2 [PREVIEW]

    This training program is designed to provide the student with basic information about circuit breakers that are used in substations and switchyards. The course shows how arcs are extinguished in gas-blast and gas-puffer breakers, and covers four types of breaker operating mechanisms: solenoid, motor/spring, pneumatic, and hydraulic.

  19. Tomi Engdahl says:

    Power Line burns and arcs tree and fails. 2015

    In this Video a Windy day makes a power line burn up a tree as it arcs and falls to the ground.



    9 kuukautta sitten
    This was an amazing fault! In my 27-year professional practice, I have never seen an electrical fault lasting this long. The 34kV system seemed to be designed as an ungrounded system or grounded through an impedance. Therefore, this ground fault current would have been limited to a lower value. (I don’t believe there was a phase-to-phase short circuit as the p-p fault would result in much higher fault current which would burnt the line quickly) The low fault current didn’t blow the fuse or caused protection trip. However, this fault would result in local GPR (ground potential rise) increasing. The household electricity is a grounded system. The increased GPR hence damaged the nearby household electrical system through the grounding wire. There were design deficiencies in this 34kV system, e.g. phase-selection ground protection or other alternative protection should be equipped for this system.

  20. Tomi Engdahl says:

    Grounding Induction on a 500KV Power Line

    Tower 16 over 5 grounding the east phase on the PGE Grizzly Malin line between two BPA 500 KV energized lines.

  21. Tomi Engdahl says:

    Hot Sticking a 34 kV Line

    T&D How: Instruction for hot sticking with Kansas City Power & Light.

    Rubber Glove Arm Install

    . This is just a small job, we are setting up this pole so we can change out a pole one span away. Decided to throw the go pro on and see how it turned out. Hope you enjoy!!

  22. Tomi Engdahl says:

    How to Change Out an Overhead Transformer

    Kansas City Power & Light linemen show how to change out an overhead transformer.

  23. Tomi Engdahl says:

    Electrical Safety: Crane Truck Contact

    In this video, a crane truck operator contacts a high-voltage power line. If this happens and you are not in immediate danger, stay put until help arrives. If you are in immediate danger, shuffle at least 10 metres away from the point of contact.

  24. Tomi Engdahl says:

    Electrical Safety: Underground Contact

    In this video, a backhoe operator contacts an underground power line. Before any digging begins, contact BC One Call and locate all underground utilities to reduce the risk of electrical contac

    Electrical Public Safety: Downed Power Line Safety

    A lot of power lines are overhead, but did you know power lines can also be underground? Always call 811 before you dig in order to determine if underground power lines are in your yard.

  25. Tomi Engdahl says:

    Control & Relay Protection Panel for substation-Practical Explanation

    Control and Relay panel is most important equipment of the substation as it work as shield guard for all substation equipments and electrical network. Moreover, these panels are useful to control the flow of electricity as per the Voltage class and detect the faults in transmission lines.

  26. Tomi Engdahl says:

    Electrical Safety :Electrical Accident 132kV Line Clearence

    This video shows the electrical accident in the procession due to non sufficient line clearance in the 132KV High tension Line .

  27. Tomi Engdahl says:

    3M™ Standard MV Cold Shrink Joints with Taped Electrode

    Medium voltage cable jointing demonstration of the 3M™ Standard Cold Shrink Joints With Taped Electrode.


    Welcome to the Department of Redundancy Dept.

    This protection tube doesnt protect anything, therefore another protection tube is applied. Now its time to apply another protection tube to protect the previous two protection tubes. And finally a protection tube is applied on to the previous 3 protection tubes which doesnt protect the connection very well.

    What was the cost of making that splice? $1000

    Mike Folgers A lot! But think about what can happen if that splice would fail in the real world. Cost of digging,troubleshooting,splicing again and repaying the damage done to whoevers property this would fail on.

    That’s nothing when you’re talking about vital power distribution systems… If you wanna use a giant butt connector you can do that.. but if you want it to last and be as strong as the wire surrounding it, you gotta do it right.

    Haha, “How to spend $300 plus half an hour on a single joint”. Oh, and don’t forget to join a “Training” before you use our tape… Incredible, just incredible!

    Step 1: apply a layer of protective tape.
    Step 2: apply a layer of protective tape over the protective tape.
    Step 3: use tape to protect the last layer.
    Step 4: use some tape to seal things done in step 3.
    Step 4: use more tape.
    Tape 5: tape.tape.tape.

    3M™ Standard MV Outdoor Cold Shrink Termination – Part Integrated (QTII)

    Medium voltage cable termination demonstration of the 3M™ Standard Outdoor Cold Shrink Termination – Part Integrated (QTII)


    This is an 11kV installation. Some installers would class this as Medium voltage and others would class it as High voltage, this is influenced by what voltage / network / accessory they are used to working on.

    There is no reason during an installation why there should be an excessive mechanical load (tension) applied to the braid.This method has been used by 3M for over 30 years now and no failures have occurred due to the loss of an earth on the termination due to it losing connection in this manner. If you would like any more information regarding the 3M product range please do not hesitate to ask. Thanks.

  28. Tomi Engdahl says:

    Heat Shrink Cable Joint (HV) – 11kV Trifurcating Transition (3 Core PILC to Triplex Cables)

    SPS heat shrink 11kV cable joints are available to joint 3 core PILC (Paper Insulated Lead Covered) to 3 single core XLPE cables – this includes 11kV cable jointing PILC onto single XLPE cables with copper tape or copper wire screen.

    This type of high voltage trifurcating transition 11kV cable joint is typically used by electrical utilities and contractors to connect or joint existing 3 core PILC cables onto new type 11kV single core XLPE cables, such as Triplex BS7870 cable in the UK.

    Heat Shrink Cable Termination Outdoor (HV) – 11kV 33kV 3 Core XLPE BS6622 Cables

    Thorne & Derrick International are UK leading suppliers and stockists of HV High Voltage Heat Shrink Cable Terminations for medium/high voltage cable networks

  29. Tomi Engdahl says:

    Overhead line connection work

    Connection work with overhead lines had been done via methods of live line work for over an decade.

    Isolating a Disconnecting Circuit Breaker using live line working

    As it becomes more and more common with live working, performed by special trained staff, the question has been raised if it is possible to use the manual links in the DCB-design for live working.
    In a plant taken into service, a test was performed, where a DCB first was linked off from the live switchgear and then reconnected. The test was documented in this video film.

  30. Tomi Engdahl says:

    World’s Biggest Electrical Transformer [With voltage upto 1100kV]

    The world’s first transformer, which Siemens developed and manufactured for high-voltage direct-current (HVDC) transmission systems with what is currently the highest transmission voltage of ± 1,100 kilovolts (kV). The workflows for manufacturing and testing this product were challenging due to the transformer’s extreme dimensions (LxWxH: 37.5 m x 12.0 m x 14.5 m) and shipped to China where the transformer will enable a high-voltage direct-current (HVDC) transmission with low losses over a record distance of 3,284 kilometers with a transmission capacity of 12 gigawatts.

  31. Tomi Engdahl says:

    The Chinese Build the Highest Power Lines in the World

  32. Tomi Engdahl says:

    Power transformers and shunt reactors – Proven history for future success

  33. Tomi Engdahl says:

    Arcing Wires, Downed Power Lines Common Scene After July Storm in Arlington Heights

  34. Tomi Engdahl says:

    Power Line Down with Arcing and Fire: Threatens Home in Mount Prospect

    Primaries are always really scary, its not your average 240v these are 7200v lines you dont even have to touch to get killed. This one here is a MESS, super scary.

    Downed Power Line: Arcing and Fire Threatens Home at Eastwood Ave and Highland St, Mount Prospect

    Com Ed responded within 25 minutes and immediately shut off the power, which stopped the arcing.

  35. Tomi Engdahl says:

    Electric Transmission and Generation: How the Grid Works

    Rusty Williams, Director of Business Development at AFL, talks about electric transmission and generation… how the electric grid works.

  36. Tomi Engdahl says:

    Substation Switching

    Greenfield Power & Light de-energizing a section of the substation for routine maintenance

    375 MVA Transformer – A quick look and energising

    Just a short video showing a large transformer at my work and the sound it makes when energised.

    “Low voltage side – 132,000 volts” :)

    Nice sound of the inrush current. Great video.

  37. Tomi Engdahl says:

    Broken Hill Substation

    A bit of a look at a remote substation, out west in the outback of NSW

    The voltage you get at the end of an unconnected line is caused by the Ferranti effect. Without a load or a very small one, the voltage shoots through the roof. Its cause not just by the capacitance of the line but also the inductance.

    How Does It Work: Substations

  38. Tomi Engdahl says:

    500kV substation equipment – A quick look

    Just a quick look at a high voltage substation

    Electrical Substation Tour

  39. Tomi Engdahl says:

    132kV Circuit breaker – A brief overview

    A look at some of the functions of a high voltage circuit breaker.

    Substation Circuit Breaker Testing

    Circuit Breakers are an important and critical component of the power delivery system. In this video, learn about the components of a circuit breaker, different breaker technologies, and the various breaker testing methods.

  40. Tomi Engdahl says:

    What is a Lightning Arrester

    A short and simple overview of a lightning arrester for the non-technical

  41. Tomi Engdahl says:

    Busbars and Connectors in HV and EHV installations

    Busbars and Connectors in Indoor & Outdoor Installations


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