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Archive: Category «High Voltage»

High Voltage

Hey Mom, look at that big HVDC Transformer!

HVDC transformers are key components of HVDC stations. HVDC converter and inverter stations terminate long-distance DC transmission lines or DC sea cables. This type of transformer provides the interface between… Read more

Mar 19, 2014 | By Edvard

Hey Mom, look at that big HVDC Transformer!
High Voltage

8 main disadvantages of HVDC transmission

Few weeks back I posted an article about advantages of HVDC over HVAC transmission systems. Advantages of HVDC are numerous and very well recognized, but like everything on this earth… Read more

Jan 10, 2014 | By Edvard

8 Main Disadvantages of HVDC Transmission
Energy and Power

Electrical Thumb Rules You MUST Follow (7)

Continued from: Electrical Thumb Rules You MUST Follow (Part 6) Overhead conductor / cable size Transmission / distribution  line (span, height of tower) Types of towers Tower swing angle clearance (metal… Read more

Dec 23, 2013 | By jiguparmar

Electrical Thumb Rules You MUST Follow, part 7
High Voltage

Talking about HV shunt reactor switching (part 2)

Continued from first part: Talking About HV Shunt Reactor Switching (part 1) Scope (explained in previous part) Shunt reactors application (explained in previous part) Closing operation (explained in previous part)… Read more

Jul 31, 2013 | By Nicola

Talking about HV shunt reactor switching (part 2)
High Voltage

Talking about HV shunt reactor switching (1)

These notes aim to give basic idea of the main criticalities related to HV shunt reactor switching, particularly in terms of voltage, and how such problems are faced and solved… Read more

Jul 29, 2013 | By Nicola

Talking about HV shunt reactor switching
High Voltage

High voltage testing – Direct current (DC)

DC tests are used mainly to do “pressure tests” on high voltage cables. Although the cables operate with AC, AC testing is not practical. The high capacitance of the cables… Read more

Jun 01, 2013 | By Edvard

High Voltage

Erection procedure for HV switchgear (Part 2)

Continued from first part: Erection procedure for HV switchgear (Part 1) Positioning of the cubicles should start near to the centre of the switchboard, installing as early as possible the… Read more

May 01, 2013 | By Edvard

ABB Gas-insulated Switchgear ELK-04 Modular System up to 170 kV, 4000 A, 63 kA
High Voltage

Erection procedure for HV switchgear (Part 1)

Before commencing erection of HV switchgear check that all connections are tight on busbars and on main circuits as well as auxiliary circuits. Examine the insulation very carefully, because there… Read more

Apr 29, 2013 | By Edvard

Erection procedure for HV switchgear


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