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The type of connection generally used at the beginning of high tension transmission line is – (a) delta-delta (b) Start-star (c) star-delta (d) delta-star
By BYJU'S Exam Prep
Updated on: September 25th, 2023
The type of connection generally used at the beginning of high tension transmission line is delta-star. There is a very high voltage at the secondary side at the start of the high-tension transmission line. By utilizing a step-up transformer, this is accomplished. The primary side of the high-tension transmission line is a low voltage at the starting, and the secondary side has a high voltage.
- Delta and star connections are ideal on the primary and secondary sides for this use.
- because the line voltage is three times the phase voltage in a star connection.
- As a result, insulating costs are reduced. Additionally, the price of insulation for the entire transmission line is decreased.
Type of Connection
Below are listed various connections and their corresponding transformers.
Connections |
Applications |
Delta primary, Delta Secondary |
Low-power primary distribution |
Star primary, Delta Secondary |
Step down transformer |
Delta primary, Star secondary |
Step-up transformer |
Star primary, Star secondary |
Small high-voltage transformers |
Mistake points
The secondary side connection also offers a reliable neutral point for loads in the secondary distribution network, making the delta-star connection the most cost-effective for step-up applications (transmission side). Both step-down (distribution side, low voltage) and step-up (transmission side, high voltage) applications are common in which the connector is used.
Summary:
The type of connection generally used at the beginning of high tension transmission line is – (a) delta-delta (b) Start-star (c) star-delta (d) delta-star
The delta-star connection type is typically utilized at the start of a high-tension transmission line. This is done by utilizing a step-up transformer. The beginning of the high-tension transmission line’s primary side has low voltage, whereas the secondary side has high voltage.