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Single Line Diagram (SLD) With Interlocking 132kV Substation Complete Detail in Urdu/Hindi l ETC
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Single Line Diagram (SLD)
The single line diagram (SLD) is the most basic of the set of diagrams that are used to document the electrical functionality of the substation. Its emphasis is on communicating the functions of the power equipment and the associated protection and control system.
Details about connection and physical location are not as important unless they serve the purpose of communicating function. For example, the CT polarity marks indicate the direction of the current that a protective element is oriented to, thereby implying a function.
The challenging task behind the SLD is to include all the necessary data while keeping the diagram easy to read. Therefore, the single line may rely on non-intuitive symbology to represent devices since communicating function is so important.
Typically, single line or one line diagrams are used to document the configuration of the electrical high voltage circuit of a substation.
On these diagrams the three phase equipment and connections are single line, thus the basis for the diagram name. Single phase equipment may have the same symbol as a three phase device but will be specifically designated with the phase to which it is connected.
In some cases, a key or basic substation SLD will be used to show just the electrical configuration of the high voltage equipment in the substation.
Beyond the documentation of the high voltage equipment’s configuration, typically some of the control and protection systems. The most common additional system to be depicted on the SLDs are the current and voltage transformer circuits.
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#HowtoreadSinglelinediagram
#SLD
#SF6132kVSubtationDrawing
The single line diagram (SLD) is the most basic of the set of diagrams that are used to document the electrical functionality of the substation. Its emphasis is on communicating the functions of the power equipment and the associated protection and control system.
Details about connection and physical location are not as important unless they serve the purpose of communicating function. For example, the CT polarity marks indicate the direction of the current that a protective element is oriented to, thereby implying a function.
The challenging task behind the SLD is to include all the necessary data while keeping the diagram easy to read. Therefore, the single line may rely on non-intuitive symbology to represent devices since communicating function is so important.
Typically, single line or one line diagrams are used to document the configuration of the electrical high voltage circuit of a substation.
On these diagrams the three phase equipment and connections are single line, thus the basis for the diagram name. Single phase equipment may have the same symbol as a three phase device but will be specifically designated with the phase to which it is connected.
In some cases, a key or basic substation SLD will be used to show just the electrical configuration of the high voltage equipment in the substation.
Beyond the documentation of the high voltage equipment’s configuration, typically some of the control and protection systems. The most common additional system to be depicted on the SLDs are the current and voltage transformer circuits.
………………………………………………………………………………………
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………………………………………………………………………………………
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………………………………………………………………………………………
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………………………………………………………………………………………
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...................................................................................
#HowtoreadSinglelinediagram
#SLD
#SF6132kVSubtationDrawing
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