Meaning of this power system line diagram symbol

Question

Please explain to me what this symbol means, in single line diagram?

Source of image: My project diagram.

Here is another example I found:

Here is a magnified part, showing the symbol:

Could you provide a bit more context - zooming out a bit to some of the surrounding schematic to give a better overview of what it might be indicating in the circuit — Tom Carpenter, Commented Mar 15 at 20:32
And say what country the drawing was made it. This may tell us which standard was used. — Transistor, Commented Mar 15 at 20:35
Sorry , really I would like to know in this kind if schematics, with relays. In this kind this IS known as block if tests, with signals and functions. I think It is used yo clase the circuito of the block if test, but I think It has a particular name — Daniel Prieto López, Commented Mar 15 at 20:43
@TomCarpenter. Tom could you se better now?? I would like to share yo you my original schematics with this kind if symbol but the image is yo heavy — Daniel Prieto López, Commented Mar 15 at 20:54

Colin · Accepted Answer · 2024-03-15 23:29:42Z

5

According to ANSI Y32.2/IEEE 315 standards, it's short circuit termination.

Source is aforementioned standards document.

answered Mar 15 at 23:29

Colin

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\$\begingroup\$ Thank you very much. I have posted another question, about the placement if a shortcircuit symbol or termination symbol in an valve , followed by the earth symbol. I don't understand this layout. The point is, if It is already the earth symbol, why It is necessary to put the termination or shortcircuit symbol? I post the image of the valve in this loop. \$\endgroup\$
– Daniel Prieto López
Commented Mar 16 at 6:31

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