HSW1S94
Three-point current measurement selector
This representation identifies selection among three current-measurement points.
IEC
IEEE / ANSI · HSW1S94
ANSI/IEEE Three-point current measurement selector form
IEEE-library form of three-point current measurement selector: this representation identifies selection among three current-measurement points.
In plain English
What does ANSI/IEEE Three-point current measurement selector form mean?
This reference locates three-point current measurement selector in Autodesk's IEEE-oriented miscellaneous switches family. This representation identifies selection among three current-measurement points. The meter is connected to one of three documented current-measurement circuits. When CT secondaries are involved, the selected switch arrangement must be considered with their continuity and test provisions. The public library uses HSW1S94 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
A simple example
Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.
What the drawings help you do
Document the exact terminal and switching scheme from the selected equipment. The concept is an interpretation reference rather than a field switching or testing procedure. Coordinate CT secondary handling and the selected meter-switch connection scheme. A current selector cannot be treated as an ordinary voltage selector because CT circuits require documented continuity arrangements. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
This particular reference
IEEE-library form of three-point current measurement selector: this representation identifies selection among three current-measurement points. A current selector cannot be treated as an ordinary voltage selector because CT circuits require documented continuity arrangements.
- Normally open / normally closed
- The contact state in the normal condition defined for the drawing.
- Terminal
- An identified point where a conductor connects.
- Signal
- Electrical information passed between devices, rather than necessarily the main power supply.
Read the source: Autodesk IEEE Symbol Preview — Miscellaneous Switches
IEEE / ANSI · Current Switch For 3 Measurement Points
Autodesk IEEE Symbol Preview: Miscellaneous Switches, block HSW1S94. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · HSW1S94
What it represents
This reference locates three-point current measurement selector in Autodesk's IEEE-oriented miscellaneous switches family. This representation identifies selection among three current-measurement points. The meter is connected to one of three documented current-measurement circuits. When CT secondaries are involved, the selected switch arrangement must be considered with their continuity and test provisions. The public library uses HSW1S94 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.
Document the exact terminal and switching scheme from the selected equipment. The concept is an interpretation reference rather than a field switching or testing procedure. Coordinate CT secondary handling and the selected meter-switch connection scheme. A current selector cannot be treated as an ordinary voltage selector because CT circuits require documented continuity arrangements. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
How to read it
- Coordinate CT secondary handling and the selected meter-switch connection scheme.
- A current selector cannot be treated as an ordinary voltage selector because CT circuits require documented continuity arrangements.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Coordinate CT secondary handling and the selected meter-switch connection scheme.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
A current selector cannot be treated as an ordinary voltage selector because CT circuits require documented continuity arrangements.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEEE Symbol Preview — Miscellaneous Switches
Public IEEE-oriented Miscellaneous Switches table explicitly lists HSW1S94 as Current Switch For 3 Measurement Points. This supports the vendor convention context, not reproduction of the publisher graphic.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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