HSW1S90
Phase-to-phase voltmeter selector
This representation identifies selection among phase-to-phase voltage measurement connections.
IEC
IEEE / ANSI · HSW1S90
ANSI/IEEE Phase-to-phase voltmeter selector form
IEEE-library form of phase-to-phase voltmeter selector: this representation identifies selection among phase-to-phase voltage measurement connections.
In plain English
What does ANSI/IEEE Phase-to-phase voltmeter selector form mean?
This reference locates phase-to-phase voltmeter selector in Autodesk's IEEE-oriented miscellaneous switches family. This representation identifies selection among phase-to-phase voltage measurement connections. The selector connects the meter to the documented line-to-line measurement pairs at its operating positions. It is a measurement interface, not the power switching device of the three-phase circuit. The public library uses HSW1S90 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
Provide the actual contact programme and measurement position labels. Identify any instrument-transformer secondary circuits that feed the selector. Document the selector position table and the meter connection. A measurement selector must not be mistaken for a three-phase power isolator. 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 phase-to-phase voltmeter selector: this representation identifies selection among phase-to-phase voltage measurement connections. A measurement selector must not be mistaken for a three-phase power isolator.
- Winding
- A coil of conductor inside an electrical machine or transformer.
- Normally open / normally closed
- The contact state in the normal condition defined for the drawing.
- Phase
- One of the related AC waveforms in a power system.
Read the source: Autodesk IEEE Symbol Preview — Miscellaneous Switches
IEEE / ANSI · 3 Voltage Phase Switch
Autodesk IEEE Symbol Preview: Miscellaneous Switches, block HSW1S90. 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 · HSW1S90
What it represents
This reference locates phase-to-phase voltmeter selector in Autodesk's IEEE-oriented miscellaneous switches family. This representation identifies selection among phase-to-phase voltage measurement connections. The selector connects the meter to the documented line-to-line measurement pairs at its operating positions. It is a measurement interface, not the power switching device of the three-phase circuit. The public library uses HSW1S90 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.
Provide the actual contact programme and measurement position labels. Identify any instrument-transformer secondary circuits that feed the selector. Document the selector position table and the meter connection. A measurement selector must not be mistaken for a three-phase power isolator. 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
- Document the selector position table and the meter connection.
- A measurement selector must not be mistaken for a three-phase power isolator.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Document the selector position table and the meter connection.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
A measurement selector must not be mistaken for a three-phase power isolator.
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 HSW1S90 as 3 Voltage Phase Switch. 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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