HMO14
Three-phase motor with four connections
This representation distinguishes the publisher's three-phase motor form with four indicated connections.
IEC
IEEE / ANSI · HMO14
ANSI/IEEE Three-phase motor with four connections form
IEEE-library form of three-phase motor with four connections: this representation distinguishes the publisher's three-phase motor form with four indicated connections.
In plain English
What does ANSI/IEEE Three-phase motor with four connections form mean?
This reference locates three-phase motor with four connections in Autodesk's IEEE-oriented 3 phase motors family. This representation distinguishes the publisher's three-phase motor form with four indicated connections. The public library uses HMO14 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
A simple example
Trace each winding, supply and accessible neutral through the complete machine or transformer connection diagram. Keep the phase arrangement, terminal labels and any clock notation attached to the device; neither the convention label nor this educational outline supplies its ratings.
What the drawings help you do
Verify the purpose of the fourth connection against the selected motor terminal diagram. Do not assume the additional connection is a protective-earth terminal without the equipment documentation. Verify the purpose of the fourth connection against the selected motor terminal diagram. Do not assume the additional connection is a protective-earth terminal without the equipment documentation. 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-phase motor with four connections: this representation distinguishes the publisher's three-phase motor form with four indicated connections. Do not assume the additional connection is a protective-earth terminal without the equipment documentation.
- Winding
- A coil of conductor inside an electrical machine or transformer.
- Phase
- One of the related AC waveforms in a power system.
- Terminal
- An identified point where a conductor connects.
Read the source: Autodesk IEEE Symbol Preview — 3 Phase Motors
IEEE / ANSI · 3 Phase Motor (4 Connections)
Autodesk IEEE Symbol Preview: 3 Phase Motors, block HMO14. 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.
SLD / Schematic · HMO14
What it represents
This reference locates three-phase motor with four connections in Autodesk's IEEE-oriented 3 phase motors family. This representation distinguishes the publisher's three-phase motor form with four indicated connections. The public library uses HMO14 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Trace each winding, supply and accessible neutral through the complete machine or transformer connection diagram. Keep the phase arrangement, terminal labels and any clock notation attached to the device; neither the convention label nor this educational outline supplies its ratings.
Verify the purpose of the fourth connection against the selected motor terminal diagram. Do not assume the additional connection is a protective-earth terminal without the equipment documentation. Verify the purpose of the fourth connection against the selected motor terminal diagram. Do not assume the additional connection is a protective-earth terminal without the equipment documentation. 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
- Verify the purpose of the fourth connection against the selected motor terminal diagram.
- Do not assume the additional connection is a protective-earth terminal without the equipment documentation.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Verify the purpose of the fourth connection against the selected motor terminal diagram.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
Do not assume the additional connection is a protective-earth terminal without the equipment documentation.
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 — 3 Phase Motors
Public IEEE-oriented 3 Phase Motors table explicitly lists HMO14 as 3 Phase Motor (4 Connections). 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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