IEEE / ANSI · HIN1P33

ANSI/IEEE Minute-pulse clock contact form

IEEE-library form of minute-pulse clock contact: this representation identifies the publisher's normally-open clock contact that closes every minute.

In plain English

What does ANSI/IEEE Minute-pulse clock contact form mean?

This reference locates minute-pulse clock contact in Autodesk's IEEE-oriented instrumentation and sensors family. This representation identifies the publisher's normally-open clock contact that closes every minute. The public library uses HIN1P33 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.

A simple example

Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.

Identify the device and formRead the connections and stateCheck the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

What the drawings help you do

Document the pulse purpose and downstream circuit response. A periodic clock contact is distinct from an on-delay or off-delay timer. Document the pulse purpose and downstream circuit response. A periodic clock contact is distinct from an on-delay or off-delay timer. 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 minute-pulse clock contact: this representation identifies the publisher's normally-open clock contact that closes every minute. A periodic clock contact is distinct from an on-delay or off-delay timer.

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 — Instrumentation and Sensors

IEEE / ANSI · Normally Open Clock Closing Every Minute

Autodesk IEEE Symbol Preview: Instrumentation and Sensors, block HIN1P33. 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 · HIN1P33ANSI/IEEE Minute-pulse clock contact form: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

This reference locates minute-pulse clock contact in Autodesk's IEEE-oriented instrumentation and sensors family. This representation identifies the publisher's normally-open clock contact that closes every minute. The public library uses HIN1P33 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.

Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.

Document the pulse purpose and downstream circuit response. A periodic clock contact is distinct from an on-delay or off-delay timer. Document the pulse purpose and downstream circuit response. A periodic clock contact is distinct from an on-delay or off-delay timer. 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 pulse purpose and downstream circuit response.
  • A periodic clock contact is distinct from an on-delay or off-delay timer.

Information to show or reference

  • Identify the associated device, circuit or diagram boundary.
  • Document the pulse purpose and downstream circuit response.
  • Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

A distinction that matters

A periodic clock contact is distinct from an on-delay or off-delay timer.

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 — Instrumentation and Sensors

Public IEEE-oriented Instrumentation and Sensors table explicitly lists HIN1P33 as Normally Open Clock Closing Every Minute. This supports the vendor convention context, not reproduction of the publisher graphic.

Autodesk · Public reference checked 14 October 2026 · Link only

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.

Entry JSON · Entry Markdown · Last editorial update: 28 October 2026

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