# ANSI/IEEE single-phase AC-DC current converter symbol

Canonical URL: https://eloragrid.ai/symbols/ansi-single-phase-ac-to-dc-current-converter
Publisher: Elora Grid
Updated: 2026-10-28
Lookup label: I~/I=
Drawing use: Schematic
Reference families: IEEE / ANSI, Manufacturer

## Symbol convention

Convention: IEEE / ANSI
Form: Autodesk IEEE-oriented Instrumentation and Sensors form: AC-DC Current Converter Single Phase
Autodesk publishes this block under its IEEE Symbol Preview. The counterpart is the matching functional concept in the library; no equivalence of every detailed standard graphic is asserted.
Related representation: [Single-phase AC-to-DC current converter](https://eloragrid.ai/symbols/iec-single-phase-ac-to-dc-current-converter)

IEEE-library current converter form that turns an AC measuring current into a scaled DC signal for remote indication.

## In plain English

### What does ANSI/IEEE single-phase AC-DC current converter mean?

This converter takes an AC current, usually from a CT secondary, and produces a DC signal proportional to it for a PLC, SCADA input or remote meter. It sits in series with the CT circuit, so the CT secondary must remain closed through the converter input or a shorting link while it is removed.

### A simple example

The form does not state whether the output is average-responding or true RMS, the output range or the response time. Distorted currents from drives and rectifiers can be read quite differently by different converter types.

### What the drawings help you do

Treat the input as part of the CT secondary loop. Check whether the converter is true RMS when harmonics are present. A current converter outputs a signal for other equipment; an ammeter displays the current itself.

### This particular reference

IEEE-library current converter form that turns an AC measuring current into a scaled DC signal for remote indication. A current converter outputs a signal for other equipment; an ammeter displays the current itself.

### Terms

- DC: Direct current: electricity flowing in one direction.
- AC: Alternating current: electricity whose direction changes periodically.
- Phase: One of the related AC waveforms in a power system.

Concept diagram: Identify the device and form → Read the connections and state → Check 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.

- [Autodesk IEEE Symbol Preview — Instrumentation and Sensors](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm)
- [IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams](https://standards.ieee.org/ieee/315/515/)


## What it represents

This converter takes an AC current, usually from a CT secondary, and produces a DC signal proportional to it for a PLC, SCADA input or remote meter. It sits in series with the CT circuit, so the CT secondary must remain closed through the converter input or a shorting link while it is removed.
The form does not state whether the output is average-responding or true RMS, the output range or the response time. Distorted currents from drives and rectifiers can be read quite differently by different converter types.

## How to read it

- Treat the input as part of the CT secondary loop.
- Check whether the converter is true RMS when harmonics are present.

## Information to show or reference

- Show CT ratio feeding the input
- State output signal range
- Provide CT shorting provision

## Important distinction

A current converter outputs a signal for other equipment; an ammeter displays the current itself.

## Facts

- Convention evidence: Autodesk IEEE Symbol Preview, Instrumentation and Sensors
- Public vendor block name: HIN1G1 / VIN1G1 (Autodesk identifier; not an IEEE symbol number)
- Input: AC current, usually from a CT secondary
- Artwork scope: Original functional illustration; exact standard glyph and compliance are not certified

## Public references

- [Autodesk IEEE Symbol Preview — Instrumentation and Sensors](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm) — Autodesk. Public IEEE-oriented Instrumentation and Sensors preview listing the AC-DC Current Converter Single Phase block and its vendor identifier.
- [IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams](https://standards.ieee.org/ieee/315/515/) — IEEE Standards Association. Graphic-symbol standards context and official status; not a source of reproduced artwork.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.