# Photovoltaic arc-fault detection

Canonical URL: https://eloragrid.ai/symbols/photovoltaic-arc-fault-detector
Publisher: Elora Grid
Updated: 2026-10-27
Lookup label: PV AFD
Drawing use: Schematic
Reference families: Manufacturer

Solar arc-fault detection analyses monitored circuit behaviour for signs of specified electrical arcing.

## In plain English

### What does Photovoltaic arc-fault detection mean?

Solar arc-fault detection analyses monitored circuit behaviour for signs of specified electrical arcing.

### A simple example

A detector can provide a result to the associated shutdown or protection logic.

### What the drawings help you do

Show the monitored solar circuit, sensing path and detection output as separate roles. Arcing can produce features that a detector analyses, but the detector’s indication is not the same thing as opening the circuit. Identify the equipment that responds to the detection decision.

### Before using this reference

- Identify the circuit and sensing arrangement being monitored.
- Show the detector’s alarm or control output.
- Reference the selected interruption arrangement and detector limitations.

### Does the detector block show how the fault is interrupted?

Only if the selected design explicitly includes and identifies that action. Detection, decision logic and power interruption can occur in different components and should be traced separately on the drawing.

### Terms

- Arc: A conducting electrical discharge through a gap.
- Detection output: A signal reporting the detector’s assessment to another part of the system.

Concept diagram: Monitored circuit behaviour → Arc-detection analysis → Indication or interruption request
Original functional explanation. Arrows show information or energy roles; two-headed arrows identify two-way interfaces. This is not a pinout, certified standards graphic or complete circuit.

- [Solar arc protection architecture](https://www.ti.com/solution/solar-arc-protection)


## What it represents

Solar arc-fault detection analyses monitored circuit behaviour for signs of specified electrical arcing.
A detector can provide a result to the associated shutdown or protection logic.
Show the monitored solar circuit, sensing path and detection output as separate roles. Arcing can produce features that a detector analyses, but the detector’s indication is not the same thing as opening the circuit. Identify the equipment that responds to the detection decision. This is original functional artwork, not a certified standard graphic or device pinout.

## How to read it

- Identify the circuit and sensing arrangement being monitored.
- Show the detector’s alarm or control output.
- Reference the selected interruption arrangement and detector limitations.
- Detection, decision logic and power interruption must be distinguished in the design.

## Information to show or reference

- Identify the circuit and sensing arrangement being monitored.
- Show the detector’s alarm or control output.
- Reference the selected interruption arrangement and detector limitations.

## Important distinction

Detection, decision logic and power interruption must be distinguished in the design.

## Facts

- Representation type: Original functional block; not a certified IEC or IEEE graphic
- Concept input: Monitored circuit behaviour
- Concept output: Indication or interruption request

## Public references

- [Solar arc protection architecture](https://www.ti.com/solution/solar-arc-protection) — Texas Instruments. Solar arc protection architecture: public technical context for the named function. Product and compliance details remain with the publisher.

## 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.