# Outdoor post-insulator support reference

Canonical URL: https://eloragrid.ai/symbols/outdoor-post-insulator-support-reference
Publisher: Elora Grid
Updated: 2026-11-03
Lookup label: OPSR
Drawing use: Schematic
Reference families: Manufacturer

Representation: Functional block
Installation focus: switchyards
Input: Supported primary conductor
Output: Insulated mechanical support

Identifies a primary conductor's insulating support function in the assigned yard arrangement.

## In plain English

### What this block does

Identifies a primary conductor's insulating support function in the assigned yard arrangement.

### A simple example

In a switchyard equipment diagram, the primary reference identifies the electrical role of an installed component while the linked equipment schedule and manufacturer drawing supply its exact construction and dimensions. For this reference, the drawing identifies “Supported primary conductor” at the input and “Insulated mechanical support” at the output. A support does not create an electrical interruption.

### What the drawings help you do

Start at the named input: Supported primary conductor. Identify its source device or document and the state represented on the drawing. Follow the named output: Insulated mechanical support. Cross-reference its destination and separate the command from confirmation that the equipment responded.

### Terms

- Input: Supported primary conductor
- Output: Insulated mechanical support
- Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Concept diagram: Supported primary conductor → OPSR → Insulated mechanical support
A reading guide. The entry's original illustration and input/output facts describe this application.

- [Gas-insulated switchgear](https://www.hitachienergy.com/products-and-solutions/high-voltage-switchgear-and-breakers/gas-insulated-switchgear)


## What it represents

Identifies a primary conductor's insulating support function in the assigned yard arrangement. High-voltage primary equipment carries, interrupts, measures or conditions the main power circuit. Its function, insulation arrangement and equipment boundaries need to be distinguished from the secondary signals used to control it.
In a switchyard equipment diagram, the primary reference identifies the electrical role of an installed component while the linked equipment schedule and manufacturer drawing supply its exact construction and dimensions. For this reference, the drawing identifies “Supported primary conductor” at the input and “Insulated mechanical support” at the output. A support does not create an electrical interruption.
Read the connected power path before interpreting a secondary output or alarm. These original educational component references provide no product dimensions, dielectric rating, installation clearance or construction approval. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation.

## How to read it

- Start at the named input: Supported primary conductor. Identify its source device or document and the state represented on the drawing.
- Follow the named output: Insulated mechanical support. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- A support does not create an electrical interruption.
- Read the connected power path before interpreting a secondary output or alarm. These original educational component references provide no product dimensions, dielectric rating, installation clearance or construction approval.

## Information to show or reference

- Label the source and connection reference for supported primary conductor.
- Identify the destination and defined state of insulated mechanical support.
- Record the equipment or control-document revision supporting this functional block.
- Check this application limit in the project design: A support does not create an electrical interruption.

## Important distinction

A support does not create an electrical interruption. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram.

## Facts

- Representation: Functional block
- Installation focus: Switchyards
- Input / boundary: Supported primary conductor
- Output / connection: Insulated mechanical support
- Lookup label: OPSR is a library lookup label, not a standard device designation.

## Public references

- [Gas-insulated switchgear](https://www.hitachienergy.com/products-and-solutions/high-voltage-switchgear-and-breakers/gas-insulated-switchgear) — Hitachi Energy. Public technical context for high-voltage primary equipment references. Primary switching equipment and instrument-transformer interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation.

## 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.