# GIS gas-density warning interface

Canonical URL: https://eloragrid.ai/symbols/gis-gas-density-warning-interface
Publisher: Elora Grid
Updated: 2026-11-03
Lookup label: GGWI
Drawing use: Schematic
Reference families: Manufacturer

Representation: Functional block
Installation focus: switchyards
Input: Gas-density monitor warning
Output: Compartment warning indication

Receives the selected compartment monitor's defined early gas-density warning output.

## In plain English

### What this block does

Receives the selected compartment monitor's defined early gas-density warning output.

### A simple example

In a switchyard marshalling kiosk, gas compartment, operating mechanism and cabinet-service indications are collected for the station controller. Their equipment tags identify the actual compartment or mechanism being monitored. For this reference, the drawing identifies “Gas-density monitor warning” at the input and “Compartment warning indication” at the output. Density and pressure require their proper temperature relationship.

### What the drawings help you do

Start at the named input: Gas-density monitor warning. Identify its source device or document and the state represented on the drawing. Follow the named output: Compartment warning indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.

### Terms

- Input: Gas-density monitor warning
- Output: Compartment warning indication
- Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Concept diagram: Gas-density monitor warning → GGWI → Compartment warning indication
A reading guide. The entry's original illustration and input/output facts describe this application.

- [Modular switchgear monitoring](https://www.hitachienergy.com/in/en/products-and-solutions/high-voltage-switchgear-and-breakers/monitoring-and-controlled-switching/modular-switchgear-monitoring-msm)


## What it represents

Receives the selected compartment monitor's defined early gas-density warning output. Yard equipment supervision carries the condition and support-system information of primary equipment into station alarms. A monitor's declared alarm, measurement and self-fault output need separate point names.
In a switchyard marshalling kiosk, gas compartment, operating mechanism and cabinet-service indications are collected for the station controller. Their equipment tags identify the actual compartment or mechanism being monitored. For this reference, the drawing identifies “Gas-density monitor warning” at the input and “Compartment warning indication” at the output. Density and pressure require their proper temperature relationship.
Keep primary-device identity, compartment boundaries and monitor health visible. A monitoring illustration does not establish a leak rate, operating threshold or remaining equipment life. 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: Gas-density monitor warning. Identify its source device or document and the state represented on the drawing.
- Follow the named output: Compartment warning indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- Density and pressure require their proper temperature relationship.
- Keep primary-device identity, compartment boundaries and monitor health visible. A monitoring illustration does not establish a leak rate, operating threshold or remaining equipment life.

## Information to show or reference

- Label the source and connection reference for gas-density monitor warning.
- Identify the destination and defined state of compartment warning indication.
- Record the equipment or control-document revision supporting this functional block.
- Check this application limit in the project design: Density and pressure require their proper temperature relationship.

## Important distinction

Density and pressure require their proper temperature relationship. 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: Gas-density monitor warning
- Output / connection: Compartment warning indication
- Lookup label: GGWI is a library lookup label, not a standard device designation.

## Public references

- [Modular switchgear monitoring](https://www.hitachienergy.com/in/en/products-and-solutions/high-voltage-switchgear-and-breakers/monitoring-and-controlled-switching/modular-switchgear-monitoring-msm) — Hitachi Energy. Public technical context for switchyard equipment condition interfaces. Gas, operating mechanism and circuit-breaker condition monitoring. 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.