# Microgrid failed-load-shed escalation

Canonical URL: https://eloragrid.ai/symbols/microgrid-failed-load-shed-escalation
Publisher: Elora Grid
Updated: 2026-11-03
Lookup label: MFE
Drawing use: Schematic
Reference families: Manufacturer

Representation: Functional block
Installation focus: microgrids
Input: Failed shedding feedback
Output: Fallback shedding request

Requests the documented fallback action when the assigned load disconnection is not confirmed.

## In plain English

### What this block does

Requests the documented fallback action when the assigned load disconnection is not confirmed.

### A simple example

In a microgrid island, the controller can disconnect lower-priority loads when a source is lost and later request restoration when the documented reserve and stability conditions permit it. For this reference, the drawing identifies “Failed shedding feedback” at the input and “Fallback shedding request” at the output. Escalation scope must be defined.

### What the drawings help you do

Start at the named input: Failed shedding feedback. Identify its source device or document and the state represented on the drawing. Follow the named output: Fallback shedding request. Cross-reference its destination and separate the command from confirmation that the equipment responded.

### Terms

- Input: Failed shedding feedback
- Output: Fallback shedding request
- Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Concept diagram: Failed shedding feedback → MFE → Fallback shedding request
A reading guide. The entry's original illustration and input/output facts describe this application.

- [Avista Shared Energy Economy microgrid protection and control case study](https://selinc.com/api/download/135486/)


## What it represents

Requests the documented fallback action when the assigned load disconnection is not confirmed. Load management balances the available electrical supply against the loads that remain connected. Shedding, restoration, priority and proof of disconnection are separate control functions and should remain traceable to individual load groups.
In a microgrid island, the controller can disconnect lower-priority loads when a source is lost and later request restoration when the documented reserve and stability conditions permit it. For this reference, the drawing identifies “Failed shedding feedback” at the input and “Fallback shedding request” at the output. Escalation scope must be defined.
Identify each load group, priority, measured contribution and feedback. Shedding amounts, operating times and restoration conditions require the approved power-management design and the actual connected-load data. 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: Failed shedding feedback. Identify its source device or document and the state represented on the drawing.
- Follow the named output: Fallback shedding request. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- Escalation scope must be defined.
- Identify each load group, priority, measured contribution and feedback. Shedding amounts, operating times and restoration conditions require the approved power-management design and the actual connected-load data.

## Information to show or reference

- Label the source and connection reference for failed shedding feedback.
- Identify the destination and defined state of fallback shedding request.
- Record the equipment or control-document revision supporting this functional block.
- Check this application limit in the project design: Escalation scope must be defined.

## Important distinction

Escalation scope must be defined. 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: Microgrids
- Input / boundary: Failed shedding feedback
- Output / connection: Fallback shedding request
- Lookup label: MFE is a library lookup label, not a standard device designation.

## Public references

- [Avista Shared Energy Economy microgrid protection and control case study](https://selinc.com/api/download/135486/) — SEL. Public technical context for microgrid load shedding and restoration. Storage, protection, black start, load restoration and coordinated island operation. 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.