# Microgrid sheddable-load availability monitor

Canonical URL: https://eloragrid.ai/symbols/microgrid-sheddable-load-availability-monitor
Publisher: Elora Grid
Updated: 2026-11-03
Lookup label: MSAM
Drawing use: Schematic
Reference families: Manufacturer

Representation: Functional block
Installation focus: microgrids
Input: Load connection and control states
Output: Available shedding capacity

Tracks which assigned load groups are presently connected and available for controlled reduction.

## In plain English

### What this block does

Tracks which assigned load groups are presently connected and available for controlled reduction.

### 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 “Load connection and control states” at the input and “Available shedding capacity” at the output. Unavailable control paths reduce effective capacity.

### What the drawings help you do

Start at the named input: Load connection and control states. Identify its source device or document and the state represented on the drawing. Follow the named output: Available shedding capacity. Cross-reference its destination and separate the command from confirmation that the equipment responded.

### Terms

- Input: Load connection and control states
- Output: Available shedding capacity
- Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Concept diagram: Load connection and control states → MSAM → Available shedding capacity
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

Tracks which assigned load groups are presently connected and available for controlled reduction. 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 “Load connection and control states” at the input and “Available shedding capacity” at the output. Unavailable control paths reduce effective capacity.
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: Load connection and control states. Identify its source device or document and the state represented on the drawing.
- Follow the named output: Available shedding capacity. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- Unavailable control paths reduce effective capacity.
- 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 load connection and control states.
- Identify the destination and defined state of available shedding capacity.
- Record the equipment or control-document revision supporting this functional block.
- Check this application limit in the project design: Unavailable control paths reduce effective capacity.

## Important distinction

Unavailable control paths reduce effective capacity. 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: Load connection and control states
- Output / connection: Available shedding capacity
- Lookup label: MSAM 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.