GA
Panel service outlet
A panel service outlet provides the specified auxiliary socket interface.
General arrangement objects
Functional block · PSAF
Protection-panel service AC feeder
Functional block · Switchrooms
An independently authored application reference. The drawing shows the named function or circuit relationship; use the project legend and selected equipment documentation for its drafting form and connections.
Browse this installation focusIn plain English
What this block does
Shows the auxiliary AC circuit allocated to protection-panel service functions.
A simple example
In a switchroom, the lighting, service sockets, charger input and room cooling may be fed from different auxiliary branches. A source change must preserve the identities of loads that require continuity. For this reference, the drawing identifies “Auxiliary AC board” at the input and “Panel service AC” at the output. Service power differs from protective-relay operating power.
What the drawings help you do
Start at the named input: Auxiliary AC board. Identify its source device or document and the state represented on the drawing. Follow the named output: Panel service AC. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- Input
- Auxiliary AC board
- Output
- Panel service AC
- Application reference
- An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.
Read the source: SEL-RPM redundant power module
Schematic · PSAF
What it represents
Shows the auxiliary AC circuit allocated to protection-panel service functions. An auxiliary AC distribution diagram identifies the supplies serving room services and control-support equipment. Essential, backed-up and ordinary circuits can have different source paths and operating priorities.
In a switchroom, the lighting, service sockets, charger input and room cooling may be fed from different auxiliary branches. A source change must preserve the identities of loads that require continuity. For this reference, the drawing identifies “Auxiliary AC board” at the input and “Panel service AC” at the output. Service power differs from protective-relay operating power.
Label source, branch protection and load purpose. The arrangement does not establish conductor sizes, protection settings or installation compliance; it links the operating role to the selected equipment schedule. 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: Auxiliary AC board. Identify its source device or document and the state represented on the drawing.
- Follow the named output: Panel service AC. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- Service power differs from protective-relay operating power.
- Label source, branch protection and load purpose. The arrangement does not establish conductor sizes, protection settings or installation compliance; it links the operating role to the selected equipment schedule.
Information to show or reference
- Label the source and connection reference for auxiliary ac board.
- Identify the destination and defined state of panel service ac.
- Record the equipment or control-document revision supporting this functional block.
- Check this application limit in the project design: Service power differs from protective-relay operating power.
A distinction that matters
Service power differs from protective-relay operating power. 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.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
SEL-RPM redundant power module
Public technical context for switchroom auxiliary ac distribution. Independent AC and DC sources for station auxiliary power. The application text and educational graphic are independently authored; the publisher does not certify this representation.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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