Functional block · DCI

Discharge-coil capacitor-bank interface

Functional block · Switchyards

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.

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In plain English

What this block does

Identifies the documented discharge or measurement connection associated with the selected capacitor bank.

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 “Capacitor-bank terminals” at the input and “Assigned discharge-coil connection” at the output. The reference does not establish a safe discharge time.

Capacitor-bank terminalsDCIAssigned discharge-coilconnection
A reading guide. The entry's original illustration and input/output facts describe this application.

What the drawings help you do

Start at the named input: Capacitor-bank terminals. Identify its source device or document and the state represented on the drawing. Follow the named output: Assigned discharge-coil connection. Cross-reference its destination and separate the command from confirmation that the equipment responded.

Input
Capacitor-bank terminals
Output
Assigned discharge-coil connection
Application reference
An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Read the source: Gas-insulated switchgear

Schematic · DCIDischarge-coil capacitor-bank interface: original educational illustration
Original educational illustrationSee source and graphic notes

What it represents

Identifies the documented discharge or measurement connection associated with the selected capacitor bank. 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 “Capacitor-bank terminals” at the input and “Assigned discharge-coil connection” at the output. The reference does not establish a safe discharge time.

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: Capacitor-bank terminals. Identify its source device or document and the state represented on the drawing.
  • Follow the named output: Assigned discharge-coil connection. Cross-reference its destination and separate the command from confirmation that the equipment responded.
  • The reference does not establish a safe discharge time.
  • 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 capacitor-bank terminals.
  • Identify the destination and defined state of assigned discharge-coil connection.
  • Record the equipment or control-document revision supporting this functional block.
  • Check this application limit in the project design: The reference does not establish a safe discharge time.

A distinction that matters

The reference does not establish a safe discharge time. 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.

Gas-insulated switchgear

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.

Hitachi Energy · Public reference checked 3 November 2026 · Link only

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.

Entry JSON · Entry Markdown · Last editorial update: 3 November 2026

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