# Breaker simulator input interface Canonical URL: https://eloragrid.ai/symbols/breaker-simulator-input-interface Publisher: Elora Grid Updated: 2026-11-03 Lookup label: BSII Drawing use: Schematic Reference families: Manufacturer Representation: Functional block Installation focus: switchgear Input: Simulator position signals Output: Controller feedback inputs Substitutes documented simulated breaker feedback for the selected controller test inputs. ## In plain English ### What this block does Substitutes documented simulated breaker feedback for the selected controller test inputs. ### A simple example In a switchgear relay panel, test links can separate a protective relay from the trip coils while maintaining the specified current-transformer secondary arrangement. For this reference, the drawing identifies “Simulator position signals” at the input and “Controller feedback inputs” at the output. Simulation must remain distinguishable from field feedback. ### What the drawings help you do Start at the named input: Simulator position signals. Identify its source device or document and the state represented on the drawing. Follow the named output: Controller feedback inputs. Cross-reference its destination and separate the command from confirmation that the equipment responded. ### Terms - Input: Simulator position signals - Output: Controller feedback inputs - Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections. Concept diagram: Simulator position signals → BSII → Controller feedback inputs A reading guide. The entry's original illustration and input/output facts describe this application. - [Masterclad medium-voltage switchgear: circuit-breaker section interlocks](https://productinfo.se.com/masterclad_mv_switchgear_ib/6055-30-masterclad-15kv-mv-switchgear-ib/English/6055-30%20Masterclad%20MV%20Switchgear%20Indoor%20%28bookmap%29_DD00646805.xml/%24/Section6-CircuitBreakerSectionInter-58DD6EC7) ## What it represents Substitutes documented simulated breaker feedback for the selected controller test inputs. A test interface separates measurement, command and indication paths so their behavior can be checked in the documented test configuration. The test boundary must show which real equipment outputs remain enabled. In a switchgear relay panel, test links can separate a protective relay from the trip coils while maintaining the specified current-transformer secondary arrangement. For this reference, the drawing identifies “Simulator position signals” at the input and “Controller feedback inputs” at the output. Simulation must remain distinguishable from field feedback. Trace the source and destination on each side of the test boundary. Use the selected test-device instructions for actual operations and never infer a safe current-transformer switching sequence from an educational diagram. 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: Simulator position signals. Identify its source device or document and the state represented on the drawing. - Follow the named output: Controller feedback inputs. Cross-reference its destination and separate the command from confirmation that the equipment responded. - Simulation must remain distinguishable from field feedback. - Trace the source and destination on each side of the test boundary. Use the selected test-device instructions for actual operations and never infer a safe current-transformer switching sequence from an educational diagram. ## Information to show or reference - Label the source and connection reference for simulator position signals. - Identify the destination and defined state of controller feedback inputs. - Record the equipment or control-document revision supporting this functional block. - Check this application limit in the project design: Simulation must remain distinguishable from field feedback. ## Important distinction Simulation must remain distinguishable from field feedback. 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: Switchgear - Input / boundary: Simulator position signals - Output / connection: Controller feedback inputs - Lookup label: BSII is a library lookup label, not a standard device designation. ## Public references - [Masterclad medium-voltage switchgear: circuit-breaker section interlocks](https://productinfo.se.com/masterclad_mv_switchgear_ib/6055-30-masterclad-15kv-mv-switchgear-ib/English/6055-30%20Masterclad%20MV%20Switchgear%20Indoor%20%28bookmap%29_DD00646805.xml/%24/Section6-CircuitBreakerSectionInter-58DD6EC7) — Schneider Electric. Public technical context for switchgear test and commissioning interfaces. Breaker control, mechanism, position contacts, racking interlocks and test interfaces. 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.