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Siemens 7SJ82 - Application Example for Arc Protection with Point Sensors in Operating Mode: Light and Current; Description

Siemens 7SJ82
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The parameters in block General are not relevant since the Operating mode = light only.
Setting Notes for the Protection Device in the Infeed
The Arc protection function operates with 5 stages.
Set the parameters of the stages as follows:
Parameter: Operating mode = light only (applies to all stages)
Parameter: Sensor = point sensor (applies to all stages)
Parameter: External trip initiation = no (applies to all stages)
Parameter: Channel = Arc mod. 1 channel 1 (Stage 1) → Busbar compartment supervision in
feeder 1
Parameter: Channel = Arc mod. 1 channel 2 (Stage 2) → Circuit-breaker compartment supervision
in feeder 1
Parameter: Channel = Arc mod. 1 channel 3 (Stage 3) → Busbar compartment supervision in
feeder 2
Parameter: Channel = Arc mod. 2 channel 1 (Stage 4) → Circuit-breaker compartment supervision
in feeder 2
Parameter: Channel = Arc mod. 2 channel 2 (Stage 5) → Busbar compartment supervision in the
infeed
The parameters in block General are not relevant since the Operating mode = light only.
Application Example for Arc Protection with Point Sensors in Operating Mode:
Light and Current
Description
Overview
The example describes the Arc protection function in a medium-voltage switchgear with one infeed and 2
feeders. The Arc protection function operates with the Operating mode = current and light. In the
example, all arcs are detected by the protection device in the infeed.
The following items are considered in the example:
Positioning the optical point sensors in the switchgear
Connecting the optical point sensors to the protection devices in the feeders and the infeed
Number of necessary stages of the functions in the protection devices of the feeders and the infeed
Setting notes about selected parameters in the stages of the function
6.10.9
6.10.9.1
Protection and Automation Functions
6.10 Arc Protection
510 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017

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