Public and private sector
Power plant with high electromagnetic interference
Immunity is the requirement, and it is the one figure the datasheet is expected to answer without discussion.
- Area
- Fiber & OT
- Architecture patterns
- 1
- Products used
- 2
The problem
What makes it hard
Generator protection, excitation equipment, static frequency converters and start-up and synchronisation equipment produce an interference environment worse than ordinary switchgear, with the difference that the equipment sits close together. Here it is not enough for fiber to run between buildings — it is needed between cabinets in the same room.
Short distance, high interference. That means the optical budget is not the constraint; the routing is. A 30 m multimode link has 29 dB of margin and can still fail because of a fiber pinched in a cabinet penetration.
How it is built
A C37.94 island inside an E1 or SDH network
Where the clock master sits, and what happens to the protection when it disappears.
See the full patternIn the catalogue
Equipment from the catalogue
Built from: Fiber Optical Converter G.703 Codir – IEEE C37.94 MM 60-00-7164 (21-216) and Fiber Optical Delay Unit IEEE C37.94 60-00-6763.
Reading and references
Explained in
Named customer references are not published. What we can show is the solution area this environment belongs to, and the reasoning behind the design.
Environments
Environments with the same problem
The technology is the same; the buying process usually is not.
- Substation with teleprotectionDelay and channel asymmetry decide whether the protection trips correctly — the link is part of the protection scheme, not a service to it.
- Wind farmLong loops and lightning exposure, with maintenance access measured in hours of travel.
- Switching station with SCADA releaseMeasurements must leave the station without opening a way back in.
- Railway signalling installationVibration and a 40-year installation lifetime set the requirements, not the data rate.
Next step
Describe your environment
If yours is close to this one but not the same, that difference is usually where the design decisions are. Tell us what it looks like.
Verified credentials
All certifications- ISO 9001 14001ISO certifiedQuality & environmentDownload certificate (JPG)
- Made in SwedenDesigned & built in StockholmSecure supply chain
- NATOCertified TEMPEST supplierSDIP-27 · Level A & B
- Swedish Armed ForcesM-numbered equipmentMain supplier, Total Defence
- Government of SwedenSupplier to Swedish authoritiesPolice · FMV · FOI
- SOFFDefence industry memberExport control frameworks
