High-voltage transmission pylons against a dusk sky

Solutions by sector

Critical Infrastructure & OT Security

Protect power grids, transport and industrial control systems with data diodes, galvanically isolated fiber links and hardened communication hardware – trusted by Svenska Kraftnät, ABB and Alstom.

Environments
15
Architecture patterns
10
Products used
36

Cyberattacks against critical infrastructure are among the greatest threats to modern society. Operational technology – power grids, railways, water treatment, industrial control systems – needs protection that software alone cannot provide.

Hardware-enforced security for OT environments

  • Data diodes guarantee one-way data flow out of protected control networks: process data reaches the office network, but nothing can travel back in. The security is physical, not configurable – and therefore not attackable.
  • Fiber optic converters and extenders provide galvanic isolation, immunity to electromagnetic interference and interception-proof links across substations and plants, including G.703, IEEE C37.94 and E1 interfaces for teleprotection.
  • Rugged products are built for harsh industrial and field environments.

Our equipment is installed at operators such as Svenska Kraftnät, ABB, Alstom, Bombardier, General Electric and Schneider Electric.

Environments

Used in these environments

15 real installations, filterable by area

Showing all 15 environments

In the catalogue

Most specified for this sector

The products that recur most often in the environments above.

Standard

Data Diode Secure 1 Gbit SM

Data rate
1 Gbps
Wavelength
Singlemode 1310 nm
Input, LC
1000 BaseLX

Product no 60-00-8362

Standard

Rack 19" 3 HU 16 Slots SNMP

Fibersystem’s new enterprise-class 50-502 Rack System is designed to provide a flexible manageable system for…

Product no 60-00-6918

Standard

Fiber Optical Converter G.703 Codir – IEEE C37.94 MM

The 21-216 Fiber Optic G.703 Codirectional – IEEE C37.94 Converter is an electro-optical interface converter…

Product no 60-00-7164 (21-216)

Standard

Ethernet Fiber Optical Dual Converter 100 Mbit

Secure rack-mounted module featuring two fully independent channels, specifically designed to prevent…

Product no 60-00-7423

How it is built

Architecture patterns

Pattern FO-A · Teleprotection between two substationsThe optical budget and the delay budget are calculated together, because the link is part of the protection.

The link is part of the protection, not a service to it. Delay and symmetry decide.Substation ASubstation BProtection relayC37.94 converterC37.94 converterProtection relaydark fiber,symmetrical pathasymmetry becomesphase error, not analarm
The link is part of the protection, not a service to it. Delay and symmetry decide.Substation ASubstation BProtection relayC37.94 converterC37.94 converterProtection relaydark fiber, symmetricalpathasymmetrybecomes phaseerror, not analarm
  • Data path
  • Path that does not exist
The link is part of the protection, not a service to it. Delay and symmetry decide.
  1. FO-ATeleprotection between two substationsThe optical budget and the delay budget are calculated together, because the link is part of the protection.
  2. FO-CGalvanic barrier and cross-connect inside the siteWhere the isolation boundary sits is a design decision, not an installation detail.
  3. FO-EOne-way release from OT, with a controlled returnOut is the default. Anything coming back is a separate link with its own approval.
  4. DD-ABackup over a data diodeSizing against the backup window, the role of the middleware, and why restoring is the hard direction.
  5. KV-AShared workstation with physical KVM switchingFour properties separate a secure KVM from an ordinary one: EDID emulation, one-way HID, no shared buffer, tamper indication.

Critical Infrastructure & OT Security

Your sector not listed?

The threat model matters more than the label. Describe your environment and we match it with certified hardware – or build what is missing.

Verified credentials

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