For Electric Utilities

Optical current measurement solutions for high voltage power transmission utilities

H Nu's optical current measurement systems simplify your substation design, improve reliability and reduce cost.

  • H Nu's optical current measurement technology provides superior reliability, including hot-swap redundancy in critical components for the ultimate in network availability.
  • Using only a single mode optical fibre cable connection to the current sensor - with no electrical connection required - simplifies your substation design and reduces risk to substation personnel.
  • Measurement performance that exceeds your expectations with wide dynamic range, high accuracy and no saturation allowing application in both metering and protection systems.

H Nu™ FOCS solutions are an advanced, digital alternative to the conventional current transformer. Unlike conventional current transformers, H Nu™ FOCS solutions measure both AC and DC current and perform both revenue metering and protective relaying in the same device.

Producing a digital data stream, H Nu™ FOCS solutions are inherently compatible with the digital protocols and control systems used by modern networks (IEC 61850/61869).

Replacing extensive copper cabling with a single fibre-optic cable provides multiple benefits:

  • simplicity in both in installation and commissioning
  • highly effective isolation from the high voltage resulting in no explosion or electrocution risk
  • transmission ofsignals over large distances, so electrical current can be measured in remote locations.
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H Nu™ FOCS solutions do not contain oil or sulphur hexafluoride gas.

Frequently Asked

Collection of questions our clients ask us most frequently

Become optical ready with ease.

1
Licence H Nu patented ASP3I technology

ASP31 is the optical design and signal processing algorithm that enables accurate current measurement using an erbium-doped optical fibre source.

2
Licence ASP3I technology & integrate optoelectric modules

Licence ASP31 technology and integrate the optoelectric modules required to implement the technology.

3
Adopt the complete system

Adopt the entire system including a 19” rack mount unit containing all optoelectronic modules, a compatible optical current sensor head, and a high-voltage support insulator available in a wide range of insulation levels. (See diagram below.)

Learn more about our products

Optical Current Transducer

Optical Current Transducer

Faraday optical current sensor and support insulator

VIEW
Terminal Merging Unit (TMU10)

Terminal Merging Unit (TMU10)

Optical sensor merging unit

VIEW
ASP3I Optical Receiver Module (D10-01)

ASP3I Optical Receiver Module (D10-01)

Optical receiver and signal processor for highly accurate interferometric current measurements

VIEW

Have any question for us?

Contact us today for a free consultation.

Call Now +6140-829-7447

Other applications

For Distributors

Partner with H Nu™ to provide world-class systems to industries worldwide.

For OEM Integrators

Integrate market-leading optical technology & modules into your existing equipment for enhanced performance & safety.

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H Nu Pty Ltd Brochure 23