An instrument transformer safely measures high electrical voltages or currents by reducing them to lower levels that can be easily monitored. Current transformers (CTs) reduce high currents, while voltage transformers (VTs) step down high voltages for accurate metering and protection.
Ahlstrom produces electrical insulation kraft paper for instrument transformers, in plain and creped paper, and in customized widths.
Insulation paper in IT transformers is crucial for safe operation of the grid. It prevents short circuits and electrical breakdowns. The paper also provides mechanical strength, keeping the windings intact. With high dielectric properties, it withstands high voltage, and its thermal resistance helps prevent overheating. Overall, Ahlstrom’s insulation paper ensures the durability and reliable performance of instrument transformers.

Electric insulating kraft paper for instrument transformers
- Made from extremely pure and clean pulp produced by Ahlstrom in Sweden
- Unique insulation properties
- Produced to precise customer specifications and according to international standards
Unveiling the Benefits of Ahlstrom Elektro-Tek™ for instrument transformers
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Multiple use
Plain paper for instrument transformer bushings
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Multiple use
Creped paper for instrument transformer heads and hair pin-type transformers
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Multiple use
Semi-conducting paper for shielding
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Certifications
Certified according to FSC®, PEFC™, ISO 9001:2008, ISO 14001:2004 and ISO 45001:2018
And there's more
Ahlstrom’s electrotechnical paper offering covers a wide range of end-use applications such as power transformers, instrument transformers, distribution transformers, bushings and cables.
Ahlstrom uses fiber from responsible and legal sources, and all
products qualify for Chain-of-Custody Forestry Credits and Certification.
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