Wrindu Provides Tan Delta Testing Solutions to Monitor Transformer and Cable Insulation Health

Shanghai, China - Jan 14, 2026 - Wrindu, a global leader in high-precision electrical testing equipment, today highlights the importance of Tan Delta Testing for transformers, cables, and other high-voltage assets. This non-invasive diagnostic method helps utilities and industrial operators identify insulation degradation before it leads to costly failures.

The Tan Delta value indicates insulation condition: a value below 0.5% (0.005 at 20 degrees C) is considered healthy. Increases beyond this threshold or rapid changes over time signal insulation degradation. Low resistive leakage current relative to capacitive current indicates good insulation, while high leakage shows energy loss, chemical degradation, or moisture ingress.

How the Test Works:

The Wrindu Tan Delta Tester [https://www.wrindu.com/product/transformer-tan-delta-tester] applies a controlled high AC voltage at adjustable frequencies, measuring both capacitive and resistive currents. The tan (delta) is calculated as the ratio of resistive to capacitive components. This allows operators to assess insulation quality, predict remaining lifespan, and make informed maintenance decisions. The device features advanced filtering to remove 50Hz interference, high-voltage output up to 10kV, and built-in safety protections including grounding and overcurrent prevention.

Compliance with International Standards: Wrindu Tan Delta Testers follow IEC 60851-5, which defines dielectric tangent testing procedures for enamel wires and insulation materials. Compliance ensures consistent, reliable results for transformers, capacitors, surge arresters, and other high-voltage equipment in both lab and field environments.

Practical Benefits:

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Early detection of insulation degradation

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Condition-based maintenance decisions

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Prevention of costly power outages

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Safe, non-destructive testing even in high-EMI environments

"Regular Tan Delta testing allows utilities and industrial operators to detect potential insulation problems early, maintain system reliability, and extend equipment lifespan," said Jack, Technical Director at Wrindu.

About Wrindu

Wrindu is a leading manufacturer of precision electrical testing equipment. With a focus on reliability, accuracy, and safety, Wrindu supports predictive maintenance and operational efficiency for high-voltage systems worldwide.

For more information, visit official website: www.wrindu.com / www.hvtesters.com

If you want know more about technical knowledge about power electrical industry, visit official blog website: blog.wrindu.com

Media Contact
Company Name: Rui Du Mechanical and Electrical (Shanghai) Co., Ltd.
Contact Person: Wrindu
Email:Send Email [https://www.abnewswire.com/email_contact_us.php?pr=wrindu-provides-tan-delta-testing-solutions-to-monitor-transformer-and-cable-insulation-health]
Phone: 13661908522
Address:No.500 Jianyun Road, Pudong New Area
City: Shanghai
Country: China
Website: https://www.wrindu.com/

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This release was published on openPR.