Dissipation/Power Factor & Capacitance Measurement (Tan Delta) on Power Transformers

The condition of the insulation is essential for secure and reliable operation of your transformer. Measuring capacitance and dissipation/power factor helps you to determine insulation condition in bushings or between windings.

Changes in capacitance can, for example, indicate mechanical displacements of windings or partial breakdown in bushings. Aging and degradation of the insulation, coupled with the ingress of water, increase the amount of energy that is converted to heat in the insulation. The rate of these losses is measured as dissipation factor.

With our testing systems, you can even determine the capacitance and dissipation/power factor at variable frequency. Therefore, aging phenomena can then be detected earlier, and corresponding action such as repair, oil treatment or drying can be initiated.

Benefits of this solution

Optimized power transformer test system

With TESTRANO 600 + CP TD12/15 you can measure transformer turns ratio, DC winding resistance, leakage reactance / short-circuit impedance, dissipation/power factor and demagnetize your power transformer.

Increased measurement sensitivity

The frequency sweep from 15 Hz to 400 Hz increases the sensitivity of the test, improving insulation condition assessment and detecting defects at an early stage.

Powerful CP TD12/15

The CP TD12/15 includes a high-voltage source (12 kV/15 kV, 300 mA), a reference capacitor and measurement electronics. It achieves laboratory precision even in environments with strong interferences.

Ideal for on-site testing

Both components, TESTRANO 600 and CP TD12/15, can be mounted on a trolley, which makes it easy to transport and thus ideal for on-site testing. With a weight of just 20 kg / 44 lbs, it is ideal for on-site and FAT testing.

CPC 100 + CP TD12/15 + PTM

With CPC 100 you can perform the most common electrical tests on power and instrument transformers, rotating machines, grounding systems, power lines and cables. CP TD12/15 completes your CPC 100 for dissipation/power factor and capacitance measurements.

CPC 100

Universal primary injection test set for substation assets

CP TD12/15

Module for capacitance and power/dissipation factor (tan delta) measurements

Primary Test Manager (PTM)

Diagnostic testing, condition assessment and data management of medium and high-voltage assets

Request info

TANDO 700

The portable TANDO 700 system offers high-precision measurement of dissipation/power factor (Tan Delta) and capacitance for high-voltage laboratory tests, such as routine and type tests, on various electrical assets. TANDO 700 also measures additional parameters such as power, current, voltage, impedance and frequency. TANDO 700 software shows you all measurement data in real-time, displays related trends and enables you to create customized reports.