# What is Reactor Inductance Testing? Why is it Important?

**URL:** <https://forumautomation.com/t/what-is-reactor-inductance-testing-why-is-it-important/14297>\
**Category:** Electrical\
**Tags:** test\
**Created:** [August 3, 2026, 7:56am UTC](https://forumautomation.com/t/what-is-reactor-inductance-testing-why-is-it-important/14297 "2026-08-03T07:56:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Rabert](https://forumautomation.com/user_avatar/forumautomation.com/rabert/32/6784_2.png) [@Rabert](https://forumautomation.com/u/Rabert)\
**Post date:** [August 3, 2026, 7:56am UTC](https://forumautomation.com/t/what-is-reactor-inductance-testing-why-is-it-important/14297/1 "2026-08-03T07:56:01Z")

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> # What is Reactor Inductance Testing? Why is it Important?

Reactor inductance testing is performed to verify that a reactor’s inductance value matches its design specification and operates correctly under normal conditions.

This test is essential during **[factory acceptance](https://forumelectrical.com/surge-arresters-factory-acceptance-testing-procedure/)**, commissioning, maintenance, and after repairs to ensure reliable performance in power systems.

> ## Purpose of Reactor Inductance Testing

- Confirms the reactor’s actual inductance value.
- Detects winding damage, shorted turns, or core defects.
- Verifies compliance with design and manufacturer specifications.
- Ensures proper current limiting, harmonic filtering and voltage control.

Helps prevent equipment failures and improves system reliability.

> ## Why Reactor Inductance Testing is Important?

Accurate inductance values are critical for reactors used in capacitor banks, **[harmonic](https://forumelectrical.com/how-can-harmonics-in-a-vfd-affect-power-quality/)** filters, current-limiting applications, and transmission systems.

 ![1 - Copy](https://cdn.forumautomation.com/original/2X/0/029ff399921aa5757282a4532943640f06126d06.jpeg)

Regular inductance testing helps maintain electrical system stability, protects connected equipment and ensures the reactor performs its intended function efficiently throughout its service life.