Voltech AT3600 User Manual page 305

Automatic transformer tester

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PECIFYING THE

When specifying turns ratio tests, it is preferable to avoid limits which are

unnecessarily tight, and which may therefore lead to measurement difficulties.

For example, if two equal secondary windings should have 10 turns each, the ratio

should be 1:1. One turn in error would produce a ratio error of 10% or -10% (i.e.

11:10 or 10:11), and therefore limits of +5% and -5% would be suitable to detect the

Intermediate Inductance

The Test Conditions for Turns Ratio by Inductance Measurement

VPN 98 - 024

Preferred test signal

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