A Modern and Objective Test of Stator Core Wedges

Model WTD-501

• Make sound maintenance decisions based upon reliable and consistent WTD data
• Use for all rotating machinery, including ripple springs
• Repeatable, objective, numeric test data removes subjectivity of hand tapping methods
• Fast, easy wedge tightness testing and analysis
• Permanent record of test data
• Easy report generation

The WTD-501 allows maintenance personnel to easily and effectively assess the tightness of wedges. Electronic measurement and storage enables easy and accurate trending of wedge tightness data from test to test.

Stator wedges are traditionally tested for tightness by tapping them with a hammer and listening to the sound produced. This method is slow and prone to discrepancies. Electronic wedge tightness evaluation is faster, more accurate and provides more consistent results. The WTD-501 can be used to test all types of generator and motor stator wedges, including those with ripple springs.

A hand-held probe automatically taps and measures each wedge approximately 30 times in three seconds. An Accelerometer gathers the data and transmits it to the WTD-501. Results are presented on a PC in the form of numericvalues and a color-coded tightness map.

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