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ANSI/IEEE 251-1984 - IEEE Guide: Test Procedures for Direct-Current Tachometer Generators

Description: This test procedure covers instructions for conducting and reporting the more generally applicable and acceptable tests to determine the performance characteristics of direct-current tachometer generators. Direct-current tachometer generators are used for a variety of indicating and control purposes and a characteristic of primary importance in one application may be of little or no importance in another. This procedure shall not be interpreted or construed as requiring the making of all or any of the tests herein in any given transaction.
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