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In setting up test procedures for radiation counter tubes, it is necessary to consider not only the test circuits but also the physical arrangements of test, such as nature of source, distance between source and counter, scattering by objects near the source or counter, shielding of the counter against unwanted radiations, and the background due to cosmic rays and general contamination. The relative importance of these various factors will depend on the type of counter under test.

定价： 55元 / 折扣价： 47 元

This guide describes diagnostic field tests and measurements that are performed on fluid-filled power transformers and regulators. Whenever possible, shunt reactors are treated in a similar manner to transformers. The tests are presented systematically in categories depending on the subsystem of the unit being examined. A diagnostic chart is included as an aid to identifying the various subsystems. Additional information is provided regarding specialized test and measuring techniques.… read more Interpretive discussions are also included in several areas to provide additional insight on the particular test or to provide guidance on acceptance criteria. These discussions are based on the authors’ judgment of accepted practice. It should be noted that the results of several types of tests should be interpreted together to diagnose a problem. Manufacturers’ acceptance criteria and other standards in the IEEE C57™ series take precedence over the content of this guide. read less

定价： 191元 / 折扣价： 163 元

This guide describes diagnostic field tests and measurements that are performed on liquid-filled power transformers and regulators. Whenever possible, shunt reactors are treated in a similar manner to transformers. The tests are presented systematically in categories depending on the subsystem of the unit being examined. A diagnostic chart is included as an aid to identifying the various subsystems. Additional information is provided regarding specialized test and measuring techniques.

定价： 164元 / 折扣价： 140 元

This recommended practice describes the test procedure for the detection and measurement by the wideband apparent charge method of partial discharges (PDs) occurring in liquid-filled power transformers and shunt reactors during dielectric tests, where applicable.

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This recommended practice describes the test procedure for the detection and measurement by the wideband apparent charge method of partial discharges (PDs) occurring in liquid-filled power transformers and shunt reactors during dielectric tests, where applicable.

定价： 69元 / 折扣价： 59 元

This recommended practice describes the test procedure for the detection and measurement by the wideband apparent charge method of partial discharges (PDs) occurring in liquid-filled power transformers and shunt reactors during dielectric tests, where applicable.

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This guide describes theoretical and practical ways to evaluate liquid-immersed power transformers, regulators, and reactors capabilities to withstand short-circuit currents resulting from external short-circuit faults. The equipment capabilities will be assessed based on calculations, design characteristics, construction techniques and material properties. The methods described are not mandatory and will not set forth requirements on how the transformer must be designed.

定价： 68元 / 折扣价： 58 元

This guide provides information and recommendations on the equipment, cable specimens, test conditions, test control methodologies, measurements, data analysis and interpretation in performing accelerated aging tests for 5 kV to 46 kV rated electric power cables using water-filled tanks. The accelerated aging tests may be time-to-failure tests and/or tests in which the samples are aged for fixed times followed by diagnostic testing.

定价： 76元 / 折扣价： 65 元