Generator Power Position Displacement Test Instrument

Overview

Routine preventive tests often struggle to detect defects in the insulation of the cold end windings within turbine generators. The DC voltage surface potential method test effectively identifies insulation defects at the stator winding ends. Inter-phase short circuit faults at the stator ends cause significant economic losses, for which the Ministry of Power Industry and the Ministry of Mechanical Industry have issued safety and technology directives.1994）86The document specifies that the insulation measurement test for the terminal hand package of generators is one of the important test items for generators.EDBM-30The surface potential tester for generators fully meets86High-tech product embodying the spirit of Document No. [insert number], its introduction into use has been extremely....Dati has enhanced the maintenance efficiency of generators.

Voltage Difference Meter, Generator Voltage Difference MeterEDBM-30Generator Surface Potential Tester, Generator Potential Offset Tester, Generator Stator Hand Pack Insulation Tester, Generator Surface Potential Measurement Rod, Generator Stator Coil Terminal Surface Potential Tester. The Generator Stator Core End Surface Potential Detector, Generator Stator Coil End Surface Potential Measuring Instrument, and Generator Hand Insulation Measurement Rod are insulation testing methods that utilize the surface potential method (also known as potential shift method) to detect insulation defects in generator stator bars. They assess the compactness and relative insulation strength of the hand-insulated ends of the stator. These methods address the shortcomings of not being able to detect end insulation defects during generator stator winding AC/DC withstand tests. They can identify defects such as poor insulation of the wire leads, coil nose end insulation wrapping defects, insufficient filling of the insulation box, poor curing of the binding涤玻rope, and poor welding quality of the stator hollow copper wire at the end joints. The Generator Stator Coil End Surface Potential Measurement is a new testing project, with the coil ends acting as a supervisory role, further enhancing the reliability of the generator's safe operation.

Technical Specifications: 1Input Resistance100M

           2Test Voltage:DC0-30KV

           3Voltage Accuracy:1.0%

Cautionary Note:

    1When wrapping the end with aluminum foil, it must be tightly packed; otherwise, the aluminum foil and insulating surface will form a capacitor, resulting in a significant discharge current when the measuring rod makes contact.,Resulting in incorrect assessment.

    2The terminal packaging is divided into the line rod side and the drainage pipe side, with an interval greater than...3Inches, it's easier to identify which side the issue is on when the potential is high. The main points are actually the root and cone sections; the middle section is not very significant for measurement.

    3The microammeter with a serially connected measuring rod is convenient, as it offers both easy reading and protection for the meter during high current measurements.

    4The terminal connector, located at the bottom of the housing and difficult to measure, should be pre-wired for convenience.

    5It is crucial to note the correct slot number accurately to avoid mistaken identity; please take this to heart!

    6The generator must undergo testing without water, necessitating a thorough blowing of the stator cooling water first.