Showing results: 76 - 90 of 177 items found.
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KVJS-7000 -
KV Hipot Power Test Equipment Co.,Ltd
Insulation oil dielectric loss and resistivity tester is mainly used to test dielectric loss factor and resistivity of insulation oil and liquid insulation medium.
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Vettiner
High accuracy Schering bridge for the measurement of capacitance and dielectric dissipation factor (tan d) for the characterization of dielectric insulators, calibration of standards and manufacturing test of all industrial equipment.
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ASTM D149 -
National Technical Systems
This test method covers procedures for the determination of dielectric strength of solid insulating materials at commercial power frequencies, under specified conditions. Unless otherwise specified, the tests shall be made at 60 Hz. However, this test method is suitable for use at any frequency from 25 to 800 Hz. At frequencies above 800 Hz, dielectric heating is a potential problem. This test method is intended to be used in conjunction with any ASTM standard or other document that refers to this test method. References to this document need to specify the particular options to be used. It is suitable for use at various temperatures, and in any suitable gaseous or liquid surrounding medium. This test method is not intended for measuring the dielectric strength of materials that are fluid under the conditions of test. This test method is not intended for use in determining intrinsic dielectric strength, direct-voltage dielectric strength, or thermal failure under electrical stress (see Test Method ASTM D3151). This test method is most commonly used to determine the dielectric breakdown voltage through the thickness of a test specimen (puncture). It is also suitable for use to determine dielectric breakdown voltage along the interface between a solid specimen and a gaseous or liquid surrounding medium (flashover). This test method is similar to IEC Publication 243-1. All procedures in this method are included in IEC 243-1. Differences between this method and IEC 243-1 are largely editorial. Note: The above information is taken directly from the test method Scope published in ASTM D149.
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Weshine Electric Manufacturing Co., Ltd
Insulation is one of the most important constituents of a transformer. Any weakness in the insulation may cause failure of transformer. To ensure the effectiveness of the insulation system of a transformer, it must confirms the dielectric test. But the power frequency withstand test alone can not be adequate to demonstrate the dielectric strength of a transformer.
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HT-Series -
Becker & Hickl GmbH
Dielectric Voltage Withstand Test or High Potential Test (HIPOT test) is a 100% production line test to verify the quality & electrical safety characteristics of products.
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HT-Series -
Lumetronics
Dielectric Voltage Withstand Test or High Potential Test (HIPOT test) is a 100% production line test to verify the quality & electrical safety characteristics of products.
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UI-FT07 -
Unuo Instruments
Shoe Dielectric Resistance Tester, also named as shoe high voltage withstand tester, is used to test shoe sole and heel electrical insulation, to check shoe performance of voltage withstand and current leakage. It is to test safety shoe dielectric resistance ability (Electrical Hazard Testing) as mentioned in ASTM F2412.
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LCT-3 -
Criterion Instruments Limited
Model LCT-3 Line-cord tester is an automatic test set to check continuity, polarity and dielectric breakdown on three-wire line cords.
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Shanghai Launch Electric Co., Ltd.
The electrode is used in dielectric constant εr and dielectric loss tgδ test for solid electrical material such as insulation paint, resin, rubber, fibrillated product, laminate, mica product, plastic, cable, film composite, porcelain and glass. The electrode is designed to use under power frequency of 50Hz, and comply with international standard GB1409-78.
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Hilkar
For low and medium voltage switchgear including :*Circuit breakers*Contactors*Disconnect switches*Fuses*Miniature circuit breakersApplied tests for low and medium voltage switchgear :*Dielectric withstand test*Impulse withstand test*Breaking capacity test*Mechanical life testElectrical life test*Over load performance test*Short circuit breaking capacity test**Short time short circuit impulse current test*Temperature rise test*Operation performance testTests for low & medium voltage panels :*Short time short circuit impulse current test*Dielectric test*Impulse withstand voltage test*Temperature rise test
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Megger Group Ltd.
The primary test methods used to assess the condition of the active insulation components in transformers and bushings, on site, include:1) power factor/tan δ,2) variable frequency power factor/tan δ (1 - 500 Hz)3) dielectric frequency response (DFR) [a dielectric response method], and4) moisture in oil measurements (for transformers).
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