3128
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Catalog excerpts

3128 - 1

Quality and reliability is our tradition Digital High Voltage Insulation Tester ' Graphic represen tation'on large backlight display O Microprocessor controlled high voltage insulation resistance tester with Diagnostic functions. OSuitable for analyzing the insulation characteristics of cables, transformers, motors, generators, high-pressure switches, insulators, wiring installations, etc. Fine adjustment of voltage setting at each range is also O Graphic representation of the insulation resistance and leakage current versus time on large display with bar graph and backlight. OCan be operated from built-in rechargeable battery or O Automatic discharge after test with monitoring of the dis- charge voltage. O Internal memory can store about 40,000 data (max). O Robust design for field use with IP64 rating (with lid closed). KYORITSU ELECTRICAL INSTRUMENTS WORKS,LTD.

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3128 - 2

KEW 3128 Functions The KEW 3128 highest test voltage of 12kV offers greater flexibility for the testing of HV Machines than instruments with 5/10 kV test voltages that are normally available on the market. The very high short-circuit current up to 5mA speeds up testing of capacitive loads minimizing charging times. Wide insulation resistance measurements up to 35TΩ good insulation to be monitored. Six standard test voltages: 500V, 1000V, 2500V, 5000V, 10000V and 12000V. Fine adjustment of test voltage allows insulation testing according to manufacturers’ specification. Safety Design •...

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3128 - 3

Diagnostic Insulation Tests In addition to the classical “spot“ Insulation Resistance tests, Leakage current and Capacitance measurements, KEW 3128 offers the following valuable Diagnostic Insulation tests. PI Measurement (Polarization Index) This diagnostic test recognises the fact that "good" insulation will show a gradually increasing of Insulation Resistance after the test voltage is applied. The Insulation Resistance is measured at two different times: normally at 1 min and 10 min (other time settings are possible). Then the instrument divides later reading by the earlier reading,...

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3128 - 4

●KEW 3128 Specification Insulation resistance Rated voltage Max measurement value 500V 500GΩ 0~50GΩ ±5%rdg±3dgt *Accuracy is not guaranteed with setting of 250V or less 1T~10TΩ ±20%rdg 10T~35TΩ Values are displayed, but accuracy isn’t guaranteed Selectable range Max 5.0mA 2.5MΩ or more 5MΩ or more 2500V ±10%±20V 0~+10% 1225~3000V (in steps of 25V) DCV : ±30~±600V, ACV : 30~600V(50/60Hz) ±2%rdg±3dgt 5.0nA~2.40mA (Depending on the insulation resistance) 5.0nF~50.0μF Withstand voltage Operating temperature & humidity range Storage temperature & humidity range Applicable standards Voltage...

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