Hioki 3455 Insulation Resistance Tester Test Insulation at up to 5kV Plus Polarization Index Test Description
The Hioki 3455 High Voltage 5kV Insulation Resistance Tester offers simple and safe testing of insulation resistance at five pre-set test voltage levels of 250V, 500V, 1000V, 2500V and 5000V. Selectable test voltages in 25 V steps from 250 V to 1000 V, and 100 V steps above 1000 V can also be chosen. Step voltage tests from 500V to 2.5kV & 1kV to 5kV can also be performed, the time for each step voltage can also be controlled. The Hioki 34555kV Insulation Resistance Tester also performs two other important tests the ‘Polarization Index’ test (commonly known as the PI test) and ‘Dielectric Absorption Ration’ test (commonly known as the DAR test).During the automated ‘Polarization Test’ the Hioki 34555kV Insulation Resistance Tester measures the insulation resistance after one minute and then again after 10 minutes, the reading obtained after 10 minutes should be higher than the 1 minute reading. The resulting ratio between the 10 minute and 1 minute resistance measurement is known as the ‘Polarisation Index’. When testing insulation resistance of windings on large electrical machines the PI result will depend on many factors including the type, age, condition of the insulation material and its environment, but historically over time test results will indicate a deterioration of the insulation until a point is reached were it is necessary to change the insulation material or remove the machine from service. The test leads are self-contained within the sealed rugged carry case. The complete unit weighs in at less than 3kg! Test data for different machines/locations can be segregated and stored in up to 100 data file locations. Communication with a PC or laptop is made possible via the free application software and USB lead. With this software stored data can be viewed and test certificates produced.
Hioki 3455 Insulation Resistance Tester Test Insulation at up to 5kV Plus Polarization Index Test Features
Test insulation resistance at voltages to up 5kV
Five pre-set test voltage levels at 205V, 500V, 1000V, 2500V and 5000V.
Selectable test voltages in 25 V steps from 250 V to 1000 V, and 100 V steps above 1000 V
Resistance measurements up to 5TΩ
Bar graph display up to 1TΩ
Ramp function for breakdown testing
Timer settings up to 30 minutes for timed tests
leakage current measurement from 1.00nA to 1.20mA
Automatic calculation of Dielectric Absorption (DAR) and Polarization Index (PI) with no additional setup
Guard system eliminates the effect of surface leakage current on high-resistance measurements
Warning function alerts the user that line voltage is present and gives the voltage reading up to 1000V DC or 750V AC for increased user safety
Measurements can be stored in up to 100 memory locations.
Large digital/analogue LCD for easy viewing
CAT III 1000 V, CAT IV 600 V safety rating
Hioki 3455 Insulation Resistance Tester Test Insulation at up to 5kV Plus Polarization Index Test Kit
The Hioki 3455 5kV Insulation Resistance Tester plus integral carry case, test lead set including croc-clips, USB lead, data management PC software & 6 AA batteries.