Uniks ISO-5, Operating Manual

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5
CHAPTER 1
GENERAL ASPECTS
1.1 Features of the meter
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Selectable Test Voltage up to 5000 V (ISO 5 model) o 10.000V (ISO 10
model): Test voltages can be set to any desired value from 100V to 5000V ISO 5
Model o 100V to 10.000V ISO 10 model with steps of 10V up to 1000V and steps of 25V
above 1000V.
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High Insulation resistance measurement: Insulation resistance measurement from
50kΩ to 10TΩ (ISO 5) o 2 0TΩ (ISO 10) .
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Noise rejection - 8mA: High Noise immunity allows accurate measurement under noisy
environment.
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Polarization Index: Polarization index (PI) testing is an extension of the insulation
resistance test and is designed to check specific issues such as moisture and insulation
deterioration.
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Dielectric Absorption Ratio: DAR measurement is a diagnostic test similar to the
Polarization Index (PI), but DAR takes the ratio of the Insulation Resistance usually
measured at 30 sec and 1 min.
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Dielectric Discharge Test: Dielectric Discharge(DD) test is a diagnostic insulation test
that allows aging and deterioration to be assessed.
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Step Voltage Test: Step Voltage Test is designed as a controlled over-voltage or proof
test to provide an additional evaluation of the insulation system integrity.
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Ramp Diagnostic Test: The Ramp Test is performed with a slowly rising voltage.
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Software Selectable Filter: User selectable software fi lter can be used depending on
noise levels. This help in accurate reading in noisy environments.
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Capacitance Measurement: Capacitance can be measured from 1nf to 50uF.