METRISO 5000D-PI Digital Insulation Tester.
Instrument for conventional insulation measurement with selectable voltages of up to 5000 V .
Developed and manufactured for all known types of long-term insulation measurement as well.
Insulation Resistance Digital Tester
|METRISO 5000 D-PI||Insulation tester 5000V, digital|
Large measuring range from 0.1 MOhm ... 1 TOHM.
Variable test voltages, or in fixed steps of 100 V, 250 V, 500 V, 1.0 kV, 1.5 kV, 2.0 kV, 2.5 kV, 5.0 kV.
Polarization index and absorption ratio.
Voltage measurements to 1000 V.
Frequency measurement from 15 Hz to 1 kHz .
Capacitance measurement from 0.1 to 5 µF.
Measurement of electrical discharge.
Guard terminal for the elimination of surface currents 5 m extension cable included as accessory.
Supply power from mains, internal set of storage batteries or external 12 V supply.
Backlit dot matrix display.
Digital display of measured values and limit values, characteristic curve display for polarization index.
Timer function: 1 second to 100 minutes
Test Voltages to 5000 V.
The instrument is suitable for non-destructive measurement of insulation resistance in electrical
systems, as well as in machines, transformers, cables and electrical equipment utilized in, for example, locomotives, street cars and ocean going vessels with selectable test voltages of up to 5 kV.
Voltage Measurement to 1000 V.
Testing for absence of voltage at the device under test in systems of up to 1 kV can be performed with the voltage measuring range.
Discharging Capacitive Devices Under Test.
Capacitive devices under test such as cables and coils, which may be charged by the test voltage, are discharged by the measuring instrument. The falling voltage value can be observed at the display. Measurements per EN 61557 Parts 1 and 2 (VDE 0413).
Nominal current amounts to 1 mA at a test voltage of 100 V, 250 V, 500 V or 1000 V.
Highly Insulated Measurement Cables.
The highly insulated measurement cables are permanently connected for safety reasons, and due to technical measuring considerations. Danger resulting from inadvertently disconnected cables, for example in the event of charging caused by capacitive devices under test, is thus avoided.
A polarization index test is recommended for electrical machines. This procedure involves expanded
testing of insulation resistance. DC measuring voltage from the METRISO.5000 D-PI is applied to the
insulation for a duration of 10 minutes.
Measured values are documented after one minute, and after ten minutes.
If the insulation is good, the value measured after ten minutes is higher than the value measured after
one minute. The relationship between the two measurement values is the polarization index.
Charged material within the insulation is aligned due to the application of measuring voltage over a
long period of time, resulting in polarization. The polarization index indicates whether or not the charged
material contained in the insulation can still be moved, thus allowing for polarization.
This, in turn, is an indication of the condition of the insulation.