Vanguard IRM-5000P - Manual (Page 7)

REV 2 IRM-5000P USER’S MANUAL
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The SV test measures insulation resistances in five equal voltage steps up to a final test voltage
of 2500 Vdc or 5000 Vdc. The voltage is stepped up in 1/5 increments of the final test voltage
every one minute, five minutes, or other user-defined time interval.
Dielectric Discharge (DDS) Test
The DDS test measures the dielectric absorption of an insulator. This test can be used to
diagnose an insulation problem in cases where multi-layered insulation is used. The default test
requires 30 minutes of applying full voltage followed by a one minute discharging of the Device
Under Test (DUT). The DD value is then calculated using the formula:
DD Ratio = Current after 1 minute (mA) / (Test Voltage X Capacitance)
Capacitor Discharge
After each test, the IRM-5000P automatically discharges any test voltage left on the test
material. An audible alarm and a message on the screen warn the operator of the shock hazard
during each discharging period.
Capacitance Display
The IRM-5000P automatically measures the capacitance of the device being tested. The
capacitance-measuring range is from 0.01 µF to 10.0 µF.
Volt Meter
The IRM-5000P can also be used to measure voltages. Measurable input voltage ranges from 50
V to 1250 V, AC or DC.
User Interface
The IRM-5000P features a back-lit LCD screen (20 characters by 4 lines) that is viewable in both
bright sunlight and low-light levels. A rugged, 16-key, membrane keypad is used to control the
unit.
Built-in Thermal Printer
The IRM-5000P’s built-in 2.5-inch wide thermal printer can print the test reports in both tabular
and graphic formats.
Internal Test Record Storage
The IRM-5000P can store up to 100 test records in Flash EEPROM. Test records can be retrieved
and printed on the built-in thermal printer, or they can be transferred to a PC via the unit’s RS-
232C interface.
Computer Interface
The IRM-5000P can be computer-controlled via its RS-232C interface. A Windows® XP/Vista-
based analysis software application is provided with each unit. Using this software, test records
can be retrieved from the IRM-5000P and then stored on the PC for future analysis and report
generation. A special feature of the software can overlay several resistance curves on-screen
and can be used to monitor the resistance deterioration of a test material over time.
Additionally, test records can be exported in Microsoft® Excel format for further analysis.