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DCR 60-2 DC Ramp Test Set
Brand: IRIS Power
The Iris Power DCR 60-2 is a simple off-line DC tester to identify problems in the stator groundwall insulation system of large AC electric machines before an unexpected in-service failure occurs.
Unlike the pass or fail of a DC or AC hi-pot test, the DC ramp test gives diagnostic information and often can be stopped before a failure occurs.
Unlike a stepped voltage test, the ramped voltage test enables the user to separate the polarization and capacitive current components from the leakage current so that small insulation defects can be easily found.
A single-phase test usually takes less than an hour to perform and can be done by one person.
The DCR 60-2 tests according to IEEE Standard 95-2002.
In manual mode, the DCR60-2 can also perform the “uniform time” and “grade time” voltage step DC tests, according to IEEE standard 95-2002.
The DC Ramp Test method has been proven in use by the US Bureau of Reclamation and others on a wide variety of machines with asphalt, polyester and epoxy-mica insulations.
Test curves are captured on a PC to allow easy comparison to similar machines or past results.
Features- Automatically ramps voltage from 0 to 60 kV
- Allows manual user-selected voltage control in the range from 0 to 60 kV
- Ground presence detection and protection circuits
- Built-in safe winding discharge circuit
- USB connection to PC to: display results as test progresses, store multiple curves and test parameters for later analysis and display curves side-by-side for test comparison
- Examination of the current versus voltage curve allows test stoppage before failure of insulation and diagnosis of damage, defects, and deterioration mechanisms.
- Automatic calculation of polarization index (PI)
Specifications
Brand
Current Metering
- 0-1/2.5 / 5 / 10 / 25 / 50 / 100 / 250 μA
Operating Altitude
- 0 to 3,000 metres
Operating Temperature
- 0°C to 40°C (32°F to 104°F)
Output Current
- 1.0 mA - Max.
Output Voltage & Metering
- 0 to 60 K Vdc, Negative Polarity
PC
- USB Interface, Windows® 7
Power Input
- 85 - 264 VAC, 2 A, 50/60 Hz
Ramp Rate
- 0 to 2.5 kV/Minute (Continuously Adjustable)
Shipping Case
- Control Unit: 810 x 530 x 330 mm
- HV Module: 810 x 530 x 420 mm
Standards
- Bureau of Reclamation Report REC-ERC-78-7
- CE Compliance
- Compliant with IEEE Standard 95-2002
- EN 61326 for EMC
Storage Temperature
- -25°C to 60°C (-13°F to 140°F)