The Winding Ohmmeter DV Power RMO50M
SKU: RMO50M-EU-R1
The RMO50M device is specifically designed for measuring the resistance of low inductive and non-inductive loads. It is built to comply with the safety standard IEC 61010-1, ensuring safe operation during testing procedures.
- Test current 5 mA – 50 A
- Measuring range 0,1 µΩ – 1 kΩ
- Typical accuracy ± (0,1 % rdg + 0,1 % FS)
Free shipping over 200 EUR
Estimated shipping time 4-5 weeks
Estimated shipping time 4-5 weeks
The RMO50M device is specifically designed for measuring the resistance of low inductive and non-inductive loads. It is built to comply with the safety standard IEC 61010-1, ensuring safe operation during testing procedures.
- Test current 5 mA – 50 A
- Measuring range 0,1 µΩ – 1 kΩ
- Typical accuracy ± (0,1 % rdg + 0,1 % FS)
Intended Use
The winding resistance tester, DV Power RMO50M, finds typical applications in measuring the resistance of low inductive test objects like motors and generators.The DV Power RMO50M rotating machine winding ohmmeter is employed in various scenarios including resistance measurement during manufacturing, commissioning, and testing of:
- Generators and electrical motors
- High current busbar joints
- Cable splices
How to Use RMO50M?
The RMO50M is primarily designed for measuring the resistance generators and electrical motors windings. RMO50M automatically regulates the injection of current and discharge of energy from the test object.The winding-ohmmeter RMO50M is a precise measuring tool that generates a true DC ripple-free current. Another useful feature is the delta R function, which indicates the stability of the measurement readings and helps in obtaining accurate results.
RMO50M Low Inductance Winding-Ohmeter Design
The RMO50M is a reliable test device that can store up to 1000 measurements in internal memory. Three independent channels enable the testing of three windings in series. A built-in thermal printer is available as an option. Free DV-Win software is included in the purchasing price and communicates with the RMO50M winding-ohmmeter via USB or RS232 interface. It allows you to run the test remotely from a PC, as well as to download test results, analyze them, and generate fully configurable test reports. As a digital low inductance winding-ohmmeter is the ideal choice for industries that require precise and consistent measurement of electrical resistance.Connecting RMO50M to Test Object
The RMO50M device follows Kelvin's (four-point) measurement principle for its connection principle. This principle ensures accurate measurements by using separate "Voltage Sense" terminals attached to one side of the measuring clamps and "Current Cables" attached to the other side of the measuring clamps. The resistance of the current cables and clamps is effectively eliminated from the resistance measurement. This configuration helps to provide precise and reliable resistance readings by minimizing the impact of any additional resistance in the measurement setup.| Product information | |
|---|---|
| Product name | The Winding Ohmmeter DV Power RMO50M |
| Brand | DV Power |
| Country of origin | Sweden; |
| Motor and generator winding ohmmeter | |
| Test currents | 5 mA – 50 A DC |
| Output voltage | up to 8 V DC |
| Measurement range | 0,1 μΩ – 1 kΩ |
| Mesurement resolution | 0,1 μΩ – 0.1 Ω |
| Typical accuracy | ± (0,1 % rdg + 0,1 % FS) |
| Temperature Measurement | |
| One temperature measurement channel | Thermometer Pt100 class B |
| Mesurement range | -50 °C – +180 °C |
| Mesurement resolution | 0.1 °C |
| Printer (optional) | |
| Printer | Thermal printer |
| Paper width | 58 mm (2,3 in) |
| Power Supply | |
| Powered by | Mains power |
| Mains power connection according to | IEC/EN60320-1 UL498, CSA 22.2 |
| Mains power input voltage | 90 – 264 V AC |
| Mains power input frequency | 50/60 Hz |
| Input power | 600 VA |
| Data Storage | |
| Internal memory positions | 1000 |
| Computer Interface | |
| Interface v1 | USB (standard) |
| Interface v2 | RS232 (optional) |
| Display | |
| Display v1 | LCD screen with 20 characters by 4 lines |
| Display v2 | LCD with backlight |
| Environmental Conditions | |
| Operating temperature | -20 ºC – +55 ºC (-4 ºF – +131 ºF) |
| Storage & transportation | -40 ºC – +70 ºC (-40 ºF – +158 ºF) |
| Humidity | 0 % – 95 % relative humidity |
| Applicable Standards | |
| Installation/overvoltage | CAT II IEC/EN 61010-1 |
| Pollution | Degree 2 |
| Low voltage directive | Directive 2014/35/EU (CE Conform) |
| Electromagnetic compatibility | Directive 2014/30/EU (CE Conform) EN 61326-1 |
| Dimensions and Weight | |
| Dimensions (W x H x D) | 250 x 198 x 350 mm (9,9 x 7,8 x 13,8 in) |
| Weight | 8 kg (17,6 lbs) |
- Current cables 2 x 5 m 10 mm2 with TTA clamps
- Cable bag
- Ground (PE) cable
- USB cable
- Current connection cable 1 x 1 m 10 mm2 with TTA clamps (2pcs)
- Mains power cable EU 16 A
- RMO50M device
- Sense cables 2 x 5 m with TTA clamps (3pcs)
- USB with DV-TR software
- Transport bag for instruments in Metal housing
The DV-Win software enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. The software can also perform the calculations necessary for the “Heat Run” test. All results can be exported in the report format. The standard interface is USB.
