Winding Ohmmeter
RMO50M |
Brochure RMO50M 
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- Lightweight - only 8 kg
- Test current 5 mA - 50 A DC
- Measuring range 0,1 µΩ – 1 kΩ
- Mechanical protection IP43
- Extremely quick measurement
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| High DC current resistance meter for motors/generators |
| Description |
The Winding Ohmmeter RMO50M is designed for winding resistance measurement of electrical motors and generators. RMO50M generates true ripple free DC current. The test result is displayed as R=U/I.
The RMO50M instrument can store up to 100 measurements. All measurements are time and date stamped. Using DV-Win software a test can be performed from a PC, and the results can be obtained directly at a PC. Using DV-Win the result can be arranged as an Excel spreadsheet which can be later shown as a diagram and printed for a report. The RMO50M has very high ability to cancel electrostatic and electromagnetic interference in HV electric fields. It is achieved by very efficient filtration. The filtration is made utilizing proprietary hardware and software. |
| Typical Application |
| Typical application of RMO50M is measuring the resistance of: |
- Generators and electrical motors
- High-current busbar joints
- Cable splices
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| Accessories |
| Included |
- DV-Win PC software including USB cable
- Mains power cable
- Ground (PE) cable
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| Recommended |
- Current cables 2 x 5 m 10 mm2
with clamp
- Sense cables 2 x 5 m with clamp
- Transport bag
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| Voltage sense cables |
Current cables |
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| Optional |
- Built-in thermal printer 80 mm
- Test shunt 150 A / 150 mV
- Current cables 2 x 10 m 10 mm2 with clamps
- Sense cables 2 x 10 m with clamp
- Transport case
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| Transport bags |
Shunt |
Transport case |
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| Technical data |
| 1 Mains Power Supply |
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| - Voltage |
110 – 230 V AC |
| - Frequency |
50 – 60 Hz |
| 2 Output data |
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| - Test current |
5 mA DC- 50 A DC |
| - Measuring range |
Resolution |
| 0,1 µΩ - 999,9 µΩ |
0,1 µΩ |
| 1,000 mΩ - 9,999 mΩ |
1 µΩ |
| 10,00 mΩ - 99,99 mΩ |
10 µΩ |
| 100,0 mΩ - 999,9 mΩ |
0,1 mΩ |
| 1,000 Ω - 99,99 Ω |
10 mΩ |
| 100,0 Ω - 1000 Ω |
0,1 Ω |
| - Typical accuracy |
±(0,2% rdg + 0,2% FS) |
| 3 Environment conditions |
| - Operating temperature -10 °C - +55 °C / 14 F - 131 F |
| - Storage temperature -40°C - +70 °C / 40 F - 158 F |
| - Maximum relative humidity 95 % non-condensing |
| - Mains supply voltage fluctuations up to ±10 % of the nominal voltage |
| - Installation/overvoltage category II |
| - Pollution degree 2 |
| 4 Dimensions and Weight |
| - Dimensions |
198 mm x 255 mm x 380 mm
7,8 in x 10 in x 15 in
(W x H x D) without handle |
| - Weight |
8 kg / 17,6 lb |
| 5 Mechanical protection |
IP43 |
| 6 Warranty |
three years |
| 7 Safety Standards |
| - European standards |
LVD 2006/95/EC
EN 61010-1 |
| - International standards |
IEC 61010-1
UL 61010-1
CAN/CSA-C22.2 No. 61010-1, 2nd edition, including Amendment 1 |
| 8 Electromagnetic Compatibility (EMC) |
| - CE conformity |
EMC directive 2004/108/EC |
| - Emission |
EN 61326-1 |
| - Immunity |
EN 61326-1 |
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