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
- Automatic discharge circuit
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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 DC ripple free current. The test result is displayed as R=U/I.
The RMO50M instrument can store up to 500 measurements. All measurements are time and date stamped. Using RMOWin-M software a test can be performed from a PC, and the results can be obtained directly at a PC. Using RMOWin-M 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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| Standard accessories |
- RMOWin-M PC software
- Mains power cable
- Ground (PE) cable
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| Voltage sense cables |
Current cables |
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| Optional accessories |
- Current cables 2 x 5 m 10 mm2
- Sense cables 2 x 5 m 2,5 mm2
- Built-in thermal printer
- Test shunt 150 A / 150 mV
- Current cables 2 x 10 m 10 mm2
- Sense cables 2 x 10 m 2,5 mm2
- Transport bags
- 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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| - Connection |
according to IEC/EN60320-1; UL498, CSA 22.2 |
| - Voltage single phase |
110 V - 240 V AC, +10 % - –15 % |
| - 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 - +50 °C / 14 °F - +122 °F |
| - Storage and transportation |
-40 °C - +70 °C / -40 °F - +158 °F |
| - Humidity |
5 % - 95 % relative humidity, non condensing |
| 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 3111-1
CAN/CSA-C22.2 No 1010.1-92 |
| 8 Electromagnetic Compatibility (EMC) |
| - CE conformity |
EMC standard 2004/108/EC |
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