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Manual RMO-H                                                                                                                                         

 

 

M-RH00NN-300-EN                                                                                                                                                                       

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1.1.2  Terms of Use 

 
•  The RMO-H shall be used only if it is in a good technical condition. Its use shall be in accordance 

with  local  safety  and  industrial  regulations.  Adequate  precautions  must  be  taken  to  avoid  any  risks 

related to high voltages associated with this equipment and nearby objects.   

•  The RMO-H shall be used only for the application purposes described in the ”Intended Use” section. 

The manufacturer and distributors are not liable for a damage resulting from the wrong usage. The 

user bears responsibility for not following the instructions defined in this document.   

•  Do not remove the protective casing of the RMO-H.  
•  All service and maintenance work must be performed by qualified personnel only. 
 

1.1.3  Orderly Practices and Procedures 

 
•  The Manual shall always be available on the site where the RMO-H is used. 
•  Before  using  the  RMO-H,  all  personnel  (even  personnel  who  only  occasionally,  or  less  frequently, 

work with the RMO-H) assigned to operate the RMO-H should read the operations Manual. 

•  Do not make any modifications, extensions, or adaptations to the RMO-H. 
•  Use the RMO-H only with the original accessories provided by the manufacturer. 
•  Use the RMO-H and its original accessories for the device’s intended use only.

 

 

1.1.4  Device maintenance 

 

Device should be kept in a clean condition to prevent excessive dust or other contaminants affecting 

its  operation. It  should  be  cleaned  with  water/isopropyl  alcohol  after  noticing  any  dirt/contaminants 

on its surfaces. 

 

1.1.5  Operator Qualifications 

 
•  Testing with the RMO-H should only be carried out by authorized and qualified personnel. 
•  While  receiving  training,  instruction  or  education  on  the  RMO-H  device  personnel  should  remain 

under  the  constant  supervision  of  an  experienced  operator  while  working  with  the  test  set  and  the 

test object. 

 

1.1.6  Safe Operating Procedures 

 
•  Before putting the RMO-H into operation, check the test set for any visible damage. 
•  Do not operate the RMO-H under wet or moist conditions (condensation). 
•  Do not operate the RMO-H if explosive gas or vapors are present. 
•  Only the external devices which meet the requirements for SELV equipment according to EN 60950 

or IEC 60950 should be connected to the RMO-H through the serial interface. 

•  Removing  the  RMO-H  protective  casing  will  void  the  warranty.  Any  work  inside  the  instrument 

without prior authorization from DV Power will also void the warranty. 

•  If the RMO-H seems to be malfunctioning, please contact the DV Power Support Team (refer to the 

“Manufacturer Contact Information” section) after previously checking the “Error Messages” section. 

Summary of Contents for RMO-H

Page 1: ...Micro ohmmeter RMO H Handheld Micro Ohmmeter RMO H Manual Manual Version M RH00NN 300 EN This Manual refers to the firmware version 1 0x Publishing date 2018 01 10...

Page 2: ...Sides Grounded BSG Circuit Breaker 11 3 4 Settings 12 3 5 Measuring with RMO H 14 3 6 Measurement parameters 16 4 Error Messages 16 4 1 Error Message SD Card Initiation Failed 16 4 2 Error Message Co...

Page 3: ...ty instructions carefully It is not recommended the RMO H being used or even turned on without careful observation of the instructions listed in this Manual The RMO H should only be operated by traine...

Page 4: ...original accessories for the device s intended use only 1 1 4 Device maintenance Device should be kept in a clean condition to prevent excessive dust or other contaminants affecting its operation It...

Page 5: ...mmeter RMO H is a portable handheld device designed for measuring contact resistances of non inductive test objects used in the electric power industry or similar branches It is employed for resistanc...

Page 6: ...iminated The RMO H instrument can store internally up to 1000 measurements The results are saved on the micro SD card All measurements are time and date stamped DV Win software enables download and an...

Page 7: ...device 5 Protective Earth Connector Used for protection against parasitic currents or voltages 3 Current output terminal 6 Charger Connector 7 Connectors for the voltage sense cables Standard banana...

Page 8: ...ring and after a test operation Keyboard 3 Getting Started 3 1 Connecting RMO H to Test Object NOTE Cables should be connected and removed to from RMO H device ONLY when the RMO H is switched off CAUT...

Page 9: ...ding screw of the RMO H to a PE using only the manufacturer provided grounding cable When testing high voltage circuit breakers with RMO H a different cable s length could be used The short cable red...

Page 10: ...er test lead current and voltage sense cables labeled with black color When testing MV Circuit Breakers it is convenient to use Current and Sense cables with Kelvin probes Figure 3 2 Connecting RMO H...

Page 11: ...contacts can be corrected if the resistance of the grounding loop is known or measured The procedure is described in Application Note originally published by DV Power IBEKO Power AB in Year 2011 Main...

Page 12: ...d The UP and DOWN buttons are used for navigation and the ENTER button for entering the selected submenu Setting Memory To set default memory location on RMO H please use ENTER button to activate the...

Page 13: ...last saved setting of an Rmax value and a status Once these parameters are defined press ENTER to return to the Settings menu Setting Time Date To set RMO H s date and time please use the UP DOWN but...

Page 14: ...h field is selected When Bluetooth is activated the screen looks like in the figure below green colored status 3 5 Measuring with RMO H The start screen for setting the measurement parameters is prese...

Page 15: ...eater than maximum assigned value the result will be displayed in red color as presented in the figure below In case the measured resistance is lower than set Rmax value the result will be displayed i...

Page 16: ...ltage 3 7 V 25 C ambient temperature and use of recommended accessories 4 Error Messages Any operational error is indicated by an error status message 4 1 Error Message SD Card Initiation Failed The R...

Page 17: ...or during the test the error message Open Connection is displayed Note The error message Open Connection can be displayed not only in case one of the current cables is disconnected but also in case o...

Page 18: ...test shunt resistance value Declared accuracy of the test shunt Result measured with the instrument resistance voltage drop and generated current 5 2 Battery check If it is suspected that the device i...

Page 19: ...dware configuration and software revision Exact description of the problem including the test object information error messages and the sequence of events before it appeared List of solutions that hav...

Page 20: ...ents should be sent to DV Power freight pre paid unless other arrangements have been authorized in advance by DV Power Customer Service To prepare an instrument for shipment please follow these instru...

Page 21: ...Output voltage 3 7 V DC nominal 4 1 V max Measurement Resistance range 0 2000 m Resolution 0 1 999 9 0 1 1 000 9 999 m 0 001 m 10 00 99 99 m 0 01 m 100 0 999 9 m 0 1 m 1000 2000 m 1 m Typical accurac...

Page 22: ...chanical Protection Ingress Protection Rating IP54 Environmental conditions Operating temperature 10 C 55 C 14 F 131 F Storage transportation 40 C 70 C 40 F 158 F Humidity 5 95 relative humidity non c...

Page 23: ...nd 10 m black with TTA clamps 220 A rated CS 1Z310 35CLWC Current cables 2 x 1 3 m 25 mm2 with battery clamps 300 A rated C2 1Z3 25CLB1 Sense cables 2 x 1 3 m with alligator clamps A2 S2 1Z3 02BPA2 Cu...

Page 24: ...sumes no responsibility for errors or omissions or for damages resulting from the use of the information contained herein IBEKO Power AB cannot take over liability resulting in any way from the use of...

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