Máy đo điện trở đất và điện trở suất Sonel MRU-120 (3p, 4p, kìm đo)

DESCRIPTION

Possible measurements:

• earth resistance measurment with 3-pole,4-pole method,
• earth resistance measurement without disconnecting measured earths (using clamp),
• continuity of equipotential bondings and protecting conductors
• two clamps earth resistance measurement without auxiliary test probs,
• earth resistivity measurement,

• It allows to take the measurements of:

  • earth resistance using auxiliary electrodes,
  • earth resistance using auxiliary electrodes and clamp (for measurements of multiple earth)
  • earth resistance using double clamps for measuring multiple earthing without underground connections,
  • ground resistivity (Wenner method),
  • measurement of continuity of equipotential bondings and protective conductors (meeting the requirements of IEC 60364 - 6-61:2000 section 6.12.2) with auto-zero function – with current 200 mA.

  Additionally:

  • measurement of resistance of auxiliary electrodes R_S and R_H,
  • measurement of interference voltage,
  • measurement of interference frequency,
  • measurement in the presence of interference voltage in the power network with frequency 50 Hz, 60 Hz
  • selection of maximum measuring voltage (25 V and 50 V)
  • introducing the distance between the electrodes for the resistivity in metres (m),
  • memory of 990 measurements (10 banks of 99 cells each),
  • calibration of clamp used,
  • real time clock (RTC),
  • data transmission to the computer (USB, wireless),
  • indication of battery state.

  Electric security:

  • type of insulation: double, according to EN 61010 - 1 and IEC 61557
  • measurement category: CAT IV 300 V acc. to EN 61010 - 1
  • protection class acc. to EN 60529: IP54

  
  Rated operational conditions:

  • operation temperature: -10...+50°C
  • storage temperature: -20...+70°C
  • humidity: 20...80%

  Other technical data:

  • LCD display: graphic, backlighted
  • interface: USB, wireless
  • number of measurements carried out of set of batteries: > 500
  • warranty: 24 months

  Measurement of interference voltage

  Range	Resolution	Accuracy
  0...100 V	1 V	±(2% m.v + 3 digits)

  • singnalling overvoltage 24 V or 40 V rms
  • measurement for DC and AC 45…65 Hz,

  
  Measurement of earth resistance (method 3- and 4-pole) 
  measurement range to IEC61557 - 5: 0,30 Ω...19,9 kΩ

  Range	Resolution	Accuracy
  0,00...19,99 Ω	0,01 Ω	±(2% m.v. + 2 digits)
  20,0...199,9 Ω	0,1 Ω
  200...1999 Ω	1 Ω
  2,0k...9,99 kΩ	0,01 kΩ	±(5% m.v. + 4 digits)
  10,0k...19,9 kΩ	0,1 kΩ

  • measurement current: under short circuit >200 mA,
  • voltage on open terminals: selectable <25 V AC or <50 V AC,
  • frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for 60 Hz),

  
  Measurement of continuity of equipotential bondings and protective conductors (Rcont)
  measurement range to IEC61557 - 5: 0,24 Ω...19,9 kΩ

  Range	Resolution	Accuracy
  0,00...19,99 Ω	0,01 Ω	±(2% m.v. + 2 digits)
  20,0...199,9 Ω	0,1 Ω
  200...1999 Ω	1 Ω
  2,0k...9,99 kΩ	0,01 kΩ	±(5% m.v. + 2 digits)
  10,0k...19,9 kΩ	0,1 kΩ

   

  • voltage on open terminals: <24 Vrms but >4 Vrms,
  • measurement current: under short circuit >200 mA,
  • frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for networks 60 Hz), possible choice of measurement frequency in menu,
  • auto-zero function measurement leads

  Measurement of resistance of auxiliary electrodes R_H and R_S

  Range	Resolution	Accuracy
  0...999 Ω	1 Ω	±(5% (RS+RE+RH) + 8 digits)
  1,00k...9,99 kΩ	0,01 kΩ
  10,0k...19,9 kΩ	0,1 kΩ

  
  Measurement of multiple earth resistance with using the clamp and auxiliary electrodes (3p + clamp) 
   

  Range	Resolution	Accuracy
  0,00...19,99 Ω	0,01 Ω	±(8% m.v. + 3 cyfry)
  20,0...199,9 Ω	0,1 Ω
  200...1999 Ω	1 Ω

  • voltage on open terminals: selectable <25 V AC or <50 V AC,
  • measurement current: under short circuit > 200 mA,
  • frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for 60 Hz),

  
  Measurement of multiple earth resistance with using double clamps

  Range	Resolution	Accuracy
  0,00..19,99 Ω	0,01 Ω	±(10% m.v. + 3 digits)
  20,0...149,9 Ω	0,1 Ω	±(20% m.v. + 3 digits)

  • frequency of measurement current 125 (for networks 50 Hz) or 150 Hz (for networks 60 Hz)

  
  Measurement of ground resistivity 
  Measurement method: Wennera, ρ=2πLR_E

  Range	Resolution	Accuracy
  0,0...199,9 Ωm	0,1 Ωm	depending on measurement accuracy RE with 4p method, but not less than ±1 digit
  200...1999 Ωm	1 Ωm
  2,00k...19,99 kΩm	0,01 kΩm
  20,0k...99,9 kΩm	0,1 kΩm
  100k...999 kΩm	1 kΩm

  L – distance between probes: 1...50 m

EXTRA ACCESSORIES

• 

  CRAMP

  Index: WAZACIMA1

• 

  EARTH CONTACT TEST PROBE…

  Index: WASONG80

• 

  L3 CARRYING CASE FOR A 80…

  Index: WAFUTL3

• 

  CROCODILE CLIP, RED, 1…

  Index: WAKRORE20K02

• 

  BATTERY CONTAINER

  Index: WAPOJ1

• 

  CABLE FOR BATTERY…

  Index: WAPRZLAD12SAM

• 

  OR-1 USB WIRELESS…

  Index: WAADAUSBOR1

• 

  C-3 CURRENT CLAMPS (Φ=52…

  Index: WACEGC3OKR

• 

  N-1 TRANSMITTING CLAMPS…

  Index: WACEGN1BB

• 

  NIMH BATTERY 4,8 V 4,2 AH

  Index: WAAKU07

• 

  TEST LEAD WITH BANANA…

  Index: WAPRZ002DZBB

• 

  PORTABLE LICENSE

  Index: WAADAKEY1

• 

  TEST LEAD 75 M, BLUE, FOR…

  Index: WAPRZ075BUBBSZ

• 

  TEST LEAD ON A REEL WITH…

  Index: WAPRZ100BUBBSZ

• 

  TEST LEAD ON A REEL WITH…

  Index: WAPRZ200BUBBSZ

• 

  TEST LEAD ON A REEL WITH…

  Index: WAPRZ200YEBBSZ

• 

  TEST LEAD 75 M, YELLOW,…

  Index: WAPRZ075YEBBSZ

• 

  TEST LEAD ON A REEL WITH…

  Index: WAPRZ100YEBBSZ

• 

  TEST LEAD 75 M, RED, FOR…

  Index: WAPRZ075REBBSZ

• 

  TEST LEAD ON A REEL WITH…

  Index: WAPRZ100REBBSZ

• 

  TEST LEAD ON A REEL WITH…

  Index: WAPRZ200REBBSZ

Data sheet

Manual