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   12
  2016 January  

     Starmeter Instruments
               Newsletter

Earth Resistance Clamp Meter ST 2301

Functional Characteristics
  • 0.01Ω low-resistance high-precision measurement 
  • 0.001Ω high resolution
  • 99 groups of resistance measurement date can be stored 
  • Limit alarm function, which can set the alarm values within the range of 1Ω-100Ω
  • Leakage current and the current 1mA-30A of the neutral line 
  • Large-caliber 45mm×32mm precise measuring probe
  • Digital measurement,automatic shift, simple to operate
  • The jaws have double-layer insulation protection, which strengthens the anti-interference performance
  • Non-contact measurement improves the measurement safety
  • Single measuring time is 1s, which embodies the rapidity of the measurement
  • Current overload display,>30A RMS, which displays symbol "OL
 
Technical Specification
  • Test voltage: 3700V
  • Electric clearance: 6.5mm (meet IEC1010 double insulationCATII 600V/CAT.III300V)  
  • Electric shock resistance: EC1010-1
  • Overload limit: normal current 30A RMS
  • Mean consumption: 50mA
  • Range: automatic  
  • Display type: 4 digits,9999 counting, liquid crystal display
  • Power shortage: display symbol
  • Power supply: 9V 6F22 
  • Single measurement time: 1s 
  • Working temperature: -10℃ to 50℃ (14℉ to 122℉)
  • Storage temperature: -20℃ to 60℃ (-4℉ to 140℉) 
  • Diameter of jaw: ф32mm or 45mm×32mm
  • Outline size: 54mm×104mm×276mm
  • Total weight: about 1050g  (include battery)
  Range   Resolultion Accuracy 
Resistance
measurement 		 0.01Ω to 0.99Ω
1.0Ω to 9.99Ω
10Ω to 99.9Ω
100Ω to 199.9Ω
200Ω to 400Ω
400Ω to 500Ω
500Ω to 1200Ω		 ±(1.5%+0.01Ω)
±(1.5%+0.1Ω)
±(2.0%+0.3Ω)
±(3.0%+1Ω)
±(6.0%+5Ω)
±(10%+10Ω)
about 20%		 0.001Ω
0.01Ω
0.1Ω
1Ω
5Ω
10Ω
20Ω
Current
Measurement		 100mA
300mA
1A
3A
10A
20A
30A		 ±(2.5%+1mA)
±(2.5%+2mA)
±(2.5%+0.003A)
±(2.5%+0.01A)
±(2.5%+0.03A)
±(2.5%+0.05A)
±(2.5%+0.5A)
 0.1mA
0.3mA
0.001A
0.003A
0.01A
0.03A
0.03A

 Field application
1:  Test of power transmission line (iron tower)  2: Test of grounding resistance of lightning rods 
   
3: Power protection of factories
 
4: Application of faraday cage protection system
 
5: Test of grounding resistance of oil grooves

6:  Application of faraday cage protection system
 
7: Application of gas stations
 


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