主页 接地电阻及土壤电阻率测试仪 SEW 4120 ER 三线数字式接地电阻测试仪

SEW 4120 ER 三线数字式接地电阻测试仪

Measuring ranges: 0~40Ω / 0~400Ω / 0~4kΩ / ±(2%rdg+2dgt)
resolution      
0-20Ω : 0.01Ω  
0-200Ω : 0.1Ω  
0-2000Ω : 1Ω
Measuring Earth voltage: 0-200 Vac / ±(1%rdg+2dgt)
Dimensions: 250(L) × 190(W) × 110(D)mm
Weight: 1500g
Power source: 1.5V (AA) × 8  

Detail
列印
  FEATURES
● Capable of measuring earth resistance and earth voltage.
● 2mA measuring current permits the testing of earth resistance without
    tripping earth leakage current breakers in the circuit under test.
● The leads are supplied as standard accessories for simplified
    two-wire measuring system.
● Battery operated.
● Data hold function.
● Battery test indication.
● Calibration performed with supplied test leads.
 
  SPECIFICATIONS
     
 
 Measuring ranges  Earth resistance 
 0-20Ω / 0-200Ω / 0-2000Ω
 Earth voltage 
 0-200 Vac(40-500Hz)
 Accuracy  Earth resistance 
 ±(2%rdg+2dgt) at 200/2000Ω
 ±(2%rdg+0.1Ω) at 20Ω
 Earth voltage  ±(1%rdg+2dgt)
 Earth resistance
 resolution		  0-20Ω : 0.01Ω  
 0-200Ω : 0.1Ω  
 0-2000Ω : 1Ω
 Measuring system  Earth Resistance by constant
 current inverter 820Hz approx. 2mA
 Display  3½ digit (2000 counts)
 Open circuit
 indication		  LED will be unlit
 Low battery
 indication		  “   “symbol appears  on the display
 Data hold
 indication		  “   “symbol appears on the display
 Over range
 indication		  “1”(MSD)
 Dimensions  250(L) × 190(W) × 110(D)mm
 Weight
 (battery included)		  Approx. 1500g
 Power source  1.5V (AA) × 8  
 Safety standards  EN 61010-1 CAT III 300V
 IEC 61557-1 IEC 61557-5
 EN 61326-1
   
 
Tags:5V AC)199Earth Resistance Testers 3 Wire (Digital) - SEW 4120 ER (1999Ω
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