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
   
 
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