主页 接地电阻及土壤电阻率测试仪 SEW 2120 ER 三线数字式接地电阻测试仪

SEW 2120 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: 210(L) × 210(W) × 100(D)mm
Weight: 1395g
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.
● 0Ω adjustment.
● Battery operated.
● Data hold function.
● Low battery 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)
 or ±0.1Ω,  which is greater
 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)
 0Ω adjustment  ˇ
 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  210(L) × 210(W) × 100(D)mm
 Weight
 (battery included)		  Approx. 1395g
 Power source  1.5V (AA) × 8    
 Safety standards  IEC/EN 61010-1 CAT III 200V.
 IEC 61557-1 IEC 61557-5
 EN 61326-1
Tags:Earth Resistance Testers 3 Wire (Digital) - SEW 2120 ER (2000Ω200V AC)
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