SEW 1820 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: 170(L) × 165(W) × 92(D)mm
Weight: 1040g
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.
● 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)
 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  170(L) × 165(W) × 92(D)mm
 Weight
 (battery included)
 Approx.1040g
 Power source  1.5V (AA) × 8    
 Safety standards  EN 61010-1 CAT II 300V
 IEC 61557-1 IEC 61557-5
 EN 61326-1
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