臺灣標(biāo)準(zhǔn)電機(jī)SEW儀器儀表--ST-1520 Earth Resistance Testers 3 Wire Digital
    
                              
                              
    
                                
    
                                  
    
                                    
    
                                      
                                        
    
                                          
    
                                            
                                             
                                              
                                                  
                                              
                                          
    
                                          
    
                                             
                                          
    
                                          
    
                                            
                                              
    
                                                
    
                                                  ST-1520   Earth Resistance Testers
                                                    
                                                    
                                                    
    3 Wire (Digital)
                                                     
                                                        
                                                      		
                                                
    
                                                
    
                                                  ST-1520
                                                
    
                                              
    
                                                		
                                            
                                              
    
                                                
                                                
    
                                                  
                                                     FEATURES
                                                
    
                                                
    
                                                   
                                                
    
                                                
                                                
                                                
    
                                                   High quality Taut Band movement.
                                                
    
                                                
                                                
                                                
    
                                                   Capable of measuring earth voltage (Vac).
                                                
    
                                                
                                                
                                                
    
                                                   The timer operates automatically for about three to five minutes when the "PUSH BUTTON SWITCH" and "TIMER ON BUTTON" are pressed together. This will keep test "ON" for the duration of the timer.
                                                
    
                                                
                                                
                                                
    
                                                   Battery life indication.
                                                
    
                                                
                                                
                                                
    
                                                   Battery replacement can be easily made without removing the caring case.
                                                
    
                                                
                                                
                                                
    
                                                    CAT II 30V.
                                                
    
                                                
                                                
                                                
    
                                                   Calibration performed with supplied test leads.
                                                
    
                                                
                                                
                                                
                                                
                                                
                                              
    
                                                		
                                          
    
                                          
    
                                            
                                              
    
                                                
                                              
    
                                                		
                                          
    

                                          
    
                                            
                                              
    
                                                
                                                
    
                                                   SPECIFICATIONS
                                                  
                                                
    
                                                
    
                                                   
                                                
    
                                                
                                                
                                                
    
                                                  Measuring Ranges
                                                  Earth Resistance : 0-20 Ohm/0-200 Ohm/0-2000 Ohm
                                                
    
                                                
                                                
                                                
    
                                                   
                                                  Earth Voltage : 0-200V AC (40-500Hz)
                                                
    
                                                
                                                
                                                
    
                                                  Accuracy
                                                  Earth Resistance : +/- (2%rdg+2dgt) or +/- 0.1 Ohm, which is greater
                                                
    
                                                
                                                
                                                
    
                                                   
                                                  Earth Voltage : +/- (1%rdg+2dgt)
                                                
    
                                                
                                                
                                                
    
                                                  Earth Resistance Resolution
                                                  0-20 Ohm (0.01 Ohm)
                                                
    
                                                
                                                
                                                
    
                                                   
                                                  0-200 Ohm (0.1 Ohm)
                                                
    
                                                
                                                
                                                
    
                                                   
                                                  0-2000 Ohm (1 Ohm)
                                                
    
                                                
                                                
                                                
    
                                                  Measuring System
                                                  Earth Resistance by constant current inverter 820 Hz approx. 2mA
                                                
    
                                                
                                                
                                                
    
                                                  Low Battery Indication
                                                  "B" symbol appears on the diaplay
                                                
    
                                                
                                                
                                                
    
                                                  Data Hold Indication
                                                  "DH" symbol appears on the display
                                                
    
                                                
                                                
                                                
    
                                                  Over Range Indication
                                                  "1" (MSD)
                                                
    
                                                
                                                
                                                
    
                                                  Open Circuit Indication
                                                  LED will be unlit
                                                
    
                                                
                                                
                                                
    
                                                  Display LCD
                                                  LCD 3-1/2 digit (2000 counts)
                                                
    
                                                
                                                
                                                
    
                                                  Power Source
                                                  1.5V (SUM-3)  x 6 Type AA
                                                
    
                                                
                                                
                                                
    
                                                  Dimensions
                                                  163(L) x 100(W) x 50(D) mm
                                                
    
                                                
                                                
                                                
    
                                                  Weight
                                                  Approx. 480g (battery included)
                                                
    
                                                
                                                
                                                
    
                                                  Accessories
                                                  Test leads (AL-36 : red-15m, yellow-10m, green-5m)
                                                
    
                                                
                                                
                                                
    
                                                   
                                                  Auxiliary earth bars
                                                
    
                                                
                                                
                                                
    
                                                   
                                                  Heavy-duty case
                                                
    
                                                
                                                
                                                
    
                                                   
                                                  Instruction manual, batteries 
                                                
    


                                       
                                          
                                        
    
                                          		
                                    
    
                                  
    

    
  
    
    特 點(diǎn)
  
    
  
    
    ● 量測接地電阻(Ω)和接地電壓(ACV)。
    
      ●   量測電流僅有2mA，不易造成漏電斷路器的跳脫。
    
      ● 同時按下"PUSH ON"和"TIMER ON"可作長時間的量測，
    
      約5分鐘後，自動關(guān)機(jī)，可避免浪費(fèi)電源。
    
      ● 接線正確，在量測時紅燈(LED)會顯示。
    
      ● 數(shù)值鎖定功能。
    
      ● 方便使用、攜帶和保存。 
    
      ● 使用電池操作。
    
      ● 
    
       CAT III 200V 
    
           		
  
    
  
    
    
     
    		
  
    
  
    
     規(guī) 格   (23°C±5°C ＜80%R.H.)
  
    
  
    
    
      
    
        
          
    
            
    
              
                
                
                
                  
    
                    量測檔位
                    接地電阻 : 0~20Ω/0~200Ω/0~2000Ω
    
                      接地電壓 : 0-200V AC(40-500Hz)    		
                  
    
                  
    
                    準(zhǔn)確度
                    接地電阻 : ±(2%讀值+2位數(shù))或±0.1Ω
    
                      接地電壓 : ±(1%讀值+2位數(shù))    		
                  
    
                  
    
                    接地電阻解析度
                    0-20Ω : 0.01Ω 
    
                      0-200Ω : 0.1Ω 
    
                      0-2000Ω : 1Ω    		
                  
    
                  
    
                    量測系統(tǒng)
                    820Hz 2mA 定電流
                  
    
                  
    
                    顯示器
                    液晶顯示(LCD)3位(Z大讀值1999)
                  
    
                  
    
                    電源不足指示
                    顯示符號"B"
                  
    
                  
    
                    數(shù)值鎖定指示
                    顯示符號"DH"
                  
    
                  
    
                       外形尺寸
                    163(長)×100(寬)×50(高)mm
                  
    
                  
    
                       重量
                    約480克(含電池)
                  
    
                  
    
                    使用電池
                    1.5V(AA)×6(顆)