Máy đo điện trở cách điện Gossen Metrawatt M550S
 
 
1000V Digital Insulation Tester, Resistance Measurement - 10Ohm to 10 kOhm 
 
    - Test voltages in fixed increments, variable or as a ramp 50, 100, 250, 500, 1000 V
 
    - Polarization index (PI) and dielelectric absorption ratio (DAR)
 
    - Intelligent filter
 
    - Signalling of dangerous contact voltage
 
    - Acoustic signalling when limit value is exceeded
 
    - Detection of interference voltage in switch position OFF
 
    - Overvoltage protection - protects the instrument in the event of inadvertent connection to mains power
 
    - Fuse link for all resistance measuring ranges
 
    - New: Electronic fuse for protection of the low-resistance measurement RLO also protects the fuse link in the low-resistance measuring range in the event of faulty operation
 
    - One measuring point self-test with test resistance of 10 MΩ per EN 50110 / VDE 0105-100
 
 
 
 
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