Máy đo điện trở cách điện Gossen Metrawatt M550N
1000V Digital Insulation Tester, Test voltage: 250 to 1000 V
    - DIN VDE 0100
 
    - ÖVE-EN 1 (Austria)
 
    - SEV 1000 (Switzerland)
 
    - Regulations specific to other countries as well.
 
    - Insulation measurement per EN 61557-2 / VDE 0413 part 2
 
    - Low-resistance measurement per EN 61557-4 / VDE 0413 part 4
 
    - Voltage testing and measurement up to 1000 V
 
    - Measurement category 300 V CAT IV / 600 V CAT III