• Test Voltages of 100/250/500/1000 VDC Insulation resistance measurements up to 20 GΩ 0 to 5000Ω Continuity Range Guard terminal to eliminate surface leakage current Hand-Cranked Large easy-to-read scale
  

Megger 210170 Extended Range Insulation Resistance Testers are the ideal instruments when high ranges are needed for measuring insulation resistance. It provides excellent test voltage regulation and an external guard terminal to eliminate surface leakage current from the measurement. The instrument is all electronic; it generates a regulated dc high voltage and use low-zero-drift, high-accuracy circuits, with high current sensitivity. Designed for portability, each is enclosed in a molded, impact-resistance, flame-retardant case. The instrument is protected for connection to power distribution systems up to 300 V Line-Ground and 500 V Line-Line for Installation Category III. This relates to transient overvoltage likely to be found in fixed installation wiring.