Megger MJ159 (212159) Megohmmeter/Insulation Tester, Hand-Cranked

Description

The Megger MJ159 (model number 212159) is a hand-cranked, analog megohmmeter and insulation tester designed for reliable operation in the field without the need for batteries. It provides stable test voltage regardless of the cranking speed, ensuring accurate measurements. 

Key features

• Hand-cranked power: An internal low-voltage AC generator provides power, so you never have to worry about running out of batteries.
  Selectable test voltages: It offers four DC test voltages: 100 V, 250 V, 500 V, and 1000 V.
  
• Dual measurement ranges: The MJ159 can measure insulation resistance up to 2,000 MΩ and a lower resistance range up to 5,000 Ω.
  
• Guard terminal: A third guard terminal helps to eliminate the effects of surface leakage current from the measurement, ensuring more accurate readings, particularly in damp or dirty conditions.
  
• Analog display: The durable analog display with a taut-band suspension is more resistant to extreme temperatures compared to LCD screens, making it suitable for harsh environments.
  
• Safety features: When connected to a circuit, the MJ159's AC voltage range will immediately indicate if the circuit is still live, preventing testing on a non-de-energized circuit. After a test on a capacitive circuit (like a long cable), the meter shows when the stored voltage has safely discharged.