MEGGER MJ159-MJ359 and 210170-Utility Locating System

Portable, self-contained instruments designed to give rapid and accurate measurements. Four of the models feature an analog display having four selectable test voltages of 100, 250, 500 and 1000 V dc, measuring insulation resistance up to 2000 MΩ and an ohm range to 5000 ohms. The other model has four test voltages of 50, 100, 250 and 500 V dc measuring insulation resistance up to 1000 MΩ.

Key Features

The Megger MJ159, MJ359, and 210170 are advanced utility locating systems designed to provide highly accurate and reliable insulation resistance testing. These instruments are crafted to meet the rigorous demands of testing high-voltage electrical systems and are ideal for various applications where high resistance measurement ranges are essential.

• Excellent Voltage Regulation: These instruments maintain precise control over test voltage, ensuring accurate measurements even under varied load conditions. This feature is crucial when performing tests that require consistency and reliability.
• External Guard Terminal: The inclusion of an external guard terminal helps eliminate the influence of surface leakage currents from the measurement, which can significantly distort the readings in insulation testing.
• Highly Sensitive and Accurate: The devices feature low-zero-drift, high-accuracy circuits with high current sensitivity, making them capable of detecting even minimal changes in insulation resistance.
• Robust and Portable Construction: Each unit is housed in a molded, impact-resistant, flame-retardant ABS plastic case, complete with a fold-down handle for enhanced portability and durability.

MEGGER MJ159-MJ359 and 210170-UTILITY LOCATING SYSTEM Specifications:

• Insulation Resistance:

MJ159,MJ359:0.1 Ω – 2000 MΩ

210170:0 to 20,000 MW

• Accuracy:

MJ159,MJ359:±1.25% of fsd on a 2.8 in. (71.1mm) arc length

210170:±3% of scale length on a 3.08 inch arc length

• Nominal Test Voltages:DC: 100 V, 250 V, 500 V, 1000 V
• Applied test voltage accuracy: 250 V,500 V, 1000 V ranges:

MJ159,MJ359:+30%, -0% max.

210170:+5%, -5% max.

• Applied test voltage accuracy: 100 V range:

MJ159,MJ359:+40%, -0% max.

210170:+5%, -5% max