Megger MGFL100 Battery Ground Fault Locator

Megger MGFL100 Battery Ground Fault Locator

The Megger MGFL100 Battery Ground Fault Locator is a portable ground fault locator designed for use on ungrounded DC and AC systems, including DC battery networks and protected IT installations. It quickly and accurately identifies ground faults without requiring a system shutdown, ensuring minimal disruption to operations. By distinguishing between resistive and capacitive leakage, the MGFL100 only alarms when a true fault is present, eliminating false indication caused by system capacitance.

The MGFL100 is engineered with safety and reliability in mind, and delivers fault resistance measurement, system capacitance, and both real and reactive current readings. Its rugged design, fused test leads, and compliance with CAT IV 600V safety standards make it suitable for demanding environments. With simple operation, clear LCD displays, and both mains and rechargeable battery power options, the MGFL100 provides and effective solution for maintaining critical power systems and preventing downtime.

The MGFL100 operates by injecting a low-frequency signal into the system under test, allowing accurate tracing of fault currents without tripping protective devices. Its output is adjustable up to 50V and 160mA, providing the flexibility needed to test a wide range of system voltages and fault conditions. The receivers, working in conjunction with the transmitter, enables pinpoint fault location by detecting the test signal along the conductor path, ensuring precise and reliable results in the field.

Designed for practicality, the MGFL100 is powered either by its internal rechargeable Li-ion battery or by a universal AC supply, supporting extended use with up to four hours of battery operation. Both the transmitter and receiver are equipped with clear LCD displays for easy interpretation of measurements, while the robust IP51-rated housing ensures durability in tough environments. Lightweight and portable, the MGFL100 simplifies ground fault location testing, reduces downtime, and enhances system reliability across industrial, utility, and mission-critical applications.

Megger part number: MGFL100

Key Features

• Locates ground faults on ungrounded AC and DC systems up to 600 V without system shutdown
• Differentiates true resistive faults from capacitive leakage to avoid false alarms
• Measures fault resistance, system capacitance, and real/reactive current
• Adjustable output up to 50 V and 160 mA with low-frequency 5.12 Hz signal for precise tracing
• Clear LCD displays on transmitter and receiver for easy fault location
• Powered by internal rechargeable Li-ion battery (≈4 hours) or universal AC supply
• Rugged IP51-rated housing for durability in harsh environments
• Fused test leads and CAT IV 600 V safety rating for operator protection
• Lightweight and portable design for field use