Megger MGFL100 Battery Ground Fault Locator

Product Highlights

The MGFL100 locates ground faults on ungrounded DC and AC systems, DC battery systems, as well as protected IT networks. The MGFL100 alarms when the real fault is found, while automatically distinguishing between real fault current and reactive current drawn by stray system capacitance.

The MGFL100 measures the ground fault resistance, the system capacitance, the real fault current, and the reactive leakage current. It also locates high impedance ground faults due to water ingress, as well as ground faults on systems with high leakage current. The MGFL100 makes locating the ground fault fast and easy by alarming when the circuit with a real ground fault is located. No complicated tuning out of noise or capacitance is required. Easily trace the fault with the lightweight transmitter and receiver. Set both password protected voltage and current limits to ensure you never put too much current in your system.

Specially protected IT networks, such as those found in hospitals, are designed in such a way that any contact with a voltage carrying line is harmless; in the event of a short to earth, protection reduces current flow to zero. Important control, signal and supply systems, such as those for railway installations, power plants or other industrial facilities, are designed to be potential-free and are monitored by earth fault indicators in order to ensure safe and uninterrupted operation. Short-to-ground faults in IT networks, control lines or, for example, signal lines in railways are referred to as earth faults.

While a single earth fault will not disrupt the service, a second earth fault carries a high risk of partial or complete installation breakdown. For this reason, any earth fault must be located and repaired as fast as possible. The MGFL100 allows tracing of these faults by directly coupling to the line. This can be done either off line or on line using a coupling filter.

Features

• Alarms when the real fault is identified
• Direct measurement of resistance and stray capacitance
• Direct measurement of fault current and leakage current
• Adjustable current and voltage limits
• Powered off AC or internal battery
• Locates faults up to 400 kΩ
• Locate faults on AC or DC systems
• Operates on systems up to 600 V
• Direct measurement of: (No Tuning)
• Fault resistance
• Fault current
• Leakage capacitance
• Leakage current
• Alarms on circuit with a real ground fault
• Fused leads (ARC flash safety)
• Adjustable current and voltage limits (No breaker tripping)
• Save and Recall of measurement (Always have a reference)
• Locate faults on AC or DC systems (Versatile)

Applications

• Ungrounded (DC) Battery Strings
• Substations
• Railway
• (AC) IT Networks
• Hospitals
• Railways
• Maritime
• Industrial Facilities