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Megger MFM10 Sheath Fault Location System
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Product Details
Brand:
Megger
Power-on Test Range:
0 ... 10 kV DC, bipolar.
Power-on Test Accuracy at 50 Hz:
±0.1%.
Dimentions:
500 x 457 x 305 mm.
Weight:
25 kg.
Power :
88 V ... 264 V, 50 / 60 Hz., Built-in NiMH battery (340 Wh).
Operating temperature:
−25 °C ... +55 °C.
Storage temperature:
−40 °C ... +70 °C.
Megger MFM10
The Megger MFM10 Sheath Fault Location System is a sophisticated tool designed for the efficient testing, prelocation, and pinpointing of sheath faults in underground cables. This system is essential for electrical utilities and maintenance teams tasked with ensuring the integrity of cable sheaths, which are crucial for the safe operation of electrical networks.
Key Features
- Intuitive Operation: The MFM10 features a user-friendly, menu-driven interface that simplifies the testing process. Data entry is facilitated by a rotary encoder and a touch screen, allowing for quick adjustments and settings.
- High Voltage Testing: This system is equipped with a powerful 10 kV DC source that can operate in both positive and negative polarities. This capability allows for comprehensive testing of high-voltage cables while effectively eliminating external thermoelectric and galvanic influences.
- High Current Capability: The MFM10 can deliver high currents of up to 750 mA, which is beneficial for "burning" difficult cable faults. This feature enhances the ability to locate and identify faults that may not be easily detectable through standard testing methods.
- Automatic Measurement and Protocolling: The system automatically measures and evaluates test results, providing detailed protocols that can be easily generated using the integrated MeggerBook RE software. This functionality streamlines reporting and documentation processes.
- Robust Design: Housed in a solid IP53-rated PELI trolley case, the MFM10 is designed for durability and ease of transport. Its construction ensures protection against dust and moisture, making it suitable for various operational environments.
- Integrated Discharge Function: The system includes an integrated discharge capability for capacitive loads up to 10 μF, ensuring safe operation after testing.
Applications
The Megger MFM10 is widely used across multiple applications:
- Cable Sheath Testing: It is primarily utilized for testing the integrity of cable sheaths in underground installations, helping to identify faults that could lead to cable failures.
- Preventive Maintenance: Utilities and maintenance teams use this system as part of their preventive maintenance programs to monitor cable conditions over time, ensuring reliability and safety in electrical distribution networks.
- Fault Location: The MFM10 assists technicians in pinpointing sheath faults quickly and accurately, reducing downtime during repairs and enhancing overall operational efficiency.
In summary, the Megger MFM10 Sheath Fault Location System is an essential instrument for professionals involved in cable maintenance and fault diagnosis. Its combination of advanced features, robust design, and user-friendly interface makes it a reliable choice for ensuring the safety and performance of electrical installations.
Megger MFM10 Specifications
| Power Source | |
| Functions | Testing, prelocation and pinpointing, burning, direct resistance measurement, voltage and current limiter, quick event/transient recognition. |
| Output voltage | 0 ... 10 kV DC, bipolar. |
| Output current | 750 mA at 0.4 kV |
| 200 mA at 0.5 ... 1.5 kV | |
| 60 mA at 5 kV | |
| 30 mA at 10 kV. | |
| Maximum permitted capacity of the test object | 10 μF. |
| Test voltage | 0 ... 10 kV. |
| Prelocation | |
| Method | Voltage drop method (fully automatic). |
| Measuring accuracy | ±0.1%. |
| Pinpointing | |
| Voltage | 0 ... 10 kV DC, pulsed. |
| Duty cycle | Selectable. |
| Pulse rates | 0.5:1 / 1:2 / 1.5:0.5 / 1.5:3.5 |
| 4.8 Hz ("vLoc" A-frame of VivaxMetrotech) | |
| 3 Hz ("SFL2" A-frame of Metrotech) | |
| Audio frequency (devices with 'AF' option only) | f = 8.44 kHz, Uo = 100 VRMS, P = 7 Wpeak (at 500 Ω). |
| Power | |
| Power supply (rated voltage) | 88 V ... 264 V, 50 / 60 Hz. |
| DC supply (for charging only) | 12/24 V DC. |
| Battery | Built-in NiMH battery (340 Wh). |
| Operating time whilst battery powered | approx. 2 hours |
| 1 The value depends largely on the operating conditions. The value specified applies to continuous pinpointing with a rate of 1:3 at an output of 300 W. | |
| Power consumption | max. 500 VA. |
| General Specifications | |
| Display | 320 x 240 pixel LCD, LED backlight. |
| User Interface | Rotary encoder & touch screen. |
| Memory | 2 GB flash memory for system and user data. |
| Data logging | with a USB stick. |
| Operating temperature | −25 °C ... +55 °C. |
| Storage temperature | −40 °C ... +70 °C. |
| Protection class | I (protective earthing). |
| Protection rating | IP53 (with closed lid). |
| Dimensions (W x H x D) | 500 x 457 x 305 mm. |
| Weight | 25 kg. |
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Megger MFM10 Sheath Fault Location System
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