Megger MFT1711 Multifunction Tester User Manual

1. Introdución

The Megger MFT1711 is an advanced entry-level multifunction tester designed to meet the testing requirements of BS7671. It is an improved version of the Megger MFT1710, suitable for testing single-phase electrical installations in both domestic and commercial environments. This instrument is ideal for Part-P installers performing smaller electrical installation certificates and for experienced electro-inspectors conducting health reports for electrical installations.

Certified to IEC 61010 CATIV 300V, the MFT1711 allows for safe testing of all parts of a low voltage network up to the supply transformer, while being robust enough to withstand accidental misuse and voltage peaks. Its ergonomic design facilitates operation whether hung on the ground, a conductor board, or around the neck. The device features two "test" and "lock" buttons, accommodating both right-handed and left-handed users. Built for frequent use in demanding environments, the MFT1711 is protected by a rubber casing and boasts an IP54 rating for resistance against water and dust.

All test settings are easily programmable using two color-coded rotary switches. Measurements are displayed on a sharp, large backlit screen with a patented digital/analog arc for fluctuating readings and a dual-digital display for precise values.

2. Características clave

• Beginner-friendly design: Simple user interface with easy access to all necessary tests.
• Fully automatic RCD test: Streamlined testing of Residual Current Devices.
• Aplicación versátil: Suitable for commercial, industrial, and domestic low voltagsistemas e.
• IEC 61010 CATIV 300V certified: Ensures safety for testing up to the supply transformer.
• Deseño ergonómico: Features dual "test" and "lock" buttons for ambidextrous use.
• Construción robusta: Goma casing and IP54 rating for protection against water and dust.
• Pantalla clara: Large, backlit screen with digital/analog arc and dual-digital display.

3. Que hai na caixa

The Megger MFT1711 Multifunction Tester package typically includes the following items:

• Megger MFT1711 Multifunction Tester unit
• Test leads (red, green, blue)
• Clips de cocodrilo
• Sondas de proba
• Mains plug test lead
• Maletín de transporte
• Correa para o pescozo
• 6 AA batteries (pre-installed or included separately)
• Guía de inicio rápido
• Certificado de calibración

Image: The Megger MFT1711 Multifunction Tester shown with its included accessories, including test leads, probes, crocodile clips, mains plug lead, and the protective carrying case.

4. Configuración

4.1. Instalación da batería

The Megger MFT1711 requires 6 AA batteries for operation. These are typically included with the device. To install or replace batteries:

1. Asegúrate de que o dispositivo estea apagado.
2. Localice o compartimento da batería na parte traseira da unidade.
3. Abra a tapa do compartimento da batería.
4. Insira as 6 pilas AA, respectando a polaridade correcta (+/-) tal como se indica no interior do compartimento.
5. Pecha a tapa do compartimento da batería de forma segura.

4.2. Initial Power On and Self-Test

Upon first power-on or after battery replacement, the MFT1711 may perform a self-test. Ensure the rotary switches are in the OFF position before powering on.

1. Turn the main rotary switch from OFF to any measurement function (e.g., V).
2. The display will illuminate, and the device will perform a brief self-check.
3. Once the self-check is complete, the device is ready for use.

4.3. Conexión dos cables de proba

Always ensure the correct test leads are connected to the appropriate terminals for the desired measurement. Refer to the specific test section for detailed connection instructions.

Imaxe: Primeiro plano view of the Megger MFT1711's front panel, showing the large digital display, the two main rotary switches for function selection, and the test buttons.

5. Instrucións de funcionamento

The Megger MFT1711 features intuitive controls with two main rotary switches for selecting measurement functions and ranges. The large backlit display provides clear readings.

5.1. Selección de funcións

Use the left rotary switch to select the primary measurement category (e.g., Insulation, Continuity, Loop/RCD). Use the right rotary switch to select specific ranges or sub-functions within that category.

5.2. Realización dunha proba

Once the desired function is selected and test leads are connected:

1. Ensure the circuit under test is de-energized if required by the test type (e.g., Insulation, Continuity).
2. Connect the test leads to the circuit points as per the specific test procedure.
3. Press and hold the "TEST" button to initiate the measurement. For continuous measurements or hands-free operation, press the "LOCK" button.
4. Observe the reading on the display.
5. Release the "TEST" button or press "LOCK" again to stop the measurement.

5.3. Funcións de medición específicas

Detailed instructions for each measurement function are provided in the full user manual. Below is a brief overview:

• Insulation Resistance (MΩ): Measures the resistance of insulation between conductors or between conductors and earth. Select appropriate test voltage (250V, 500V, 1kV).
• Continuity (Ω): Measures the resistance of protective conductors and bonding. Typically uses a low test current.
• Loop Impedance (Z): Measures the impedance of the earth fault loop. Essential for verifying protective device operation.
• RCD Test (RCD(mA)): Tests the tripping time and current of Residual Current Devices. Features fully automatic RCD testing.
• Voltage (V) and Frequency (Hz): Medidas AC/DC voltage e frecuencia.

6. Mantemento

6.1. Limpeza

To maintain the integrity and appearance of your MFT1711:

• Limpe o exterior da unidade cun suave, damp pano.
• Do not use abrasive cleaners or solvents, as these may damage the casing ou pantalla.
• Ensure no moisture enters the device through the terminals or battery compartment.

6.2. Battery Care and Replacement

Regularly check the battery level indicator on the display. Replace batteries promptly when low to ensure accurate measurements and prevent damage from battery leakage.

• Se o dispositivo non se vai usar durante un período prolongado, retire as baterías para evitar fugas.
• Elimina as baterías usadas segundo a normativa local.

6.3. Almacenamento

Store the MFT1711 in its protective carrying case in a cool, dry place, away from direct sunlight and extreme temperatures.

6.4. Calibración

For professional use, it is recommended to have the Megger MFT1711 calibrated annually by an authorized service center to ensure continued accuracy and compliance with standards. Refer to the included Certificate of Calibration for details on the next recommended calibration date.

7 Solución de problemas

If you encounter problems not listed here or if the suggested solutions do not resolve the issue, please contact Megger customer support or an authorized service center.

8. Especificacións

9. Garantía e soporte

Megger products are known for their reliability and quality. The MFT1711 typically comes with a manufacturer's warranty covering defects in materials and workmanship. Please refer to the warranty card or documentation included with your product for specific terms, conditions, and duration of the warranty.

For technical support, service, or warranty claims, please contact Megger customer service directly. Contact information can usually be found on the Megger official websitio ou na documentación do produto.

Megger Official Websitio: www.megger.com

When contacting support, please have your product model number (AVO/MFT1711) and serial number (if applicable) ready.