1625

Users Manual

General

Microprocessor controlled universal earth resistance meter with fully auto- mated measuring frequency selection process as well as automatic testing of probe- and auxiliary earth electrode resistances and possible interference volt- ages as per DIN IEC61557-5/EN61557-5.

Measurement of interference voltage (UST)

Measurement of interference frequency (FST)

Measurement of probe resistance (RS)

Measurement of auxiliary earth electrode resistance (RH)

Measurement of earthing resistance 3pole, 4pole, (RE) with or without using the external clip-on current transformer for selective measure- ment of single earthing branches in mesh operated earthing systems

A

Resistance measurement 2pole with AC voltage (R~)

Resistance measurement with DC voltage 2pole, 4pole, (RF)

With its various possibilities of measurement and the fully automated measur- ing sequence control (incl. automatic frequency control AFC), this instrument offers the latest measuring technology in the field of earthing resistance meas- urements. By means of the selectable limit input with visual and accoustical confirmation/error message and with the code programmable and customer defined special functions, e.g. measuring voltage 20 V (for agricultural sys- tems), earthing impedance R* (measuring frequency 55 Hz) switched on or off etc., these instruments are individually programmable for use as a simple meter as well as a high end fully automated measuring device.

Additional Accessories

An external current transformer with a transformation ratio between 80 and 1200:1 for the measurement of a single branch in mesh operated earthing sys- tems is available as an option and enables the user to measure on high voltage pylons without seperating the overhead earth wires or earth strips at the bottom of the pylons and also to measure lightning protection systems without seperat- ing the individual lightning protection wires.

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Fluke 1625 user manual General, Additional Accessories

1625 specifications

The Fluke 1625 is a versatile and essential tool in the realm of insulation testing, primarily aimed at electricians, maintenance professionals, and equipment specialists. Throughout its design, Fluke has incorporated a range of features and technologies intended to enhance testing efficiency, accuracy, and user experience, making the 1625 a standout choice for those in need of reliable insulation measurement tools.

One of the key features of the Fluke 1625 is its ability to perform insulation resistance testing with several voltage settings. The device offers test voltages of 250V, 500V, and 1000V, making it adaptable for different applications, including low-voltage and high-voltage systems. This flexibility is paramount in ensuring that technicians can perform tests on a wide variety of electrical systems without needing multiple devices.

The 1625 also boasts an impressive insulation range of up to 4 GΩ, providing the capability to measure insulation resistance accurately across a spectrum of installations. A notable technology integrated into the unit is the automatic discharge function, which ensures that any stored energy in capacitive components is safely released after testing, enhancing the safety of operations.

Furthermore, the Fluke 1625 includes a patented 'Insulation Diagnostic' feature that assists users in identifying problematic areas in an electrical system. This feature helps professionals determine whether insulation is adequate, helping to prevent potential failures, accidental shorts, and system downtimes.

In addition to insulation resistance testing, the Fluke 1625 also supports other functionalities, including continuity testing and low-resistance measurements. This multi-functional capability streamlines operations, allowing technicians to conduct multiple tests without switching devices, resulting in increased productivity.

The device is designed with user-friendliness in mind, featuring an intuitive interface complete with large buttons and a clear display. This makes it easier for users to navigate through different testing modes and review results. To further enhance usability in challenging environments, the 1625 has a rugged, durable design, ensuring it can withstand the rigors of job sites.

Another significant characteristic of the Fluke 1625 is its ability to log test results for further analysis. It can store up to 99 datasets, which can be later reviewed or downloaded for reporting purposes. This data management capability is crucial for maintaining records, fulfilling compliance requirements, and improving operational efficiencies.

In conclusion, the Fluke 1625 is a robust and comprehensive insulation tester that incorporates essential features and advanced technologies. With its versatility, safety mechanisms, and user-friendly design, it stands out as an indispensable tool for electrical professionals committed to ensuring system reliability and safety.