The Fluke 1555 Insulation Resistance Tester is a specialized electrical testing instrument used to measure the insulation resistance of wiring, cables, motors, transformers, and other electrical equipment. It is widely used in maintenance, troubleshooting, and quality control applications to ensure the integrity and safety of electrical insulation systems.

Here are some key features and capabilities of the Fluke 1555 Insulation Resistance Tester:

1. Insulation Resistance Measurement: The Fluke 1555 is designed to accurately measure insulation resistance up to 2 teraohms (2,000,000 megohms). It utilizes high voltage test voltages, typically up to 10,000 V DC, to assess the insulating properties of electrical equipment and identify potential issues or faults.

2. Diagnostic Tools: The tester provides various diagnostic tools to aid in interpreting insulation resistance measurements. These include step voltage testing, which allows the detection of breakdown voltage thresholds, and polarization index (PI) testing, which identifies insulation degradation trends over time.

3. Automatic Testing: The Fluke 1555 offers programmable test setups and automatic test sequences to simplify and streamline insulation resistance testing. It enables users to configure specific test parameters and perform comprehensive insulation tests quickly and efficiently.

4. Safety Features: The instrument incorporates safety features to ensure operator protection during high voltage testing. This may include indicators for voltage presence, automatic discharge of capacitance, and provisions for using guard leads to minimize the effect of surface leakage currents.

5. Data Logging and Reporting: The tester often includes built-in memory for storing test results, allowing for data logging and subsequent analysis. It may also have communication capabilities (such as USB or Bluetooth) to transfer test data to a computer for further processing and generating comprehensive test reports.

6. User-Friendly Interface: The Fluke 1555 typically features a user-friendly interface with a clear LCD display and intuitive controls. This makes it easy to navigate through test menus, view results, and configure the instrument according to specific testing requirements.