Goldhome Hipot's Insulation Resistance Tester Supports Maintenance Of Water-Cooled Generators

Insulation Resistance Tester Plays Key Role in Water-Cooled Generator Maintenance

  Water-cooled generators are critical assets in the power sector, requiring regular insulation resistance testing to prevent failures and ensure long-term reliability. Wuhan Jinjiadian High-Voltage Electrical Co., Ltd. offers specialized insulation resistance testers designed specifically to meet the unique requirements of such systems. These devices help maintenance teams identify potential insulation issues at an early stage, promoting preventive maintenance and reducing the risk of unplanned downtime.

  Through regular diagnostic testing with insulation resistance testers, operators can assess the operating condition of generator windings and related components. Including such checks in maintenance schedules effectively improves the operational safety of the facility and extends the service life of the equipment. Jindian High-Voltage test equipment provides clear, useful data, allowing decision-makers to accurately monitor the condition of the generator.

Solving industry challenges through innovative design

  Water-cooled generators, which are vital to electrical grids and industrial facilities, face unique challenges when conducting insulation tests due to the effects of water polarization and strong electromagnetic interference on site. Traditional testers typically experience measurement inaccuracies when the resistance of the water collection pipe  falls below 30 MΩ, a situation that is typical in older equipment, according to industry testing protocols.

The HM2020 solves this problem by automatically compensating for the polarization potential of the water, ensuring accurate measurements even when the resistance from the base to the water collection pipe falls below 10 kΩ. The microcontroller-based 32-bit system provides a maximum test voltage of 2.5 kV and a short-circuit current of over 25 mA, allowing for rapid voltage stabilization for capacitive loads, 15 times more than the typical 1.6 mA short-circuit capacity of controllers.

Key Features Enhanced Usability in the Field

  Designed for both laboratory and field applications, the meter features a number of user-centric features:

• Dual Interface Display: 3 1/2 digit LCD display combined with an analog progress bar for real-time, lag-free tracking of capacitance measurement processes.

Smart data logging: Automatically measures and stores R15s, R60s, R10min values, as well as the absorption ratio (R60s/R15s) and polarization index (R10min/R1min), critical measurements for generators over 200 MW.

• Enhanced safety: Fully enclosed high-voltage modules with integrated protection resistors, as well as automatic discharge with real-time voltage monitoring (0 V confirmation ensures safe disconnection).
• Long-lasting reliability: Resists electromagnetic interference from UHV substations and operates with load resistors as low as 100 kΩ, covering a measurement range from 0.1 MΩ to 200 GΩ with an accuracy of ±(5% + 5 digits).

  As a leading Chinese manufacturer of high constant voltage testing equipment, Goldhome Hipot has leveraged decades of experience to adapt the HM2020 to global standards. The device complements the company's existing range of high-voltage testers, which are already trusted by national and international customers in the power sector.

Brief description of technical characteristics

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  If you need reliable diagnostic tools for water-cooled generators, take a look at the range of insulation resistance testers and corresponding high-voltage testing equipment from Wuhan Goldhome Hipot Electrical Co., Ltd.