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HYDA Insulation Resistance Tester for Water-Cooled Generator Stator Windings

Designed for Water-Cooled Generator Stator Windings, this tester features automatic compensation for water polarization potential, effectively minimizing measurement interference from the cooling-water circuit. It measures phase-to-ground and phase-to-phase insulation resistance and automatically calculates DAR (R60s/R15s) and PI (R10min/R1min) to identify moisture, aging, contamination, and other insulation issues.
Ideal for FAT, SAT, routine maintenance, and preventive testing, it provides a reliable assessment of stator winding insulation condition before high-voltage withstand testing and generator commissioning.
  • Detailed Description

Key Features

Easy connection, automatic measurement and built-in data storage function;

Dual display mode with digital readings and analog progress bar for easy observation;

Wide measuring range: 0.1 MΩ ~ 200 GΩ, test voltage up to 2.5 kV, output short-circuit current ≥25 mA;

Wide AC power supply voltage range, suitable for field operation;

Stable operation under ambient temperature from -10 ℃ to 40 ℃, adaptable to various test environments.

 

Technical Specifications & Operating Conditions

Model

HYDA

Accuracy

±(5% + 5 digits)

Measuring Range

0.1 MΩ ~ 200 GΩ

Display Mode

Dual display of digital readout and analog progress bar

Temperature Measurement

-25 ℃ ~ 125 ℃

Test Voltage

2.5 kV

Short-circuit Current

≥25 mA

Measuring Time

1~ 10 min

Power Supply

180 ~ 270 VAC, 50 Hz/60 Hz ±1%

Ambient Temperature

-10 ~ 40 ℃

Relative Humidity

20 ~ 80%

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