Water-Cooled Insulation Resistance Tester
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The water-cooled insulation resistance tester, a stator water-cooled generator insulation characteristic tester, has strong load capacity, outputs rated negative high voltage of 2500V, with short-circuit current about 40mA; when load is 70kΩ, voltage drop <10%. Besides accurately measuring insulation performance, this instrument can also automatically measure temperature, humidity, and time; automatically calculate absorption ratio and polarization index; store each measurement result; comes with a built-in printer; and can communicate with a computer.
Safety Measures
1. Be sure to read this manual carefully before using this instrument.
2. The operator of the instrument should have general knowledge of electrical equipment or instruments.
3. This instrument can be used indoors and outdoors, but should avoid places with rain, corrosive gases, excessive dust, high temperature, direct sunlight, etc.
4. The instrument should avoid severe vibration.
5. Maintenance, care, and adjustment of the instrument should be performed by professionals.
6. It is strictly forbidden to touch the test leads during testing!
7. After testing, it is best to short-circuit the test terminals for manual discharge!
8. Strictly follow safety operating procedures.
9. Non-test personnel must stay away from the high-voltage test area, and the test area must be clearly marked with fences, ropes, warning signs, etc.
Purpose
The insulation characteristic tester is specially used for resistance measurement of water-cooled generators, and can also be used for insulation testing in laboratories or on-site. At 2500V voltage, the output current is greater than 25mA. The maximum output voltage is 2500V. It contains a high-precision micro-current measurement system and a digital voltage boosting system. Only one high-voltage wire and one signal wire are needed to connect to the test object for measurement. The measurement is automatic, and the results are displayed on a large-screen LCD and stored.
Main Features
Suitable for measuring insulation resistance, absorption ratio, and polarization index of water-cooled generators (fully automatic). ● The rated test voltage is 2500V, and it can measure insulation resistance up to 100GΩ (100000MΩ).
● No need to compensate and adjust the water polarization potential. ● Even if the resistance between the frame and the water collecting pipe is as low as 3kΩ, measurement accuracy can be guaranteed.
● When water resistance is greater than 80kΩ, test accuracy can be guaranteed.
● Insulation resistance value is displayed simultaneously by an analog meter and a 3 LCD digital meter.
● Dual-scale automatic range conversion, logarithmic scale, convenient reading.
● Can display output voltage and ambient temperature.
● Timer accumulates test time, displaying minutes and seconds.
● Can use the [Rt] button to read the instantaneous resistance value on the LCD digital meter.
● Can automatically measure and memorize R15S, R60S, R10min, R60S/R15S, R10min/R1min values.
● Complete protection functions ensure operational safety.
1. Uses a 32-bit microcontroller control, full Chinese operation interface, easy operation.
2. Automatically calculates absorption ratio and polarization index, and automatically stores data every minute for 15 seconds, 1 minute, 2 minutes, and 10 minutes for analysis.
3. Large output current, short-circuit current greater than 45mA.
4. The high-voltage generation module adopts fully enclosed technology with internal protection resistors, safe and reliable.
5. Strong anti-interference capability, suitable for on-site operation in ultra-high voltage substations.
6. Automatically discharges after testing and monitors the discharge process in real-time.
7. Built-in rechargeable battery (optional), fully charged can be used continuously for 10-12 hours.
- Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
