Overview
Variable Frequency Anti-Interference Dielectric Loss Tester is used for measuring dielectric loss in ultra-high voltage field, using variable frequency anti-interference and Fourier digital filtering technology to keep measurement data stable and reliable under strong electric field interference; the measurement results are clearly displayed on a large screen dual-color LCD, with a full Chinese operation interface, making it extremely convenient to use.
Technical Indicators
Anti-interference method: Variable frequency anti-interference
Test methods: Positive connection method, Reverse connection method, Self-excitation method, External connection method
Measurement range: Capacitance Internal high voltage <60000PF
External high voltage: 30P~600000PF
Dielectric loss: Unlimited, minimum resolution 0.01%
Accuracy: Capacitance ±(1.5% reading +2PF)
Dielectric loss ±(2% reading +0.09%)
Internal test power supply: 0.5~10KV voltage slow rise and fall
45~65Hz frequency adjustable, 45/55Hz automatic dual-frequency test
Maximum output current 200mA
Self-excitation power supply 6~50V variable frequency, maximum output current 20A
Additional functions: Electronic perpetual calendar
Standard RS232 interface, 100 sets of data storage
Working conditions: Power supply 180~240VAC 50Hz
Working environment: Temperature: -10℃~50℃, Humidity 30%~70%
Features
1. Fully automated testing, Chinese operation interface, convenient for users; the instrument comes with a help menu to facilitate users in fault analysis of the instrument.
2. Strong anti-interference capability, can maintain stable and reliable results even in substations at 500KV (or even higher) voltage levels, not only single-frequency testing but also 45/55Hz dual-frequency testing.
3. The test voltage of the instrument implements "slow rise and fall", effectively preventing the "capacitive rise" effect and protecting the safety of the test object and the instrument.
4. The instrument implements pre-protection against overcurrent and overload, can quickly cut off the test power supply to protect the safety of the test object and the instrument.
5. The test cables of the instrument are made of silicone rubber and other special insulating materials, lightweight and flexible, can be used on the ground at 10KV voltage level.
6. The instrument comes with an electronic perpetual calendar and large-capacity storage space, can memorize 100 sets of test data.
7. The instrument has a standard RS232 interface, and a large amount of test data inside the instrument can be uploaded to a large computer for use.
Instrument Structure
Figure (1) is the panel structure diagram of the instrument. The usage methods of each function key will be specifically introduced in the usage method.
Figure (2) is on the side of the instrument. Press the compartment door (PUSH) once, and it will automatically open. It is a schematic diagram of the test wiring jacks of the instrument. This part will generate high voltage when the instrument is working, so it must be used with caution.
