Address:II-2 Guannan Industrial Park, Donghu Development Zone, Wuhan City, Hubei Province. China Zip:430074
Features: 1) Endless variable inductance, can reach full resonance at any point within test range 2) Operating frequency: 50Hz 3) Quality factor: Q≥50 4) Output voltage waveform distortion factor: ≤0.5% 5) The required capacity of test power scores time less than that of conventional test transformers 6) Weight and volume is much less than those of conventional test transformer 7) Very convenient for field test and shortens much time of test process needs 8) Highly automatic test, complete over current and over voltage protection functions
Functions: 1) Complete control functions: a) Programmable automatic tests function b) Searches for resonant point automatically and makes sure the test voltage is under 40% of test voltage value c) Automatically steps up process resonant point tracing function d) HV limitation functions and avoids over voltage resulting from error operation e) Voltage tracing function during voltage withstand test: system can long time automatically trace test voltage. Once test voltage floats to different values ±2.5% with test voltage, the system will regulate the test voltage to setting value. During automatic control, can manual interference at any time f) Steps up speed automatic variable control function: the speed is controlled within 2 - 5kV/s 2) Complete data test and display function, the following can be displayed: a) Power voltage and current b) Voltage regulated output voltage and current c) HV voltage d) Iron core gap value e) System Q value f) Resonance cosine Φ value g) U-t curve 3) Real-time status self-check and display function: can display all the self-operation, convenient for the user to monitor. PLC monitors the system automatically during test and deals with failure 4) Multi-reliable protection function: a) Fiber communication isolation: isolate control part from main test system by fiber, assuring the safety of controlling parts and testers b) Flashover protection: when test object flashover, the power should be cut off at once, avoiding several items' flashover to lead failure point of extensional test object c) Over voltage protection: over voltage in any situations, PLC cuts off power at once d) HV sample signal lost protection e) Battery power-fail protection, gap width value, power frequency factor value, and flashover signal value lost protection, communication abnormal protection. Above is the PLC self monitor of system operating status. When any of them appears, PLC will step down at once, cut off power and display corresponding failure information, which is useful for system protection f) HV limitation protection: avoids over voltage resulting from error operation of testers g) Emergency break protection: once failure, tester can operate this button to cut off power directly 5) Complete data management function 6) System inner database can store history test datas of different test objects with flexible and simple searches
