Address: No.2-2 Plot,Guannan Science and Technology Industrial Park,Donghu Development Zone, Wuhan, Hubei, China (Mainland) Zip: 430074 &
Phone: +86-27-87617482
AC Voltage Withstand Test Instrument
Features:1) Endless variable inductance, can reach full resonance at any point within testrange2) Operating frequency: 50Hz3) Quality factor: Q≥504) Output voltage waveform distortion factor: ≤0.5%5) The required capacity of test power scores time less than that of conventionaltest transformers6) Weight and volume is much less than those of conventional test transformer7) Very convenient for field test and shortens much time of test process needs8) Highly automatic test, complete over current and over voltage protectionfunctionsFunctions:1) Complete control functions:a) Programmable automatic tests functionb) Searches for resonant point automatically and makes sure the test voltageis under 40% of test voltage valuec) Automatically steps up process resonant point tracing functiond) HV limitation functions and avoids over voltage resulting from error operatione) Voltage tracing function during voltage withstand test: system can long timeautomatically trace test voltage. Once test voltage floats to differentvalues ±2.5% with test voltage, the system will regulate the testvoltage to setting value. During automatic control, can manual interference atany timef) Steps up speed automatic variable control function: the speed is controlledwithin 2 - 5kV/s2) Complete data test and display function, the following can be displayed:a) Power voltage and currentb) Voltage regulated output voltage and currentc) HV voltaged) Iron core gap valuee) System Q valuef) Resonance cosine Φ valueg) U-t curve3) Real-time status self-check and display function: can display all theself-operation, convenient for the user to monitor. PLC monitors thesystem automatically during test and deals with failure4) Multi-reliable protection function:a) Fiber communication isolation: isolate control part from main test system byfiber, assuring the safety of controlling parts and testersb) Flashover protection: when test object flashover, the power should be cut offat once, avoiding several items` flashover to lead failure point of extensionaltest objectc) Over voltage protection: over voltage in any situations, PLC cuts off powerat onced) HV sample signal lost protectione) Battery power-fail protection, gap width value, power frequency factor value,and flashover signal value lost protection, communication abnormalprotection. Above is the PLC self monitor of system operating status. Whenany of them appears, PLC will step down at once, cut off power anddisplay corresponding failure information, which is useful for system protectionf) HV limitation protection: avoids over voltage resulting from error operationof testersg) Emergency break protection: once failure, tester can operate this button tocut off power directly5) Complete data management function6) System inner database can store history test datas of different test objectswith flexible and simple searches
Features:1) Cordwood module design, multi-level reactor2) Test frequency: 30 - 300Hz3) Each component has large capacity, wide range applications, can replacetest transformer4) Intelligent variable fr
Features:1) Variable frequency resonance mode, cordwood module adopted in the reactor2) Test frequency: 30 - 300Hz or 35 - 75Hz3) Pure sine waveform with distortion ≤1%4) Simple connection and easy
Features:1) Suitable for DC voltage withstand test or DC leaking current test of HVelectric equipment2) Takes international general type chassis, vertical and horizontal3) High output voltage stabilit
Features:1) Perfect control function2) Intelligent auto-control system: system can auto finish the test as presettest program and monitor parameters of all monitoring point3) Voltage tracing function
Specifications:1) Current output of six phases: each AC phase output 20A, 210VA and each DCphase output ±5A2) Voltage output of six phases: each AC phase output 120V, 70 / 100VA and eachDC phas
Specifications:1) Tan-delta test for equipment of electric substation at voltage grade 500kV2) Test operating mode: different frequency mode, 45 / 55 / 50 / 55 / 65Hz3) Equipment HV output: 0.5 - 10kV
Test range and accuracy:1) Voltage: 0 - 50V, full range error: 0.2%, 50 - 500V, accuracy: 0.2%2) Current: 0.1 - 1A, full range error: 0.2%, 1 - 5A, accuracy: 0.2%3) Dissipation: 0 - 2,500W, intrinsic
Features:1) Integrated variable frequency and voltage regulated, big LCD screen display2) Automatic resonant regulated, manual frequency regulated, and automaticvoltage step-up and voltage withstand f
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