HDCG I-1200kV/200mA HVDC Generator

Mode: HDCG I-1200kV/200mA

Applied Standard: 
 IEC 61643-1 2011 Surge Protective Devices Connected to Low-voltage Power Distribution Systems-Part 1: Performance and Testing Methods
 IEC 61083-1 Instruments and Software Used for Measurement in High-voltage Impulse Tests-Part 1: Requirements for Instruments
 IEC 61083-2 Instruments and Software Used for Measurement in High-voltage and High-current Tests-Part 2: Requirements for Software for Tests with Impulse Voltages and Currents
 IEC 62475 High Current Test Techniques-Definitions and Requirements for Test Current and Measuring Systems

Technical Parameters: 
Rated Voltage: 1200kV
Rated Current : 200mA
Ripple Factor: <3%
Voltage stability : Test object’s volt. drop <1% under resistive current
Stages: 3 stages voltage-multiplying Drop 400kV
Polarity reverse: Manual
HV silicon stack polarity reversing time: approx. 15minute
Withstand voltage and partial discharge: Withstand voltage: raise the current to rated value, continuous 10minute.
Continuous 120minute at the voltage of ±1000kV. Measure the partial discharge at last 30minute, ≥300pC pulse not surpass 9 times.
≥1500pC pulse not surpass 3times. Meet the related IEC standard. When doing above test, no flashover and breakdown.

Main circuit structure, this system is designed as unilateral unsymmetrical single stage voltage-multiplying circuit, besides test transformer, voltage regulator, the filter capacitor, multivoltage capacitor, silicon rectify stack is placed separately on three basement. The resistance voltage divider and earthing switch has the same basement which equip universal wheel and lifting jack. We can customize movable and stable type. Manual polarity reverse. The top electrode (corona ring) is special designed for DC generator. See outside drawing. There is safety earthing system on the generator, which protects the safety of staff and equipment.

Principle Diagram: