SX-20kVA/75kV Power Frequency AC High Voltage Test System
 
The system is consisted by below units: 
 
Ø YD-20KVA/75KVA AC High Voltage Generator
Ø SX-20KVA Control Table
Ø Connection wires (3.5m)
Ø Discharging Rod (75KV)
 
 
Reference Picture (For reference using only)
I.      Test Application
The system is mainly designed for providing continuously adjustable output voltage for the testing 0-75KV.
 
    
II.   Working Condition
 
√  Environmental temperature: -15ºC to 45ºC
√  Related humidity: ≤ 85% RH (25ºC)
√  Altitude: ≤ 1000m
√  Max. day temperature difference: ≤25ºC
√  Pollution level:  1 level
√  Aseismatic level: ≤8 level
√  Ground horizontal acceleration: 3.0m/s2
√  Ground vertical acceleration: 1.5m/s2
√  Working environmental: Place the equipment in dry, clean, ventilative area free from inductive dust, spark, dirt and corrosive gas.
√  Should be grounded reliably, ground resistance <0.5Ω.
√  Power supply: Current >100A, voltage 230V
 
 
III.   Technical Data
 
√  Rated capacity: 20kVA
√  Rated output voltage: AC 0-75KV
√  Rated output current: AC 0-267mA
√  Rated input voltage: 230V 50/660Hz Single phase
√  Measuring voltage: 100V
√  Rated input current: 100A

Please contact Mrs. Ying Ying by email for further information.
 
I.   Parameters for Individual Parts
 
1.   AC High Voltage Generator YD-20kVA/75kV (1 set)
√  Phase: Single
√  Frequency: 50/60Hz
√  Rated capacity: 20kVA
√  Rated voltage: low voltage winding 0.2kV
                          high voltage winding 0-75kV
√  Rated current: low voltage winding 100A
                          high voltage winding 0-267mA
√  Measuring winding voltage ratio: 100:1
√  Distortion: ≤2%
√  Insulation level (testing voltage): 100% rated voltage, withstand voltage 1 minute
√  Winding to ground insulation: High voltage winding to low voltage, measuring winding  and ground 1500 MΩ. 
    Low voltage winding to high voltage, measuring winding and ground 1500MΩ.
Measuring winding to high voltage, low voltage winding and ground 15000 MΩ
√  Oil electric strength test: breakdown voltage ≥40kV/2.5mm, dew point <15ppm, dielectric dissipation factor ≤0.2%(90ºC).
√  Cooling: oil immersed
√  Construction: high quality steel plate.
 
 
2.  Control Table   SX-20KVA (1 set)
Features:
√   Information including voltage, current, time, status, prompt notice and etc could be read on large LCD screen.
√   Fully English interface, easy to operate.
√   All the functions are settable by touching key, safe and reliable.
√   Digital calibrating, suitable for onsite testing.
√   High voltage icon flash indicating.
√   Auto displaying test result (pass or fail), and recording the test object over current and voltage value of flashing or breaking down. 
√   Different alarm sounds if test is passed or failed.
√   Could be paused arbitrarily under auto controlling mode.
√   Withstand voltage time is settable from 0 to 9999 seconds. 
√   Auto timing: Under auto controlling mode, when the voltage is auto rising to the setting value, the unit starts to auto timing. After timing is up, to display test result, and back to zero start automatically.
√   Manual timing: Under manual control mode, timer could be started by manual. After withstand voltage timing is up, unit to back to zero start automatically.
√   Manual control mode: to increase/decrease the voltage by button control, unit to react the high/low limitation automatically, over-voltage, over-current protecting functions. To control the test process manually.  
√   Fixed primary current overload, factory set to 120% of variable transformer rated primary current.
√  Adjustable secondary current overload, variable from 10-110% of secondary current rating.
√  Stop/emergency button, could restart manually.
√  The voltage could be return to 0 V within few seconds after release safe button.
√  To control rising rate intelligently, when the voltage is closing to setting value,  rising speed could be auto slowdown.
 Switch selectable output rate of rise, with fixed speeds of 750V/205kV/5kV/7.5kV per second.
√   Over-current, flash, breakdown protection.
√   0-10V DC analog feedbacks for output voltage and current.
√   High stability and reliability.
√   Communication function, to realize remote control and data monitor. (optional)
√   Build-in printer (optional)
 
Specifications:
√  Rated capacity: 20kVA
√   Input current: 0-100A
√   Output voltage: AC 0-75kV adjustable continuously. 
√   Control mode: manual/auto
√   Test voltage waveform: sine wave
√   Leakage current: AC 0-267mA (to set arbitrarily) 
√   Voltage measuring precision: 2 %FS ±3 digits
√   Current measuring precision: 2 %FS ±3 digits
√   Timing: 0-9999 seconds
√   Power supply: AC230V ±10%,50Hz±2 Hz

Please contact Mrs. Ying Ying by email for further information. We can customize suitable products and systems according your requirements and give you the best quotation. Thank you!