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Power Frequency AC Test Sets 20kVA/75kv
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)
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
√ Aseismatic level: ≤8 level
√ Related humidity: ≤ 85% RH (25ºC)
√ Ground horizontal acceleration: 3.0m/s2
√ Altitude: ≤ 1000m
√ Ground vertical acceleration: 1.5m/s2
√ Max. day temperature difference: ≤25ºC
√ Pollution level: 1 level
√ Should be grounded reliably, ground resistance <0.5Ω.
√ Working environmental: Place the equipment in dry, clean, ventilative area free from inductive dust, spark, dirt and corrosive gas.
√ Power supply: Current >100A, voltage 230V
III. Technical Data
√ Rated capacity: 20kVA
√ Rated output voltage: AC 0-75KV
√ Measuring voltage: 100V
√ Rated output current: AC 0-267mA
√ Rated input current: 100A
√ Rated input voltage: 230V 50/660Hz Single phase
I. Parameters for Individual Parts
1. AC High Voltage Generator YD-20kVA/75kV (1 set)
√ Phase: Single
√ Rated voltage: low voltage winding 0.2kV
√ Rated capacity: 20kVA
√ Frequency: 50/60Hz
high voltage winding 0-75kV
√ Rated current: low voltage winding 100A
high voltage winding 0-267mA
√ Distortion: ≤2%
√ Measuring winding voltage ratio: 100:1
√ Winding to ground insulation: High voltage winding to low voltage, measuring winding and ground 1500 MΩ.
√ Insulation level (testing voltage): 100% rated voltage, withstand voltage 1 minute
Low voltage winding to high voltage, measuring winding and ground 1500MΩ.
Measuring winding to high voltage, low voltage winding and ground 15000 MΩ
√ Cooling: oil immersed
√ Oil electric strength test: breakdown voltage ≥40kV/2.5mm, dew point <15ppm, dielectric dissipation factor ≤0.2%(90ºC).
√ 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.
√ Digital calibrating, suitable for onsite testing.
√ Fully English interface, easy to operate.
√ High voltage icon flash indicating.
√ All the functions are settable by touching key, safe and reliable.
√ Could be paused arbitrarily under auto controlling mode.
√ 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.
√ 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.
√ Adjustable secondary current overload, variable from 10-110% of secondary current rating.
√ Stop/emergency button, could restart manually.
√ 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.
√ 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.
√ Build-in printer (optional)
√ High stability and reliability.
√ Communication function, to realize remote control and data monitor. (optional)
Specifications:
√ Rated capacity: 20kVA
√ Input current: 0-100A
√ Output voltage: AC 0-75kV adjustable continuously.
√ Control mode: manual/auto
√ Voltage measuring precision: 2 %FS ±3 digits
√ Current measuring precision: 2 %FS ±3 digits
√ Test voltage waveform: sine wave
√ Leakage current: AC 0-267mA (to set arbitrarily)
√ Timing: 0-9999 seconds
√ Power supply: AC230V ±10%,50Hz±2 Hz