AC High Voltage Resonance Test Series 1.5% System Accuracy Three Phase 380V 50Hz 1350kVA 270KV

1350kVA 270KV AC High Voltage Resonant Test System for 110KV Substation Cables

This series devices are designed for AC withstand voltage test of substation primary equipment under 550KV or below, mainly composed of variable-frequency power supply, exciting transformer, reactor and capacitive Voltage divider

Features:

1. rated voltage:
    27kV--- meets AC withstand voltage test of 10kV cable

                 working frequency 30-300Hz

                 Test voltage is not more than 22kV, test time is 5min;
    54kV--- meets AC withstand voltage test of 35kV cable

                 Working frequency 30-300Hz

                 Test voltage is not more than 52kV, the test time is 60min;

    135kV--- meets AC withstand voltage test of 110kV cable 

                 Working frequency 30-300Hz

                 Test voltage is not more than 128kV, test time is 60 min;

    270kV--- meets AC withstand voltage test of 110kV sbustation 

                  Working frequency 30-300Hz

                  Test voltage is not more than 265kV test time is 1 min;

2. output voltage waveform distortion rate: <1.0%
3. allow continuous working hours: one time working for 60 minutes under rated conditions;
4. Quality factor of the device: Q > 30 
5. device output waveform: sine wave
6. input power supply: 380V or 220V
7. frequency regulation range: 30Hz ~ 300Hz
8. system measurement precision: 1.5%
9. over voltage, over current, zero start and other protection functions.

COMPOSITION

1.  Frequency conversion power supply 1 unit

(1) rated power: 22 kW
(2) Input voltage: three phase 380V 50Hz
(3) output voltage: 0 ~ 400V adjustable
(4) Output voltage frequency: 30 ~ 300Hz
(5) 0.1Hz regulation step
(6) Frequency instability is less than 0.02%
(7) Output current: 0 ~ 55A

2. Frequency conversion power supply 1 unit

(1) rated power: 75 kW
(2) Input voltage: three phase 380V 50Hz
(3) output voltage: 0 ~ 400V adjustable
(4) Output voltage frequency: 30 ~ 300Hz
(5) 0.1Hz regulation step
(6) Frequency instability is less than 0.02%
(7) Output current: 0 ~ 187.5A

3.  High voltage reactor (12 units)

(1) rated working voltage: 27kV
(2) rated working current: 4.17A
(3) rated inductance: 32H
(4) Continuous working time: 60min
(5) Temperature rise: less than 65ºc
(6) Working frequency: 30~300Hz

4.  excitation transformer 2 units

(1) rated capacity: 37.5kVA
(2) input voltage: 400V
(3) output voltage: 3/6/18kV
(4) output current: 12.5/6.5/2.08A

5. capacitance divider (1 units)

(1) self capacitance: 1000pF
(2) rated voltage: 270kV
(3) working frequency: 30 ~ 300Hz
(4) uncertainty: 1.5%

6. test line (1 sets)