●Product introduction
Product name: 10.5kV/100MV hydroelectric generator set frequency modulation series resonance
Product specifications: XSN (XZ) -360kVA/30kV (frequency modulation)
Applicable test product: Hydroelectric generating set
Test product range: 10kV/100MVA hydroelectric generating set
Product role and function: 1. Help customers to achieve preventive AC withstand voltage test and handover AC withstand voltage test of various tested products;
2. Test cross-linked rubber-plastic power cables, power transformers, GIS, transformers, insulators, generators, switches and other test products insulation withstand various overvoltage capabilities and AC withstand voltage test for capacitive loads.
Product nicknames: series resonance withstand voltage test equipment, AC withstand voltage test equipment, inspection resonant booster device, series resonance withstand voltage tester.
Test object: power frequency AC withstand voltage test of 10kV/100MVA hydroelectric generating set, the highest test voltage does not exceed 23kV, and the single phase ground capacitance is not more than 1.6uF
●Technical parameters
1. Product core parameters:
Rated capacity: 360kVA;
Input power: single-phase 220 or three-phase 380V voltage, frequency is 50Hz;
Rated voltage: 30kV;
Rated current: 12A;
Working frequency: 30-300Hz;
Device output waveform: sine wave
Waveform distortion rate: output voltage waveform distortion rate ≤ 1%;
Working time: allow continuous 5min under rated load; overvoltage 1.1 times 1 minute;
Temperature rise: the temperature rise ≤65K after continuous operation for 5 minutes under rated load;
Quality factor: the device itself Q≥30 (f=45Hz);
Protection function: overcurrent, overvoltage and flashover protection for the tested product (see the frequency conversion power supply section for details);
Measurement accuracy: system effective value 1.5;
2. Excitation transformer JLB-30kVA/2.5kV/0.4kV 1 set
Rated capacity: 30kVA;
Input voltage: 0-400V, single phase;
Output voltage: 2.5kV
Structure: dry type;
Weight: about 120kg;
3. Inverter power supply BP-30kW/380V 1 unit
Rated output capacity: 30kW
Working power supply: 380±10%V (three-phase), power frequency
Output voltage: 0 -400V, single phase,
Rated input current: 75A
Rated output current: 75A
Voltage resolution: 0.01kV
Voltage measurement accuracy: 1.5%
Frequency adjustment range: 30 – 300Hz
Frequency adjustment resolution: ≤0.1Hz
Frequency stability: 0.1%
Running time: continuous 5min under rated capacity
The maximum temperature of the components during continuous operation for 5 min under the rated capacity is ≤65K;
Noise level: ≤50dB
4. Adjustable reactor DK-360kVA/30kV 1 section
Rated capacity: 360kVA;
Rated voltage: 30kV;
Rated current: 12A;
Inductance: 6-20H/single cell;
Quality factor: Q≥30 (f=45Hz);
Structure: dry type;
Weight: about 200kg;
5. AC/DC voltage divider JZL-30kV/3000pF 1 set
Rated voltage: 30kV;
High voltage capacity: 3000pF;
Dielectric loss: tgσ≤0.5%;
Partial pressure ratio: 1000:1;
Measurement accuracy: effective value 1.5;
Weight: about 10kg;
