HVHIPOT AC Variable Frequency Resonant System (AC Withstand Test for 220kV/110kV Transformer)

• After-sales Service: Yes
• Warranty: 1 year
• Capacity: 200kVA
• Voltage: 200kV
• Transport Package: Standard Export Package
• Specification: ISO
• Model NO.: GDTF-200kVA-200kV
• Trademark: HV HIPOT
• Origin: Wuhan, China

Product Description

GDTF-200kVA-200kV AC Variable Frequency Resonant System (AC Withstand Test for 220kV/110kV Transformer)

I. General information
GDTF-200kVA-200kV AC Variable Frequency Resonant System is specially designed for AC withstand voltage test for 220kV/25000kVA and below voltage level Transformer, capacitance 0.004-0.01uF, test frequency 45-65Hz, test voltage≤200kV, test time 1min.


II. Technical Data

1. Rated capacity: 200kVA
2. Input power supply: Single phase 220V/three phase 380V±10%, 50Hz;
3. Rated output voltage:200kV
4. Rated current: 1A
5. Working Frequency: 30~300Hz
6. Output voltage waveform: sine wave.
7. Waveform distortion rate: output voltage waveform distortion rate ≤1%;
8. Working time: under rated load, continuous 5min is allowed; overvoltage is 1.1 times for 1 minute;
9. Temperature rise: The temperature rise is less than or equal to 65K after continuous operation under rated load for 5 minutes;
10. Quality factor: The device itself Q≥30 (f=45Hz);
11. Protective function: overcurrent, overvoltage and flashover protection for the tested product.
12. Measurement accuracy: system RMS level 1.5;

III.System configuration and detailed parameters
 

1. Exciting Transformer :11kVA/10kV/0.4kV (1 set)
2. Rated capacity: 11kVA
3. Input voltage: 0-400V,single phase.

1. Output voltage: 10kV;
2. Structure: dry type;
3. Weight: approx. 65kg

      2.Variable frequency power supply  11kW/220/380V (1 set)

1. Rated output capacity: 11kW
2. Working power supply: Single phase 220V/three phase 380V±10%, 50Hz or 60Hz(power frequency)
3. Output voltage and current: 0-400V,single phase.
4. Rated input current: 27.5A;
5. Rated output current: 27.5A;
6. Voltage resolution: 0.01kV;
7. Voltage measurement accuracy: 1.5%;
8. Frequency adjusting range: 30-300Hz
9. Frequency adjusting resolution: ≤0.1Hz
10. Frequency stability: 0.1%
11. Running time: Continuous 5min at rated capacity;
12. The maximum temperature of the components during continuous operation for 5 min under the rated capacity is≤65K;
13. Noise: ≤50dB
14. Weight: about 15kg;

3.Performance characteristics
 

1. The placement of the variable frequency power supply is vertical and horizontal, which is especially suitable for on-site operation and observation;
2. The inside and outside are equipped with special shock-absorbing rubber support feet and protective aluminum boxes, which can effectively slow down the bumps and vibrations during transportation and the impact during hoisting. Ensure the long-term stability and reliability of the variable frequency power supply;
3. Parameter display: touch or external mouse large-screen LCD interface display system;
4. Parameter setting: The large-screen touch LCD color screen and external mouse can directly complete the setting of various parameters, which can be used for starting frequency, ending frequency, starting voltage, stage boost and timing, measuring voltage divider transformation ratio, excitation transformation ratio , overvoltage protection, overcurrent protection, flashover protection, test mode, capacitor-inductor frequency exchange calculation, parameter setting prompts and help parameters to set or select;
5. Test mode: touch screen and external mouse operation, there are three operating states: automatic, semi-automatic and manual. It has the functions of boosting, tuning (including manual and automatic), segmented boosting and timing, running status, mode switching, fault prompt, capacitor and inductor frequency exchange calculation functions, etc.;
6. Protection function and information prompt: It has multiple protection functions such as high-voltage overvoltage protection, low-voltage overcurrent protection, overcurrent protection, and detuning protection, zero position, flashover protection, emergency shutdown, and undervoltage protection;
7. Data storage function: save test results (manually save), print, upload, check back, etc.

A.Test results: After the manual or automatic test is completed, the detailed parameters of the test can be displayed in the test result interface. When the test is interrupted, the interrupt status can be prompted. The parameters can be saved in the memory, which is non-volatile memory and can save 50 test records;


B.Data query: The saved test result data can be displayed on the screen, and it has a USB interface, which can output and print the data or use the printer carried by the device to print; (The printer is optional by the customer, if the customer has this demand, it must be specified in the contract)
 

1. Automatic voltage stabilization function: The system automatically tracks and maintains a stable test voltage according to the set test voltage or manual boost results, and the voltage stability can reach 1.0%;
2. FM range and frequency resolution can be set: FM range can be set to 30~300Hz, 45~100Hz, 200-300Hz, set as needed, which can speed up the tuning process; frequency resolution can be preset to 0.1Hz as needed , 0.2Hz, 0.5Hz, or 1.0Hz, to achieve an optimal balance between tuning efficiency and tuning accuracy;
3. Frequency adjustment is divided into coarse adjustment and fine adjustment, and can automatically find the test resonance point to ensure that the resonance frequency does not drift during the entire test process;

4. HV Resonant Reactor  50kVA/50kV (4pcs)
 

1. Rated capacity: 50kVA
2. Rated voltage: 50kV
3. Rated current: 1A
4. Inductance: 200H (per piece)
5. Quality factor:Q≥20 (f=80Hz);
6. Weight: approx. 50kg;

5. Capacitive Divider   200kV/500pF (1 set)
 

1. Rated voltage: 200kV
2. HV Capacitance: 500pF
3. Dielectric loss: tgσ≤0.5%;
4. Divided pressure ratio: 3000:1
5. Measurement accuracy: effective value 1.5;
6. Weight: approx. 25kg;

6. Compensation capacitor   200kV/500pF (1 set)
 

1. Rated voltage: 200kV;
2. High voltage capacitance: 5000pF
3. Weight: about 25kg;

X. Basic configuration of the system

Main Parts

No.	Name	Module No. & Specs	Qty
1	Exciting Transformer	GDJL-11kVA/10kV/0.4kV	1 set
2	Variable frequency power supply	GDTF-11kW/220/380V	1 set
3	HV Resonant Reactor	GDDK-50kVA/50kV	4 pcs
4	Capacitive Divider	GDFR-200kV/500pF	1 set
5	Compensation capacitor	GDBC-200kV/5000pF	1 set

Accessories

1	Connecting Cable	Standard	1 set
2	Factory Test Report	Standard	1 copy
3	User's Guide	Standard	1 copy
4	Packing list	Standard	1 copy
5	QC Pass certificate	Standard	1 copy