Variable Frequency AC inductance resonant test systems For GIS

• Customization: Available
• After-sales Service: Yes
• Warranty: 1 year
• Model NO.: GDTF-160/160
• power supply: Single phase 380V
• Rated Capacity: 160kVA
• Rated voltage: 160kV
• Rated current: 1A
• Working frequency: 30-300Hz
• Accuracy: 1.5% (RMS)
• Output waveform: sine wave
• Transport Package: Standard Export Package
• Specification: ISO, SGS
• Trademark: HV HIPOT
• Origin: Wuhan China
• Production Capacity: 2000PCS/Year

Product Description

Variable Frequency AC inductance resonant test systems For GIS

Product Description

General information

I. Test Object and Requirement

The system is specially designed for AC withstand voltage test for below items, with below specifications and requirements.

1. 220kV,85000kVA main transformer, capacitance ≤ 0.02μF, test frequency 30-300Hz, test voltage 160kV, test time 1min.

Note: Test objects are only for reference. If you have other spec. test object, please inform us and we will select a suitable GDTF model.
 

Working Environment

Environmental temperature: -15ºC to 45ºC

Related humidity: ≤ 90% RH

Altitude: ≤ 3km
 

Technical Data

Rated capacity: 160kVA

Input power supply: Single phase 220V/Three phase 380V, 50Hz

Rated voltage: 160kV

Rated current: 1A
Working Frequency: 30-300Hz

Output waveform: sine wave

Waveform distortion rate: ≤1%

Working time: constant working of 60mins under rated load. Working of 1min, under 1.1

times of rated voltage

Temperature rise: ≤65K after constant working of 60mins under rated load

Quality factor: Q ≥30 (f=45Hz)

Protective function: Over-current, over-voltage and flashover protections for test object.

Accuracy: 1.5% (RMS)

Applied standard

GB10229-88                          Reactor

GB1094                                 Power transformers

GB50150-2006                      Standard for hand-over test of electric equipment installation engineering

DL/T 596-1996                      Preventive test regulation of electric equipment

GB1094.1-GB1094.6-96              Protection class of Shell

GB2900                                  Electrotechnical terminology

GB/T16927.1~2-1997             High voltage Testing Technique
 

Capacity Determination of the equipment

4pcs Reactors will be designed, each reactor is 40kVA/40kV/1A/100H.

The system 160kVA/160kV will be selected.

The reactors used in series or parallel meets the testing requirements.

Reactors Test object	Reactors 40kVA/40kV 4pcs	Output voltage of exciting transformer
Meet 100MVA/110kV transformer (test voltage 160kV, test time 1min)	4pcs reactors in parallel	10kV
Meet 110kV substation system (test voltage 265kV, test time 1min)	4pcs reactors in series	10KV

 Parameters for Individual Parts

1. Exciting Transformer GDJL-10kVA/2.5/5/10kV (1 set)
 

1. Rated capacity: 10kVA
2. Input voltage: 0-400V, single phase
3. Output voltage: 10kV,10KV is used for the 110kV substation system to communicate with pressure resistance.
4. Type: Dry type
5. Weight: approx. 65kg

2. Variable frequency power supply GDTF -10kW/220/380V (1 set)
 

1. Rated power: 10KVA
2. Working power supply: Single/Three phase 220/380V±10%, 45~65HZ
3. Output voltage: 0-400V, single phase
4. Frequency adjusting range: 30-300Hz
5. Frequency adjusting resolution: ≤0.1Hz
6. Frequency stability: ≤0.02%
7. Output current:0~25A
8. Weight: approx. 15kg.

It can realize below functions,

1. The Variable frequency power supply can be placed in lengthways and in horizontal, suitable for on-site operation.

b. High stability and reliability. With robust aluminum case and damping rubber support leg, easy for transportation.

c. Touch screen LCD display, or external mouse can be connected.
It shows below parameters,
Resonance voltage(target voltage), test frequency, measurement frequency, LV voltage, LV current, Withstand voltage time, over-voltage and over-current protection, flashover protection, voltage boosting and timing, operation mode switching, capacitance/inductance/frequency calculation, parameter query, frequency curve and voltage curve.

d. Parameters setting and selection
Starting frequency, end frequency, starting voltage, voltage boosting and timing, voltage divider ratio measurement, exciting transformer ratio, over-voltage and over-current protection, flashover protection, test mode, capacitance/inductance/frequency calculation, prompt, and help.

e. Test mode: touch screen/external mouse operation, Auto/Semi-auto/Manual and other modes selection.

f. Protection function and information tips
HV over-voltage protection, LV over-current, over-current protection and Non-resonance protection, zero and flashover protection, emergency stop, low voltage protection.

g. Data storage function: Test result save (manual save), print, upload, and return.
1) 50pcs test results can be saved.

1. The saved data can be showed on the screen. With USB port, data can be output to print or printed directly by the equipment. (If buyer need this requirement, please specify it on the contract.)

h. Auto stabilivolt function. Voltage stability up to 1.0%.

i. Frequency adjusting range and resolution can be set.
Frequency adjusting range can be set at 30-300Hz, 45-100Hz, 200-300Hz as requirements.
Frequency resolution can be set at 0.1Hz, 0.2Hz, 0.5Hz, or 1.0Hz. Obtain optimized balance between efficiency and accuracy of harmonic adjusting.

j. Coarse tuning and fine tuning for frequency. Search resonance point automatically.

3. HV Reactor GDDK-40kVA/40kV (4pcs)
 

1. Rated capacity: 40kVA
2. Rated voltage: 40kV
3. Rated current: 1A
4. Inductance: 100H (per set)
5. Working time: continuous 60min
6. Temperature rise:<60°
7. Power frequency:30-300HZ
8. Type: Dry type
9. Weight: approx. 42kg

4. Capacitive Divider GDFR-160kV/750pF (1 set)
 

1. Rated voltage: 160kV
2. Capacitance: 750pF
3. Working frequency:30~300Hz
4. Dielectric loss: tgσ ≤0.5%
5. Measuring accuracy: 1.5%
6. Rated voltage:160kV/750pF

Product included

No.	Name	Module No. & Specs	Quantity
1	Exciting Transformer	GDJL-10kVA/2.5/5/10kV	1 set
2	Variable frequency power supply	GDTF -10kW/220/380V	1 set
3	HV Reactor	GDDK-40kVA/40kV	4 pcs
4	Capacitive Divider	GDFR-160kV/750pF	1 set
5	Connecting Cable		1 set
6	Factory Test Report		1 copy
7	User's Guide		1 copy

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