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WUHAN FANKE HAIWO HIGH VOLTAGE TECHNOLOGY CO.,LTD.
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Large Power Generator Test Equipment Power Frequency Resonant Circuit Test

WUHAN FANKE HAIWO HIGH VOLTAGE TECHNOLOGY CO.,LTD.

Large Power Generator Test Equipment Power Frequency Resonant Circuit Test

Brand Name : Fanke High-voltage

Model Number : CHX-L-3750KVA/65KV

Certification : ISO9001

Place of Origin : CHINA

MOQ : One unit

Price : 40000~150000 USD /Unit according to detailed model

Payment Terms : L/C, T/T

Supply Ability : 5units/2months

Delivery Time : 35~45 work days

Packaging Details : Export standard wooden case with fumigation free

Test Principle : Power Frequency Resonant Circuit

Usage : AC Hipot Test for large generator stator or rotor winding

Max.capacity : 3750KVA

Max. Voltage : 65KV

Design Feature : Adjustable inductance test reactor , 50Hz or 60Hz testing ,Dedicated to large hydroelectric generator stator test

Component : Control console,Voltage regulator,Excitation Transformer,Adjustable inductance reactor, Optional load compensation load reactor, And Voltage Divider

Test Frequency : 50Hz or 60Hz

Duty Cycle : 10mints or made by order

Test Accuracy : No Less Than 1.0%

Output Waveform : Pure Sine Wave

Special For : AC Hipot test for Large hydro-generator stator or thermal generator stator

Test Standard : IEC60060-1:2010 ; IEC 60034-1:2004; IEEE 115:2009; GB/T 8564-2003; JB/T 6204-2002

Note : PD free Type can be made by order

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1. Application :

According to the relevant test standards from IEC and IEEE, at the time of overhaul or new erection of the generator , the stator winding of the large capacity hydroelectric generator or thermal power generator needs to conduct AC withstand voltage test at power frequency (50/60Hz) test frequency, so that to checking the insulation status of the winding.

The test set model CHX-3750KVA/65KV had been ordered and used by Xiangjiaba Hydropower Plant in China , which are used for conduct on-site AC withstand voltage test at power frequency (50Hz) test frequency for the stator of 800MW stand-alone capacity generator. The highest test voltage of this set is no more than 65KV; the max. testcucrent is no more than 57A. the duty cycle is no more than 10mints.

Until now , this test set had formed many different serialized model according to different votage withstand test applications .The alike model can see other typical model and typical at the following clause.


2. Main Components:

SN Name of Components Type and specification Qty. Each weight Each Dimension
1 Resonance Control console DCG-L-400KVA/380V 1piece 25kgs 600*360*850mm
2 Electric voltage regulator cabinet DT-400KVA/0~420V 1piece 2500kgs 1350*1350*1450mm
3 Excitation transformer CQSB-400kVA/6KV,7KV,10KV 1piece 1300kgs 1050*750*1100mm
4.1 Variable inductance reactor CHX(TL)-1500kVA/65kV 1piece 3500kgs 1450*750*1800mm
4.2 Fixed inductance reactor FKDK-1125KVA/65KV 2pieces 800kgs D480*H520mm
5 Voltage divider SGB-100KV 1set 35kgs D170*H1850mm
6 Special test accessories
Note : Special requirement can be made by order.

3. Test priciple :
Large Power Generator Test Equipment Power Frequency Resonant Circuit Test
5.1 Technology Advantage of series resonant test circuit

  1. Reactive power full compensated, the power of the equipment and power is only less than 1/10 of measured equipment; with smaller volume and lighter compared with the equipment in same capacity.
  2. With large output capacity and small power capacity, low cost, easy to operate and keep safe.
  3. Typical current filter circuit, the output voltage distortion (THD) is very small
  4. The short circuit current after flashover or breakdown is only less than 1/10 (1/Q) of the measured current, can effectively prevent the damage to fault point after breakdown.
  5. Auto blowout the arc after flashover, it is a long and stable process to recover the serial resonant voltage, safe.

5.2 Function and feature of this test set

① Remote test function for the iron-core gap of reactor:The gap sensor is installed in the reactor, which directly reads the iron-core gap on the console to guide operation. The gap limiting switch and indicator are also installed.

② Auto step down function when withstanding time is up:Withstanding timing adopts digimatic timer. When withstanding time is up, the system will auto step down.

③ Zero position close, zero start step up function:With zero limiting function. If the voltage regulator is not at zero position, then the HV output button cannot be closed, assuring the system step up from zero.

④ Over current protection:The system is with over current relay, which is of high anti interference, fast action, protection test object against over-current damage.

⑤ Over voltage and test object flash-over protection functions:This system takes electronic over voltage and flash-over protection board, protects test object against over voltage and flash-over. It is fast, stable and reliable, overcoming the instability, large discreteness and inconvenient adjustment of sphere-gap protection voltage. The setting of over voltage protection is manual adjustment, digital display, which is direct, convenient and accurate. The flash-over protection samples the accident variance of discharging signal falling delay, compares it with basic signal and determines. It is of high accuracy, avoiding possible mistake movement by accident variance of rising delay.

⑥ Real-time monitor function for test data:It is able to monitor HV side voltage, current and LV side voltage, current, which is more direct viewing the test status.

⑦ Digital display of circuit resonance and locking function when it is not of resonance and step up:

It can directly display the resonance status of the system by power factor. If the system is not at the resonant point, it must press close button to step up. When the system is adjusted to resonance, release the close button, click on the step up/down button to step up or step down.

⑧ Emergency stop :“Step on” emergency brake switch. Once there is abnormal conditions during test, step on this switch, the main power will be cut off right away to protect the safety of the testing personnel and the equipment.

6. General Technical data:

  1. Mode of system test: Series resonant with variable inductance
  2. System model : CHX-L-3750KVA/65KV
  3. Input power supply : 380±10%(single-phase),50Hz/60Hz
  4. Rated output capacity: 3750kVA
  5. Rated output Voltage:65KV
  6. Max Test voltage : no more than 65KV
  7. Rated output current: 57A
  8. Reg. Freq range : 50/60Hz
  9. Output Resonance voltage waveform: pure sine wave
  10. THD of output waveform: ≤1%
  11. Insulation level: Under 1.1 times and keeping 1min, normal
  12. Duty cycle : 10mins on under rated current working condition ;
  13. Quality factor of test set itself: Q≥30 ;
  14. Temperature rise: Less than 65K under rated current working 10mints;
  15. Noise level: No more than 65dB
  16. Reactor Structure: oil-immersed with iron tank type ,adjustable inducatance ;


7.Accessories

  • Accessory box for storage accessoires
  • Connection cables of control console and Voltage regulator
  • Connection cables of voltage ragulator and exciting transformer
  • Output cables of exciting transformer
  • System grounding cables
  • Parallel cables of the reactor
  • HV output cables(reactor to divide,divider to test object)
  • HV measuring cables ( the signal output cables of voltage divider )
  • A final test report, a quality Certificate ,a user manual and a packing list are offered .


8.1. Other typical model for Hydroelectric generator and main performance from Fanke High-voltage

SN Project Name

Rated capacity of generator

Typical model supplied of test set Country Order Qty.
1 Three Gorges Hydropower Station 700MW Hydroelectric generator CHX-L-2350KVA/55KV China 2set
2 Gezhouba Hydropower Station 170MW Hydroelectric generator CHX-L-1100KVA/40KV China 2set
3 Xiluodu Hydropower Station 770MW Hydroelectric generator CHX-L-2850KVA/55KV China 2set
4 Xiangjiaba Hydropower Station 800MW Hydroelectric generator CHX-L-3750KVA/65KV China 2set
5 Wudongde Hydropower Station 850MW Hydroelectric generator CHX-L-5100KVA/60KV China 2set
6 Baihetan Hydropower Station 1000MW Hydroelectric generator CHX-L-4800KVA/65KV China 2set
7 SON LA Hydropower Station 400MW Hydroelectric generator CHX-L-1125KVA/45KV Vietnam 1set

8.2. Other typical model just for turbine generator or thermal power generator

Model Rated voltage Rated output current Rated output capacity Application for turbine generator or thermal power generator
CHX-L-250KVA/50KV 50KV 5A 250KVA For 300MW and below generator stator
CHX-L-350KVA/50KV 50KV 7A 350KVA For 600MW and below generator stator
CHX-L-600KVA/50KV 50KV 12A 600KVA For 1000MW and below generator stator
Special requirement can be made by order

9. On-site test standard table from IEC60034-1:2017 Rotating electrical machines - Part.1 :Rating and performance

Large Power Generator Test Equipment Power Frequency Resonant Circuit Test

Large Power Generator Test Equipment Power Frequency Resonant Circuit Test

Large Power Generator Test Equipment Power Frequency Resonant Circuit Test

Large Power Generator Test Equipment Power Frequency Resonant Circuit Test

Large Power Generator Test Equipment Power Frequency Resonant Circuit Test


Product Tags:

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