SF6 reference Capacitor - 400kV 50pF compressed gas standard capacitor

Genneal Information:

Compressed air standard capacitor is a necessary instrument in every HV test lab. It is used to measure the capacitance of capacitor, cable, sleeve, insulator, transformer winding, and insulating material, as well as tanδ of dielectric loss. At the same time, it can also be used as HV capacitor for pressure sharing device of HV measuring capacitor. Under certain condition, it can be used as HV coupling capacitor during partial discharge measurement.

Performance

Standard capacitor is used as comparison reference, which is assorted to precise measurement to inductance value, loss, capacitance, and dielectric loss value of HV equipment such as reactor,cable, transformer, sleeve, and capacitors etc. The standard capacitor is equipped with HV pole which can be connected with other HV parts in HV measuring circuit without partial discharge.

Standard capacitor is designed for indoor application, movable.

For extra high voltage, discrete capacitor grading is used to realize linear distribution of electric field,

so as to maintain an ambient humidity above 95% (without condensate water). Standard capacitor

has high voltage endurance and extremely stable humidity and voltage factor.

 

Specification :

  • 50 pF capacity, 400 kV nominal tension, SF6 insulated, electrodes to avoid corona that meets the following specifications.
  • Tangent delta: <10-5
  • Changes in capacity between 0% and 100% voltage: <5*10-5
  • Stability in time: 0.01% / year.
  • Temperature variation: 3 X 10 -5 K-1
  • Pressure variation: <1% / year
  • Frequency variation between 50 Hz and 1 kHz: <10-5
  • Partial discharge <5 pC

 

Tests

- Accuracy of the calibration at its rated operating range: Primary voltage: from 0% to 100% Vn.

- Testing frequency supported at industrial power frequency.

 

Structure:

Ø Insulation sleeve and steel sheet made bottom and cover for casing. Bottom and cover are

fastened on both sides of insulation sleeve with stainless bolts and rings;

Ø Shielding case of capacitor is made of stainless pipe;

Ø HV/LV poles of capacitor is coaxial pole;

Ø Capacitor is equipped with pressure gauge and vent valve.

Ø Capacitor is filled with SF6. Pressure is 450±50kPa at 20 ℃.

Ø Capacitor frame is installed with universal wheel.

Ø External shielding plug socket of capacitor is adaptable to all kinds of bridge plugs

home/abroad.

 

Application conditions:

  • RH: <80%
  • Ambient T: -5~+40℃
  • Altitude: <1000 m
  • Rated voltage 400kV
  • Withstand voltage: 440kV
  • Rated frequency: 50Hz
  • Capacitance: 50pF
  • Capacitance stability: 0.01%/%/year
  • Capacitance value accuracy: <5*10-5
  • SF6 working pressure: 450±50KPa
  • Capacitor tanδ: <1X10-5
  • Capacitance pressure factor absolute value: ≤2.2×10-3/0.1Mpa
  • Capacitance voltage factor absolute value: ≤3×10-5
  • Capacitance temperature factor absolute value: ≤3×10-5/℃
  • Capacitor shall bear 2Xrated air pressure test/72h.
  • Sealing: ≤1% leakage rate/y
  • Electric safety protection: LV pole overpotential protection
  • Gas standard capacitor installation dimension:
  • Base plate: 1650mm*1650
  • Height: 3600mm
  • Weight: <980kg

 

Complete supply:

  • Standard capacitor: 1set
  • Exclusive grading ring: 1piece
  • Exclusive measuring cable: 1piece
  • Junction box: 1piece
  • Factory inspection report: 1copy
  • Certificate: 1copy
  • Technical manual: 2copies
  • 0.05% measurement bridge 1 set



Send product request

To: CNME Intermational Co.Ltd
Your E-mail:
Message text:


Send to other suppliers

Other supplier products

impulse Current test system
impulse Current test system impulse Current test system Impulse Current Test Systems are manufactured for testing equipment applied in medium and high voltage transmission &am...
Shuttle kiln for ceramic products
Shuttle kiln for ceramic products Shuttle kiln for ceramic products Brief introduction of shuttle kiln: shuttle kiln and tunnel kiln are important sintering equi...
SF6 reference Capacitor - 400kV 50pF compressed gas standard capacitor
SF6 reference Capacitor - 400kV 50pF compressed gas standard capacitor Genneal Information: Compressed air standard capacitor is a necessary instrument in every HV test lab. It is used to measure the capacitance of cap...
200Hz /10kvA intermediate frequency generating set
200Hz /10kvA intermediate frequency generating set 200Hz /10kvA intermediate frequency generating set Structure:   One set of  4 KW asynchronous motor (3 phase,50Hz,380V,speed 1430 -1440r...
Oil immersed Current transformer
Oil immersed Current transformer Oil immersed Current transformer   main parameter of  69kv CT Rated current ratio: 2000/1600/1500/1200/1100/800/500/400/300 : 5 A Rated o...
All supplier products

Same products

Power Line Hardware Cable Suspension Clamp performed suspension clamp for ADSS cable
Power Line Hardware Cable Suspension Clamp performed suspension clamp for ADSS cable Seller: Hebei Heiniu Electric Power Fittings Co., Ltd. The Preformed Suspension Clamp are intended for connecting for OPGW Cable and Poles(Towers),...
Good quality high voltage portable earth rod with earth wire
Good quality high voltage portable earth rod with earth wire Seller: Hebei Heiniu Electric Power Fittings Co., Ltd. Place of Origin:Hebei, China (Mainland) Brand Name:Heiniu Specification 0.4kv\10kv\35kv\110kv\220...
China suppliers ADSS damper OPGW spiral vibration damper
China suppliers ADSS damper OPGW spiral vibration damper Seller: Hebei Heiniu Electric Power Fittings Co., Ltd. Place of Origin:Hebei, China (Mainland) Brand Name:Heiniu Model Number:FL Material: PVC plastic C...
Electric fireplace with heater
Electric fireplace with heater Seller: Guangdong fireplacecraftsman technology Co.ltd the advantages of our electric fireplace: 1.Thermostatic temperature control function; ...
Ce Approved wooden Home Furniture LED Lights Electric Fireplace
Ce Approved wooden Home Furniture LED Lights Electric Fireplace Seller: Guangdong fireplacecraftsman technology Co.ltd home decorators collection freestanding electric fireplace heater Electric fireplace logs home d...