SF6 reference Capacitor - 400kV 50pF compressed gas standard capacitor - China Compressed air standard capacitor - Exportimes
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SF6 reference Capacitor - 400kV 50pF compressed gas standard capacitor

USD 1.00-1.00 / Set/Sets | 1.00 Set/Sets (Min. Order)

Processing Time: 1 Days - 60 Days
Packaging Details: STANDARD EXPORTING PACKAGE

Port: Shanghai / Shenzhen / Qingdao / Ningbo / Other

Payment Terms: L/C , T/T , other

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Basic Information

Brief description

Compressed air standard capacitor

Detailed description



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

CNME International Co., Ltd. (abbr. as CNME) is a joint-stock and Hi-Tech company with the authorized license for international engineering and foreign trade. Established in 2002, CNME works especially in international projects and foreign trade, and as a core division of China Qiyuan Engineering Corporation (abbr. as CQEC) which is one of the ten strongest scientific and technological companies in the State-owned Assets Supervision and Administration Commission of the State Council of China (SASAC).

CNME’s business activities cover national and international engineering, turn-key services, foreign trade, equipments supervision and so on. The activities consist of the industries of high voltage power transmission and distribution, diesel power generation, thermal power generation, high voltage and mass capacity testing system, middle and low voltage test system, environmental protection, engineering survey, bulk cargo terminal, cement facilities, mine exploitation, highway, sugar making, special electrical engineering equipments, industrial kilns and furnaces , etc.

CNME has formed an experienced technical staff for the related business. In the past decade, CNME has developed about 100 patents and know-how techniques for the design and engineering of heavy duty workshops, high voltage power transmission and distribution systems, diesel generation stations, high voltage and mass capacity test laboratory, large and high air-conditioned workshops, environmental protection and control, special electrical engineering equipments, industrial kilns and furnaces, engineering survey and petrology, power supply and distribution of bulk cargo terminals and so on. Therefore, CNME has been honored with lots of awards from the state, ministry and province authorities for the up-to-date technology and excellent projects.

CNME has also made great achievements in foreign trade. Technology based export and techniques output guided export have become our major trade style. So far, CNME has exported know-how techniques, complete equipments, materials and technical services to around twenty countries and regions including Germany, Portugal, Turkey, Korea, Syria, Pakistan, Vietnam, Bangladesh, India, Indonesia, The Philippines, Thailand, Brazil, Columbia, Egypt, Sudan, Angola, Malawi and so on. 

CNME has established a strict quality control system to ensure the quality of projects, products and technical services. In 2004, CNME has been certificated with the latest version ISO9001-2000 certificate. 

CNME sticks to the principles of efficient management, innovative technology, and satisfactory services to clients. CNME is willing to share our talent, technology and experience with clients all over the world!

For detailed achievements of CNME, please refer to our brochures and website

 

Basic Information

  • Business Type:
    Trading Company
  • Main Products:
    Generation Stations, Electrical Engineering Equipment, Electrical Lab Design And Solution, Power Plant Design Factory, China-cnme
  • Location:
  • Total Employees:
  • Year Established:

Trade Information

  • Top 3 Markets:
  • Accepted Payment Currency:
  • Nearest Port:
  • Average Lead Time:
    0
  • Overseas Office:
    No

Company Pictures

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

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