Products

HV tan delta measuring device

HV Tan δ measuring system is used for power transformer, HV mutual inductor, arrester, HV switch, HV XLPE cable and so on. It judges quality of test sample by HV Tan δ test to improve the quality.

  • 产品描述
  • 左上角内容
  • Overview

    HV capacitance bridge is a common equipment. With inner high precise current comparer, the whole equipment is of high accuracy, more digits, good linearity and little effect by surrounding temperature and humidity.Computer in the device can process data automatically, and display capacitance, Tanδ, measuring voltage and curren (Icn)of standard capacitor. It is a high accurate, stable and widely used HV bridge.

    Main performance:

    HV bridge is laboratory precise bridge, the main principle is current comparer. It is with high ratio precision and stability. The test is more intuitional by computer data processing. This bridge can work with many HV standard capacitors. It is used to test capacitance and Tan δ for power cable, HV bushing, power capacitor, mutual inductor and so on. It measures capacitance and dielectric dissipation factor of liquid and solid insulators. It can also measure ratio difference, angle difference of HV transformer and voltage transformer. Current transformer can be connected with bridge to increase measuring range, the bridge is four terminals measuring and has lead-wire compensation device, and it reduces additive error of wiring resistance. This bridge can measure inductance and Q value of reactor.

    Main technical parameter:

    Bridge capacity ratio Cx/Cs(rated ratio is 1:1) is 0 to 1.111110, step 0.000001, variation range of magnification (K) 1000, 500, 200, 100, 50, 20, 10, 5, 2, 1 (Total 10 grades). The capacitance testing range is up to capacitance of standard capacitor-Cs Cx=Cs · K · (Cx/Cs)
    Measuring precision of capacity ratio:

    Indicator of capacity ratio is not more than when first dial is full

    - When tgδ<3×10-3 ±0.00005
     tgδ _ 3×10-3 ±0.00005±0.005×tgδx。

    - Bridge tgδ range: -0.111110 to +0.111110, step is 0.000001

    - Measuring precision of tgδx is below ±0.5%tgδx±5×10-5

    - Test capacitance display: Cx=(0.1~1111.1110)Cn

    - Indication of 6 significant digit of testing capacitance

    - Indication of testing capacity tanδ: tgδ=-1.11x10-1 to 1.11x10-1

    -  Indication is 3 significant digit of testing capacity tanδ and 
     work with scientific notation

    Capacity and precision:

    - Capacity: ±0.5%×tgδx±0.00005
    - Tanδ: ±0.5%tgδx±5×10

     

     

     

     

HV tan delta measuring device

HV capacitance bridge is a common equipment. With inner high precise current comparer, the whole equipment is of high accuracy, more digits, good linearity and little effect by surrounding temperature and humidity. Computer in the device can process data automatically, and display capacitance, Tanδ, measuring voltage and current(Icn) of standard capacitor. It is a high accurate, stable and widely used HV bridge.

产品系列: CABLE SYSTEM PRODUCTS

  • 产品描述
  • 左上角内容
  • Overview

    HV capacitance bridge is a common equipment. With inner high precise current comparer, the whole equipment is of high accuracy, more digits, good linearity and little effect by surrounding temperature and humidity.Computer in the device can process data automatically, and display capacitance, Tanδ, measuring voltage and curren (Icn)of standard capacitor. It is a high accurate, stable and widely used HV bridge.

    Main performance:

    HV bridge is laboratory precise bridge, the main principle is current comparer. It is with high ratio precision and stability. The test is more intuitional by computer data processing. This bridge can work with many HV standard capacitors. It is used to test capacitance and Tan δ for power cable, HV bushing, power capacitor, mutual inductor and so on. It measures capacitance and dielectric dissipation factor of liquid and solid insulators. It can also measure ratio difference, angle difference of HV transformer and voltage transformer. Current transformer can be connected with bridge to increase measuring range, the bridge is four terminals measuring and has lead-wire compensation device, and it reduces additive error of wiring resistance. This bridge can measure inductance and Q value of reactor.

    Main technical parameter:

    Bridge capacity ratio Cx/Cs(rated ratio is 1:1) is 0 to 1.111110, step 0.000001, variation range of magnification (K) 1000, 500, 200, 100, 50, 20, 10, 5, 2, 1 (Total 10 grades). The capacitance testing range is up to capacitance of standard capacitor-Cs Cx=Cs · K · (Cx/Cs)
    Measuring precision of capacity ratio:

    Indicator of capacity ratio is not more than when first dial is full

    - When tgδ<3×10-3 ±0.00005
     tgδ _ 3×10-3 ±0.00005±0.005×tgδx。

    - Bridge tgδ range: -0.111110 to +0.111110, step is 0.000001

    - Measuring precision of tgδx is below ±0.5%tgδx±5×10-5

    - Test capacitance display: Cx=(0.1~1111.1110)Cn

    - Indication of 6 significant digit of testing capacitance

    - Indication of testing capacity tanδ: tgδ=-1.11x10-1 to 1.11x10-1

    -  Indication is 3 significant digit of testing capacity tanδ and 
     work with scientific notation

    Capacity and precision:

    - Capacity: ±0.5%×tgδx±0.00005
    - Tanδ: ±0.5%tgδx±5×10