Strong Anti-jamming Standard Calibration Instrument Calibration Device for Three-phase Turns Ratio Tester

Strong Anti-jamming Standard Calibration Instrument Calibration Device for Three-phase Turns Ratio Tester

Product Introduction

This three-phase transformer ratio & group calibration device is a professional standard equipment in the power detection field, with 0.01 class accuracy, supporting 1.00000-10000 wide ratio range and seven connection groups, strong anti-interference and flexible dual-mode switching, providing reliable guarantee for equipment calibration.

Technical Specifications

1.General technical specifications for the entire machine

① Voltage ratio measurement accuracy class: 0.01 class

② Input voltage range: 0V to 240V

③ Output voltage ratio range: 1.00000～10000

④ Output group ratio range: 10,100,1000,

The output ratio for Y/Y and D/D modes is 10,100, and 1000 as specified above.

But if it's another connection method, it's related to √3.

In the Y/D connection, the original ratio is multiplied by √ 3, resulting in values of 17.732,173.2, and 1732.

In the D/Y connection method, the original ratio is reduced by √3,

resulting in values of 5.7735,57.735, and 577.35.

The Y/z connection method is based on the original ratio of 5.7735,57.735, and 577.35.

The D/z ratio is 3.3333,33.333,333.33, which is 1/3 of the original ratio.

⑤ Output group ratio precision: 0.05%

⑥Connection group settings: D/y, D/d, D/z, Y/y, Y/d, Y/z,

Group Calibration Section

Features and Advantages

Precision & Compliance Assurance

• Voltage ratio measurement accuracy of 0.01 class and output group ratio precision of 0.05%, ensuring accurate and reliable calibration results to meet the metrological requirements of professional test equipment;

• Strictly complies with GB1094.1-1996 General Rules for Power Transformers and JJG314-2010 Measurement of Voltage Transformers, adapting to mainstream global industry standards;

• Passive voltage ratio standard design, no active signal interference, and data stability during calibration is superior to similar equipment.

  
  

Wide Ratio Coverage & Precise Adjustment

1. Output voltage ratio range of 1.00000～10000, covering the calibration needs of low-voltage to high-voltage transformers, adapting to basic ratios such as 10, 100, 1000 and derived ratios;

2. Equipped with seven decimal adjustment dials (10⁻¹ to 10⁻⁷), allowing customized precise ratio setting without complex calculations, directly corresponding to reciprocal 1/Kx adjustment;

3. Intelligent ratio adaptation under different connection groups (e.g., multiply by √3 for Y/D connection, divide by √3 for D/Y connection), automatically matching universal industry ratio conversion logic.

   
   

Full-Scenario Connection Group Support

Covers seven core connection groups (D/y, D/d, D/z, Y/y, Y/d, Y/z), adapting to global mainstream three-phase transformer calibration scenarios; Exclusive setting channel for Z-type groups, meeting the calibration needs of transformers with special winding structures without additional adaptive accessories; Linked adjustment of group and ratio, automatically locking parameters after setting to ensure consistency of phase and ratio during calibration.

Flexible Switching Between Two Working Modes

1. Calibration mode: Act as a standard device to calibrate external ratio & group testers, switch to "calibration" gear to output stable standard signals;

2. Self-test mode: Switch to "self-test" gear, the device acts as an independent inductive voltage divider to realize self-precision verification, ensuring long-term use reliability;

3. Mode switching requires no complex wiring, only operated by the rear panel switch, adapting to both laboratory and on-site calibration scenarios.

Contact us

Contact Person: Christine Gou

Whatsapp/Wechat: +86 15123029885

Mobile: +86 15123029885

E-mail: gold05@hy-industry.com