GDHT-6D Automatic Transformer CT/PT Calibration Device

• Type: Universal Testing Machine
• Accuracy Grade: 0.5
• Load Way: Electronic Load
• Loading Method: Dynamic Load
• Display: Digital
• Control: Computer Control
• Model NO.: GDHT-6D
• Weight: 100-500Kg
• Power Source: AC220V
• In-phase component (%): 0.0001~200.0 Resolution: 0.0001
• Coaxial fraction (′): 0.001~700.0 Resolution: 0.001
• Transport Package: Standard Export Plywood Case
• Specification: ISO9001
• Trademark: HV Hipot
• Origin: Wuhan, China

Product Description

GDHT-6D Automatic Transformer CT/PT Calibration Device

General Information
   
The GDHT-6D automatic CT/PT calibration device is a novel automatic detection instrument. It adopts unique circuit principle and DSP technology to directly decomposed the error signal of the CT/PT, and after proper calculation, the percentage, in-phase error and quadrature error of the CT/PT are displayed in digital quantities at the same time.
The operation is easy, reading is intuitive and the measurement is rapid, which can reduce the power consumption and labor intensity; small size, light weight, portable and on-site testing.

Features

Transformer calibration system can realize the functions of automatic pressure regulation, automatic fixation, automatic measurement and automatic management. Meet the requirements of verifying S level current transformers and power transformers.
 

1. Verification of error check of current transformers of 0.2S and below or voltage transformers of class 0.2 and below;
2. Calibration table is beautiful and elegant;
3. Automatic voltage regulation: the output current and voltage of the programmable source have real-time measurement and display function;
4. Automatic positioning and shifting:

According to national regulations, automatically adjust the pressure to the measuring point; good stability, short time, good repeatability;

1. Automatic measurement and verification:
2. To achieve automatic verification, according to the national verification regulations, the device automatically switches the range according to the test data, and automatically performs full-load and light-load measurements.
3. Manual measurement and verification: It can realize the selection of automatic/manual measurement and verification.
4. Automatic switching of current and voltage load boxes;
5. The platform can automatically switch the primary and secondary wiring of the standard transformer according to the instructions issued by the computer, without manual participation in wiring;
6. The calibrator can be used alone, which is convenient for debugging, verification and on-site use;
7. The platform has perfect alarm and protection functions. If unsafe factors such as overcurrent, overvoltage, power short circuit occur, the platform automatically reduces the current, lowers the voltage, and issues an alarm signal;
8. Data communication:

The platform can be connected to the SG186 marketing business application system to realize the automatic transmission of data to the SG186 marketing business application system database; and can be automatically stored to the computer (software), automatic data storage and power-off protection; the supplier provides free interface software, free upgrades, maintain.

1. Automatically print certificates: various certificate files required by the regulations can be output as required;
2. During the verification process, it is easy to view the error, and the measured error curve and error range can be displayed;
3. The software is responsible for free lifetime upgrades and can achieve network management,
4. CT automatic demagnetization:

The platform body is equipped with demagnetization resistance, without manual operation, the demagnetization experiment is completed automatically;

1. Transformers are easy to disconnect during the calibration process.
2. During the verification process, it is easy to see the error, and the measured error curve and error range can be displayed.
3. It has a complete online help system, all buttons and toolbars have operation tips, and all functions and operations have detailed help instructions;
4. Program-controlled source safety protection:
5. The program-controlled source has a self-locking protection function to ensure the safety of the equipment; all operations have dual hardware protection and polarity protection and variable ratio error judgment functions and can give a prompt interface, and can press the protection switch to terminate the current operation under special circumstances;
6. The control software has a friendly interface, easy operation. The software automatically controls the calibrator, calibration station, and test station;
7. Automatic data management:
8. The software automatically manages the error data according to the requirements of the regulations;
9. Flexible operation mode: manual, automatic, free choice; there is an audible prompt when the error is exceeded during automatic calibration.
10. Strong software network function:
11. Strong software compatibility, easy to contact with different systems;
12. Software platform:
13. Operating system uses WINDOWS operating system.
14. Graphic user interface, multi-window display, menu-driven, mouse operation.
15. The database provides interface data to facilitate user maintenance and secondary development.
16. It has a statistical function, which can be counted according to the office number, factory number, verification time, tester, and manufacturer.
17. Can effectively protect and process data;
18. Ensure that the verification data is saved in a timely manner and saved in a standard database format;
19. The hard disk data can be backed up in time;
20. Provide procedures for querying and printing on other machines;
21. The verification scheme and certificate format can be set according to the user's needs. The verification certificate can be printed automatically;
22. According to different tests, intelligently judge the error data and remove gross errors, automatically average and round the errors according to the rules of rounding, and there is an obvious alarm display when the error exceeds the limit;
23. Perfect online help system, all buttons and toolbars have operation tips, and all functions and operations have detailed help and instructions;
24. Ensure stable and reliable communication.
25. Device can measure impedance and admittance.

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Specifications

 

Environment Conditions
Humidity	5ºC~40ºC
Relative humidity	<80% (25ºC)
Altitude	<2500m
Power supply	AC220V±5V
Measurement Range
In-phase component (%)	0.0001~200.0 Resolution: 0.0001
Quadrature component (')	0.001~700.0 Resolution: 0.001
Resistance (Ω)	0.0001~20.0 Resolution: 0.0001
Admittance (ms)	0.0001~20.0 Resolution: 0.0001
Basic Error
In-phase component	ΔX=±(X×2%+ Y×2%±2 digitals)
Quadrature composition	ΔY=±(Y×2%+±X×2%×34.38)±5 digitals
	"X", "Y"-display value of the instrument
	5 words"-quantization error of the instrument
Dial indicator	level 1
Working Scope
Current	(1%-149%) In (In=5A)
	(5%-149%) In (In=1A)
	(1%-200%) In (In=5A)
	(5%-200%) In (In=1A)
Work load	Current: To-Tx<0.12Wcosφ=1.0
Dimensions (mm) horizontal table	1500 (L) × 780 (W) × 1030 (H)
Dimensions (mm) vertical table	670 (L) × 630 (W) × 1570 (H)