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- Turns Ratio Tester
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- CT PT Analyzer
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0102030405
Huazheng HZCT-IV Power frquency CT PT Analyzer
I. Main Technical Features
1.Full Automatic Test Instrument
Simply set the highest output voltage and maximum output current, and the instrument will automatically boost from zero to perform various tests. It automatically records test data, the volt-ampere characteristic curve, 10% and 5% error curves, and calculates the turning point values. This eliminates cumbersome steps like manual voltage regulation, manual recording, and curve tracing, greatly improving testing efficiency. The test results can be stored on the computer, printed on-site, or copied to a USB drive for later processing on a computer. The operation is fast, simple, convenient, and easy to master.
2.Full Functionality
The device offers the following functions:
CT Test:
Volt-ampere characteristic curve
Automatic calculation of curve inflection points
5% and 10% error curves
Ratio and polarity
Differential and angular error measurement
Secondary circuit load testing
Secondary winding AC withstand voltage
DC resistance test of secondary winding
Current flow test
PT Test:
Volt-ampere characteristic curve
Automatic calculation of curve inflection points
5% and 10% error curves
Ratio and polarity
Differential and angular error measurement
Secondary circuit load testing
Secondary winding AC withstand voltage
DC resistance test of secondary winding
3.Output Keeping
The "Keeping Boost" function is used for measurement, detection, and secondary AC withstand voltage testing. It also facilitates the secondary loop check.
4.True Effective Value Sampling
All voltage and current signals are sampled as true and valid values, ensuring accuracy. Please use a true RMS meter for correction.
5.Single Power Supply, Easy to Operate
The device only requires a single input power supply of AC 220V, eliminating the need for the 380V power supply used by some manufacturers to meet technical requirements.
6.U-Disk Data Save
Test data can be transferred to a PC via a USB drive for processing, displaying, storing, and printing data and curves. This greatly simplifies report generation for users.
7.Date and Clock
The instrument includes a built-in system clock, automatically recording the test time during measurements, which helps in storing and viewing test records.
8.No-Contact Test, High Security
As a fully computerized device, it eliminates manual contact after setting, enabling fully automated testing. This allows the test personnel to stay safely away from the high-voltage circuits, ensuring their safety.
9.Large Output Capacity
The instrument has a high output capacity: AC voltage output up to 2000V, short-time current output up to 25A, and maximum current up to 600A.
10.Large 8-Inch Color Touchscreen LCD
The device features an 8-inch LCD screen with a resolution of 800x600, high definition, and full-color touch operation. The intuitive interface displays the volt-ampere curve and test data clearly. It also includes a built-in printer that can print curves and test data at any time.
11.Touch Screen Operation
The device uses advanced touch technology for operation, eliminating traditional buttons, switches, and knobs. This results in a simple, convenient interface with a long service life.
12.Ultra-Large Capacity Data Storage
Each function test can store up to 50 sets of test data. The data is not lost when power is turned off and can be printed or uploaded to a computer after testing. The instrument also supports data storage on a USB drive, allowing unlimited storage of field test records.
II.Technical Parameters And Hardware Structure
1、Technical Parameters
|
Power input voltage |
AC 220V AC 220 V |
Resolution ratio |
|
|
CT volt ampere characteristic test |
Secondary current secondary voltage |
0～2500 V，0～20A |
1mV、1mA |
|
CT variable ratio error, angle error test |
Primary side current |
0～1000A |
1mA |
|
Secondary side current |
0～5 A |
1mA |
|
|
CT secondary loop load |
Secondary side current |
0～5 A |
1mA |
|
Secondary-circuit impedance |
0～10Ω |
0.001Ω |
|
|
CT primary flow |
Primary side current |
0-1000A |
1mA |
|
PT Volt-ampere characteristic test |
Output voltage |
0～200 V |
1mV |
|
Output current |
0～10 A |
1mA |
|
|
PT variable ratio, ratio angle error test |
Primary side voltage |
0～2500 V |
1mV |
|
Secondary rated voltage |
100V,57.7V,100/3V |
1mV |
|
|
Accuracy class |
Volt ampere characteristic test |
< 0.5% |
|
|
5% and 10% error curve |
< 1% |
||
|
Ratio test |
< 0.5% |
||
|
Angle error test |
< 1% |
||
|
Secondary loop load test |
< 0.5% |
||
|
Power supply voltage |
AC 220 V 50～60 Hz |
||
|
Working environment temperature |
-10℃ - +50℃ |
||
2、Basic Structure And Composition
The host device includes an automatic booster, a built-in flow device, a microcomputer control system, and an 8-inch color LCD screen in Chinese, with a resolution of 800x600. It also features a micro printer, touch operation, USB connectivity, and more. The host device can be directly used for the volt-ampere characteristic test and inflection point calculation of CTs, including the 5% and 10% error curves, variable ratio polarity test, contrast test, angle difference test, secondary circuit load testing, and a flow-through test. It also supports volt-ampere characteristic tests and variable ratio polarity tests for PTs, as well as secondary side testing.
III.Common Fault Handling And Usage
1, If the device has no current and voltage output, please check the insurance of the panel power outlet inside (20A) is disconnected. If it is,the single stranded copper wire with the same thickness has been used for welding. Of course, it is best to replace insurance of the same model.
2, Do ratio test, if one side of a current rise, no current secondary side current, Multimeter measuring instrument test CT ratio secondary side, so secondary side is pathways: 1) please check whether the CT secondary side open circuit; (2) please check whether phase of the secondary side wiring is the same with one side .
3, Host each function module can save up to 50 sets of data, the instrument without power ,data can be permanently stored in the data, in order not to affect your normal work, please print or upload data in a timely manner to save the computer.
4, Currently on the market , other manufacturers will add a core function of demagnetization in the device, this function is in fact secondary applying an AC voltage of CT, and then return ,that is demagnetization. In fact, it is the volt ampere characteristics of the test, you can check relevant information.
5.1000A models, Inside the wiring package will configure four high-current conductor, respectively, two 50 square, two 35 square root, less than 600 a, you just need two lines of 50 square to normally rise, higher than 600 a, need to another group of wires 35 square in parallel using.
Packing List
|
No. |
Item |
Qty |
|
1 |
Main engine |
1 |
|
2 |
Primary red large current wire with clip |
1 |
|
3 |
Primary black large current wire with clip |
1 |
|
4 |
Secondary test lead |
4 |
|
5 |
Clip |
6 |
|
6 |
Fuse pipe |
3 |
|
7 |
Ground lead |
1 |
|
8 |
Power line |
1 |
|
9 |
printer paper |
2 |
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