JYT-A is a fully automatic three-phase testing device designed specifically for the turn ratio of power, distribution,and instrument transformers, it accurately measures the voltage on the no-load transformer windings by applying voltage to the high-voltage winding and then determines the transformer turn ratio by displaying the ratio of these voltages, JYT-A is based on the most advanced technology available today, it can be used for testing single-phase and three-phase transformers, CT, PT, CVT, Z-type connections, and transformers with neutral points, including those with and without taps, meeting the requirements of the IEC 60076-1 standard.
JYT-A also can test different types of transformers (such as single-phase, delta to star, star to delta, delta to delta, star to star,delta to zigzag, etc.), and no need to switch the test connection cables during testing; the test can be performed directly, it can automatically compare the test results with the nameplate voltage of the transformer input by the user, calculate the turn ratio deviation, and print out the error percentage for each test. Even if the user does not input anydata, it can still accurately measure the transformation ratio. JYT-A features high and low voltage reverse connection protection, transformer short circuit, inter-turn short circuit protection, and a very high ability to eliminate electrostatic and electromagnetic interference in high-voltage electric fields, effectively ensuring the accuracy of the test results
FUNCTION INTRODUCTION:
1.The interface adopts intelligent touch mode, which is simple and convenient to operate.
2.High stability sine wave power supply, the test voltage is automatically adjusted according to the load.
3.The test data is accurate when the generator is powered,if the quality of the power supply in the field is poor.
4.The test speed is fast.The three-phase turns ratio test can be completed in one wiring, which only takes 10 seconds.
5.CT, PT, CVT and Z-connection transformers can be tested.
6.It is suitable for ratio measurement from distribution transformers to 1000KV transformers, current transformers (CT), voltage transformers (PT) and Z-type transformers.
7.A variety of short circuit measurement methods are set inside, which is more convenient for fault judgment.
8.No power-off clock and date display, 200 sets of data can be saved in the machine, and the power-down data will not be lost.
9.Large color LCD display, clear and easy to read data. RS485 communication interface and U disk storage interface.
10.The instrument has the function of high and low voltage reverse connection protection, and has the function of transformer short circuit and inter-turn short circuit protection.
11.Bluetooth communication function(optional).
JYT-A Connection with Transformer:
JYT-A turn ratio tester Specification:
Display digits
5 bits
Output voltage
160V
(AC power supply)
20V
(AC power supply).
Max 160V
(DC power supply)
Test Range
0.9-10000
0.9-1000
0.9-10000
Accuracy
<2000
±0.1%
≤200
±0.1%
<2000
±0.1%
2000-10000
±0.3%
200-1000
±0.3%
1000-5000
±0.3%
Minimum resolution
0.0001
power supply
AC100-240V,50/60Hz
lithium battery
Test data storage
200 sets
Operating temperature
－20℃～40℃
relative humidity
≤ 80%, non-condensing
volume
285 mm * 218 mm * 158 mm
net weight
5kg
turn ratio tester, transformer test instrument, winding resistance tester, transform
