TTR Tester

The TTR tester is an innovative product that overcomes the shortcomings of traditional variable-ratio bridge testing. The screen uses a large-screen high-resolution LCD display, and the power supply uses lithium batteries, which is convenient for on-site use.

The product is mainly used in the transformation ratio group test of transformers, and the transformation ratio polarity test of PT and CT. The test speed is fast and the accuracy is high.

After receiving the TTR tester box, open the box and check for damage.

If the shipping box is damaged, or the cushioning material is indented, please notify the shipping company and the sales office.

Please check if you have received the following items in the tester package:

1 tester

1 set of test wires (one set for red and black)

1 charger (8.4V)

1 copy of the printed user manual

1 certificate of conformity and factory test report

uLithium battery power supply or 220V AC power supply self-adaptive, one charge, can continuously test more than 100 transformer ratio groups, the test process is simple and convenient.

uBlind test function, that is, the transformation ratio and group test are performed when the high and low voltage connection mode is not known.

uIn addition to the test of conventional transformers, Z-type transformers, and PT samples, the CT ratio polarity test function is added, and the application field is wider.

uWide measuring range, high precision, the measurement range of transformation ratio can reach 10000, and the test accuracy is guaranteed to be 0.3% when the highest value is 10000.

uIt has complete protection functions such as reverse connection protection and output short-circuit protection.

u5.6-inch large industrial-grade high-brightness color LCD screen, the display is still clearly visible under strong sunlight.

uEquipped with thermal printer for easy data printing.

uWith local storage and USB storage, it is convenient for data storage.

Range: 0.9-10000

Accuracy:

±(reading*0.1%+2 words) (≤500)

±(reading*0.2%+2 words) (500≤3000)

±(reading*0.3%+2 words) (≤3000)

Resolution

0.9-9.9999 (0.0001)

10-99.999 (0.001)

100-999.99 (0.01)

1000-9999.99 (0.1)

10000 and above (1)

Conditions of Use

Power supply: built-in lithium battery or external charger, charger input 100-240VAC, 50Hz/60Hz

Charging voltage: 8.4V

Charging current: ≤2A

Charging time: about 3 hours

Use time:> 8 hours

Before using the instrument for the first time or after a long period of storage or when the battery is low, please charge the battery for at least 3 hours with the included charger, and you can continue to use the tester while charging. After the battery is fully charged, the charger indicator turns from red to solid green.

High-voltage test terminal: yellow, green, and red three-color terminal blocks, corresponding to the three phases of A, B, and C, respectively, and correspondingly connected to the side of the red test line with the elastic rod. The other end of the test line has the yellow, green, and red test clamps. Correspondingly connect to the three phases A, B, and C on the high-voltage side of the transformer under test; connect the yellow and green test wires for single-phase testing.

Low-voltage test terminal: yellow, green, and red three-color terminal blocks, corresponding to the three-phase a, b, and c respectively, and are connected to the side of the black test line with the elastic rod. The other end of the test line has three-color test clamps of yellow, green and red. Correspondingly connect to the three phases a, b, and c on the low-voltage side of the transformer under test; connect the yellow and green test wires for single-phase testing.

Display: 5.6-inch large industrial-grade high-brightness color LCD screen, displaying operating menus and test results.

Single-phase transformer or single-phase PT test wiring

The yellow and green test clamps of the red test line at the high voltage test end are connected to the high voltage end of the tested product; the yellow and green test clamps of the black test line at the low voltage test end are connected to the low voltage end of the tested product.

Single-phase CT test wiring

The yellow and green test clamps of the red test line at the high-voltage test terminal are connected to the secondary side of the tested product; the yellow and green test clamps of the black test line at the low-voltage test terminal are connected to the primary side of the tested product.

Three-phase transformer test wiring

The yellow, green, and red test clamps of the red test line at the high-voltage test end are connected to the A, B, and C phases of the high-voltage end of the test product; the yellow, green, and red test clamps of the black test line at the low-voltage test end are connected to a, b of the low-voltage end of the test product , C-phase.

Smart power management

When the instrument is not in operation for a long time, the LCD backlight will be automatically dimmed to save power; the instrument has a low-battery charging prompt function and over-discharge protection; when the power of the instrument is low, it can be charged with a charger, and the instrument can be used normally during the charging process .

Printer instructions

The printer buttons and printer indicator lights are integrated. After the printer is powered on, the indicator light is always on when it is normal, and the indicator light flashes when there is no paper. Press the button once and the printer feeds paper.

Printer paper change: pull out the rotating wrench and open the paper compartment cover; load the printing paper and pull out a piece (exceeding a bit of the paper tearing teeth), the direction of the paper is the liquid side (smooth side) upwards; close the paper Compartment cover, print head paper feed shaft press the printing paper, press the print head paper feed shaft back to the print head with a little force, and push the rotating wrench in to reset.

uFor transformers with multiple tap positions, input the rated high and low voltage voltage values, tap spacing, and rated gears so that the test results can automatically calculate the error value and the tap position where the tap switch is located.

uFor transformers with 19 levels of on-load tap changer, if the taps of 9, 10, and 11 are the same value, the instrument should input 9 when inputting the rated tap position. At this time, after the 12 tap position, the instrument displays that the tap position is higher than the actual tap position. The location is small 2.

uThe tap position of this instrument is set according to the high-voltage side voltage regulation design, assuming that 1 tap is the highest voltage gear. If the voltage is reversed or the tap switch is on the low-voltage side transformer, the tap position and actual tap position will be displayed Upside down.

uThe transformation ratio on the nameplate of a three-phase transformer refers to the ratio of the line voltages of windings with different voltages. Therefore, for transformers with different wiring methods, the transformation ratio and the turns ratio have the following relationship: three-phase transformers with the same primary and secondary wiring The voltage ratio is equal to the turns ratio; when the primary and secondary wiring are different, the turns ratio of the Y--d wiring is equal to the transformation ratio divided by the turns ratio of the D--y wiring is equal to the transformati