1 YDB-IIIFully automatic transformer ratio testerProduct Overview

In the production process of semi-finished and finished power transformers, before the newly installed transformers are put into operation, according to the preventive testing regulations of the Ministry of Electric Power of China, it is required to regularly conduct turns ratio or voltage ratio tests on the operating transformers.

II YDB-IIIFully automatic transformer ratio testerFeatures

lWide testing range, with the highest measurable variable ratio10000；

lBuilt in three-phase digital power supply to improve testing stability.

lSmall size, light weight, fast testing speed,Complete the three-phase test within 10 seconds;

lTest of T-shaped connection transformer;

lCapable of blind variable ratio and group testing;

lNon power down clock and date display, data storage function(You can choose to save data to a USB drive);

lHigh and low voltage reverse connection protection, short circuit protection function;

lThermal printer output function, fast speed and low noise;

lFully transparent large screen LCD that can display clearly in sunlight.

三、 YDB-IIIFully automatic transformer ratio testerTechnical Specifications

measurement range 0.9～10000

part distinguish rate minimum0.0001

accurate indeed degree Level 0.2

output voltage 160V、10V

Overall dimensions 345mm×295mm×175mm

Instrument weight 5kg

4 YDB-IIIFully automatic transformer ratio testerTerms of Use

ambient temperature -10℃～50℃

ambient humidity ≤85%RH

working power supply AC220V±10%

power frequency 50Hz±1Hz

5 YDB-IIIFully automatic transformer ratio testerPanel Introduction

1. High voltage side Corresponding to the high voltage side of the tested transformerA. B, C three-phase.

2. Low voltage sideCorresponding to the low voltage side of the tested transformera. B, c three-phase.

3. SwitchUsed to turn on or off the test power supply of the device.

4. Grounding post Before conducting any tests, please safely ground the grounding pole to avoid the risk of electric shock.

5. Printer Print experimental data.

6. LCDDisplay function, white background with black text, can be clearly displayed in sunlight.

7. Keyboard Used for operating instruments.

Øconfirm Confirm the selected project

Øreturn Return to the previous menu

Østorage Save data and store test data in the memory of the device host or an external deviceUSB drive

Øprint Print test result data

Ø↑↓ Select items to move up or down or add or subtract 1 from the data to be modified

Ø← → Select whether to move the item left or right or move the data bit to be modified left or right

Øchoice Different interfaces have different functions

8.U S B pick upUSB flash drive, save data.

9.RS232 Used for upgrading program usage.

Precautions

1. Do not place this instrument on an unstable platform or desktop to prevent it from falling and being damaged.

2. The power supply used is~220V power supply and cannot be connected to~380V.

3. Do not let any foreign objects fall into the chassis to avoid short circuits.

4. Before the experimentThe grounding post on the device panel should be reliably grounded to prevent danger