The BOT-2000W PT wireless secondary voltage drop and load tester is a brand new intelligent wireless testing instrument designed and developed by our company for automatic testing of secondary voltage drop/load of voltage transformers It completely replaces the traditional secondary voltage drop/load tester, eliminating the need for long voltage testing cables and greatly avoiding PT secondary short circuit accidents Created favorable conditions for the safe operation of the substation

Excessive comprehensive error in electric energy measurement is a common key problem in electric energy measurement The measurement error caused by voltage drop in the secondary circuit of voltage transformers is often the biggest factor affecting the comprehensive error of electrical energy measurement The error caused by the secondary voltage drop of a voltage transformer refers to the percentage of the amplitude difference of the voltage between the secondary terminal and the load terminal of the voltage transformer relative to the actual secondary voltage, as well as the phase difference between the two voltages

This instrument has the advantages of small size, light weight, high measurement accuracy, good stability, easy operation and learning, simple wiring, convenient testing and recording, greatly improving work efficiency It uses a large screen LCD as the display window, with a graphical menu operation and Chinese character prompts. It integrates multiple parameters into one screen display interface, with a user-friendly human-machine dialogue interface. It is easy and fast to use, and is the preferred product for power users at all levels

Product alias

PT wireless secondary voltage drop and load tester, wireless secondary voltage drop and load tester, secondary voltage drop and load tester, secondary voltage drop tester

Instrument features

1. Automatically measure the secondary voltage drop of three-phase three wire or three-phase four wire voltage transformers through wireless means, without the need for a long voltage testing line to be laid from the instrument to the testing end in the usual way. This can avoid unnecessary short circuit faults caused by excessively long lines, which is exactly what voltage transformers should avoid; Moreover, sometimes this voltage testing line needs to cross the highway, and if there are unattended vehicles passing by, the line may be crushed. The wireless secondary voltage drop tester effectively avoids such situations Automatically calculate the ratio difference, angle difference, and comprehensive error of the three phases

2. It can automatically detect and store measurement error data caused by test wires under various wiring methods, and automatically correct it in future tests

3. Specially designed software correction function, which can achieve accuracy correction without hardware adjustment, and can be verified on-site by various levels of power testing and research departments

4. Built in large capacity rechargeable battery pack, which can be powered by the instrument's internal battery pack in the absence of 220V AC power outdoors. Equipped with a fast automatic charger, it can quickly charge the battery pack

5. The battery remaining percentage indicator function is not just a simple power loss alarm

6. Large screen, high brightness LCD display, full Chinese character menu and operation prompts for friendly human-machine dialogue, touch buttons for easier operation, wide temperature LCD with brightness adjustment, suitable for winter and summer seasons

7. Users can print out the results of the test data at any time through a micro printer

8. The test result storage function can store 200 sets of test data

Technical parameters

1. Usage environment

(1) Environmental temperature: -10 ℃~40 ℃

(2) Relative humidity: ≤ 80%

2. Measurement accuracy

The measurement accuracy of this instrument is level 1

Differential ratio: Δ f=± (1% × f+1% × δ+0.01) (%)

Angle difference: Δ δ=± (1% × f+1% × δ+0.1) (min)

Conductivity: G=± (1% × G+0.01) mS

Dianna: δ=± (1% × δ+0.01) mS

Load: S=± (1% × S+0.1) VA

Resistance: R=± (1% × R+0.1) Ω

Reactance: X=± (1% × X+0.1) Ω

3. Charging power supply: AC 176V~264V, frequency 45-55Hz

4. Measurement range and resolution of the instrument

Minimum resolution for testing project scope

Difference value (%) 0.001~10.000 0.001

Angle difference (ˊ) 0.01~± 600.00 0.01

Error value (%) 0.001~10.000 0.001

Revision (%) 0.001~10.000 0.001

5. Basic error

Difference<0.02%

Angle difference<± 1 point

Conductivity: ± (1% conductivity reading+1% electronegativity reading+1 digit) mS

Dianna: ± (1% Dianna reading+1% conductivity reading+1 digit) mS

6. Insulation: The insulation resistance between the voltage and current input terminals and the casing is ≥ 100M Ω

The working power input terminal is subjected to a power frequency of 2KV (effective value) between the casing for 1 minute during the experiment

7. Battery working time: After being fully charged, the working time is greater than 6 hours

8. Volume:

Host: 40cm × 36cm × 14cm

Extension: 32cm × 28cm × 14cm

9. Weight:

Host: 5kg

Extension: 3Kg