New Transformer Turns Ratio

Product Overview

The instrument is used to check the correctnessof the transformer turns ratio,the condition of the tap changer,whether the transformer is short-circuited between turns,and whether the transiomer can be operated in parallel.
The three-phase output voltage is adopted to improve the test speed,The angle between phases can be measured,and the wiring group 0-11 can be automatically identified.For low-voltage rectifier transformers with multiple winding,the low-voltage side does not need lobe disconnected to measure the transformation ratio and 7.5°Angle deviation.Adopts 7-inch high-definition color touch screen LCD,modular display,clear display even under strong light.The instrument not only has print output,U disk interface,but also RS232 interface,which is convenient for paperless office.

1.The coaxial precision inverter power supply is usedinside the instrument,which eliminates the influenceof harmonics ofthe mains voltage during themeasurement,and the measurement is moreaccurate.When the working power source is agenerator,there is no influence.
2.The three-phase output voltage is adopted to improve the test speed.The angle between phases can be measured,and the wiring group 0-ll can be automatically identified. For low-voltage rectifier transformers with multiple windings,the low-voltage side does not need to be disconnected to measure the transformation ratio and 7.5°Angle deviation.
3.lt is suitable for a wide variety of transformers,especially suitable for the measurement of Z-type transformers,rectifier transformers,grounding transformers,electric furnace transformers,phase-shifting transformers,balance transformers,etc,
4.With high and low voltage reverse connection protection,transformer turn-to-turn short-circuit protection,tap switch failure protection,output full short-circuit protection,and increase the stability other instrument.
5.After inputting the rated parameters,it can automatically measure the transformer ratio,error value and tap position of the tap changer.Especially for tap changers with asymmetric tapping,the accurate position of the tap changer of the transformer can also be accurately measured.A tap switches capable of measuring 99 tap positions.
6.Adopts 7-inch high-definition color touch screen LCD,modular display,clear display even under strong light.
7.The instrument not only has print output,U disk interface,but also RS232 interface,which is convenient for paperless office.
8.High quality multifunctional engineering plasticbox is cold-resistance,high temperature resistance,water proof,shake proof,which is suitable for field test.
9.By downloading APP(Android),users can control instruments,store and upload test data for easy reference.

Environmental Conditions

Temperature:0°C to 50°C (operating range)

Humidity:<85% RH (non-condensing)

Altitude:<2000 meters above sea level

Safety Precautions

Transformer Condition:

Must be fully de-energized, isolated, and grounded

Discharge windings and bushings before testing

Personal Protective Equipment (PPE):

Insulated gloves and safety goggles

Flame-resistant clothing in high-risk environments

Work Area Safety:

Clearly mark testing zones with warning signs

Restrict access to unauthorized personnel

Power and Equipment Setup

Tester Power Supply:

AC 100–240V ±10%, 50/60 Hz, or DC power (if battery-operated)

Stable voltage without fluctuations or surges

Grounding:

Reliable earth ground connection mandatory for safety and accuracy

Test Leads and Connections:

Use manufacturer-approved leads and connectors

Ensure clean, secure connections to transformer terminals

Follow color-coding (HV: red, LV: black, ground: green)

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1.Test Range:0.9~10000angle:0-360

2.Accuracy:±0.1%+2wrods (0.9~500)

+0.2%+2words(501-2000)

士0.5%+2words(2001-10000)

3.Angle Accuracy: ±0.2°

4.Best Resolution: ratio--0.0001angle--0.01°

5.Output voltage: Automatically adjust according toload

6.Input Power:AC220V士10% 50±1HZ

7.Temperature Range:-10'C~40'C

8.Relative Humidity: <85%, no dew.

9.Size: Instrument Caser: 360*290*170(mm),Accessories Case: 360*290*170(mm)

10.Weight:Instrument5 KGS, Accessories case 5.5KGS