The TRAN-203 series of instruments are designed to measure the turns ratio and winding resistance of three-phase and single-phase transformers. Via its user-friendly interface, the TRAN instrument/s provide a fast and accurate assessment of key transformer parameters.

TURNS RATIO MEASUREMENT

The TRAN-203 employs elements of performance tests specified in the ANSI/IEEE C57.12.90 standard. With market leading accuracy the TRAN-203 has a very wide ratio measurement capability with a precision of 0.08 %. Other features include the measurement of core excitation current, phase angle, polarity, ratio error and magnetic balance. Even though TRAN-203 has a three-phase cable configuration, users can also perform single-phase transformer tests.

TRAN-203 can detect vector groups automatically. The instrument has a wide operating range for use on equipment such as high excitation current transformers and high-power potential transformers in substations. The instrument can generate 1V, 4V, 10V, 40V, 100V, 250V AC test voltages.

WINDING RESISTANCE MEASUREMENT

Applying up to 20 Amps of direct current allows the TRAN -203 series to measure the resistance of three phase transformers primary and secondary windings automatically. TRAN-203 instrument/s are designed to measure the resistance of the primary and secondary transformer windings without the need to disconnect and reconnect the test cables.

Starting at 0.1 uOhm, the TRAN-203 series can measure up to 100,000 Ohm of resistance. The instrument can control OLTC. The TRAN-203 series can demagnetise the transformer to mitigate the build-up of remanence or residual magnetism due to the testing. Device discharges through its voltage channels in case High Voltage is present in the transformer under test.

The instrument also has a temperature measurement input which when connected to an optional temp sensor allows the TRAN-203 series to perform temperature correction or adjustments to its measurements. In the case of a failure in the current circuit the TRAN instrument/s intelligent software controls the flow of current to mitigate damage and provide added safety for users.

Heat run test/Temperature Rise Test

Heat run test or temperature rise test reproduces conditions of continuous rated load and the temperature rise occurring during the load. TRAN-203 is capable of measuring the winding resistance of transformers and the full load resistance Ro during heat run test by applying up to 20A DC.

An internal battery option is also offered for operators who feel that they may be in situations where a mains supply source isnâ��t always available. Multi-language capability and a user-friendly operating menu make it easy to control.

DEVICE HIGHLIGHTS

Turns Ratio & Winding Resistance Tests: TRAN has a 3-phase cable configuration cable of testing turns ratio and winding resistance of both three-phase and single-phase transformers.

Heat run test/ Temperature Rise Test: TRAN-203 is capable of measuring the full load resistance Ro during heat run test by applying up to 20A DC.

Optional Rechargeable Li-Ion Smart Battery: TRAN comes with a 14.4V Li-Ion smart battery option which enables you to make tests while on field. TRAN works on both main power and consuming battery power.

2.28-inch Built-in Thermal printer: TRANs built-in thermal printer let you print the results immediately during field test.

FEATURES

Turns ratio measurement (Single-phase & Three-phase)
Winding resistance measurement (Single-phase & Three-phase)
Heat run test/Temperature rise test
Magnetic Balance Test
7-inch TFT Colour touch display
Built in 2.28-inch Printer
Battery & Bluetooth options
PC Software

TECHNICAL SPECIFICATIONS

Measurement Parameters3-Phase Turns Ratio Measurement, Excitation Current, Phase Angle, Polarity, Ratio Error (%), Vector group detection, Magnetic Balance; 3-Phase Winding Resistance Measurement

TURNS RATIO MEASUREMENT FEATURES

Ratio Measurement ModesCT Mode, PT Mode (Single-Phase and Three-Phase)

Measurement MethodANSI/IEEE C57.12

Test VoltagesCT Mode: 1 V and 4 V ; PT Mode: 1, 4, 10, 40, 100 & 250 V

Ratio Range0.8 - 50,000

Phase Angle Measurement0-360 Degree, ±0.2 degree

Excitation CurrentUp to 2 A

Excitation Current Accuracy ±0.1 mA

WINDING RESISTANCE MEASUREMENT FEATURES

Test Voltage50 V

Current outputFrom 0.001 A to 20 A DC (User-selectable)

Resolution5 digits

DemagnetisationYes

GENERAL FEATURES

Power Supply100-240 V, 47/63 Hz,

Battery14.4 V 6.9 Ah battery (Models: TRAN-203B, TRAN-203B BLUE)

Internal MemoryYes

Printer2.28-inch Built-in Printer

CommunicationUSB 2.0/1.1 Standard-A, USB 2.0/1.1 Standard-B, Bluetooth(Models: TRAN- 203BLUE & TRAN- 203B BLUE)

PC SoftwareData Management

Platform Software

Display7-inch colour touch display

Dimensions (429 x 328 x 236) mm

Weight9.5 kg

TemperatureWorking: -10 °C to +60 °C; Storage: -30 °C to +70 °C

Humidity95% RH Non-condensing

Protection ClassIP67 (case lid closed)

Standard accessories

Included in the packagePower Cable, Ground Cable, 2x 5m H&X Measurement Cable Set, 2x 10m H&X Extension Cable Set, 5m Tap Changer Cable Set, Jumper Cable, USB Cable, Printer Paper (x2), USB flash drive, Instruction Manual (Soft Copy), DMP Software, Cable Bag

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