Three-Phase Transformer High Power Test Systems

Phenix Technologies offers a complete line of Transformer Test Systems for testing distribution to small power transformers, three phase or single phase. Consisting of a variable power supply, step-up transformer, and high accuracy metering package controlled by an industrial microprocessor, the TTS series is a ready-to-test solution for a wide range of transformer testing applications.

PHENIX Transformer Test Systems are designed to perform tests in accordance with IEC 60076 and ANSI / IEEE C57.12, standards, latest edition. These tests include:

• Excitation Current Measurement
• Excitation Loss (No-Load or Core Loss)
• Impedance Voltage Measurement
• Full Load Current
• Copper Loss (Load Loss)
• Temperature Measurement (Heat Run)

Additional testing capability with optional system components include:

• Applied Potential Test
• Induced Potential Test
• Winding Resistance Measurement
• Turns Ratio and Phase Displacement
• Insulation Resistance

• Main and control power circuit breakers
• Zero Start interlock
• Emergency off mushroom switch
• Slow-and fast-acting protective devices on power transformer, regulator, measurement system, and other critical components
• Raise and Lower pushbuttons with Off Zero indicator
• Motorized control of output voltage with adjustable rate of rise
• Motorized tap selector with indicators
• Auto-ranging wattmeter and voltmeter with direct readout
• Four-wire measurement system for accurate readings
• Test mode selector with indicator • RMS and AVERAGE responding voltmeters, displayed simultaneously
• Provision for external security circuit with indicator
• System calibration traceable to NIST (National Institute of Standards and Technology, USA)
• Foot switch
• Flashing red warning light
• Recessed jacks for output leads
• Fork truck and overhead lifting provisions
• Two copies of operation/maintenance manual

Precision Power Regulation

The power regulating system of a PHENIX TTS varies between three different options. The system may be equipped with one of two types of variable transformers determined by the power rating of the test system; a lower power system utilizes a toroidal type regulator and a larger system utilizes a column type regulator. For additional detailed information on Voltage Regulators refer to PHENIX brochure #70106. The third option is a variable frequency power supply that can generate frequencies of 50/60 Hz as well as higher frequencies needed for induced testing.

Environmental Conditions

• 10-40°C, indoor/outdoor in fair weather
• Humidity <95% non-condensing
• Altitude <3300 ft (1000 meters)

Phenix Technologies uses the latest development in computer assisted controls. The Human Machine Interface (HMI) allows the programming of automation features of the test set. Easy step-by-step instructions guide the operator through each test procedure. Set-up maps for each test are provided to reduce costly connection mistakes. The system calculates corrected losses, efficiency, regulation, and percent impedance.

All output meters are displayed on the LCD screen. Data acquisition and report generation of the test results are performed via computer and WIN TTS testing software with all required interface cables included. The HMI eliminates a large number of relays and meter wiring which increases reliability. In addition to the test results database, the system is equipped with a recipe database that allows recall of a previously entered testing template reducing testing time and increasing efficiency.

Also included are calibration and service modes. All adjustments needed for yearly recalibration are simply made by adjusting a few numbers in the software. The service mode assists and simplifies maintenance, and helps in the diagnosis of failed components in the rare cases that may be necessary.

A high precision microprocessor-based measuring system is designed into the PHENIX Transformer Test System. This enables accurate measurement of output power, voltages, and currents. The metered information is displayed on the HMI. The values displayed on the HMI are performed as a function of the programmable logic controller (PLC). The following metering measurements are displayed:

Voltmeter
Six 5-digit displays showing True RMS and Average readings simultaneously Accuracy is ±0.5% of reading +LSD

Currentmeter
Three 5-digit displays showing True RMS reading
Ranges: 0-1.00/10.00/100.0/1000 A(1)
Accuracy: ±0.5% of reading +LSD (1) or alternatively, depending on system design
Three 5-digit displays showing True RMS reading
Ranges: 0-20.00/200.0/2000 A
Accuracy: ±0.5% of reading +LSD

Wattmeter
±0.5% of reading +LSD at 1.0 pF
±1.5% of reading +LSD at 0.3 pF
±3.0% of reading +LSD at 0.1 pF

Temperature
One 4 ½-digit display
Range: 10-120. 00°C
Accuracy: ±1°C
Phenix Technologies also offers test systems with high measuring accuracy required for transformers that operate at very low power factors. For these types of systems, please consult with your Phenix Technologies Sales Representative.

• Capacitive Compensation Bank
  To extend the testing range of the TTS, PHENIX can provide capacitive compensation banks. Usually connected between the transformer under test and the test system, PHENIX offers a variety of solutions with manual or automatic capacitor selection.
• Applied Potential Testing
  PHENIX offers a complete line of AC dielectric transformers with a variety of ratings available to meet any need. Applied potential testing is necessary to verify insulation integrity in reference to ground. PHENIX can also integrate an existing hipot with a transformer test system.
• Induced Potential Testing
  A motor generator or electronic power supply can be integrated with the test system to increase the output frequency to perform induced testing. Detection of turn-to-turn insulation integrity is verified. The induced system typically uses the main transformer at double the 50 or 60 Hz tap rating, thus reducing the need for an additional transformer when performing induced testing. Stand-alone induced test stations are optionally available.
• Turns-Ratio and Phase Displacement Metering
  The model PATTR-03D three-phase, automatic turns ratio and phase displacement meter has outstanding accuracy and is easily integrated with the testing software for complete remote control and data acquisition.
• Winding Resistance Measurement
  Quickly and accurately measure winding resistance. The unit has 10 A of charging current. For detailed specifications, refer to PHENIX brochure #20701. The software also supports many other models.
• Insulation Resistance Measurement
  PHENIX offers a complete line of manual or fully automated insulation resistance meters.
• Partial Discharge Measurements
  PHENIX test systems equipped with an oil insulated step-up transformer and optional high voltage filters are capable of being used as a source for sensitive partial discharge measurements. The typical PD specification is <50 pC at rated voltage but can be enhanced upon request. Additionally, PHENIX offers a complete line of single- or three-phase Partial Discharge Detectors, RIV Meters, and Coupling Capacitors
• Control Consoles
  PHENIX offers an optional remote console that contains all instrumentation and controls. This option will allow the controls to be placed in protected area or climate-controlled room.
• Automated Distribution Transformer Test Systems
  For the customer interested in increasing production while decreasing labor costs, Phenix Technologies can provide fully automated distribution transformer test systems designed for high volume testing. The automated test systems are custom designed and built for the individual needs of the customer. Multiple test stations with single connection hook-ups can be configured to simultaneously perform the customer’s desired testing protocol on each transformer. The industrial microprocessor based test system with HMI has proven to be highly reliable under stringent testing applications. Operator training time is minimal. Both manufacturers and repair facilities benefit greatly from the efficiency of automated test systems. Total test time can be reduced to as low as 90 seconds or less per transformer depending on the tests being performed and the testing sequence.
• Large Power Transformer Testing Solutions
  Manufacturers and repair facilities that work with very large power transformers face unique challenges when testing is required. Phenix Technologies offers a variety of options such as power supplies, switches, and high accuracy components that can be integrated into a complete test system to meet the customer’s needs.
• On-Site Services and Calibration
  Long-term customer support is provided from our fully experienced and knowledgeable staff. Phenix Technologies’ service department offers on-site installation and operator training. We support our customers worldwide with a full-line of additional services such as on-site calibration, maintenance, upgrades and repair.

Phenix Technologies Three-Phase Transformer Test Systems Brochure

Phenix Technologies Transformer Test Instruments Brochure