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Transformer Turns Ratio Meters

       

ATRT-01 S3

Transformer Turns Ratio Tester

  
       
Part Number(s)
9023-UC [ATRT-01 S3]
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The ATRT-01 S3 is Vanguard’s fourth generation, micro-processor based, single phase, automatic transformer turns-ratio tester. The ATRT-01 S3 uses the IEEE C57.12.90 measuring method to determine the transformer turns-ratio. The transformer turns-ratio is determined by precisely measuring the voltages across the unloaded transformer windings. The ATRT-01 S3’s measuring circuitry self adjusts before each measurement to ensure turns-ratio accuracy. Two selectable test voltages, 4Vac and 40Vac, offer flexibility in testing different types of transformers.
  • Standalone or computer-controlled
  • Inexpensive
  • Displays turns-ratio from 0.8-15,000
  • Calculates turns-ratio percentage error
  • Displays winding polarity and phase angle
  • Displays excitation current
       

ATRT-01B S3

Transformer Turns Ratio Tester

  
       
Part Number(s)
9036-UC [ATRT-01B S3]
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The ATRT-01B S3 is Vanguard’s fourth generation, micro-processor based, single phase, automatic transformer turns-ratio tester. The ATRT-01B S3 uses the IEEE C57.12.90 measuring method to determine the transformer turns-ratio. The transformer turns-ratio is determined by precisely measuring the voltages across the unloaded transformer windings. The ATRT-01B S3’s measuring circuitry self adjusts before each measurement to ensure turns-ratio accuracy. Two selectable test voltages, 4Vac and 40Vac, offer flexibility in testing different types of transformers.
  • Standalone or computer-controlled
  • Inexpensive
  • Displays turns-ratio from 0.8-15,000
  • Calculates turns-ratio percentage error
  • Displays winding polarity and phase angle
  • Displays excitation current
  • Battery or AC-Powered
       

ATRT-03 S2

3-Phase Transformer Turns Ratio Tester

  
       
Part Number(s)
9003-UC [ATRT-03 S2]
9003-PR [Printer Option]
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The Vanguard Instruments ATRT-03 S2 is the third generation, microprocessor-based, automatic, three phase, transformer turns-ratio tester. This light weight, rugged, portable unit is designed for transformer testing at utility power substations.
  • Highest ratio: 0.8 - 15,000
  • Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards
  • 3 Test voltages available: 8Vac, 40Vac, 100Vac
  • Phase angle and excitation current measuring
  • Computer Interface (RS-232C and USB Port)
  • USB flash drive interface
  • Name-plate turns ratio calculation
  • Computed % error based on measured and calculated ratio
  • Optional 4.5" thermal printer
  • Powered from a single phase 100-264 Vac 50/60 Hz
       

TRF-100

Automatic, 3-Phase Transformer Ratio Finder

  
       
Part Number(s)
9117-UC [TRF-100 Unit and Cables]
9117-PR [TRF-100 built-in thermal printer option]
9124-UC [Load Tap Changer Remote Control Box]
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The TRF-100 is Vanguard’s third generation, microprocessor-based, automatic, three phase, transformer turns-ratio tester. This lightweight, portable unit is designed for testing transformers at utility power substations.
  • Ratio Range: 0.8 - 50,000 to 1
  • Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards
  • 3 test voltages: 4Vac, 40Vac, and 100Vac
  • Phase angle and excitation current measurement
  • USB PC interfaces
  • 4.5-inch wide thermal printer (optional)
       

TRF-250

Automatic, 3-Phase Transformer Ratio Finder

  
       
Part Number(s)
9105-UC [TRF-250]
9105-PR [TRF-250 built-in thermal printer option]
9105-SC [TRF-250 shipping case]
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The TRF-250 is Vanguard's fourth generation transformer turns ratio tester. This latest design provides a higher turns-ratio test voltage of 250Vac, provides a wireless Bluetooth PC interface, and features a 44-key "QWERTY"-style membrane keyboard. All these features greatly improve the accuracy of the turns ratio readings, ease of operation, and reliability.
  • Ratio Range: 0.8 - 50,000 to 1
  • Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards
  • 4 test voltages: 4Vac, 40Vac, 100Vac, and 250Vac
  • Phase angle and excitation current measurement
  • Bluetooth and USB PC interfaces
  • 4.5-inch wide thermal printer (optional)
       

TRF-250A

Automatic, 3-Phase Transformer Ratio Finder

  
       
Part Number(s)
9106-UC [TRF-250A]
9106-SC [TRF-250A shipping case]
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The TRF-250A is the battery-powered version of the TRF-250. Its battery offers approximately 3 hours of continuous use. The TRF-250A features a built-in charger that allows the unit to be used while charging.
The TRF-250A provides a test voltage of 250Vac, a wireless Bluetooth PC interface, and features a 44-key “QWERTY”-style membrane keyboard.
  • Battery-powered
  • Ratio range: 0.8 – 50,000 : 1
  • Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards
  • 4 test voltages: 4Vac, 40Vac, and 100Vac, and 250 Vac
  • Phase angle and excitation current measurement
  • Bluetooth and USB PC interfaces
  • 4.5” wide thermal printer
       

Tri-Phase

True 3-Phase Transformer Turns Ratio Tester

  
       
Part Number(s)
9008-UC [Tri-Phase]
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Vanguard’s new TRI-PHASE is a true 3-phase transformer turns ratio tester designed to conform to the IEEE C57.12.90 measurement method. The TRI-PHASE outputs a 3-phase excitation test voltage to the three transformer primary windings. The induced 3-phase secondary voltages are sensed and the transformer turns ratio is calculated. The TRI-PHASE is capable of measuring turns ratios from 0.8 to 15,000. The 3-phase excitation current, phase angle readings along with the turns ratios are displayed on the built-in LCD.
  • Generates its own 3-phase transformer test voltage from single-phase AC or DC Power input
  • Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards plus phase shifting transformers
  • 64 x 128 graphic LCD screen
  • Store up to 128 transformer test-plans in Flash EEPROM
  • Store up to 112 test records in Flash EEPROM
  • Built-in USB Flash Drive Interface
  • Computer Interface (RS-232C and USB Port)
  • 4.5 Inch thermal printer
  • Built-in transformer load tap changer
  • Powered from a single phase 100-264 Vac 50/60 Hz
       

CVT-765

Capacitor Voltage Transformer Tester

  
       
Part Number(s)
9025-UC [CVT-765]
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The Vanguard CVT-765 is a microprocessor-based, single phase, automatic, transformer turns-ratio tester. This portable test unit is specifically designed to measure the turns-ratios of Capacitor Voltage Transformers (CVT’s).
The CVT-765 determines the transformer turns-ratio using the IEEE C57.12.90 measuring method. It uses a 7440 Vac excitation voltage source to accurately measure the turns-ratio of Capacitor Voltage Transformers with a rating of up to 765KV.
  • Standalone or computer-controlled
  • Can test CVT's rated up to 765 KV
  • Displays turns-ratios from 75-15,000
  • Calculates turns-ratio percentage error when nameplate voltages are provided
       

ATRT Check Box

Turns Ratio Tester Verification Device

  
       
Part Number(s)
9129-UC [ATRT Check Box]
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The Vanguard ATRT Check Box is designed to verify the field performance of all Electronic Transformer Turns Ratio Testers. It can also be used for trouble-shooting and servicing Electronic Turns Ratio Testers.
The ATRT Check Box uses a toroidal auto-transformer with different taps to give the precise turns-ratio.
  • Field performance verification of all electronic turns ratio testers
  • Up to 250 Vac excitation voltage
  • Up to 12,000:1 turns ratio