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ISO 9001 Certified


Vanguard Instruments Company, Inc., Electronic Testing Equipment, Ontario, CA
       

TRF-100

Automatic, 3-Phase Transformer Ratio Finder

 
       
9117-UC [TRF-100 Unit and Cables]
9117-PR [TRF-100 built-in thermal printer option]
9124-UC [Load Tap Changer Remote Control Box]

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.
The TRF-100 determines the transformer turns-ratio using the IEEE C57.12.90 measurement method. The transformer turns-ratio (ranging from 0.8 to 50,000) is determined by precisely measuring the voltages across the unloaded transformer windings. To ensure accuracy, the TRF-100’s measuring circuitry self-calibrates before each measurement. It requires neither adjustment nor temperature compensation. The TRF-100’s turns-ratio measurement accuracy is 0.1% or better.

  • 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-100

Cables

 
       
       

TRF-100

Technical Specifications

 
       
TYPE Portable, lightweight, automatic 3-phase transformer turns-ratio meter
PHYSICAL SPECIFICATIONS Dimensions: 17”W x 7”H x 13”D (43.2 cm x 17.8 cm x 33.0 cm)
Weight: 14 lbs (6.4 kg)
INPUT POWER 100 – 120 Vac or 200 – 240 Vac (selectable), 50/60 Hz, 3 Amps
MEASUREMENT METHOD ANSI/IEEE C57.12.90
TURNS-RATIO MEASURING RANGE 0.8 – 50,000 to 1
 TYPICAL TURNS-RATIO ACCURACY 4 Vac: 0.8 – 1,000 (±0.08%), 1,001 – 4,000 (±0.1%), 4,001 – 15,000 (±0.25%)
40 Vac: 0.8 – 1,000 (±0.05%), 1,001 – 4,000 (±0.1%), 4,001 – 15,000 (±0.25%), 15,001 – 20,000 (±0.4%), 20,001 – 50,000 (±0.5%)
100 Vac: 0.8 – 1,000 (±0.05%), 1,001 – 4,000 (±0.1%), 4,001 – 15,000 (±0.25%), 15,001 – 20,000 (±0.4%), 20,001 – 50,000 (±0.5%)
TEST VOLTAGES 4 Vac @ 1.0A, 40 Vac @ 0.6A, 100 Vac @ 0.1A
CURRENT READING RANGE 0 – 2 Amperes; accuracy: ±1mA, ±2% of reading (±1 digit)
PHASE-ANGLE MEASUREMENT 0 – 360 degrees; Accuracy: ±0.2 degree ( ±1 digit)
DISPLAY back-lit LCD screen (20 characters by 4 lines)
viewable in bright sunlight and low-light levels
PRINTER Optional built-in 4.5-inch wide thermal printer
COMPUTER INTERFACE USB PC interface
INTERNAL TEST RECORD STORAGE stores 1,000 complete transformer test records, each including nameplate voltage, turns-ratios, excitation current, and winding phase angle
INTERNAL TEST PLAN STORAGE stores up to 128 transformer test plans
PC SOFTWARE Windows®-based transformer turns-ratio analysis software is included with purchase
SAFETY designed to meet IEC 61010 (1995), UL 61010A-1, and CSA-C22.2 standards
TEMPERATURE Operating: -10˚ to 50˚ C (15˚ to +122˚ F)
Storage: -30˚ C to 70˚ C (-22˚ to +158˚ F)
HUMIDITY 90% RH @ 40°C (104°F) non-condensing
ALTITUDE 2,000 m (6,562 ft) to full safety specifications
CABLES 15 ft (4.6m) single phase cable set, 15 ft (4.6m) 3-phase cable set, 25 ft (7.6m) extension cable set, USB cable, power & ground cables, cable bag
OPTIONS shipping case, transformer load tap-changer remote control device, 30' (9.14 m) single and 3-phase H and X leads
WARRANTY One year on parts and labor
Specifications are valid at nominal voltage and ambient temperature of +25˚C (+77˚F).
Last updated on April 14, 2016