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
Cable Part Number [8000-0005] USB Cable [ 6' (1.83m) ] 8000-0005 [8000-0009] H Single Phase Cable [ 15' (4.57m) ] 8000-0009 [8000-0010] H Extension Cable [ 25' (7.62m) ] 8000-0010 [8000-0011] X Single Phase Cable [ 15' (4.57m) ] 8000-0011 [8000-0012] X Extension Cable [ 25' (7.62m) ] 8000-0012 [8000-0013] H 3-Phase Cable [ 15' (4.57m) ] 8000-0013 [8000-0014] X 3-Phase Cable [ 15' (4.57m) ] 8000-0014 [8000-0186] 3-Phase H Cable [ 30' (9.14m) ] 8000-0186 [8000-0187] 3-Phase X Cable [ 30' (9.14m) ] 8000-0187 [8000-0188] Single-Phase H Cable [ 30' (9.14m) ] 8000-0188 [8000-0189] Single-Phase X Cable [ 30' (9.14m) ] 8000-0189

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).