TTI-K – THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor

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Description

THREE PHASE K-FACTOR RATED ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factorK4 K13 K20 k-factor transformers

K-factor transformers are designed to manage the heating effect caused by harmonics and high neutral currents.

The K-factor index shows the ability of the transformer to withstand the harmonics operating within his thermal limits, through conductors of a proper size. The design of the K-factor transformers considers the “stray” losses caused by nonlinear loads and the DC component caused by triplen harmonics. The additional current which circulates in the delta winsing which may leads to a core saturation and voltage instability is taken into consideration and does not bring to a shorter life of the transformer

  • K-factor rating: K-4, K-13, K-20

  • Overload capacity 500% for 1/60″ – 200% for 30″

  • Dielectric strength 4,2kVac min.

  • Impedance voltage from 3% to 5%

  • Taps on primary ± 2×2.5% FCAN, ±2×2.5% FCBN

  • Input voltage range: ±6% on rated voltage

  • Max regulation at full load up to 3%

  • Audible noise < 60dB at 1mt.

  • Enclosure type: IP23, metal, epoxy painted RAL7032

  • Operating temperature: 0°C to 50°C

  • Operating humidity: up to 90% relative (non condensing)

  • Operating altitude: up to 1000mt above sea level
schema trasformatore isolamento sicurezza schermo
simbolo trasformatore isolamento
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 drawing of k-factor transformers

 

 K-4 RATED TRANSFORMERS
power part no dimensions mm. weight
KVA A B C kg.
15 TTI427-K4 550 365 520 120
30 TTI547-K4 710 440 770 150
45 TTI667-K4 775 570 825 170
75 TTI757-K4 775 570 825 250
100 TTI807-K4 775 570 825 350
150 TTI817-K4 1100 700 1000 420
200 TTI827-K4 1100 700 1000 600
300 TTI835-K4 1100 700 1000 690

 

 K-13 RATED TRANSFORMERS
power part no. dimensions mm. weight
KVA A B C kg.
15 TTI427-K13 710 440 770 140
30 TTI547-K13 710 440 770 180
45 TTI667-K13 775 570 825 270
75 TTI757-K13 775 570 825 360
100 TTI807-K13 1100 700 1000 440
150 TTI817-K13 1100 700 1000 600
200 TTI827-K13 1200 800 1400 680
300 TTI835-K13 1200 800 1400 1100

 

 K-20 RATED TRANSFORMERS
power part no. dimensions mm. weight
KVA A B C kg.
15 TTI427-K20 710 440 770 150
30 TTI547-K20 775 570 825 240
45 TTI667-K20 775 570 825 290
75 TTI757-K20 775 570 825 460
100 TTI807-K20 1100 700 1000 530
150 TTI817-K20 1200 800 1400 750
200 TTI827-K20 1200 800 1400 980
300 TTI835-K20 1200 800 1400 1250

 

Additional Information

potenza kVA

15, 30, 45, 75, 100, 150, 200, 300