three-phase transformers TTI insulation

three-phase transformers TTI insulation2018-10-03T13:14:49+00:00

TTI series is made of transformers whose primary and secondary coils are electrically separated through ane lectrostatic screen in order to reduce any danger due to a simultaneous accidental contact between earth and metallic parts that could go under tension in case of a breakdown of the insulation.
The connection of phases is usually possible as star. In request the dimensions can be changed in order to fulfil any volume requirement.

Technical specifications:
– insulation class E
– frequency 50/60 Hz.
– open execution, protection level IP00
– ambient temperature 40°C
– either vertical or horizontal execution
– resin impregnated and tropicalised
– vectorial group Yy0
– other vectorial groups on request
– electric class of protection l
– screen between primary and secondary

Essential information for order and offers inquiries:
– power in VA or in KVA
– network tension and frequency
– output tension
– connection type
– ambient temperature
– working ambient conditions
– quantity of screens to be fitted
Primary Tension: 230-400Vac
Secondary Tension: 230Vac+N (accessibile) oppure 400Vac+N (accessibile)
Final code: 230+N=Cod.2 / 400+N=Cod.4
Code Power
Va
Watt loss
Watt
Dv
%
Vcc
%
Dim.
A
Dim.
B
Dim.
C
Dim.
D
Dim.
E
Weight
Kg
TTI030- 300 30 3,5 3,7 170 180 120 150 70 8,5
TTI050- 500 45 3,4 3.6 170 180 140 150 90 12,5
TTI10- 1000 98 4,9 7,1 230 240 150 200 80 17
TTI100- 10000 540 3,8 5 420 420 240 375 140 92
TTI15- 1500 120 4,4 5,9 250 240 170 200 100 20,5
TTI150- 15000 780 3,8 5,1 420 420 260 375 160 113
TTI20- 2000 150 4,2 5,5 300 300 180 250 110 28,5
TTI200- 20000 920 3,6 74,8 490 480 270 455 140 135
TTI25- 2500 160 4 5 300 300 190 250 110 35
TTI250- 25000 995 3,6 4,8 490 480 290 455 160 162
TTI300- 30000 1200 3,5 4,5 490 480 310 455 180 190
TTI40- 4000 190 4 5 300 300 210 250 1230 46
TTI400- 40000 1400 3,5 4,5 620 620 330 455 160 238
TTI50- 5000 330 4 5,2 360 360 220 325 150 73
TTI75- 7500 400 4 5 360 360 230 325 150 83
Dv: tension drop from vacuum to full load – Vcc: short-circuit tension.
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