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STI - Single-phase control, isolating and safety transformers

Single-phase-control transformer: STN / STZ / STI / ET, ETF / ETSP, ETFSP

Contact
Tel.: +43 / 2689 / 2744 – 0
E-mail: info@trafomodern.com

Designed and tested according

  • IEC/EN 61558-2-2 / 2-4 / 2-6
  • VDE 0570-2-2 / 2-4 / 2-6
  • UL 5085-2
  • CSA 22.2 No. 66

For use according to

  • IEC/EN 60204-1
  • VDE 0113 / VDE 0100 part 410

Typical applications

  • Control voltage circuits
  • Functional low voltage
  • Safety low voltage
  • Protective separation

Basic equipment

  • Seperate windings
  • Insulation class B
  • Ambient temperature –25 to 40 °C
  • Connection terminal (<63 A)
  • Frequency 50/60 Hz
  • ±5 % tapping on the primary side

CAD-Data

  • According to IEC/EN 61 558 transformers with rated output voltages ranging from 12 V to 42 V can be used as safety transformers.
  • UL/CSA only up to 600 V (incl. tapping)
  • CUR according to UL-File XPTQ2. or XPTQ8.E168819 (General Purpose-Component)
  • From STI0,315 (*/12) ---> STZ

When ordering, the following information must be added to the type designation: 

STI0,06(*/*)
1st place holder≙ rated input voltage
2nd place holder≙ rated output voltage

Sample order

  • requested type STI0,06
  • requested rated input voltage 230 V
  • requested rated output voltage 12 V
The correct type designation reads STI0,06(230/12)

The umambiguous article number of your configuration will be defined by trafomodern during the offer- and order process. 

  Here is a hidden table in the mobile version. Click here to display it.
Rated output Short time rating Rated input voltage Rated output voltage Type Price per unit Cu-no. 1) Copper surcharge
kVA kVA V(selectable) V(selectable)   Euro   Euro
0,06 0,13 230 ± 5 %
400 ± 5 %
12
24
STI0,06(*/*) 62,80 0,20 1,00
0,1 0,24 415 ± 5 %
440 ± 5 %
42
110
STI0,1(*/*) 71,10 0,25 1,25
0,16 0,36 500 ± 5 %
690 ± 5 %
230 STI0,16(*/*) 87,30 0,40 2,01
0,2 0,44     STI0,2(*/*) 97,60 0,65 3,26
0,25 0,6     STI0,25(*/*) 106,10 0,80 4,01
0,315 0,75     STI0,315(*/* ) 115,20 1,10 5,52
0,4 1     STI0,4(*/*) 119,80 1,15 5,77
0,5 1,6     STI0,5(*/*) 135,80 1,40 7,02
0,63 1,7     STI0,63(*/*) 165,00 1,90 9,53
0,8 2     STI0,8(*/*) 184,60 2,10 10,53
1 2,8     STI1,0(*/*) 202,90 2,20 11,03
1,3 3,7     STI1,3(*/*) 256,70 3,20 16,04
1,6 5,5     STI1,6(*/*) 347,20 3,40 17,05
2 7     STI2,0(*/*) 404,60 4,00 20,06
2,5 9     STI2,5(*/*) 446,10 5,50 27,58
3 11,5     STI3,0(*/*) 641,70 9,50 47,63
4 15     STI4,0(*/*) 799,30 10,40 52,14

1) The calculation method of the material price surcharge will be explained in Section 2.1 in the general conditions of busines.


STI graphic 2 - Single-phase control, isolating and safety transformer

  Here is a hidden table in the mobile version. Click here to display it.
Type Total
weight
No-load losses Short-circuit losses Short-circuit voltage Efficiency factor a b c b c b c b c b c e f ø g b1 c1
  kg W W %     12 V 24 V 42 V 110 V 230 V          
STI0,06 1,5 6 5 7,8 0,85 85 75 91 75 91 75 91 75 91 75 91 64 47 4,8 x 8 60 76
STI0,1 2 7 8 6,9 0,87 85 89 91 89 91 89 91 89 91 89 91 64 61 4,8 x 8 74 76
STI0,16 2,3 9 12 6,6 0,88 85 97 91 97 91 97 91 97 91 97 91 64 70 4,8 x 8 83 76
STI0,2 3 11 17 6,6 0,88 106 83 112 83 112 83 112 83 112 83 112 80 61 5,8 x 12 80 97
STI0,25 3,8 13 14 5,1 0,9 106 111 124 91 112 91 112 91 112 91 112 80 70 5,8 x 12 89 97
STI0,315 4,3 10 18 5,5 0,92 121 - - 88 119 88 119 88 119 88 119 90 68 5,8 x 12 86 106
STI0,4 5,2 17 18 4,4 0,92 121 - - 100 119 100 119 100 119 100 119 90 80 5,8 x 12 98 106
STI0,5 6,8 15 24 3,9 0,93 121 - - 140 131 120 119 120 119 120 119 90 100 5,8 x 12 118 106
STI0,63 7,7 15 27 4,1 0,94 151 - - 121 157 107 145 107 145 107 145 122 82 7 x 15 104 132
STI0,8 9,6 17 25 3,2 0,95 151 - - 138 157 124 145 124 145 124 145 122 99 7 x 15 121 132
STI1,0 13,4 27 29 2,9 0,95 151 - - 164 157 164 157 150 145 150 145 122 125 7 x 15 147 132
STI1,3 14,9 32 35 3 0,95 175 - - 148 169 148 169 138 157 138 157 135 110 7 x 15 135 152
STI1,6 17,4 21 37 2,4 0,96 195 - - 142 240 149 186 142 174 142 174 150 110 10 x 18 140 166
STI2,0 21,5 27 33 2 0,97 195 - - 154 240 161 186 154 174 154 174 150 122 10 x 18 152 166
STI2,5 21,5 39 43 2,4 0,97 195 - - 154 240 154 240 161 186 154 174 150 122 10 x 18 152 166

1) Values measured at room temperature            dimensions in mm


STI graphic 3 - Single-phase control, isolating and safety transformer

Here is a hidden table in the mobile version. Click here to display it.
Type Total weight No-load losses Short-circuit losses Short-circuit voltage Efficiency factor a b1 c1 e f ø g b c b c b c b c b c
  kg W W %               12 V 12 V 24 V 24 V 42 V 42 V 110 V 110 V 230 V 230 V
STI3,0 26 30 55 2,1 0,97 230 - - 210 250 230 255 185 275 170 255 190 200 11 - -
STI4,0 35 38 88 2,2 0,97 230 - - 235 250 255 255 210 275 200 255 190 200 11 - -

1) Values measured at room temperature            dimensions in mm
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