STI – Single-phase control, isolating and safety transformers

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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

Typical applications

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

For use according to

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

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

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. 

Technical notes

Important Note:

  • 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

CAD-data

show

Rated output kVA Short time rating kVA Rated input voltage V(selectable) Rated output voltage V(selectable) Type Price per unit EuroCu-no. 1)
0,06 0,13 230 ± 5 % 400 ± 5 % 12/ 24STI0,06(*/*) Price on request0,20
0,1 0,24 415 ± 5 % 440 ± 5 % 42 / 110STI0,1(*/*) 0,25
0,16 0,36 500 ± 5 % 690 ± 5 % 230 STI0,16(*/*) 0,40
0,2 0,44 STI0,2(*/*) 0,65
0,25 0,6 STI0,25(*/*) 0,80
0,315 0,75 STI0,315(*/* ) 1,10
0,4 1 STI0,4(*/*) 1,15
0,5 1,6 STI0,5(*/*) 1,40
0,63 1,7 STI0,63(*/*) 1,90
0,8 2 STI0,8(*/*) 2,10
1 2,8 STI1,0(*/*) 2,20
1,3 3,7 STI1,3(*/*) 3,20
1,6 5,5 STI1,6(*/*) 3,40
2 7 STI2,0(*/*) 4,00
2,5 9 STI2,5(*/*) 5,50
3 11,5 STI3,0(*/*) 9,50
4 15 STI4,0(*/*) 10,40

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

type total
weight		 no-load
losses		 short-circuit
losses		 short-circuit
voltage		 efficiency 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

 

type total
weight		 no-load
losses		 short-circuit
losses		 short-circuit
voltage		 efficiency a b c b c b c b c b c e f ø g b1 c1
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