Three-phase transformer

3EI core, pursuant to STN EN 61558-1
  STN EN 61558-2-4
  STN EN 61558-2-6
Standard type      3x400//3x230V
  3x400//3x400V
Vector group YNyn0, Dd0, Dyn1, Yyn0

Three-phase transformers are passive devices that transfer electrical energy between circuits. In the secondary circuit, the magnetic flux induces an electromagnetic force, increasing or decreasing the voltage without changing the frequency.

The three-phase transformer has a triple iron core on which the coils of the primary and secondary sides are placed in triple. The coils of the individual phases of the primary and secondary windings can be connected in different ways, allowing a large number of phase combinations, e.g.: YNyn0, Dd0, Dyn1, Yyn0, Yz0, Yy, Dy.

Type range Type Power [VA] Dimensions [mm] Weight [kg] No-load losses [W] Total losses [W] Efficiency η [%]
A B C IP00 IP23 ∆P Cu ∆P Fe
Three-phase transformer T3N-3 1,000 230 107 270 12 16 41 11 52 95
Three-phase transformer T3N-3 1,500 230 117 270 18 22 65 18 83 96
Three-phase transformer T3N-3 2,000 300 122 310 22 27 82 25 107 96
Three-phase transformer T3N-3 3,150 300 135 310 33 38 108 26 134 96
Three-phase transformer T3N-3 4,000 300 147 320 43 52 104 38 142 97
Three-phase transformer T3N-3 5,000 360 220 380 49 57 118 46 164 97
Three-phase transformer T3N-8 6,300 360 220 380 66 73 160 47 207 97
Three-phase transformer T3N-8 8,000 425 205 410 71 80 172 59 231 97
Three-phase transformer T3N-8 10,000 425 235 410 89 100 195 67 262 98
Three-phase transformer T3N-12,5 15,000 425 246 410 104 120 248 88 336 98
Three-phase transformer T3N-12,5 17,000 475 225 450 112 125 265 92 357 98
Three-phase transformer T3N-12,5 20,000 475 255 450 125 140 304 105 409 98
Three-phase transformer T3N-12,5 25,000 480 210 450 145 160 282 148 430 98
Three-phase transformer T3N-12,5 30,000 480 220 450 170 193 335 180 515 98
Three-phase transformer T3N-12,5 40,000 600 390 600 240 265 446 188 634 98
Three-phase transformer T3N-12,5 50,000 600 420 600 290 315 558 238 796 98
Three-phase transformer T3N-12,5 63,000 600 420 600 365 390 595 325 920 98

Fuse three-phase transformers
 3x400//3x400V
3 phase circuit breaker with input "D" output "C" characteristic
or fuse "gLgG"
VA input charakt. "D" output charakt. "C"
1000 2 2
2000 4 3
3000 10 6
4000 10 6
5000 13 10
6300 16 10
8000 20 13
10000 25 16
12500 32 20
15000 40 25
20000 50 32
25000 63 40
30000 63 50
40000 80 63
50000 125 80
63000 160 100
THERMAL CLASS F /155°C/
VOLTAGE WITHSTAND PRI / SEC  4,75kV 50Hz
SHORT-CIRCUIT RESISTANCE NOT SHORT-CIRCUIT RESISTANT
PROTECTION Circuit breaker according to the label with characteristic "D"
PROTECTION IP00 - IP23
AMBIENT TEMPERATURE T40
Datasheet download
TO ORDER