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Three-phase transformers from 4 kVA bis 35 kVA
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Three-phase transformers with cooling channels
Polyphase power dry transformers
Multiphase isolation transformers
Datasheet as PDF
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Field of application
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Isolation transformer conform to IEC/EN61558-2-4 for general purpose, e.g. as safe isolation for devices according the requirements of VDE0700/EN60335, or as net distribution transformer for
TN-net systems. Suitable for potential free nets, test systems and as power-ratio transformer.
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Description
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Three-phase transforemr, built as an isolation transformer conform to EN61558-2-4. Basically this type size can be built in any vector group. If there is no vector group given, we use Dyn5 as default (star point can have full load from the outside conductor).
Please consider the difference between outside conductor voltage and phase voltage to star point at the different vector groups.
For a safe and easy transport, the transformers have crane hooks at the upper side.
The used block terminals are shock proof conform to VBG4. A vacuum varnishing makes a low
hum-noise possible.
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Table
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Type
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Type size
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Sec.-
power
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Efficiency
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Dimensions in mm
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Mounting holes
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Copper-
weight
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Total
weight
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b
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l
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l1
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h
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h1
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f1
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f2
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f3
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TEO
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250/250/52 LK
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4
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96%
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305
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115
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124
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260
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320
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94
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224
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10
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14
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32
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TEO
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250/250/65 LK
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4,5
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97%
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305
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127
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137
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260
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320
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107
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224
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10
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14
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34
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TEO
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280/280/58 LK
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5
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97%
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342
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130
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140
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288
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350
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110
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248
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10
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14
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36
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TEO
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300/300/63 LK
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6,3
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97%
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370
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142
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155
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306
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380
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125
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264
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10
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16
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45
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TEO
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300/300/78 LK
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8
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97%
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370
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157
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170
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306
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380
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140
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264
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10
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17
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52
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TEO
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350/350/73 LK
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10
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98%
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430
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160
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175
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362
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440
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143
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316
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12
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17
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62
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TEO
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350/350/88 LK
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12,5
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98%
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430
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175
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190
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362
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440
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158
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316
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12
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19
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76
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TEO
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350/350/103 LK
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16
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98%
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430
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190
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205
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362
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440
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173
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316
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12
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22
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92
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TEO
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350/350/133 LK
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20
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98%
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430
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220
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235
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362
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440
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203
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316
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12
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24
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108
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TEO
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400/400/83 LK
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25
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98%
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490
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180
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195
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415
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490
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157
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356
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15
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43
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114
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TEO
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400/400/110 LK
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30
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98%
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490
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220
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222
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415
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490
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184
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356
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15
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47
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137
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TEO
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400/400/140 LK
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35
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98%
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490
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250
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252
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415
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490
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214
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356
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15
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50
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165
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Technical changes and optimization reserved
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01/2010
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