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3. Electrical Connections - Installation Guidelines
3.7. DLT Three-Phase Isolating Transformers for
Mounting in Control Enclosures
A
C1
B1
G1
B
A
Hø
E
F
D
G
C
Hø
E
F
D
vertical design
for foot mounting
Type DLT.../S
Block diagram:
Example: rating plate
Type:
Bj.
DLT 2,5/S/380/415/440-220
1993
1U1, 1V1, 1W1
1U2, 1V2, 1W2
1U3, 1V3, 1W3
2U1, 2V1, 2W1
Prim.: 380-400/415/440 V
Sec.:
S
220-230V
2,5 kVA
horizontal design
for wall mounting
Type DLT.../L
Yyn0
T
40/B
f
440 V
415 V
380 V–400 V
220 V–230 V
50/60 Hz
1U1
1U2
1U3
1V1
1V2
1V3
1W1
1W2
1W3
2U1
a
2V1
2W1
2N1
1)
b
1) Maximum load: DC 24 V/1 A; AC 230 V/1 A
Dimensions and technical data for threephase isolating transformers with
Usec = 220-230 V; Upri = 380-400 V, 415 V, 440 V, 460 V, 500 V, f = 50/60 Hz
Dimensions in mm
Type designations
DLT
A
B
B1
C
C1
D
E
F
G
G1
0.5/ • /380/415/440–220
0.5/ • /380/460/500–220
1.0/ • /380/415/440–220
1.0/ • /380/460/500–220
1.5/ • /380/415/440–220
1.5/ • /380/460/500–220
2.0/ • /380/415/440–220
2.0/ • /380/460/500–220
2.5/ • /380/415/440–220
2.5/ • /380/460/500–220
4.0/ • /380/415/440–220
4.0/ • /380/460/500–220
5.0/ • /380/415/440–220
5.0/ • /380/460/500–220
7.5/ • /380/415/440–220
7.5/ • /380/460/500–220
10/ • /380/415/440–220
10/ • /380/460/500–220
15/ • /380–220
20/ • /380–220
25/ • /380–220
35/ • /380–220
50/ • /380–220
180
180
205
205
240
240
240
240
300
300
300
300
335
335
360
360
360
360
420
420
580
660
660
190
190
210
210
260
260
260
260
325
325
325
325
365
365
395
395
395
395
450
450
540
590
655
205
205
235
235
270
270
270
270
340
340
340
340
380
380
400
400
400
400
105
105
130
130
140
140
150
150
140
140
165
165
175
175
190
190
205
205
245
275
255
295
305
100
100
120
120
155
155
165
165
165
165
195
195
210
210
215
215
230
230
150
150
170
170
200
200
200
200
250
250
250
250
280
280
300
300
300
300
350
400
––
––
––
80
80
95
95
110
110
110
110
140
140
140
140
160
160
170
170
170
170
190
190
270
270
270
125
125
145
145
170
170
170
170
210
210
210
210
230
230
250
250
250
250
280
280
400
480
480
75
75
95
95
110
110
120
120
110
110
135
135
145
145
160
160
175
175
195
225
205
245
255
185
185
209
209
240
240
240
240
310
310
310
310
350
350
370
370
370
370
H
power
loss
in W
max. conn.
cross sections
in mm2
Wgt.
in kg
7
7
7
7
11
11
11
11
11
11
11
11
11
11
11
11
11
11
16
16
18
18
18
65
70
120
140
155
165
180
195
220
235
240
265
300
350
375
395
500
510
600
800
875
1000
1170
4
4
4
4
4
4
4
4
4
4
10
10
10
10
10
10
10
10
16
35
35
70
70
8.5
8.5
13
13
21
21
24.5
24.5
30.5
30.5
42
42
55
55
70
70
85
85
122
152
180
275
320
MBDLT
Fig. 3.6: DLT - threephase isolating transformers dimensional data
• DOK-DIAX02-DDC01******-PRJ1-EN-E1,44 • 01.97
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