DU-3 Signal Transformers, DU-3 Datasheet

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DU-3

Manufacturer Part Number
DU-3
Description
XFRMR ISO PWR 3KVA 14/28A
Manufacturer
Signal Transformers
Series
DUr
Type
Unit with Screw Type Terminalsr
Datasheet

Specifications of DU-3

Power (watts)
3000VA
Usage
0/208/220/240VAC ~ 0/104/110/120VAC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power Isolation Transformers
Industrial Grade Step-Up or Step-Down Transformers
As shown on the schematic diagram the DU line incorporates dual primaries and secondaries. All four windings are identically rated at 0/104/110/120V. This permits series
or parallel connections on either primary or secondary. Therefore, a nominal 110V to 110V, 220V to 220V, 110V to 220V, or 220V to 110V transformer can be configured.
The winding tap permits intermediate series ratings such as 208V, 214V, or 230V. It is also possible to make auto-transformer connections by connecting a primary group
in series with a secondary group. Such nominal ratings as 440V to 220V or 220V to 440V can be configured in addition to the standard ratings described above. A further
advantage to auto-transformer connection is the fact that the KVA rating of a particular type is doubled.
Custom versions available upon request.
Number
DU-1/4
DU-1/2
DU-7.5
DU-10
DU-1
DU-2
DU-3
DU-5
Part
www.signaltransformer.com
KVA
1/4
1/2
7.5
10
1
2
3
5
Primaries
104
120
110
110
104
120
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
Series Secondaries
0
0
Volts
SU Transformer
Electrostatic Shield
Amps
Max
1.1
2.3
4.5
14
23
31
41
9
Secondaries
0/104/110/120
0/104/110/120
0/104/110/120
0/104/110/120
0/104/110/120
0/104/110/120
0/104/110/120
0/104/110/120
240
208
220
208
240
220
0
Parallel Secondaries
0
Volts
Signal’s DU and SU transformers have been designed to provide a multitude of step-up or
step-down voltages to accommodate various input voltages available throughout the world.
General Specifications
• Power - 250 VA to 10 KVA (500 VA to 20 KVA possible if used as auto-transformer)
• Dielectric Strength - 2500 Vrms Hipot
• Primaries - Dual/tapped primaries: Parallel connected (104V, 110V, 120V - 50-500 Hz)
• Secondaries - Dual/tapped secondaries:
• Electrostatic Shield - Solid copper foil connected to ground. The connection may be
• Terminals - Plated brass screw-type terminals
• Insulation System - Class B, 130º C
• Higher insulation classes available
Series connected (208V, 220V, 230V, 240V)
DU Series - Parallel connected (104V, 110V, 120V - 50-500 Hz)
SU Series - Parallel connected (208V, 220V, 240V - 50-500 Hz)
opened if an un-grounded shield is desired.
Amps
Max
2.2
4.6
18
28
46
62
82
9
Series connected (208V, 220V, 230V, 240V - 50-500 Hz)
Series connected (416V, 440V, 460V, 480V - 50-500 Hz)
48
Toll Free 866-239-5777 • Tel 516-239-5777 • Fax 516-239-7208
sales@signaltransformer.com • techhelp@signaltransformer.com
Number
SU-1/4
SU-1/2
SU-7.5
SU-10
SU-1
SU-2
SU-3
SU-5
Part
©2008 Signal Transformer — Specification subject to change without notice. 07.08
KVA
1/4
1/2
7.5
10
1
2
3
5
Primaries
110
104
104
120
120
110
0/416/440/480
0/416/440/480
0/416/440/480
0/416/440/480
0/416/440/480
0/416/440/480
0/416/440/480
0/416/440/480
Series Secondaries
0
0
Volts
DU Transformer
Electrostatic Shield
500 Bayview Avenue, Inwood, NY 11096
Amps
Max
0.55
1.15
2.25
15.5
20.5
11.5
4.5
7
120
110
104
0
120
110
104
0
Secondaries
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
0/208/220/240
Parallel Secondaries
Volts
Amps
Max
1.1
2.3
4.5
14
23
31
41
9

Related parts for DU-3

DU-3 Summary of contents

Page 1

... Number Volts Amps DU-1/4 1/4 0/208/220/240 DU-1/2 1/2 0/208/220/240 DU-1 1 0/208/220/240 DU-2 2 0/208/220/240 DU-3 3 0/208/220/240 DU-5 5 0/208/220/240 DU-7.5 7.5 0/208/220/240 DU-10 10 0/208/220/240 Custom versions available upon request. www.signaltransformer.com Signal’s DU and SU transformers have been designed to provide a multitude of step-up or step-down voltages to accommodate various input voltages available throughout the world. ...

Page 2

... Power Isolation Transformers Industrial Grade Step-Up or Step-Down Transformers Part Number DU-1/4 SU-1/4 DU-1/2 SU-1/2 DU-1 SU-1 DU-2 SU-2 DU-3 SU-3 DU-5 SU-5 DU-7.5 SU-7.5 DU-10 SU-10 *Maximum † ± 0.6 (1.6mm) ‡ ± 0.12 (3.2mm) Custom versions available upon request. www.signaltransformer.com ...

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