Block AT370-20/21-4 Catalog Page
Autotransformer
AT3
Typ AT3 2-20/21-4 AT3 2-22/23-4 AT3 2-24/35-4 AT3 2-38/42-4 AT3 2-44/46-4 AT3 2-48/50-4
Input
Rated input voltage 3 x 200/208 Vac 3 x 220/230 Vac 3 x 240/346 Vac 3 x 380/415 Vac 3 x 440/460 Vac 3 x 480/500 Vac
Frequency range 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz
Output
Rated output voltage 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac
Rated Power 2.000 VA 2.000 VA 2.000 VA 2.000 VA 2.000 VA 2.000 VA
Vector group
YNaO YNaO YNaO YNaO YNaO YNaO
Efficiency 91.0 % 90.0 % 90.0 % 78.0 % 87.0 % 90.0 %
Approvals
Approvals cURus cURus cURus cURus cURus cURus
Environment
Ambient temperature max. 40 °C 40 °C 40 °C 40 °C 40 °C 40 °C
Safety and protection
Type
Open type Open type Open type Open type Open type Open type
Insulation class
F F F F F F
Protection index
IP 00 IP 00 IP 00 IP 00 IP 00 IP 00
Safety class (prepared)
I I I I I I
Short circuit strength
non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof
Test voltage 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz
Order numbers
Recommended enclosure BGUK 10 BGUK 10 BGUK 10 BGUK 3 BGUK 10 BGUK 10
Order Number AT3 2-20/21-4 AT3 2-22/23-4 AT3 2-24/35-4 AT3 2-38/42-4 AT3 2-44/46-4 AT3 2-48/50-4
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Transformers
Autotransformers
1
Autotransformer
AT3
General Data
Rated input voltage 3 x 200/208 - 3 x 690 Vac
Rated output voltage 3 x 400 Vac
Rated power 2000 - 250000 VA
Insulation class F
Maximum ambient temperature 40 °C
Efficiency up to 98 %
Degree of protection IP 00
Optionally adapted package for higher degrees of protection
Advantages
Low weight and small size (compared to isolating transformers)
Very high efficiency
Patented assembly technology to lower heat losses
Very good corrosion protection and low noise thanks to vacuum
impregnation
Fixed, contact protected screw connection terminals complying
with UVV BGV A3
Multifunctional fixing rails with 12 oval slots
Enlarged fixing rail for easy installation from above
Integrated crane eyes
Standards ? Z
Applications
Autotransformer for adjustment of the voltage on the input and output sides
with no requirement for electrical isolation.
Sample application
Approvals W J Z
Autotransformer
to: VDE 0570 Teil 2-13, DIN EN 61558-2-13, EN 61558-2-13,
IEC 61558-2-13, UL 5085-1/-2, CSA 22.2 No.66
Subject to change
198
UL 5085-1/-2, CSA 22.2 No.66
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Autotransformer
AT3
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1.2
5.1
1.3
2.1
2.2
3.1
3.2
3.3
5.2
4.0
Transformers
Autotransformers
1
Autotransformer
AT3
Typ AT3 70-20/21-4 AT3 70-22/23-4 AT3 70-24/35-4 AT3 70-38/42-4 AT3 70-44/46-4 AT3 70-48/50-4
Input
Rated input voltage 3 x 200/208 Vac 3 x 220/230 Vac 3 x 240/346 Vac 3 x 380/415 Vac 3 x 440/460 Vac 3 x 480/500 Vac
Frequency range 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz
Output
Rated output voltage 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac
Rated Power 70.000 VA 70.000 VA 70.000 VA 70.000 VA 70.000 VA 70.000 VA
Vector group
Efficiency 98.0 % 97.0 % 97.0 % 93.0 % 96.0 % 96.0 %
Approvals
Approvals cURus cURus cURus cURus cURus cURus
Environment
Ambient temperature max. 40 °C 40 °C 40 °C 40 °C 40 °C 40 °C
Safety and protection
Type
Insulation class
Protection index
Safety class (prepared)
Short circuit strength
Test voltage 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz
Order numbers
Recommended enclosure BGE-085 BGE-085 BGE-085 BGE-065 BGE-080
Order Number AT3 70-20/21-4 AT3 70-22/23-4 AT3 70-24/35-4 AT3 70-38/42-4 AT3 70-44/46-4 AT3 70-48/50-4
YNaO YNaO YNaO YNaO YNaO YNaO
Open type Open type Open type Open type Open type Open type
F F F F F F
IP 00 IP 00 IP 00 IP 00 IP 00 IP 00
I I I I I I
non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof
1.1
Typ AT3 70-58/60-4 AT3 70-69-4 AT3 110-20/21-4 AT3 110-22/23-4 AT3 110-24/35-4 AT3 110-38/42-4
Input
Rated input voltage 3 x 575/600 Vac 3 x 690 Vac 3 x 200/208 Vac 3 x 220/230 Vac 3 x 240/346 Vac 3 x 380/415 Vac
Frequency range 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz
Output
Rated output voltage 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac 3 x 400 Vac
Rated Power 70.000 VA 70.000 VA 110.000 VA 110.000 VA 110.000 VA 110.000 VA
Vector group
Efficiency 97.0 % 97.0 % 98.0 % 98.0 % 98.0 % 94.0 %
Approvals
Approvals cURus - cURus cURus cURus cURus
Environment
Ambient temperature max. 40 °C 40 °C 40 °C 40 °C 40 °C 40 °C
Safety and protection
Type
Insulation class
Protection index
Safety class (prepared)
Short circuit strength
Test voltage 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz
Order numbers
Recommended enclosure BGE-080 BGE-080 BGE-085 BGE-085 BGE-085 BGE-065
Order Number AT3 70-58/60-4 AT3 70-69-4 AT3 110-20/21-4 AT3 110-22/23-4 AT3 110-24/35-4 AT3 110-38/42-4
YNaO YNaO YNaO YNaO YNaO YNaO
Open type Open type Open type Open type Open type Open type
F F F F F F
IP 00 IP 00 IP 00 IP 00 IP 00 IP 00
I I I I I I
non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof
Subject to change
203
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