Cast resin transformers - Ruhstrat GmbH

Product overview
Cast resin transformers
according to IEC/EN 60076

There is no substitute for quality
Ruhstrat has decades of experience in the development and manufacture of coilware for
use in electrical engineering. We offer more than innovative technology, because we are
a reliable partner and support our customers with optimal solutions that are adapted to
their needs.
Our decisive advantage is that we take care of more than just development, planning, delivery
and installation of system solutions. We also offer a wide range of services including maintenance,
technical support and replacement parts.
Ruhstrat has been specialized in developing and
designing transformers, reactors, power supplies
and power resistors. Besides the complete standard
programme of these business fields Ruhstrat emphasizes
the design and manufacturing of plants
and systems individually tailored to the requirements
of our customers. We manufacture custommade
transformers, reactors, power supplies and
power resistors. Ruhstrat components are used
wherever products made to specification and small
and minimum batch sizes are needed, so for uses
which cannot be provided with bulk goods.
Product overview:
| Regulating transformers from 20 VA up to 2 MVA
• Ring-type transformers
• Column-type regulating transformers
| Voltage stabilizers from 60 VA up to 2 MVA
• Magnetic voltage stabilizers
• Transformer-type voltage stabilizers
| Power transformers from 50 VA up to 8 MVA
• Low-voltage air-cooled transformers
• Cast resin transformers
| AC/DC chokes
• as power chokes, smoothing chokes, compensation chokes,
filter circuit chokes, motor chokes
| Ring core transformers up to 400 kVA
| High-current transformers up to 30 kA
| Power resistors up to 5 MW
• Tube resistors
• Test resistors
• Lab resistors
• Load resistors
Ruhstrat GmbH · Heinestraße 12 · 37120 Bovenden Phone +49 (0) 55 93 803-0 · Fax +49 (0) 55 93 803-50 E-mail: info@ruhstrat.com · www.ruhstrat.com

General
Ruhstrat offers cast resin transformers as power and
distribution transformers with a power range from
160 kVA to 8 MVA.
To ensure optimal products, materials from first-class
suppliers are used, such as grain-oriented electric
sheets, aluminium and copper coil material using
band and foil technology, as well as high-quality insulating
materials (cast resin, Mylar, Nomex).
Ruhstrat cast resin transformers conform to the applicable
EN and IEC regulations.
• Environmental test E2, climatic test C2 and fire
perfomanel test F1 according to IEC/EN 60076-11
• Lighting impulse test and short circuit test according
to IEC/EN 60076-1-2-3
• in single- and three-phase version
• Power range from 160 kVA up to 8 MVA
• Voltage range up to 36 KV
• Protection types: IP 00 to IP 43
• Winding material: aluminium or copper
• Can be used as:
• Power transformer
• Distribution transformer
• Transformer for rectifier operation for 6, 12, 18
or 24 pulse rectifier operation
• Static converter transformer in two-tier design
• Step-up transformer
• Starting transformer
• Test transformer
Radial flow fans
Up to 40 % increase in the rated power by installing
radial flow fans
Tensioning of coils
Connection of LV
coil
Ruhstrat GmbH · Heinestraße 12 · 37120 Bovenden Phone +49 (0) 55 93 803-0 · Fax +49 (0) 55 93 803-50 E-mail: info@ruhstrat.com · www.ruhstrat.com

Technical information
Three-Phase Cast resin transformers
according to IEC/EN 60076
Standard series 10 kV
Technical data
KV voltage: 10 kV ± 2 × 2,5 % (Insulation class 12/28/60)
LV voltage: 400 V (Insulation class 1.1/3/ - )
Rated frequency: 50 Hz
Vector group:
Dyn5
Insulation material class: F / F
Excess temperature: 100 / 100 K
Enviromental, climatic
and fire classification:
E2-C2-F1
Winding material: Aluminium*
* copper winding upon request
Normal losses
kVA Uk % Po (W)
Pk Pk
Dimensions (mm)
LpA LwA Weight
120 °C 75 °C Io %
(db) (db) (kg)
(W) (W)
A B C
400 4 1,150 4,900 4,280 1.3 54 67 1,350 1,250 820 1,370
400 6 990 5,350 4,670 1.3 53 66 1,260 1,300 820 1,350
500 4 1,300 6,120 5,360 1.2 55 68 1,540 1,350 820 1,440
500 6 1,150 6,900 6,050 1.2 54 67 1,390 1,350 820 1,400
630 4 1,500 7,300 6,410 1.2 55 69 1,820 1,400 850 1,570
630 6 1,370 7,600 6,700 1.2 56 69 1,720 1,450 850 1,550
800 6 1,600 9,200 8,100 1.1 57 71 1,990 1,450 850 1,750
1,000 6 2,000 10,000 8,810 1 58 72 2,560 1,600 1,000 1,800
1,250 6 2,400 12,700 11,220 1 59 74 3,120 1,700 1,000 1,960
1,600 6 2,800 14,000 12,450 0.9 60 75 3,500 1,750 1,000 2,060
Reduced losses
kVA Uk% Po (W)
Pk
120 °C
(W)
Pk
75 °C
(W)
Io%
LpA
(db)
Ruhstrat GmbH · Heinestraße 12 · 37120 Bovenden Phone +49 (0) 55 93 803-0 · Fax +49 (0) 55 93 803-50 E-mail: info@ruhstrat.com · www.ruhstrat.com
LwA
(db)
Weight
(kg)
Dimensions (mm)
A B C
400 4 880 4,900 4,280 1.1 49 62 1,350 1,250 820 1,370
400 6 700 5,350 4,670 1.1 48 61 1,260 1,300 820 1,350
500 4 1,080 6,120 5,360 1 50 64 1,540 1,350 820 1,440
500 6 950 6,900 6,050 1 50 63 1,390 1,350 820 1,400
630 4 1,150 7,300 6,410 1 50 64 1,850 1,400 850 1,590
630 6 1,030 7,600 6,700 1 50 63 1,770 1,450 850 1,550
800 6 1,350 9,200 8,100 0.9 52 66 1,990 1,450 850 1,750
1,000 6 1,500 10,000 8,810 0.8 52 66 2,660 1,600 1,000 1,820
1,250 6 1,900 12,700 11,220 0.8 54 68 3,150 1,700 1,000 1,960
1,600 6 2,100 14,000 12,450 0.75 54 69 3,600 1,750 1,000 2,080

Technical information
Three-Phase Cast resin transformers
according to IEC/EN 60076
Standard series 20 kV
Technical data
KV voltage: 20 kV ± 2 × 2,5 % (Insulation class 24/50/95)
LV voltage: 400 V (Insulation class 1.1/3/ - )
Rated frequency: 50 Hz
Vector group:
Dyn5
Insulation material class: F / F
Excess temperature: 100 / 100 K
Enviromental, climatic
and fire classification:
E2-C2-F1
Winding material: Aluminium*
* copper winding upon request
Normal losses
kVA Uk % Po (W)
Pk
120 °C
(W)
Pk
75 °C
(W)
Io %
Ruhstrat GmbH · Heinestraße 12 · 37120 Bovenden Phone +49 (0) 55 93 803-0 · Fax +49 (0) 55 93 803-50 E-mail: info@ruhstrat.com · www.ruhstrat.com
LpA
(db)
LwA
(db)
Weight
(kg)
Dimensions (mm)
A B C
400 4 1,400 4,900 4,250 1.3 56 69 1,530 1,400 820 1,420
400 6 1,200 5,500 4,840 1.3 54 68 1,400 1,400 820 1,380
500 4 1,640 6,250 5,480 1.2 57 70 1,760 1,450 820 1,470
500 6 1,350 6,700 5,900 1.2 55 69 1,580 1,500 820 1,430
630 4 1,900 6,900 6,040 1.2 58 72 2,060 1,500 850 1,620
630 6 1,650 7,800 6,820 1.2 57 71 1,800 1,500 850 1,580
800 6 1,950 9,100 8,000 1.1 58 72 2,180 1,550 850 1,690
1,000 6 2,300 11,000 9,650 1 59 74 2,580 1,650 1,000 1,850
1,250 6 2,700 13,500 11,880 1 60 75 3,130 1,750 1,000 1,990
1,600 6 3,100 16,000 14,130 0.9 61 76 3,580 1,800 1,000 2,110
Reduced losses
kVA Uk% Po (W)
Pk
120 °C
(W)
Pk
75 °C
(W)
Io%
LpA
(db)
LwA
(db)
Weight
(kg)
Dimensions (mm)
A B C
400 4 1,100 4,900 4,250 1.1 50 63 1,600 1,400 820 1,420
400 6 940 5,500 4,840 1.1 49 63 1,430 1,400 820 1,380
500 4 1,340 6,250 5,480 1 52 65 1,780 1,450 820 1,490
500 6 1,050 6,700 5,900 1 50 64 1,600 1,500 820 1,430
630 4 1,600 6,900 6,040 1 53 67 2,060 1,500 850 1,620
630 6 1,250 7,800 6,820 1 51 65 1,860 1,500 850 1,580
800 6 1,580 9,100 8,000 0.9 53 67 2,200 1,550 850 1,690
1,000 6 1,800 11,000 9,650 0.8 54 68 2,650 1,650 1,000 1,850
1,250 6 2,200 13,500 11,880 0.8 55 70 3,170 1,750 1,000 2,010
1,600 6 2,400 16,000 14,130 0.75 55 70 3,680 1,800 1,000 2,130

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Binding Posts
Sockets
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Cast Resin Transformers
Transformers
Chokes
Power Resistors
Emergency Power Supply
Safety Lighting
Industrial Furnaces
Ruhstrat GmbH
Heinestrasse 12
D-37120 Bovenden
Phone +49 (0) 5593 803-0
Fax +49 (0) 5593 803-50
E-mail: info@ruhstrat.com
Internet: www.ruhstrat.com
Department:
Transformers
Phone +49 (0) 55 93 803-37
Fax +49 (0) 55 93 803-937
E-mail: trafo@ruhstrat.com
Export division
Phone +49 (0) 55 93 803-17
Fax +49 (0) 55 93 803-80
E-mail: export@ruhstrat.com
06 / 2010 All information provided is subject to change without notice. Technical details subject to change.