Power transformers
Oil-immersed and dry-type transformers 10 and 35 kV rated from 30 to 10 000 kVA. The partner factory in Shandong province has been operating since 1996, with 50 000 m² of production space; every transformer passes factory acceptance tests.
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Catalogue by product line
Open a series — first the factory video, then the specifications.
Oil-immersed transformersOil-cooled power transformers 10 and 35 kV, including OLTC units6 series
Oil-immersed transformer S11 10/0.4 kVBasic series of oil-immersed power transformers, 30–3150 kVA30–3 150 kVA
Three-phase power transformer with natural oil cooling for 6–10 kV distribution networks. The most affordable series, suited to sites where budget matters more than losses.
- Series
- S11
- Voltage
- 10 (6) / 0.4 kV
- Rating
- 30–3 150 kVA
- Versions
- 19
Oil-immersed transformer S13 10/0.4 kVReduced no-load losses; 30–4000 kVA30–4 000 kVA
Energy-efficient series: a core of cold-rolled electrical steel with improved stacking gives lower no-load losses than S11. Pays off at sites with round-the-clock load.
- Series
- S13
- Voltage
- 10 (6) / 0.4 kV
- Rating
- 30–4 000 kVA
- Versions
- 20
Oil-immersed transformer S20 10/0.4 kVHigh energy-efficiency class; 30–2500 kVA30–2 500 kVA
A series with low no-load and load losses. Made in two versions: to the Chinese national standard and to grid-company requirements, with copper or aluminium windings.
- Series
- S20
- Voltage
- 10 (6) / 0.4 kV
- Rating
- 30–2 500 kVA
- Versions
- 18
Oil-immersed transformer S22 10/0.4 kVLowest losses in the oil-immersed range; 30–2500 kVA30–2 500 kVA
The top energy-efficiency tier among the factory's oil-immersed transformers. For sites with high electricity tariffs and strict loss requirements.
- Series
- S22
- Voltage
- 10 (6) / 0.4 kV
- Rating
- 30–2 500 kVA
- Versions
- 18
Oil-immersed transformer 35/0.4 kVFor 35 kV networks with direct step-down to 0.4 kV; 50–4000 kVA50–4 000 kVA
35 kV class power transformers for industrial sites, open-pit mines and remote facilities where it pays to step down the voltage in one stage.
- Series
- S11-35
- Voltage
- 35 / 0.4 kV (also 35/10, 35/6 kV)
- Rating
- 50–4 000 kVA
- Versions
- 19
Oil-immersed transformer with OLTCOn-load voltage regulation; 100–10 000 kVA, 10 and 35 kV100–10 000 kVA
Transformers with an on-load tap changer (OLTC). They keep the consumer's voltage stable when the supply network fluctuates, without disconnecting the load.
- Series
- SZ
- Voltage
- 10 / 0.4; 35 / 10.5; 35 / 0.4 kV
- Rating
- 100–10 000 kVA
- Versions
- 12
Dry-type transformersCast-resin insulation for indoor installation4 series
Dry-type transformer SCB10 / SCB11Cast-resin insulation, oil-free; 50–3150 kVA50–3 150 kVA
Dry-type transformers with cast epoxy insulation for indoor installation: shopping centres, hospitals, basement substations, production halls.
- Series
- SCB10/11
- Voltage
- 10 (6) / 0.4 kV
- Rating
- 50–3 150 kVA
- Versions
- 18
Dry-type transformer SCB12 / SCB13Reduced losses; 50–3150 kVA50–3 150 kVA
Energy-efficient dry-type transformers with lower no-load losses than the SCB10/11 series.
- Series
- SCB12/13
- Voltage
- 10 (6) / 0.4 kV
- Rating
- 50–3 150 kVA
- Versions
- 18
Dry-type transformer SCB14 / SCB18Highest energy-efficiency class among dry-type units; 50–2500 kVA50–2 500 kVA
Latest-generation dry-type transformers with minimum losses. For sites with high energy-efficiency and fire-safety requirements.
- Series
- SCB14/18
- Voltage
- 10 (6) / 0.4 kV
- Rating
- 50–2 500 kVA
- Versions
- 17
Dry-type transformer 35 kVDry-type design for 35 kV networks500–3 150 kVA
35 kV class dry-type transformers for indoor installation where an oil-immersed transformer is prohibited or undesirable.
- Series
- SCB-35
- Voltage
- 35 / 0.4; 35 / 10 kV
- Rating
- 500–3 150 kVA
- Versions
- 8
SpecialIsolation transformers and non-standard voltages1 series
Isolation transformersGalvanic isolation and non-standard voltages: 250–3000 kVA250–3 000 kVA
Isolation transformers for galvanic separation of networks and for supplying equipment with non-standard voltage, e.g. 380 / 208 V for imported machinery.
- Series
- ISO
- Voltage
- 0.4 / 0.4; 0.38 / 0.208 kV and others
- Rating
- 250–3 000 kVA
- Versions
- 5
Package substationsTurnkey substations: transformer, HV and LV switchgear and enclosure4 types
Box-type substation (European type)Transformer, HV switchgear compartment and LV switchgear compartment in one metal enclosure
Transformer, HV switchgear compartment and LV switchgear compartment in one metal enclosure. Installed on a foundation, serviced through the compartment doors.
- Transformer
- oil-immersed or dry-type
- ZGS
- 75–3 750 kVA
- Quotation
- per questionnaire
- Tests
- at the factory
American-type package substation ZGSTransformer and HV section in one tank, cable entries via separable insulated connectors
Transformer and HV section in one tank, cable entries via separable insulated connectors. Compact, for ring and radial networks.
- Transformer
- oil-immersed or dry-type
- ZGS
- 75–3 750 kVA
- Quotation
- per questionnaire
- Tests
- at the factory
Substations for solar and wind plantsStep-up substations for solar and wind power plants: transformer and switchgear on a common frame.
Step-up substations for solar and wind power plants: transformer and switchgear on a common frame.
- Transformer
- oil-immersed or dry-type
- ZGS
- 75–3 750 kVA
- Quotation
- per questionnaire
- Tests
- at the factory
Containerised (prefabricated) substationsAll equipment is installed and tested at the factory inside the container — only the cables remain to be connected on site.
All equipment is installed and tested at the factory inside the container — only the cables remain to be connected on site.
- Transformer
- oil-immersed or dry-type
- ZGS
- 75–3 750 kVA
- Quotation
- per questionnaire
- Tests
- at the factory