SUBIA manufactures and supplies transformers for utility networks, industrial facilities, buildings and energy projects. Explore eight product series, compare the electrical and installation requirements, and send your drawings for a configuration review.
Compare construction, electrical ratings and installation requirements across the eight transformer series.
Oil-immersed distribution and 35 kV power transformer construction.
SCB cast-resin and SCBH amorphous-core dry-type transformers.
SZ and SZF oil-immersed transformers with on-load tap changing.
ZGS pad-mounted transformer equipment with enclosed compartments.
Cuve d’huile étanche avec revêtement anticorrosion C5-M. Correctement montés, les connecteurs de câbles embrochables haute tension assurent l’étanchéité du raccordement sur les traversées compatibles.
Open dry-type assemblies and SCB epoxy resin cast constructions for electrical isolation.
D-series single-phase oil-immersed transformers for pole-mounted installations.
Transformateurs adaptés aux exigences électriques ou aux conditions d’installation du projet, dont la série S avec capot antipoussière.
Construction
Oil-immersed
Installation
Pad-mounted
Construction
Dry-type
Electrical function
Isolation
kVA is apparent power. Use electrical input power and true power factor from the same operating condition to convert kW to kVA.
kVA = kW ÷ power factor
Enter a non-negative kW value and a power factor greater than 0 and no more than 1.
Use input power and true power factor from the same operating condition. Review operating duty before choosing a transformer rating.
State the incoming voltage, required secondary voltage, frequency and expected supply variation.
Specify the regulation requirement, tap range, step size, sensing point and control responsibilities. If an outage is acceptable, state when a fixed tap can be reviewed.
| Code | Construction | Air cooling |
|---|---|---|
| ONAN | Oil-immersed | Natural |
| ONAF | Oil-immersed | Forced |
| AN | Dry-type | Natural |
| AF | Dry-type | Forced |
Read each cooling stage with its rated capacity. Confirm auxiliary power, controls and documented capacity when required fans are unavailable.
Request losses on the same test and temperature basis. Compare the same operating profile, energy cost and evaluation period.
Keep the required efficiency or loss specification attached to the proposed rating and construction.
Start with retained connections, voltage regulation, feeder changes and permitted outages. Review power or oil-immersed transformers against the network duty.
Explore application Read a transformer nameplate
Establish coincident production demand, motor starting, drive inputs and expansion stages. Compare dry-type and oil-immersed installations with the room or outdoor site requirements.
Explore application Select an industrial distribution transformer
For charging hubs and data centers, distinguish charger or UPS input, cooling demand and maintenance transfers. Compare the required load cases and installation before selecting a transformer.
Explore application Review data-center transformer sizing
Define inverter or PCS AC data, import and export duties, reactive power and the collector connection. Identify whether the quotation covers a transformer or an integrated step-up station.
Explore application Review BESS transformer sizing
SUBIA develops transformer configurations from your ratings and drawings, reviewing the electrical requirements and installation interfaces together.
Transformer design, production and sales are coordinated in Yueqing, Wenzhou to support the technical requirements of your order.
Routine test records identify the supplied transformer, while applicable type-test documents are matched to the model, rated voltage and required standard for review.
Packing lists, package markings and accessory details are coordinated with the agreed delivery scope, helping your team plan equipment receipt, lifting and unloading.
Yes. Send the required voltage pair, estimated load, installation location and a single-line diagram if available. Identify which information is confirmed and which still needs review. SUBIA can use that brief to discuss the construction and configuration with your team.
Include the existing nameplate, connection and outline drawings, cable or busbar interfaces, load information and the planned outage. Identify dimensions and connections that must remain unchanged. Include the details of any transformer that will operate in parallel with the replacement.
Compare the planned load stages and the installation before deciding. A larger unit, a later additional unit and a revised supply arrangement create different loading, space and connection requirements. Include the expected expansion date, operating plan and permitted shutdowns in the review.
Specify the required standard and evidence in the enquiry. Ask which documents apply to the proposed design, which results will identify the supplied unit, and which inspections require your participation. Agree the document list and acceptance requirements before the order progresses.
