BBELC
THREE-PHASE • CUSTOM AC POWER ISOLATION
AC Power Isolation Transformer
Configuration: Custom project specification
BBELC supplies custom three-phase dry-type transformers for AC voltage conversion and galvanic isolation between primary and secondary circuits. The AC Power Isolation Transformer is specified around voltage, capacity, frequency, winding arrangement, impedance, insulation, cooling, enclosure and site conditions so engineers can align the transformer with industrial, commercial or sensitive-equipment power systems.
- Rated voltageUp to 35 kV; confirm by project
- Rated power100 kVA–12 MVA; confirm by project
- Insulation classF / H by configuration
- ConfigurationThree-phase, independent primary and secondary windings
- Primary applicationAC voltage conversion and galvanic isolation
- CustomizationCapacity, impedance, vector group, cooling and enclosure
Final rating, grounding and protection follow the approved technical agreement.
AC SELECTION CHECKLIST
AC Selection & Isolation Checklist
Define the electrical duty before comparing a transformer. Isolation, voltage conversion, grounding and power-quality goals can require different winding, screen, protection and test arrangements.
Input And Output Duty
State primary and secondary voltage, frequency, phase, continuous VA/kVA, power factor and allowed voltage deviation. Confirm whether the load is linear, rectifier, inverter, motor or cyclic.
Independent Windings
Confirm that primary and secondary have no intended conductive connection. A shared-winding autotransformer does not provide the same electrical isolation; specify neutral, screen and protective-earth arrangements.
Screen, Grounding And Protection
If common-mode control or a new neutral is required, define screen layers, terminals, reference point, fault clearing, overcurrent and earth-fault/insulation monitoring responsibilities.
Site And Acceptance
Provide enclosure, altitude, ambient, humidity, dust/salt, cooling, access, lifting, harmonics and test-document requirements before drawing release.
TEST & DELIVERY EVIDENCE
Test Scope & Delivery Evidence
Keep the quotation, approved drawing and test plan aligned so the isolation function, ratio, thermal duty and installation interfaces can be checked before shipment.
Routine Electrical Checks
Agree the applicable checks for winding resistance, ratio and phase relationship, insulation, applied/induced voltage, losses, impedance and—where required—partial discharge.
Model-Specific Evidence
Link every guaranteed value to the selected rating, winding arrangement, cooling state, test temperature and agreed method. Do not transfer a single transformer report to another model.
Shipment And Site File
Confirm rating plate, approved drawing, wiring/grounding notes, test report, OQC record, packing list and transport protection before release.
PRODUCT PHOTOS
Angles For Assembly And Interface Review.
Three product views show the assembly from complementary angles.
COMPLETE SPECIFICATIONS
Electrical Ratings And Project Inputs.
The product range is shown below; the approved project datasheet controls the final rating and interfaces.
| Product name | AC Power Isolation Transformer |
|---|---|
| Model / configuration | Custom project configuration; no fixed part number supplied |
| Product category | Three-phase dry-type isolation transformer |
| Rated voltage | Up to 35 kV; project-specific voltage and insulation coordination |
| Rated power | 100 kVA–12 MVA; final continuous rating by project |
| Insulation / material | Cast resin insulation reference; final insulation system and materials by confirmed design |
| Connection / interface | Independent primary/secondary windings; terminals, neutral, screen, vector group and impedance by project |
| Applicable standard | IEC 60076-11 / GB/T 1094.11 when within confirmed product scope; confirm the project standard |
| Marking / traceability | Rating plate, approved drawing, test report and OQC/packing documents by agreed delivery scope |
| Packaging unit | Transport packing and lifting arrangement by approved project plan |
APPLICATIONS & EQUIPMENT
Industrial, UPS And Test Power Applications.
Match the transformer to the single-line diagram, load duty, grounding concept and installation environment.
Industrial Power Distribution
Customize voltage, capacity, impedance and grounding/protection interfaces to fit industrial plant distribution and defined load duty.
UPS, Data & Sensitive Equipment
Use where galvanic isolation or an independent secondary reference is required; confirm UPS normal, bypass and battery modes plus neutral/ground arrangements.
Test, Renewable & Marine Power Systems
Factory/test, renewable or marine applications may require harmonics, cyclic load, salt/humidity, enclosure and transport review; do not assume a generic rating.
MATERIALS & MANUFACTURING
Insulation, Process And Environment.
The final materials and process follow the approved project design.
Insulation / grade
Cast resin insulation is described for this product; the final dry-type insulation system and materials follow the selected design.
Manufacturing process
Contract review, design, material/IQC, winding and insulation, core processing, assembly, final testing, OQC and packing.
Surface / enclosure
Cooling, enclosure and anti-corrosion/three-proof treatment are selected for the installation environment and design duty.
PERFORMANCE & WORKING CONDITIONS
Electrical Ratings And Operating Boundaries.
Use these rating boundaries for early selection; the approved technical agreement controls the final design.
CUSTOMIZATION
Configurable Electrical And Mechanical Interfaces.
Align each option with the single-line diagram, site conditions and approved drawing before release.
- Capacity / voltage
Adjust capacity and primary/secondary voltage around the single-line diagram and load duty. - Winding / connection
Define independent windings, phase, vector group, neutral, screen terminals and connection arrangement. - Impedance / regulation
Confirm short-circuit impedance, voltage drop, tap arrangement and protection coordination.
- Cooling / enclosure
Select natural/forced cooling, enclosure, ventilation and environment protection by project. - Dimensions / installation
Align overall dimensions, clearances, cable/bus interfaces, lifting and transport path with the approved drawing. - Testing / documents
Agree routine tests, witnessed/third-party scope, test report, drawing, OQC and shipment file before release.
PRE-SALES & AFTER-SALES SERVICE
Engineering Support Across The Project Lifecycle.
Support follows the agreed project scope and technical-document package.
Pre-order engineering
Review voltage, capacity, frequency, phase, winding, grounding, impedance, cooling, enclosure, dimensions, environment and project documents before quotation.
Production and QA
Coordinate design freeze, material/IQC, winding and assembly checkpoints, final testing, OQC, packing and agreed shipment documents.
After delivery
Support installation and operating-guidance review, issue analysis and repeat-supply coordination within the agreed project scope; no fixed response time is published.
FACTORY & MANUFACTURER
Manufacturing And Quality Capability.
Shanghai Beibian combines special-transformer manufacturing with digital production and quality management.
Shanghai Beibian Technology Co., Ltd.
Shanghai Beibian Technology Co., Ltd. develops and manufactures special transformers and power-conversion products. Company information identifies manufacturing locations in Shanghai Songjiang, Wenzhou and Jinan, with project support across industrial, renewable, data-center, marine and test-power applications.
- Special transformer design and manufacturing
- PLM, ERP, MES and QMS-linked production and quality processes
- Project-based OEM/engineering customization
- Testing, OQC, packing and technical-document support
REQUEST A TECHNICAL QUOTE
Specify The AC Duty, Isolation And Site Conditions.
- +86 152 6708 2061
- [email protected]
- WhatsApp: +86 152 6708 2061
- 333 Minta Road, Songjiang
District, Shanghai