66/69 kV Power Transformer
- Voltage
- 66 kV or 69 kV
- Capacity
- 10–120 MVA
- Standard
- IEC 60076 or IEEE C57 series
POWER TRANSFORMERDISTRIBUTION TRANSFORMERDRY-TYPE TRANSFORMERPAD & POLE-MOUNTED TRANSFORMERPREFABRICATED SUBSTATIONSOLAR EPC EQUIPMENTSWITCHGEARTECHNICAL SUPPORTORDER FOLLOW-UPGLOBAL DELIVERY
PRODUCTS
Select a category to see the main product types, typical applications and available models.
Product Category
Power Transformer
Power transformers for 66/69 kV to 220/230 kV transmission and grid projects.
110/115 kV Power Transformer
- Voltage
- 110 kV or 115 kV
- Capacity
- 20–200 MVA
- Standard
- IEC 60076 or IEEE C57 series
220/230 kV Power Transformer
- Voltage
- 220 kV or 230 kV
- Capacity
- 60–400 MVA
- Standard
- IEC 60076 or IEEE C57 series
Product Category
Oil-Immersed Distribution Transformer
Oil-immersed distribution transformers for utility and industrial power networks.
11 kV Oil-Immersed Distribution Transformer
- Voltage
- Up to 12 kV class
- Capacity
- 50–5000 kVA
- Standard
- IEC 60076, IEC 60076-20
20/24 kV Oil-Immersed Distribution Transformer
- Voltage
- 20 kV or 24 kV class
- Capacity
- 100–5000 kVA
- Standard
- IEC 60076, EN requirements where applicable
33/35 kV Oil-Immersed Distribution Transformer
- Voltage
- 33 kV or 35 kV class
- Capacity
- 500–20,000 kVA
- Standard
- IEC 60076
Product Category
Dry-Type Transformer
Cast-resin and VPI dry-type transformers for indoor and industrial use.
Cast Resin Dry-Type Transformer
- Voltage
- Up to 35 kV
- Capacity
- 100–20,000 kVA
- Standard
- IEC 60076-11
VPI Dry-Type Transformer
- Voltage
- Up to 15 kV typical
- Capacity
- 50–5000 kVA
- Standard
- IEC 60076-11 or IEEE C57.12.01
Product Category
Pad & Pole-Mounted Transformer
Three-phase pad-mounted, single-phase pad-mounted and single-phase pole-mounted transformers.
Three-Phase Pad-Mounted Transformer
- Voltage
- Up to 34.5 kV class
- Capacity
- 75–10,000 kVA
- Standard
- IEEE C57.12.34, CSA where specified
Single-Phase Pad-Mounted Transformer
- Voltage
- Up to 34.5 kV class
- Capacity
- 10–250 kVA
- Standard
- IEEE C57.12.38, CSA where specified
Single-Phase Pole-Mounted Transformer
- Voltage
- Up to 34.5 kV class
- Capacity
- 5–500 kVA
- Standard
- IEEE C57.12.20, CSA where specified
Product Category
Prefabricated Substation System
Outdoor compact, prefabricated modular and containerized substations.
Compact Transformer Substation
- Voltage
- Up to 40.5 kV
- Capacity
- 200–5000 kVA
- Standard
- IEC 62271-202 and applicable equipment standards
Prefabricated Modular Substation
- Voltage
- Up to 40.5 kV typical
- Capacity
- Project-specific
- Standard
- IEC 62271 series and project requirements
Containerized E-House Substation
- Voltage
- Up to 40.5 kV typical
- Capacity
- Project-specific
- Standard
- IEC 62271 series and project requirements
Product Category
Solar EPC Equipment Package
Electrical equipment packages for solar collection, step-up and grid connection.
Utility-Scale Solar EPC Equipment Package
- Voltage
- DC, LV, MV and grid-connection voltage project-specific
- Capacity
- From MW-scale blocks to utility plants
- Standard
- IEC, IEEE and local grid code
Solar MV Step-Up Station
- Voltage
- LV inverter output to 20/33/35 kV
- Capacity
- 1–10 MVA per block typical
- Standard
- IEC 60076, IEC 62271 and grid requirements
Solar Grid-Connection Substation Package
- Voltage
- 35 kV to 66/110/132/220 kV
- Capacity
- Project-specific
- Standard
- IEC/IEEE and local grid code
Product Category
Special Transformer
Isolation, rectifier and mining explosion-proof transformers.
Industrial Isolation Transformer
- Voltage
- LV and MV classes
- Capacity
- 1 kVA–10 MVA
- Standard
- IEC 61558, IEC 60076 or project standard
Rectifier Transformer
- Voltage
- Up to 35 kV input typical
- Capacity
- 100 kVA–50 MVA
- Standard
- IEC 61378 and project requirements
Mining Explosion-Proof Transformer
- Voltage
- Up to 10 kV typical
- Capacity
- 50–4000 kVA
- Standard
- Applicable mining and explosion-protection requirements
Product Category
HV, MV & LV Switchgear
High-, medium- and low-voltage switchgear for power distribution and control.
High-Voltage GIS Switchgear
- Voltage
- 72.5–252 kV
- Capacity
- Project-specific bus and fault rating
- Standard
- IEC 62271 series
KYN28 Metal-Clad MV Switchgear
- Voltage
- 3.6–40.5 kV
- Capacity
- Up to 4000 A; fault rating project-specific
- Standard
- IEC 62271-200
GCS Withdrawable LV Switchgear
- Voltage
- Up to 690 V
- Capacity
- Up to 6300 A
- Standard
- IEC 61439
INFORMATION FOR A FASTER QUOTATION
Send the information already available. Unknown items can be confirmed during technical review.
Rated capacity
Required kVA or MVA rating
Primary and secondary voltage
System voltage and required load voltage
Frequency and phase
50 or 60 Hz, single-phase or three-phase
Applicable standard
IEC, IEEE/ANSI, CSA or utility specification
Quantity and destination
Number of units, destination country and delivery location
Required delivery date
Requested month, quarter or project milestone
01SELECT PRODUCT
02CONFIRM REQUIREMENTS
03RECEIVE PROPOSAL
04COORDINATE DELIVERY
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APEX-ELECTRICS
Apex Electrics is the international power equipment brand of Apex Technologies Co., Ltd. Our product range includes power transformers, oil-immersed distribution transformers, dry-type transformers, pad- and pole-mounted transformers, prefabricated substations, solar EPC equipment packages, special transformers, and HV, MV and LV switchgear.
Based in Beijing, our international business and project team works closely with an experienced manufacturing base in Jiangsu. The combined capabilities cover engineering design, production, testing, OEM/ODM and project-specific customization.
Apex provides customers with one clear contact for technical communication, production follow-up, quality documentation, packing and export delivery.
This is the official Apex Electrics technical and product-selection center, providing engineering references and direct project quotation support.
Learn more about Apex →
Affordable Power, Brighter World.
PARTNER PRODUCTION
VERIFIED BUSINESS PRESENCE
Apex Technologies Co., Ltd. maintains an official Alibaba.com storefront for customers who prefer to review our supplier profile and communicate through an established B2B platform.
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Supplier verification was conducted onsite by TÜV Rheinland through Alibaba.com’s Verified Supplier program.
- Business entity
- Apex Technologies Co., Ltd.
- Verification channel
- Alibaba.com Verified Supplier
APPLICATIONS
Our transformers, substations and switchgear are selected to suit the load, installation environment and reliability needs of each project.
01 · APPLICATION
Utilities & Power Stations
Transformers, substations and switchgear for power stations, transmission substations and distribution networks.
02 · APPLICATION
Commercial Buildings
Indoor and outdoor power distribution for offices, shopping centers and mixed-use buildings.
03 · APPLICATION
Schools & Healthcare
Low-noise, fire-conscious power systems for schools, campuses, hospitals and clinics.
04 · APPLICATION
Public Infrastructure
Transformer and switchgear packages for railways, airports, water systems and public services.
05 · APPLICATION
Residential Communities
Distribution transformers and compact equipment for neighborhoods and apartment developments.
06 · APPLICATION
Renewable Energy Projects
Step-up transformers, MV collection equipment and grid-connection systems for solar and renewable-energy projects.
PROJECTS
See how voltage, capacity, installation location and grid requirements affect product selection.
Nepal · PROJECT
Nepal · Terai Distribution Network Expansion
500 distribution transformers · 11 kV and 400 V network works
Romania · PROJECT
Romania · 1.2 GWp Solar Grid Connection
Solar collector system · main step-up substation · 400 kV grid interface
United States · PROJECT
United States · 90 MW Solar Collector Transformer System
28 solar collector transformers · 3.75 MVA each · 34.5/115 kV interconnection
RESOURCES
Read practical product guidance, purchasing information and updates from the electrical industry.
TECHNICAL ARTICLE
Transformer Oil Testing Guide: DGA, Moisture, BDV and Sampling
Understand transformer oil testing, including dissolved gas analysis, moisture, breakdown voltage, sampling control, trend review and RFQ requirements.
TECHNICAL ARTICLEHow to Read a Transformer Nameplate: A Buyer’s Engineering Guide
Read transformer nameplate ratings correctly, including MVA, voltage, frequency, taps, vector group, impedance, insulation levels, cooling and mass.
TECHNICAL ARTICLETransformer Parallel Operation: Ratio, Vector Group and Impedance Requirements
Learn the voltage ratio, vector group, tap, impedance, protection and load-sharing checks required before transformers operate in parallel.
TECHNICAL ARTICLETransformer Inrush Current: Causes, Protection and Energization Planning
Understand transformer magnetizing inrush, residual flux, harmonic restraint, differential protection and the data needed for safe energization planning.
TECHNICAL ARTICLE50 Hz vs 60 Hz Transformers: Design Differences and Selection Guide
Compare 50 Hz and 60 Hz transformer design, volts-per-hertz limits, frequency conversion risks, auxiliaries and the system data needed for a reliable selection.
TECHNICAL ARTICLEOLTC vs DETC: How to Select a Transformer Tap Changer
Compare OLTC and de-energized tap changers, understand their operating limits, and identify the tap range, controls and duty data needed for a transformer enquiry.
FAQ
Find clear answers about products, standards, quotations, testing and delivery.
Yes. Apex can coordinate export packing, commercial documents and international shipment according to the agreed Incoterms and destination requirements.
Lead time depends on product type, rating, customization, material availability and factory schedule. Apex confirms a project-specific schedule with the quotation rather than publishing an unsupported universal promise.
The order can include drawing approval, material and process checkpoints, routine test records, third-party inspection and shipment documentation according to the agreed inspection plan.
Project-specific configurations may be available after technical review. Customization can include voltage ratio, impedance, losses, enclosure, cooling, accessories, monitoring and environmental requirements.
Support depends on the selected product and manufacturing route. Common project requirements include IEC 60076 and relevant ANSI/IEEE series. Compliance and certification must be confirmed for the specific quoted product.
Please provide product type, rated capacity, high- and low-voltage, frequency, phase, applicable standard, installation environment, quantity, accessories and destination. A data sheet or single-line diagram is preferred.
REQUEST A QUOTE
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