China YB□-12 Prefabricated Transformer Substation - 50-1600kVA Power Distribution Solutions from Reliable Suppliers & Factory
Type Designation

| 1 | Prefabricated Substation |
| 2 | Structural Feature: P-Triangular Layout; M- Rectangular Layout |
| 3 | Design Serial Number |
| 4 | Rated Voltage on High-Voltage Side (kV) |
| 5 | Rated Voltage on Low-Voltage Side (kV) |
| 6 | Rated Capacity of Transformer (kVA) |
Operating Conditions
- ①Altitude: ≤ 1000m
- ②Environmental temperature: -25℃ ~ +40℃, (highest monthly average temperature +30℃, highest annual average temperature +20℃)
- ③Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%
- ④Seismic horizontal: horizontal acceleration of 0.4m/s², vertical acceleration of 0.15m/s²
- ⑤The installation location has no severe impact, no serious pollution or chemical corrosion, and no conductive dust explosion hazard in Egypt
📌 Note: If ordering this product exceeds the above conditions, please consult with our company.
Product Display
Technical Parameters
| No. | Name | Unit | High-Voltage Equipment | Transformer | Low-Voltage Equipment |
| 1 | Rated Voltage | kV | 6/10 | 60/0.4 10/0.4 | 0.4 |
| 2 | Rated Capacity | kVA | 50~1600 | ||
| 3 | Rated Current | A | 200, 400, 630 | 100~3200 | |
| 4 | Rated Short-Circuit Breaking Current | A | Load switch: 400-600 | 15~63kA | |
| kA | Composite switch: Depends on fuse | ||||
| 5 | Rated Short-Time Withstand Current | kA | 16, 20 (4S) | 15 (1s) | |
| 30 (1s) | |||||
| 6 | Rated Peak Withstand Current | kA | 31.5, 50 | 30 | |
| 63 | |||||
| 7 | Power-Frequency Withstand Voltage (1min) | kV | Relative-to-ground & phase-to-phase: 32/42 | 25/35 (oil immersed) | ≤0.3, 2 |
| Isolation gap: 36/48 | 20/28 (dry type) | >0.3, 2.5 | |||
| 8 | Lightning Impulse Withstand Voltage (Peak) 0.88 | kV | Relative-to-ground & phase-to-phase: 60/75 | 60/75 | |
| Isolation gap: 70/85 | |||||
| 9 | Enclosure Protection Level | ||||
| 10 | Noise Level | dB | IP23 | ||
| 11 | Applicable Standards | GT/T 17467 "Prefabricated High/Low-Voltage Substations" | 55 | ||
| DL/T 537 "Technical Conditions for Ordering 6-35kV Box type Substations" | |||||
| ⚠️ Note: For transformers with a capacity below 200kVA, items 5 & 6 are not required. | |||||
Installation Dimensions Diagram

- 1. Roof
- 2. Louvered Vent
- 3. External Metering Box
- 4. Lifting Ring
- 5. Channel Steel Base Frame
- 6. Door
- 7. Strip Brick / Brick-Pattern Cladding
- 8. Concrete Foundation
- 9. Foundation Ventilation Opening
📌 Note: A and B are the external dimensions of the substation base.
Ordering Notice
Product operating site and special requirements:
- 1 Provide product ordering drawings, which should include wiring diagrams and indicate transformer capacity, main component model specifications, distribution branch circuits, and capacity.
- 2 When it is necessary to configure electric energy metering and reactive power automatic compensation devices, the requirements for the configuration of the metering meter and transformer should be provided, and the capacity of the compensation capacitor should be indicated.
- 3 Specify the requirements for surface treatment of the product.
Frequently Asked Questions
Q What is a YB-type prefabricated transformer substation?
A YB-type prefabricated transformer substation is a compact, factory-assembled power distribution unit that integrates high-voltage switchgear, a transformer, and low-voltage distribution equipment within a single enclosure. It is designed for easy installation and reliable power supply in various applications.
Q What are the available layout types for the YB prefabricated substation?
The YB prefabricated substation is available in two structural layout types: P (Triangular Layout) and M (Rectangular Layout), allowing flexibility to suit different installation site requirements.
Q What is the rated transformer capacity range for this substation?
The rated transformer capacity ranges from 50 kVA to 1600 kVA, making it suitable for a wide range of power distribution needs from small commercial facilities to larger industrial projects.
Q What are the operating altitude and temperature requirements?
The YB prefabricated substation is designed for altitudes up to 1000m and can operate in environmental temperatures ranging from -25℃ to +40℃. If your installation site exceeds these conditions, please consult with our company for customized solutions.
Q What information is required when placing an order?
When ordering, please provide: product ordering drawings with wiring diagrams, transformer capacity and main component model specifications, distribution branch circuits and capacity, requirements for electric energy metering and reactive power compensation devices, and surface treatment requirements.
Q What standards does the YB prefabricated substation comply with?
The YB prefabricated substation complies with GT/T 17467 "Prefabricated High/Low-Voltage Substations" and DL/T 537 "Technical Conditions for Ordering 6-35kV Box Type Substations", ensuring high quality and safety standards.







Claire
Mr.Fu

Claire









