YBM20 European-Style Box-type Transformer Substation
This series of prefabricated compact substations features an integrated design for both high- and low-voltage systems, housing distinct compartments for high-voltage equipment, transformers, and low-voltage equipment. The unit is constructed upon a welded framework of high-quality channel and angle steel, with an enclosure that offers both exceptional mechanical strength and corrosion resistance. The product supports both natural ventilation and intelligent forced-air circulation systems, and can be equipped with a distribution network automation system to facilitate digital network management. Characterized by its compact structure and minimal footprint, it is ideally suited for deployment in modern, complex power grid environments—including those requiring unattended operation.
Description
Product Technical Advantages
1. Robust and Corrosion-Resistant Structure: The cabinet framework is constructed from high-quality channel steel and angle steel, welded together and combined with precision-bent high-grade steel plates; this design ensures high mechanical strength as well as excellent resistance to corrosion and vibration.
2. Three-Compartment Independent Isolation: The high-voltage compartment, transformer compartment, and low-voltage compartment feature a completely independent layout. Each compartment is equipped with an automatic lighting system that activates in tandem with the opening of the door, thereby ensuring safety during operation and maintenance.
3. Intelligent Temperature Control and Heat Dissipation: The transformer compartment integrates both natural ventilation and an automatically controlled forced-air cooling system. The exhaust system operates autonomously in response to temperature fluctuations, effectively regulating the internal temperature rise within the cabinet.
4. Digital Distribution Network Integration: Supports the expansion of distribution network automation capabilities and features GPRS or Ethernet data transmission functionality. It is perfectly adapted to facilitate “Four Remote” functions (telemetry, telecontrol, telesignaling, and teleadjusting) as well as the management of unmanned substations.
5. Flexible Spatial Configurations: The structural design offers a choice between “目”-shaped and “品”-shaped layouts. Optional features—such as anti-condensation devices and transformer rails—are available for customization, significantly enhancing the convenience of logistics, on-site installation, and equipment ingress/egress.
Technical Parameters
Product Model: YB20 Prefabricated Substation
| Item | Unit | Parameter |
| High Voltage Unit | ||
| Rated Frequency | Hz | 50 |
| Rated Voltage | kV | 6、10、35 |
| Maximum Operating Voltage | kV | 6.9、11.5、40.5 |
| Rated Current | A | 400、630、1250 |
| Rated Short-circuit Breaking Current (Current-limiting Fuse) | kA | 31.5 |
| Rated Voltage | kV | 6、10、35 |
|
Transformer Unit
|
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| Rated Capacity | kVA | 30~2000 |
| Tap Range | % | ±2×2.5%、±5% |
| Low Voltage Unit | ||
| Rated Voltage | kV | 220、380、690、1000 |
| Rated Current of Main Circuit | A | 50~4000 |
|
Enclosure
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| Branch Circuit Current | A | 5~800 |
| Protection Level (Conventional Products) | High Voltage Chamber IP33, Transformer Chamber IP23, Low Voltage Chamber IP33 | |
| Noise Level | dB | ≤50 |
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