The YB12 Prefabricated Substation is a turnkey distribution solution featuring a factory-assembled, fully enclosed cubicle that houses transformers, switchgear, and protection devices. Designed for rapid deployment, it seamlessly integrates with ring main units or serves as a termination substation to deliver reliable power to urban infrastructures, industrial complexes, and remote sites.
Built to international and national standards, the YB12 substation ensures safe, weatherproof operation in diverse environments—from city streets and parks to oilfields and ports. Its compact, modular design reduces civil works, accelerates commissioning, and lowers lifecycle maintenance costs, making it a preferred choice for modern power distribution networks.
| Description | unit | HV electrical | Transformer | LV electrical |
| Rated Voltage | KV | 6-10. | 6/0.4 10/0.4 | 0.4 |
| Rated Capacity | KVA | 50-1600 | ||
| Rated current | A | 200,400,630 | 100-3200 | |
| Rated short-circuit breaking current |
A | 400-630 Load switch | 15-63kA | |
| KA | Combination switch depends on the fuse | |||
| Rated short-time withstand current |
KA | 16,20(4s) | 15(1s) | |
| 30(1s) | ||||
| Rated peak withstand current |
KA | 31.5,50 | 30 | |
| 63 | ||||
| Rated power frequency withstand voltage (1min) |
KV | 32/42 Between phases and earth | 25/35(0il) | ≤0.3,2 |
| 36/48 Across the isplating distance | 20/28(Dry) | >0.3,2.5 | ||
| Rated lighting impulse withstand voltage |
KV | 60/75 Between phases and earth | 60/75 | |
| 70/85 Across the isoating distance | ||||
| Degree of protection | IP33D | |||
| Noise level | db | 55 |
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