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1.YB□ High VoltageLow Voltage Prefabricated Substation.jpg

2.YB□ High VoltageLow Voltage Prefabricated Substation.jpg

3.YB□ High VoltageLow Voltage Prefabricated Substation.jpg

YB□ High Voltage/Low Voltage Prefabricated Substation from China Suppliers - Factory Integrated Power Distribution Solutions

The YB□ series prefabricated substation is your ideal solution for efficient power distribution in China. As a leading factory, we combine high-voltage equipment, transformers, and low-voltage panels into a single, compact enclosure. This innovative design is perfect for urban complexes, residential areas, industrial parks, and temporary sites, providing substantial space savings while ensuring reliable operation. With flexible configurations such as ring-main and dual power supply options, our substations meet the highest standards of safety and efficiency. As trusted suppliers, we adhere to GB/T 17467-2020, delivering mobile power distribution solutions tailored to your needs

Product Details

Product Model

Main Technical Parameters

Name	Unit	High-voltage Electrical Equipment	Transformer	Low-voltage Electrical Equipment
Rated Voltage	kV	10	10/0.4	0.4
Rated Current	A	630		100~2500
Rated Frequency	Hz	50	50	50
Rated Capacity	kVA		100~1250
Rated Thermal Stability Current	kA	20/4S		30/1S
Rated Dynamic Stability Current (Peak)	kA	50		63
Rated Closing Short-circuit Current (Peak)	kA	50		15~30
Rated Breaking Short-circuit Current	kA	31.5 (Fuse)
Rated Breaking Load Current	А	630
1min Power Frequency Withstand Voltage	kV	Phase-to-ground, Phase-to-phase 42, and Across-the-isolator 48	35/28 (5min)	2.0/2.5
Lightning Impulse Withstand Voltage	kV	Phase-to-ground, Phase-to-phase 75, and Across-the-isolator 85	75
Enclosure Protection Level		IP23	IP23	IP23
Noise Level	dB		Oil-immersed ≤55 Dry-type Transformer ≤65
Number of Circuits	piece	1~6	2	4~30
Maximum Reactive Power Compensation on Low Voltage Side	kvar			300

The Layout Form and External Dimensions

YB Prefabricated Substation Layout Form and External Dimensions - View 1

YB Prefabricated Substation Layout Form and External Dimensions - View 2

YB Prefabricated Substation Layout Form and External Dimensions - View 3

Frequently Asked Questions (FAQ)

QWhat is the rated voltage range of the YB High Voltage/Low Voltage Prefabricated Substation?

The high-voltage side operates at 10 kV, while the transformer steps it down to 10/0.4 kV, and the low-voltage side operates at 0.4 kV, making it suitable for standard medium-voltage distribution networks.
QWhat transformer capacity options are available for this prefabricated substation?

The transformer rated capacity ranges from 100 kVA to 1,250 kVA, supporting both oil-immersed and dry-type transformer configurations to meet various application requirements.
QWhat is the enclosure protection level of the YB Prefabricated Substation?

All three sections — high-voltage equipment, transformer, and low-voltage equipment — are protected to IP23 standard, providing protection against solid objects larger than 12.5mm and against water spray at an angle up to 60° from vertical.
QHow many output circuits does the low-voltage side support?

The low-voltage electrical equipment supports between 4 and 30 output circuits, offering flexible configuration for various distribution needs in commercial, industrial, and residential projects.
QDoes the YB Prefabricated Substation support reactive power compensation?

Yes. The low-voltage side supports a maximum reactive power compensation of up to 300 kvar, helping to improve power factor and reduce energy losses in the distribution system.
QWhat are the lightning impulse withstand voltage ratings for the high-voltage section?

The high-voltage equipment is rated at 75 kV for phase-to-ground and phase-to-phase lightning impulse withstand voltage, and 85 kV across the isolator, ensuring reliable performance during transient overvoltage events.