The YB□-12/0.4 pre-installed substation

The YB□-12/0.4 pre-installed substation, also known as a high-voltage/low-voltage prefabricated substation or European-style substation, is an integrated movable power distribution unit. It is composed of high-voltage and low-voltage switchgear, transformers, and an outer casing, pre-assembled in a factory. This type of substation is designed to replace traditional civil-constructed substations, providing the same power distribution functionalities.

Key features include:

Usability in both indoor and outdoor environments.
Applications across various sectors such as industrial parks, residential areas, commercial centers, public spaces, airports, ports, mining fields, oil fields, and temporary construction sites for receiving and distributing electrical power.
Standardized and customizable design in line with national grid requirements, ensuring safety, reliability, durability, uniformity, interchangeability, and scalability.

The design follows the technical specifications outlined by the State Grid Corporation of China for 10kV high-voltage/low-voltage prefabricated substations, ensuring that the product meets modern standards for a high-efficiency, reliable distribution network.

No.	Items	Unit	High-voltage switchgear	Transformer	Low-voltage switchgear
1	Rated capacity	kVA	-	400, 500, 630	-
2	Rated voltage	kV	12	-	0.4
3	Rated current	A	630	-	800~1250
4	Rated short-circuit breaking current	kA	20	-	50
5	1min power frequency withstand voltage	kV	Earth 42 Isolating distance 48	35	2.5
6	Lighting impulse withstand voltage	kV	Earth 75 Isolating distance 85	75	-
7	Enclosure protection level		Enclosure IP33D, Inner compartment IP2XC
8	Noise level	dB	≤55
9	Enclosure level		10
10	Internal arc level		IAC-AB 20kA 0.5s
11	Overall dimensions	mm	3600×2200×2500 (L×W×H)