YB(W) - 12/0.4 Outdoor Prefabricated Substation of Non-metallic Series

YB(W)-12/0.4 box type transformer substation is the compact distributing equipment comprising high voltage switchgear, distributing transformer,low voltage distributing equipment and electric energy measurement equipment,etc,which are arranged into an organic whole according to the certain circuit scheme. This equipment is the complete transformer substation used for receiving and distributing electric energy at threephase Ac system of rated voltage 10/0.4kV in the following fields such as urban public distributing, tall building, residual area, industrial and mining enterprise，oil fields, temporary construction for project. Lt’s technical performance completely meets the requirements stipulated in the standards ZBK 4001-89 and SD 320-89.

product details

Product introduction

The name "12/0.4" provides insight into the transformation ratio, where 12 kV represents the high voltage side and 0.4 kV represents the low voltage side. Additionally, the "W" designation may indicate that it is a weatherproof or outdoor-rated device, ensuring its reliability and functionality in outdoor environments.

One of the main features of this substation is its non-metallic construction. Unlike traditional metal casings, the casing of the substation is made of non-metallic materials. This design offers several advantages, including corrosion resistance, light weight, and cost-effectiveness. The use of non-metallic materials increases the durability and lifespan of the substation, making it a reliable choice for outdoor applications.

YB(W)-12/0.4 outdoor box-type substation is specially designed to meet the needs of modern power distribution systems. Its efficient transformation ratio and non-metallic construction make it a valuable asset for utility companies, industrial facilities and infrastructure projects. By providing reliable, durable high-voltage power step-down solutions, substations help distribute power efficiently and safely to end users.

Basic technical parmeters

Item	On the sidle of high voltage	Transformer	On the side of low voltage
Rated working capability		50-1250kvA
Rated working voltage	10kV	10/0.4 kV	0.4 kV
Rated working current	400-630A		630-2500A
Rated short-circuit breaking current	50kA		25-4kA
Rated marking current	40kA
Rated thermal stable current (effective value)	16kA/2S		15、30kA/1S
1 min power frequency withstand voltage	To earth 42kV	Dry type 28kV	2.0kv,2.5kV
1 min power frequency withstand voltage	Between open contacts 48kV	Oil immersed 35kV
Lightning impulse withstand voltage	To earth 75kV	75kV
Lightning impulse withstand voltage	Between open contacts 85kV
Protection level	IP3X	IP2X	IP3X
Noise	Oil immersed transformer55dB
Noise	Dry type transformer 65dB