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YBD 1000 KVA 12 KV 400 V Power Transmission Box-Type Underground Transformer Unit Substation

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The YBD Series Underground Combined Substation is developed by our company to meet urban construction and environmental protection needs. This integrated device combines high-voltage switchgear, underground transformers, and low-voltage distribution cabinets into a compact, efficient power distribution unit, ideal for use in urban public spaces, streets, parks, residential areas, and scenic districts. It is suitable for power reception and distribution in ring main systems, dual power supply systems, or radial terminal distribution systems.
  • YBD-12/0.4-1000

  • SHENGTE

Availability:
Quantity:

Features:

1. It is developed and designed based on the unit substation transformer, with a compact structure, small floor area, attractive appearance, low noise, energy-saving and environmentally friendly design, safe and reliable operation, and convenient maintenance.

2. It adopts advanced technology to improve and optimize functions, equipping the electrical substation transformer with automatic temperature control, automatic emergency drainage, automatic humidity control, and a remote monitoring system, ensuring reliable performance.

3. In the power distribution system, this distribution substation can be used for ring network power distribution, dual power supply, or radial terminal power distribution systems, providing flexible and efficient power distribution equipment solutions.


Our Advantages:

  • Integrated Design: It merges high-voltage switchgear, underground distribution transformer, and low-voltage distribution cabinets. The result forms one compact and efficient transformer substations device.

  • Modular Structure: The setup splits into above-ground parts and underground parts. Above-ground parts include high-voltage switchgear, low-voltage distribution cabinets, and outer casing. Underground parts hold the buried substation transformer along with its enclosure. This split makes both installation and maintenance easier.

  • High-Voltage Unit: It relies on SF6 insulated ring main units or load switch cabinets. These units stay compact and need little upkeep. They work well for distribution substation applications.

  • Low-Voltage Unit: It uses GGD-type cabinets. You can add metering, measurement, and automatic capacitance compensation devices whenever needed. This supports full power distribution equipment integration.

  • Transformer Unit: It employs a low-temperature-rise, low-loss buried unit substation transformer. The unit features fully sealed and fully insulated connections. These features keep operation reliable even when the unit sits under water.

  • Casing Structure: The casing uses aluminum-zinc plated sheets together with a wood cover and a metallic glazed tile roof. A double-layer top cover improves ventilation and blocks heat radiation. The whole design fits modern transformer substations environments.

  • Aesthetic and Environmental: The look blends nicely with modern urban landscapes. Underground placement frees up surface space and cuts environmental impact. This makes it a practical distribution substation solution.

  • Safety and Reliability: It comes with fireproof, waterproof, and explosion-proof features. An advanced monitoring system runs alongside these features. Together they keep the electrical substation transformer running safely.

YBD-1

YBD-2YBD StructureYBD-3Model Description YBD

Main Part

Item

Unit

Parameter

High

Voltage

Unit

Rated Voltage

KV

12

Rated Frequency

Hz

50

Rated Current Of Main Bus

A

630

1mm Power Frequcency Withstand Volage Carth And Inter-Phase / Isolation Clearance

KV

42 / 48

Lightning Impulse To Earth And Phase To Phase Withstand / Isolation Clearance

KV

75 / 85

Rated Short-Time Withstand Current

KA/S

20 / 2

Rated Peak Withstand Current

KA

50

Rated Short-Time Making Current

KA

50

Rated Transfer Current

A

1400

Fuse Drop Out Current

KA

31.5 / 40

Low

Voltage

Unit

Rated Voltage

V

400

Main Circuit Rated Current

A

100 ~ 1200

Rated Limit Short-Circuit Breaking Capacity

KA

80

Rated Running Short-Circuit Breaking Capacity

KA

50 (65)

Rated Short-Time Withstand Current

KA/S

50 (65)

Branch Current, Compensating Capacity

--

As Per The Users' Requirements

Transformer

Unit

Rated Power

KVA

30 ~ 630

Impedance Votage

%

4 / 4.5

Tapping Range

%

±2 × 2.5% / ±5%

Vector Group

--

Yyn0 / Dyn11

Drawing YBD


Production Process


Production Process S11


Company Profile



Guangdong Shengte Electric Co., Ltd., based in Foshan, China, is a distinguished transformer manufacturer known for reliability and exceptional after-sales service. With over a decade of experience, we've provided high-quality, cost-efficient transformers for governmental and private sector projects worldwide, earning a reputation for excellence.

Our commitment to quality is demonstrated by meeting the rigorous standards of our German Power Utility clients, ensuring only the highest quality solutions.

Spanning 10,000 square meters, our Foshan facility is equipped with cutting-edge production and testing equipment, enabling us to offer customized solutions, including OEM and ODM services. Our product range includes oil-immersed transformers, resin cast dry-type transformers, pad mounted transformers, prefabricated substations, and more.

Certified by ILAC-MRA and CNAS, our IEC certificate underscores our dedication to international quality standards. Additionally, we hold ISO9001, CE, and Innovative Product Certifications, with active pursuit of the UL certificate to further demonstrate our commitment to global compliance.

Company

Factory


Certifications


Certification


Project Cases


Case

Customer


Exhibition


Exhibition


Packaging & Shipping


Packing & Delivery


FAQ


Q1: What is the difference between a substation transformer and a unit substation transformer?
A: A substation transformer usually means larger units. These serve in primary distribution or transmission substations. A unit substation transformer, by contrast, combines high-voltage switchgear, the transformer, and low-voltage distribution. It forms one compact modular unit. This setup suits urban or industrial use.


Q2: Can the YBD-1000 kVA distribution transformer support customized power distribution equipment configurations?
A: Yes, this distribution transformer allows custom options. You can pick various high-voltage switchgear types. Monitoring systems and protection devices can also be added. These choices help match project needs.


Q3: What applications are suitable for transformer substations like YBD-1000 kVA?
A: This transformer substation works well in urban streets. It also fits residential areas, commercial complexes, parks, and industrial parks. The unit delivers safe and reliable power distribution solutions while saving space.


Q4: How does an electrical substation transformer ensure safety and reliability?
A: The electrical substation transformer in YBD units uses a waterproof design. It also resists corrosion and dust. Smart monitoring can be added when needed. The modular structure keeps operations safe. It cuts maintenance needs and extends service life.


Q5: Is the YBD-1000 kVA unit substation transformer suitable for underground installation?
A: Yes, this unit substation transformer fits underground installation. It provides high protection levels. The compact modular design supports this use. The unit works well in cities where space is limited and looks matter.


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Guangdong Shengte Electric Co., Ltd. is located in Danzao Town, Nanhai District, Foshan City.

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