Customizable HV Prefabricated Substation-12kV to 40.5kV

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	Customizable HV Prefabricated Substation-12kV to 40.5kV
Rated voltage	40.5kV
Rated normal current	< 1250A
Rated frequency	50/60Hz
Rated capacity	1250 - 20000kVA
Series	YB

Description

YB series Prefabricated Substation is a complete set of power equipment that integrates MV switchgear, transformer and LV distribution devices with standard wiring layout. This HV Prefabricated Substation is applicable for residential communities, hotels, large construction sites and high-rise buildings. The Prefabricated Substation adapts to rated voltage 12kV / 24kV / 36kV / 40.5kV, 50Hz frequency and capacity up to 2500kVA, serving as ideal power transformation and distribution solution for various projects.

Main Designation Characteristics

The shell of the HV Prefabricated Substation adopts international advanced design and practical structure. Multiple shell materials are optional for the Prefabricated Substation, including aluminum alloy, steel composite plate, stainless steel and non-metallic glass fiber material.
The high voltage side of the HV Prefabricated Substation is equipped with load break switch or vacuum circuit breaker. The supporting transformer for the Prefabricated Substation can be hermetically-sealed oil type or dry type.
The box body of the Prefabricated Substation adopts double-layer structure with foam filling inside for heat insulation. Independent compartment layout is applied to HV and LV rooms. The transformer room of the HV Prefabricated Substation is fitted with automatic temperature controller, heater and cooling device.
Customized design and special specifications are available for the Prefabricated Substation as per customer requirements.

Service Environment

Ambient temperature: Max +40℃, Min -25℃
Relative humidity: Monthly average ≤95%, Daily average ≤90%
Operating altitude: Up to 2500m
Installation atmosphere: No obvious corrosive, flammable gas and vapor
No frequent severe vibration and impact

Main technical specifications:

12/24/36kV

Name	Unit	HV equipment	Transformer	LV Equipment
Rated voltage	kV	12/24/36	(12/24/36)/0.4	0.4
Rated current	A	630	3/75-150/3750	Less than 4000
Frequency	Hz	50
Rated Capacity	kVA	50-2500
Pfr withstand	kV	42/50/70/9		2.5
BIL	kV	75/125/170/185		—
Crust Protection Grade		IP23	Oil type 55; dry type 65	IP23
Appearance Dimensions	mm	According to primacy wiring circuit schema	According to primacy wiring circuit schema	According to primacy wiring circuit schema

Internal Physical Diagram of YB Prefabricated Substation

Prefabricated Substation(US-style, EU-style)12kV 24kV 36kV 40.5kV

40.5kV

Name	Unit	HV equipment	Transformer	LV Equipment
Rated voltage	kV	40.5	40.5/12/0.69/0.4	12/6.3/0.69/0.4
Rated current	A	Less than 1250		Less than 4000
Frequency	Hz	50
Rated Capacity	kVA	1250-20000
Pfr withstand	kV	70/95		42/2.5(Auxiliary)
BIL	kV	170/185		75
Crust Protection Grade	—	IP23	Oil type 55; dry type 65	IP23
Appearance Dimensions	mm	According to primacy wiring circuit schema	According to primacy wiring circuit schema	According to primacy wiring circuit schema

Internal Physical Diagram of YB 40.5kV Prefabricated Substation

Prefabricated Substation(US-style, EU-style)12kV 24kV 36kV 40.5kV

Application Scenarios

This YB series HV Prefabricated Substation and Prefabricated Substation are widely used in urban residential districts, commercial hotels, high-rise buildings, industrial parks, construction sites, urban grid renovation and new energy power distribution projects, providing safe, compact and reliable power supply for civil and industrial power systems.

Main Primacy Wiring Circuit Schemas for Substation(40.5kV):

Wiring type A-40.5kV:

12kV 24kV 36kV 40.5kV Prefabricated Substation(US-style, EU-style).png

Wiring type B-40.5kV:

12kV 24kV 36kV 40.5kV Prefabricated Substation(US-style, EU-style).png

Note: we offer special customized products according to client’s requirement.

Wiring type C-40.5kV:

12kV 24kV 36kV 40.5kV Prefabricated Substation(US-style, EU-style).png

Wiring type D-40.5kV:

12kV 24kV 36kV 40.5kV Prefabricated Substation(US-style, EU-style).png

Note: we offer special customized products according to client's requirement.

Certifications Prefabricated Substation

Negotiable

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Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.