Overview
Hengfengyou offers a wide variety of unit substation designs to meet customer requirements. A unit substation consists of one transformerelectrically connected to and coordinated in design with one or more switchgear or switchboard assemblies. A secondary unit substation is defined as a unit substation whose outgoing section is rated below 1000 volts.

A Typical Secondary Unit Substation Consists Of Three Sections:
Primary: an incoming section that accepts incoming high voltage (2400 to 13,800 volts) line
Transformer: section that transforms incoming voltage down to utilization Voltage (600 volts or less
Secondary: an outgoing section that distributes power to outgoing feeders and provides protection for these Feeders (600 volts and less)

Standard Secondary Unit Substations Consist Of
Medium Voltage Primary
Transformer
Low Voltage Secondary

Hengfengyou also offers low voltage unit substations with
Low Voltage Primary
Transformer
Low Voltage Secondary

The primary reason for using a secondary unit substation is to bring power as close as possible to the center of the loads. Another reason is that it provides a system design concept incorporating a wide variety of components that permits tailoring equipment to the needs of the application.

A secondary unit substation provides:

Reduced power losses
Better voltage regulation
Improved service continuity
Increased functional flexibility
Lower installation cost
Efficient space utilization

Every component and assembly of secondary unit substations are designed and engineered as an integral part of a complete system.

UNIT SUBSTATION LIGHTING PANEL
Lighting control system are widely use on both indoor and outdoor lighting of commercial, industrial and residential spaces lighting control system serve to provide the right amount of light where and when it is needed lighting control systems are employed to maximize the energy saving form the lighting system. This may include digital timers and photocell that are hardwired to control fixed group of lights independently.

About us

Qingdao Hengfengyou Electrical Engineering Co. , Ltd. is one of the large-scale electric complete

sets of manufacturers in China, specializing in oil-immersed transformers, dry-type transformers,

high-voltage Cabinets, low-voltage cabinets and substation manufacturing specialized electrical

enterprises. The company is located in the beautiful coastal city of china-qingdao. The company

has a registered capital of 10 million yuan, 20 senior technical personnel, more than 500 employees,

and a sound sales and service system, annual output value of US $1 billion, the products sell well

at home and abroad.