Product details

overview

Widely used in urban power grid renovation, residential communities, high-rise buildings, industrial and mining areas, hotels, shopping malls, airports, railways, oil fields, docks, highways, and other indoor and temporary electrical facilities External field.

Function and characteristic

High voltage switchgear, transformers, and low-voltage switchgear are integrated into one, with strong completeness;

Complete high and low voltage protection, safe and reliable operation, and simple maintenance;

◇ Small footprint, low investment, short production cycle, and convenient mobility;

◇ Flexible and diverse wiring schemes:

Unique structure: The unique honeycomb structure double-layer (composite board) shell is firm, insulated, ventilated, beautiful, and has a high level of protection. The shell materials include stainless steel alloy, aluminum alloy, and cold-rolled plate. Color steel plate is optional;

◇ Diverse styles: universal, villa, compact, and other styles:

The high-voltage ring main unit can be equipped with a network automation terminal (FTU) to achieve reliable detection of short circuits and single-phase grounding faults, with the "four remote" function, which facilitates the upgrade of distribution network automation.

normal condition

◇ Altitude not exceeding 1000m;

◇ Environmental temperature: -25 ℃~+40 ℃;

Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;

Installation location: A place without fire, explosion hazards, conductive dust, corrosive chemical gases, and severe vibrations. If the above conditions are exceeded, users can negotiate with our company.

transformer

Intelligent integrated substations use low loss, oil immersed, fully sealed S9, S10, S11 series transformers, or environmentally friendly dry-type transformers with resin insulation or NOMEX paper insulation. The bottom can be equipped with a small car, and the transformer can be easily accessed.

High voltage side

Intelligent integrated substations generally use a combination of load switches and fuses for high voltage protection. After one phase of the fuse is blown, the three phases are interlocked and tripped. The load switch can be selected from compressed air and vacuum sulfur hexafluoride types, and can be equipped with an electric operating mechanism to achieve automation upgrade; The fuse is a high-voltage current limiting fuse with an impactor, which operates reliably and has a large breaking capacity. The main technical parameters are shown in the table below. For transformers above 800kVA, vacuum circuit breakers such as QCE4, QCE2, and QCE1 can be used for protection.

low-pressure side

The low-voltage side main switch adopts universal or intelligent circuit breakers for selective protection; The outgoing switch adopts a plastic shell switch with small volume, short arcing, and up to 30 circuits. The intelligent automatic tracking reactive power compensation device has two switching modes for users to choose from: contactor and non-contact.

Execution standards

This product meets the following standards:

GBT17467-1998 "High Voltage/Low Voltage Prefabricated Substations"

DL/T537-93 "Technical Conditions for Ordering 6-35kV Box type Substations"