Prefabricated Distribution Compact Substation

Prefabricated Distribution Compact Substation

Prefabricated distribution compact substation European Union or American style. 12kV, 15kV, 24kV, 36kV are all available.

LV equipped with HV RMU can be optionally installed together with reactive power compensator or harmonic filter.

Smart box type substation:

Prefabricated box-type substation is one of the most economical, convenient, effective and latest power distribution equipment. Assemble 12kV (15kV, 24kV, 36kV optional) high-voltage switchgear; transformer and low-voltage switchgear are together, and are movable, assembled in the factory.

Prefabricated box-type substations (hereinafter referred to as box substations) have many advantages, such as: complete sets, small size, small footprint, access to the load center, improved power quality, reduced circuit loss, shortened power supply time, flexible location, adaptable to installation, It has the advantages of convenient assembly, reliable operation, low investment and quick results. It is widely used in urban power distribution, high-rise buildings, residential areas, parks and highways, as well as oil fields, industrial and mining enterprises, and temporary construction areas. Products comply with GB/T17467-1998 <, DL/T537-1993 <<6-35KV box substation ordering technical standards>> and other standards.

In China, European style box type substations are commonly used, with three parts each consisting of one room, forming a "mu" or "pin" structure. Commonly used models include ZBW and XWB. The high voltage chamber of the European style box transformer is a ring network, double line or terminal unit load switch, with a small volume and compatibility with the ring network cabinet. Adopting a safe and reliable compact design, with comprehensive anti misoperation interlocking function, high reliability, and convenient operation and maintenance. High voltage equipment generally adopts a combination of load switch and fuse. The fuse is equipped with an impactor. After the fuse is blown, the striker will push the release mechanism, and the load switch three-phase will jump open at the same time to avoid phase loss operation. At the same time, if an electric operating mechanism is used, distribution automation function can be implemented. The 10kV cable outlet of the ring network structure is equipped with a ground fault indicator and zero sequence sensor. Transformers can be oil immersed or dry type, with D, yn11 wiring. Considering unfavorable heat dissipation, natural ventilation or top forced ventilation can be used. The low-voltage room is equipped with metering and reactive power compensation, and the secondary circuit and number of outgoing lines can be designed according to user needs to meet different needs. The outer shell is made of steel plate or alloy plate, with a double-layer top cover and good insulation. The appearance and color can be coordinated with the environment. The high-voltage chamber, transformer chamber, and low-voltage chamber are separated into independent compartments by partitions. For monitoring and maintenance, lighting devices are installed in each compartment, and the lighting switch is controlled by the door

Operation of Box Substation

1. The box type substation should be placed at a relatively high place, not in low-lying areas, to prevent rainwater from entering the box and affecting equipment operation. When pouring concrete platforms, gaps should be left on the high and low voltage sides to facilitate the laying of cables in and out. When excavating the foundation, if encountering the ground formed by the accumulation of garbage or corrosive soil, it must be excavated to solid soil, then backfilled with good soil quality and compacted, and then filled with three layers of soil or gravel to ensure the stability of the foundation.

2. The grounding and neutral connection of the box type substation share a common grounding network. The grounding grid generally adopts the method of driving grounding piles at the four corners of the foundation, and then connecting them as a whole. There must be two reliable connections between the box type substation and the grounding grid. After operation, the grounding connection should be checked regularly to ensure it is not loose or corroded. Regularly measure the grounding resistance, not exceeding 4 Ω.

3. The box type substation mainly adopts natural air circulation cooling. Therefore, debris should not be piled up around it, especially the transformer room door. Louver ventilation holes should also be regularly removed to ensure that the equipment does not exceed the maximum allowable temperature.

After the low-voltage circuit breaker trips, the cause should be identified before power can be transmitted to prevent the accident from expanding.

5. The high-voltage chamber of the box type substation should be equipped with zinc oxide lightning arresters, and the installation method should be convenient for testing and replacement.

6. Equipment such as ring network switches, transformers, lightning arresters, etc. in the high-voltage room should be regularly inspected and maintained, defects should be discovered and dealt with in a timely manner, and insulation preventive tests should be conducted regularly. If it is discontinued for more than 3 months and is put into operation again, a full project preventive test should be conducted.

7. To replace a high-voltage fuse without breaking capacity, the transformer must be powered off, and the mechanical interlock must be properly released during operation, and an insulated operating rod must be used.

8. All incoming and outgoing cable holes of the box type substation should be sealed to prevent small animals from entering and causing accidents.

9. Must have a warning sign of "high voltage danger" and a nameplate number for electrical equipment

Configuration of high-voltage side of box transformer

(1) The box transformer is divided into terminal type and ring network type based on the primary wiring method on the high-voltage side. The terminal type box transformer does not need to consider additional wiring: if the high-voltage side is one in multiple out or multiple in one out (mostly one in two out or three out, or two in one out or two out), it can be considered as a ring network type box transformer.

(2) European style box transformers have circuit breaker configurations on the high-voltage side, as well as load switch fuse combination protection. Considering the cost of box transformers, for box transformers with a capacity not exceeding 800 kV · A and low requirements for high-voltage side protection configuration, the latter is often used.

(3) The high-voltage load switches configured in European style box transformers are mostly FLN-12 sulfur hexafluoride load switches.

(4) The rated current of the high-voltage fuse melt for protection is selected according to the following formula:

Irr=KIgmax

In the formula, Irr - rated current of the melt, A; K - coefficient, generally taken as 1.3:

Igmax - Rated current on the high-voltage side of the transformer.

(5) Considering the safety of operation and maintenance, the high-voltage side configuration of European style box transformers should meet the following requirements.

① When the load switch is disconnected, there is a grounding device to ensure maintenance safety.

② The load switch and isolation switch ensure mutual locking to ensure safe operation.

Environmental conditions:

Altitude: 1000m and below.
Ambient temperature: - 25 ~ +40 C.

Wind speed: no more than 35m/s.
Arelative humidity: no more than 90% (+25 C).
Seismic horizontal acceleration: no more than 0.4m/s, vertical acceleration: not greater than 0.2m/s.
Place of use: there should be no conductive, dusty, hazardous, corrosive, inflammable and explosive materials harmful to metals and insulators.

Features:

1) Smaller occupied area
2) Firm and reliable
3) Easy to move, beautiful and practical
4) Its cost is low, and the installation period is short

Main technical specifications:

About us:

Henan Fengyuan Power Technology Co., Ltd. was established in 2010 with a registered capital of 20 million yuan, fixed assets of 50 million yuan, more than 200 employees, and an annual output value of nearly 100 million yuan. It is a professional manufacturer of oil-immersed transformers, dry-type transformers, high and low voltage switchgear sets, box-type compact substations, and vacuum circuit breakers.

Our products have passed the qualification test of product quality management system ISO9001, environmental management system ISO14001, occupational health and safety management system OHSAS18001 and the National Quality Supervision and Inspection Center. We have patents and have CCC certification.

Welcome your arrival and instructions, all employees of Power Technology are waiting for your visit.

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Our service:

1. We are factory, "safety first, quality-oriented, customer first" is our aim, we strive to establish good reputation and provide integrity services. Trust we can be your quality supplier.

2. Interested parties please contact us. We are online for 24 hours.

FAQ

Q5 : Is OEM/ODM available?

A: Yes, it is! Our products can be Customized. We have design and engineer teams,we can customize products according to customers' drawing or requirements.

Q6 : You are manufacturer or trading company?
A: We are factory, As a 100% professional manufacturer with 20 year's manufacturer experience, we could produce products according to customers' requirements and we could also control the quality of products 100%.

Q7 : Can the price be negotiated?

A: Yes, the price is negotiable. It can be changed according to your quantity or package

Q8 : How about inspection?

A: We have the whole inspection system from raw material to end products include temperature rise test,salt spraying test conductor type test,mechanical life test.

Q9 : What is payment terms?

A: T.T, Paypal,Western Union,Alibaba trade assurance and L/C is acceptable. 30% T/T in advance ,70% balance before shipment.

Q10 : What is the service offered by company?

A: We have the professional engineer team which can design and develop the mold to arrive different customer requirement.

We also have the sales team to offer good service from pre-sale to after-sale.

This product is usually customized.

We are a manufacturer and have a professional technical department that can design and provide solutions according to customer needs.

Please contact our sales personnel to obtain design drawings

Here are our customer examples for your reference

Afghan clients

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