Transformer Substations

Our prefabricated substations are industrially assembled in our professional workshop, and the assembled products are delivered directly to customers so that they can be put into use immediately after delivery. The prefabricated substation includes: Substation shell: foundation (transformer box,...

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Description

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.

The prefabricated substation includes:

Substation shell: foundation (transformer box, cable bushing, pressure relief) wall, passage, door, roof

Medium voltage switchgear;

One or more distribution transformers;

Low-voltage equipment.

Scope of application:

Prefabricated substation units, using concrete or metal shells, are used in cable distribution networks, urban or rural areas, public or industrial areas, construction sites, agricultural irrigation, etc.

In recent years, prefabricated substations have been increasingly used in alternative energy production

Such as based on solar energy, wind energy, biofuels, biomass, geothermal, tidal energy, etc.

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

Transformer substations parameter:

Transformer Substations

PRODUCT PHOTO

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Compact Box Type Prefabricated Combined Substation

Certifications:

Transformer Substations Factory

Transformer Substations Price

FACTORY WORKSHOP

production line1

COMPANY OVERIVEW

baozhuang_

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

TECHNICAL REQUIREMENTS AND CHARACTERISTICS OF EQUIPMENT
Re:82 sets compact substation
Item- No.	Schedule of Technical Data	Unit	Required (at 3000 m	Offered Data
Item- No.	System Data Requirements	Unit	Required (at 3000 m	Offered Data
1.05.10	Stranded copper conductor for earthing
	Manufacturer	-
	Material	-	copper
	Cross-section	mm2	>50
	Length	m	>40

1.05.11	Earthing rods
	Manufacturer	-
	Type	-
	Materia!	-
	Length	m
	Sections per rod	pcs

1.6	Compact Substations (Option 1)
	Manufacturer	-		fengyuan
	Type	-		OutDoor
	Overall protection class for complete substation	-	IP 44	IP 44
	Material of enclosure	-		GI
	Overall dimensions (W x L x H)
	for S/S with 1x50 kVA transformer	mm/mm/mm		3000x1850x2150
	■ for S/S with 1x100 kVA transformer	mm/mm/mm		3000x1850x2150
	for S/S with 1x160 kVA transformer	mm/mm/mm		3000x1850x2150
	• for S/S with 1x250 kVA transformer	mm/mm/mm		3000x1850x2150
	Overall weight
	■ for S/S with 1x50 kVA transformer	kg		1000kg.
	■ for S/S with 1x100 kVA transformer	kg		1000kg.
	■ for S/S with 1x160 kVA transformer	kg		1000kg.
	■ for S/S with 1x250 kVA transformer	kg		1000kg.

1.6.1	20 kV Switchgear equipment
	Manufacturer	-		Chnt / Equivalent
	Type	-		Indoor RMU
	Rated voltage	kV	20	20
	Maximum operating voltage	kV	24	24
	Rated current	A	400	400
	Rated short time current	kA	16	16
	Rated power frequency withstand voltage	kV	50	50
	Rated impulse withstand voltage (peak value)	k-^peak	125	125
	Insulating medium		SF6/air	SF6/air
	Protection class		lP4x	lP4x