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Prefabricated-substation-YBW-40

Prefabricated substation YBW-40.5

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Description

 

Prefabricated substation YBW-40.5 is a high voltage switch equipment, power distribution transformer; the low voltage power distribution equipment according to user requirements, according to a line scheme by the factory, the outdoor type prefabricated forming complete set of equipment.

This series of prefabricated substation is a type of outdoor complete equipment with high voltage 40.5kV, low voltage 12kV (0.4kV), transformer capacity 800~20000kVA, frequency 50Hz and three-phase AC system, including 40.5kV main transformer box, 40.5kV switch box and 12kV (0.4kV) switch box. Boxes are connected with each other by cables, and 12kV (0.4kV) incoming and outgoing lines are all connected by cables. This substation is a new generation product to satisfy urban and rural power grids construction. It takes the role of receiving, converting and distributing electric energies, and features small volume, high completeness, easy installation, movability, low cost and safe operation.

Model description:

Prefabricated substation YBW-40.5-1

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Parameters

 

Specification of substation YBW-40.5:

  1. Rated voltage: 35 kV
  2. Maximum operating voltage: 40.5 kV
  3. Rated current: 630A, 1250A, 1600A
  4. Rated power frequency withstand voltage: 50kV
  5. Rated impulse withstand voltage (peak value): 125K
  6. Insulating medium: SF6 / air
  7. Protection class: lP4x

 

Main technical parameters:

Items Units High Voltage Unit Transformer Low Voltage Unit
40.5kV 12kV
JYN, XGN, KYN KYN28, XGN2, HXGN SZ11, S11, SC
Rated Voltage kV 40.5 12 35/10-04. 0.4
Rated Capacity kVA ≤20000
Mode of Wiring Y, d11
Insulation Grade Grade F
Insulation System Temperature Limit ℃ 155
Temperature Rise Limit K 100
Rated Current (Main) Loop A 400-1600 630-2000
Rated Short Circuit Breaking Current 25 31.5
Rated Short Circuit Making Current kA 63 80
4s Rated Short Time Withstand Current kA 25 31.5
Rated Peak Withstand Current kA 63 80
Power Frequency Withstand Voltage kV 95/118 42/48 85 2.0/2.5
Lightning Impulse Withstand Voltage kV 185/215 75/85 185 8
Acoustic Level dB ＜55
IP Code Front and four sides: IP43, ventilation part of top cover and bottom inside the box: ≥ IP23 (transformer placed in the open air: IP00)

 

Additional parameters:

Sequence number Project Name unit Electrical parameters
High pressure unit Rated frequency Hz 50
Rated voltage kV 12 24 40.5
Her mistress rated current line A 630 1250 1600
Rated short-term resistance current/time kA/s 20/4 25/3 31.5/4
Rated current peak tolerance kA 50 63 80
1 min industrial frequency tolerance voltage (of/fracture)) kV 32/36 42/48 95/115
Lightning shock resistance voltage (of/fracture) kV 60/70 75/85 185/215
Rated short circuit current breaking kA 20 25 31.5
Grounding the short circuit current/time tolerance kA/s 20/2 20/4
The loop current rated short circuit close kA 50 63 80
Rated active load current breaking A 630
Rated closed loop current breaking A 630
Rated charging cable breaking current A 10
Breaking the rated no-load transformer capacity kVA 1250
Transfer current rated A 1700
Mechanical life 次 3000 5000 10000
Low pressure unit Rated frequency Hz 50
Rated voltage kV 0.4/0.23
Insulation rated voltage V 690
Rated current of main loop A 100~3200
Rated current short-term tolerance kA/s 30/1 50/1 100/1
Rated current peak tolerance kA 63 105 176
5 s industrial frequency voltage tolerance kV 2.5
Lightning shock resistance voltage (of/fracture)) kV June 8
Transformer unit type oil-immersed dry
Rated frequency Hz 50
Rated voltage kV 12(7.2)/0.4(0.23)
Rated capacity kVA 30~1600
1 min industrial frequency voltage tolerance kV 35(25) 28(20)
Lightning shock resistance voltage kV 75(60)
Impedance voltage % 4 6
Points meet range ±x2.5% ±x5%
Connection group Y，yn0 D,yn11
cabinet High and low voltage protection class room IP33D
Transformer protection class room IP23D
Come to the level (oil-immersed/dry) dB ≤50/55
The secondary circuit voltage level kV 1.5/2

 

Working conditions:

  1. Altitude: ≤1000m (using plateau type design if >1000m)
  2. Ambient temperature: -25℃ ~ +40℃
  3. Wind speed: ≤34m/s (wind pressure ≤700pa)
  4. Icing thickness: ≤20mm
  5. Pollution grade: Ⅱ, Ⅲ
  6. IP code: IP23
  7. Relative humidity: ≤85%
  8. Natural ventilation area: 5m2
  9. Installation site: no fire, explosion, severe pollution, chemical corrosion or severe vibration, and gradient: ≤5°
  10. Normal use on ground, or on the buildings that has less than 10m of height and can bear 60 tons of pressure.
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Solutions

 

Application:

This series Prefabricated substation YBW-40.5 suitable for 40.5 kV power supply and the ring network terminal power supply system of city, high buildings, residential area, mines, the subway, dock, hotels, malls, parks, station, school, hospital, oil field, airports, ports and temporary power supply facilities, such as wind power system of power grid connection, road lighting power supply, etc.

 

Purchase tips (order list) of the substation YBW-40.5:

1. High voltage

Way of incoming line: terminal type, looped network type or double power in.

With the high-pressure measurement or not. The position of the measurement (front of the switch or behind the switch), the requirement of the meter gauge and its supplier.

Type of the HV switch, one way is using the high voltage vacuum load switch and the fuse-combination unit, which is the mainly used, and its price is more economical; the other is adopting the disconnector switch and the vacuum breaker, which is used in the high capacity transformer with higher price.

2. Transformer

The transformer type, serial number, the connection symbol group, capacity and the impedance voltage of the transformer.

3. Low voltage

Grade of the switch (Supplier).

The number of the outlet and the rated current value of every outlet switch.

With the compensation or not, and the capacity of the compensation.

With the measurement or not and the position.

4. Type of the busbar (copper or aluminum)

5, Layout of the transformer substation (with the operation corridor or not)

6. The material of transformer shell: composite board (commonly used), steel plate, stainless board or cement.

7. Delivery Period for prefabricated substation

METTZ Group stands as a consortium of Chinese electrical firms, renowned for its expertise in manufacturing electrical equipment. We are specialized in crafting a comprehensive suite of transmission and distribution equipment, covering a wide voltage range from 0.4 to 40.5 kV. Our commitment lies in delivering reliable and stable products to our clientele, encompassing vacuum circuit breakers (VCB), gas-insulated switchgear modular units (RMU), solid insulated switchgear (SIS) panels, air insulated switchgear (AIS) panels, and dry compressed air insulated switchgear panels (DIS).

Since our inception, METTZ Group has been at the forefront of adopting international cutting-edge technologies and equipment. We pride ourselves on our extensive collaboration and dialogue with leading experts in the electrical technology sector, both within China and internationally. Our offerings are tailored to meet the specific needs of our clients, including Original Equipment Manufacturer (OEM) services, customization of products to unique parameters and dimensions, all in alignment with our customers’ specifications.

METTZ Group is dedicated to innovation, quality, and customer satisfaction, ensuring that we remain a preferred partner for electrical equipment solutions worldwide.

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