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Prefabricated-substation-YBW-24

Prefabricated substation YBW-24

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Description

 

Prefabricated substation YBW-24 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.

High voltage switch equipment can choose: ait-insulated or gas-insulated ABB, SIEMENS, METTZ switchgear or MFN type load switch cabinet, can be a terminal or ring network power supply unit.

Transformer can choose SC9 type dry type transformer or S9 oil-immersed transformer, low voltage distribution device adopts imported or domestic famous quality low pressure switch, circuit breakers, ac contactor, each independent units installed perfect control, protection, charged display and stood with lighting system. The cabinet can be installed temperature, humidity automatic control device and forced ventilation system.

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Parameters

 

Specification of substation YBW-24:

  1. Rated voltage: 20kV
  2. Maximum operating voltage: 24kV
  3. Rated current: 400A
  4. Rated short time current: 16kA
  5. Rated power frequency withstand voltage: 50kV
  6. Rated impulse withstand voltage (peak value): 125K
  7. Insulating medium: SF6 / air
  8. Protection class: lP4x

 

Main technical parameters:

Sequence numberProject NameunitElectrical parameters
High pressure unitRated frequencyHz50
Rated voltagekV122440.5
Her mistress rated current lineA630 1250 1600
Rated short-term resistance current/timekA/s20/4 25/3 31.5/4
Rated current peak tolerancekA50 63 80
1 min industrial frequency tolerance voltage (of/fracture))kV32/3642/4895/115
Lightning shock resistance voltage (of/fracture)kV60/7075/85185/215
Rated short circuit current breakingkA20 25 31.5
Grounding the short circuit current/time tolerancekA/s20/2 20/4
The loop current rated short circuit closekA50 63 80
Rated active load current breakingA630
Rated closed loop current breakingA630
Rated charging cable breaking currentA10
Breaking the rated no-load transformer capacitykVA1250
Transfer current ratedA1700
Mechanical life次3000500010000
Low pressure unitRated frequencyHz50
Rated voltagekV0.4/0.23
Insulation rated voltageV690
Rated current of main loopA100~3200
Rated current short-term tolerancekA/s30/1 50/1 100/1
Rated current peak tolerancekA63 105 176
5 s industrial frequency voltage tolerancekV2.5
Lightning shock resistance voltage (of/fracture))kVJune 8
Transformer unittypeoil-immerseddry
Rated frequencyHz50
Rated voltagekV12(7.2)/0.4(0.23)
Rated capacitykVA30~1600
1 min industrial frequency voltage tolerancekV35(25)28(20)
Lightning shock resistance voltagekV75(60)
Impedance voltage%4 6
Points meet range±x2.5% ±x5%
Connection groupY，yn0 D,yn11
cabinetHigh and low voltage protection class roomIP33D
Transformer protection class roomIP23D
Come to the level (oil-immersed/dry)dB≤50/55
The secondary circuit voltage levelkV1.5/2

 

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 of pre-installed substation suitable for 12 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-12:

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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