China Pad mounted transformer manufacturer. YBM series pad mounted transformer is ANSI standard compact transformer substation which is manufactured by Rockwill Electric. Excellent cooling and drying system inside. High quality and low cost.
Pad Mounted Transformer
YB() American-pattern tank-type transformer, also called pad-mounted transformer, is a functional and energy saving combined transformer which integrates the high voltage device, low voltage device, transformer and other components. Its small but strong body and high efficiency make it suitable for outdoors and indoors usage.
The sealed tank is made from high quality stainless steel with special design which helps to protect the devices and reduce the heat inside. Excellent cooling and drying system.
Temperature control system and humidity control system are installed. When the temperature or humidity reaches certain levels, the systems automatically work to maintain the safe condition inside the tank.
It owns loop or dual power supply and terminal power supply two ways of power supply. Therefore, it can serve as a substation. Lower cost and higher efficiency.
It costs less than the traditional distribution house and only covers the area of about 3cbm.
Safety of Pad Mounted Transformer:
All the devices are isolated by thick steel board. The efficient insulation system helps to protect the people from electric accident. Easy installation and maintenance
The installation only requires connecting the cables. The fully sealed transformer design keeps the oil away from the air, so it is free of maintenance.
Working Conditions of Pad Mounted Transformer:
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Item
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Unit
|
Parameter
|
|
|
Rated Voltage Un
|
HV main loop
|
kV
|
12
|
|
LV main loop
|
0.4
|
||
|
Rated Thermal steady current
|
HV main loop
|
kA
|
16
|
|
LV main loop
|
As customer requirement
|
||
|
Rated dynamic steady current
|
HV main loop
|
kA
|
40
|
|
LV main loop
|
kA
|
As customer requirement
|
|
|
1minPower frequency withstanding voltage
|
HV switch loop
|
kV
|
42
|
|
LV main loop
|
kV
|
2.5
|
|
|
Assistant loop
|
kV
|
2
|
|
|
Lightening impulse withstanding voltage
|
kV
|
75
|
|
|
Backup-type fuse short circuit current
|
kV
|
40
|
|
|
Insert-type fuse short circuit current
|
kA
|
2.5
|
|
|
Sound level
|
dB
|
≤50
|
|
|
Protection level
|
|
IP33
|
|
StructureView
HV:1.Manometer; 2.Oil level gauge; 3.Air valve; 4.Oiling plug; 5.Fuse; 6.Thermometer; 7.Load switch operation indicator plate; 8.Load switch; 9.HV cable contactor; 10.Hanging; 11.Tap changer; 12.Earthing&earthing label;13.Dual-purpose valve; 14.HV cable bracket.
LV: 15.Measuring equipment; 16.LV branch; 17.Measurement lead sealing;18.Transformer oil tank.
General
YB() series products is a kind of set of equipment which assembles the MV switch apparatus, transformer, LV distribution equipment together according to fixed connection scheme. This series substation is suitable for neighborhood unit, hotel, large-scale work site and high building that the voltage is 12kV /24kV/36kV/40.5kV, the frequency is 50Hz and the capacity is under 2500kvA.
Service environment
a) Air temperature: Maximum temperature: +40℃; Minimum temperature:-25℃
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
Main technical specifications
| Name | Unit | HV equipment | Transformer | LV Equipment |
| Rated voltage | kV | 12/24/36 | (12/24/36)/0.4 | 0.4 |
| Rated current | A | 630 | 3/75-150/3750 | Less than 4000 |
| Frequency | Hz | 50 | ||
| Rated Capacity | kVA | 50-2500 | ||
| Pfr withstand | kV | 42/50/70/95 | 2.5 | |
| BIL | kV | 75/125/170/185 | ||
| Crust Protection Grade | IP23 | Oil type 55; dry type 65 | IP23 | |
| Noisy Grade | dB | |||
| Appearance Dimensions | mm | According to primacy wiring circuit schema | ||
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 |
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| HV Room | LV Room | Transformer Room | ||
Main Designation Characteristics
The crust of the substation is designed according to the foreign advanced technology and physical reality. We provide many kinds of crust material such as aluminum alloy steel composite stainless steel board and non metal material(glass fiber).
The HV side use charge switch or vacuum circuit breaker. The transformer could be oil type hermetically-sealed type and dry type.
The proof of the box is double layers structure and between the layers is filled with foam. There are independent boards in HV and LV room, and in the transformer room will install auto thermal controller heater and cooling equipment.
Note: we offer special customized products according to client’s requirement.
36kV/40.5kV Prefabricated Substation Characteristics
This type substations are the HV side 40.5 kV, LV side 0.4-12 kV and 3 phase outdoor completeequipment .It is wide used in cities , towns ,factories and oil fields, wharfs etc. It is also used insome construction sites. The characteristics are small volume, convenient installation, low cost,high automation safe and reliable operation. Substation is combined with HV switch room,LVswitch room, relay room and transformer room.
Main technical specifications for 36kV/40.5kV Prefabricated Substation
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Name
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Unit
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HV equipment
|
Transformer
|
LV Equipment
|
|
Rated voltage
|
kV
|
40.5
|
40.5/12/0.69/0.4
|
12/6.3/0.69/0.4
|
|
Rated current
|
A
|
Less than 1250
|
|
Less than 4000
|
|
Frequency
|
Hz
|
50
|
||
|
Rated Capacity
|
kVA
|
1250-20000
|
||
|
Pfr withstand
|
kV
|
70/95
|
42/2.5(Auxiliary)
|
|
|
BIL
|
kV
|
170/185
|
75
|
|
|
Crust Protection Grade
|
|
IP23
|
Oil type 55; dry type 65
|
IP23
|
|
Noisy Grade
|
dB
|
|
|
|
|
Appearance Dimensions
|
mm
|
According to primacy wiring circuit schema
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36kV/40.5kV prefabricated transformer substation
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||||
Main Primary Wiring Circuit Schemas for Substation(40.5kV)
Note: we offer special customized products according to client’s requirement.
This equipments also belong to this Prefabricated substation category with a compact and special function of HV, LV and Transformer are all underground. People can enter into it through a well.
This substation is suitable for installing in square seeded strip and park The clients can choose half-buried type or whole-buried type.
Sketch map of half-buried substation
Sketch diagram of whole-buried substation
Miniaturization Intelligent Prefabricated Substation
This series pre-fabricated substation uses imported SF6 ring switch as its HV incoming and outgoing network realized the power ring system easily. And the substation selects integrated automation system which can realize unattended mode.
