Pad Mounted Transformer

Brand Name: DONGFU Electric
Voltage: 6.6-35 kV
Capacity: 25-5000 KVA
China Pad mounted transformer manufacturer. YBM series pad mounted transformer is ANSI standard compact transformer substation which is manufactured by DONGFU Electric. Excellent cooling and drying system inside. High quality and low cost. DONGFU Electric’s Pad mounted transformer sell well all over the world, including America, Mexico, Philippines, Chile and so on.

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:

Application: outdoor
Working temperature: -25°C ~ +45°C
Average temperature of the hottest month: +30℃;
Lowest temperature: -25°C
Max. difference in daily temperature: 25K
Altitude: ≤1,000m
Wind pressure: ≤700Pa
Daily average humidity: ≤95% (at 25°C)
Monthly average humidity: ≤95% (at 25°C)
Installation place leaning angle: <3°
Ambience requirement: free from fire, blast, chemical corrosion, avoid vibration

Technical Data Sheet

Item		Unit	Parameter
Rated Voltage Un	HV main loop	kV	12
Rated Voltage Un	LV main loop	kV	0.4
Rated Thermal steady current	HV main loop	kA	16
Rated Thermal steady current	LV main loop	kA	As customer requirement
Rated dynamic steady current	HV main loop	kA	40
Rated dynamic steady current	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

Structure View
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.