SG(B)10 Series Three-Phase Open TypeDry-type TransformerFeatures:

SG(B)10 Three-phase Open TypeDryThe transformer is an open-type dry transformer made with DuPont's NOMEX (Normark) insulation material through the VPI (Vacuum Pressure Impregnation) process, with its technology originating in the United States. It does not support combustion during use, can resist fire, will not explode or release toxic gases, and will not harm the environment, other equipment, or humans; it is insensitive to humidity, dust, and pollution; it operates without partial discharge and will never crack. It boasts high reliability, with both high and low voltage coils insulated with NOMEX material and repeatedly impregnated with H-class solvent-free varnish through VPI vacuum pressure equipment, followed by multiple high-temperature baking solidification. The product is H-class (180°C), while the main insulation material is C-class (220°C), offering strong overload capacity and excellent short-circuit resistance. In well-ventilated conditions, it is permitted to operate at a 20% overload.

SG(B)10 Series Three-Phase Open Type Dry TypeTransformerApplication Scope:

The SG(B)10 series three-phase open dry-type transformers boast strong resistance to thermal shock, high overload capacity, flame retardancy, excellent fire-resistant properties, and insensitivity to humidity and dust, making them highly adaptable.

SG(B)10 Series Three-Phase Open TypeDry-Type TransformerIdeal for installation in humid environments and areas with high fire safety requirements and heavy loads, this power distribution equipment is suitable for high-rise buildings, airports, stations, docks, subways, power plants, metallurgical industries, shopping centers, densely populated residential areas, as well as petrochemical, nuclear power, and submarine facilities.

According to customer requirements, configurable in standard steel plate, aluminum alloy, or stainless steel enclosures. Protection ratings available include IP20, IP23, etc., with high and low voltage busbars for incoming and outgoing lines as per customer specifications.

　　




Nominal Capacity Rated Power (KVA)	Voltage Combination Voltage Combination			Connector group numbering Connection symbol	Short-circuit Impedance Short circuit impedance (%)	No-load loss No-Load Loss (W)	Load loss Load Losses 75℃ (W)	No-load current No-Load Current (%)	Decibel LpA Noise Level (dB)	Weight Weight (kg)
	High-pressure H.V (KV)	Tap Tapping Range	Low-pressure L.V (KV)
125	6 6.3 6.6 10 10.5 11	±5% ±2×2.5%	0.4	Y yn0 D yn11	4	480	1710	0.9	45	750
160						550	1860	0.9	45	900
200						630	2210	0.8	46	1050
250						730	2410	0.8	47	1280
315						890	3040	0.7	47	1550
400						990	3490	0.7	48	1700
500						1170	4280	0.6	48	2150
630						1350	5150	0.5	48	2400
630					6	1300	5220	0.5	49	2450
800						1530	6100	0.4	50	2950
1000						1790	7130	0.4	51	3500
1250						2110	8500	0.3	52	3900
1600						2470	10290	0.3	53	4600
2000						3350	12690	0.25	54	5500
2500						4000	15080	0.25	54	6200

 

Normal usage conditions are met when the following usage requirements are satisfied:

a. Altitude

Elevation does not exceed 1,000 meters.

b. Environmental Temperature

　　ToHigh Temperature        +40℃

　　ToHigh Average Daily Temperature +30℃

　　ToAverage Annual Mean Temperature +20℃

　　ToLow Temperature -30℃ (for outdoor transformers)

　　ToLow temperature -5℃ (for indoor transformers)

c. Power Voltage Waveform

The waveform of the power voltage is similar to a sine wave.

d. Symmetry of Multi-phase Power Supply Voltage