S13-M Type 10kV Series Hermetically Sealed Distribution Transformer

Our company develops and manufactures the S13-M series of Hermetically Sealed Oil-immersed Power Transformers. This Transformer is engineered for superior performance, offering advantages like low loss, low noise, and high efficiency, leading to significant energy savings and reduced environmental impact. Unlike conventional oil-immersed units, this hermetically sealed Transformer eliminates the conservator. The bellows tank automatically compensates for oil volume changes through its elastic walls. This design seals the Transformer from atmosphere, preventing oil deterioration and insulation aging. This robust Transformer ensures enhanced operational reliability and requires no maintenance during normal service, providing a dependable power solution.

product details

Type Designation

1	Three-phase Oil-immersed Transformer
2	Performance Level Code
3	Sealed Construction
4	Rated Capacity kVA
5	Voltage Class kV

Service Conditions

1.Maximum ambient temperature: +40°C
2.Minimum ambient temperature: -25°C
3.Altitude: <1000m
4.Maximum monthly average relative humidity: 90% (at 20°C)
5.Installation location: Installed indoors or outdoors at sites without fire or explosion hazards, severe contamination, chemical corrosion, and severe vibration.

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Technical Parameters

Rated capacity (KVA)	Voltage Combination And Tap Range			Connection group label	S13		S11		Short Circuit Impedance (%)
Rated capacity (KVA)	High voltage (KV)	Tapping Range Of Voltage %	Low voltage (KV)	Connection group label	No-load loss (KW)	On-load loss (KW)	No-load loss (KW)	On-load loss (KW)	Short Circuit Impedance (%)
30	6 6.3 6.6 10 10.5 11	±5 ±2×2.5	0.4	Dyn11 Yzn11 Yyn0	0.08	0.63/0.6	0.1	0.63/0.6	4.0
50					0.1	0.91/0.87	0.13	0.91/0.87
63					0.11	1.09/1.04	0.15	1.09/1.04
80					0.13	1.31/1.25	0.18	1.31/1.25
100					0.15	1.58/1.5	0.2	1.58/1.5
125					0.17	1.89/1.8	0.24	1.89/1.8
160					0.2	2.31/2.2	0.28	2.31/2.2
200					0.24	2.73/2.6	0.34	2.73/2.6
250					0.29	3.2/3.05	0.4	3.2/305
315					0.34	3.83/3.65	0.48	3.83/3.65
400					0.41	4.52/4.3	0.57	4.52/4.3
500					0.48	5.41/5.15	0.68	5.41/5.15
630				Dyn11 Yyn0	0.57	6.2	0.81	6.2	4.5
800					0.7	7.5	0.98	7.5
1000					0.83	10.3	1.15	10.3
1250					0.97	12	1.36	12
1600					1.17	14.5	1.64	14.5
2000					1.55	18.3	1.94	18.3	5.0
2500					1.83	21.2	2.29	21.2	5.0

Product Features

1.The transformer core is laminated from imported high-quality cold-rolled silicon steel sheets, significantly reducing no-load loss and no-load current. The core is also bound to ensure compactness and reduce noise.
2.The high and low-voltage windings are wound with oxygen-free copper. The low-voltage winding for 500 kVA and below employs a double-layer cylindrical structure, while for 630 kVA and above, it uses a double or quadruple spiral structure. The high-voltage winding utilizes a multi-layer cylindrical structure.
3.The transformer vector group is Dyn11, which reduces the impact of harmonics on the power grid and improves power supply quality.
4.The transformer features a fully sealed structure, extending its service life and eliminating the need for core lifting (internal inspection) and maintenance.
5.The measured noise level is lower than the standard requirement.