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6-10 KV SCB series epoxy resin cast dry type distribution transformer

Product Features
Resin insulation dry-type transformer is an advanced foreign technology introduced by our company.We independently developed series of thin-walled dry-type transformers with fillers,such as SC(B)10,SC(B)11,SC(B)12 and SC(B)13.Because the coil is encapsulated by epoxy resin,it is flame-retardant,fire-proof,explosion-proof, maintenance-free,pollution-free and small in size,and can be directly installed in the load center.At the same time,the scientific and reasonable design and pouring technology make the product have smaller local discharge,low noise and strong heat dissipation ability, is equipped with intelligent temperature controller, which has the functions of fault alarm,over-temperature alarm,over-temperature trip and black brake,and is connected with computer through RS485 serial interface, so it can be monitored and controlled centrally.Because our dry-type transformer has the above characteristics,it is widely used in power transmission and transformation systems,such as hotels,airports,high-rise buildings,commercial centers,residential quarters and other important places,as well as subways,smelting power plants, ships,offshore drilling platforms and other places with harsh environment.

product details

Product Description

Iron Core

The iron core is high-quality cold-rolled silicon steel sheets,with a fully inclined seam structure.The core column is bound with F-grade weft-free adhesive tape,and the surface of the iron core is sealed with insulating resin paint to prevent moisture and rust,which reduces the no-load loss,no-load current and iron core noise.The clamps and fasteners are specially surface-treated,which further improves the appearance quality of the products.

High-voltage Winding

The high-voltage winding is cast with epoxy resin filled in vacuum,which greatly reduces the local volume and improves the electrical strength of the coil.The inner and outer walls of the winding are filled with glass fiber grid plates,which enhances the mechanical strength of the coil and improves the product's ability to resist sudden short circuit,and the coil will never crack.

Low-voltage Winding

The low-voltage winding adopts foil structure,which solves the problem of axial helix angle when winding wire,and makes the ampere turn more balanced.At the same time,the coil adopts axial cooling air duct,which enhances the heat dissipation ability.DMD epoxy resin prepreg is adopted between winding layers, which is solidified as a whole

Manufacturing Process

The coil is wound on a high-precision winding machine,and the low-voltage winding adopts foil winding structure.When the transformer has a large capacity,there is a ventilation duct.After winding,vacuum drying is carried out,and the whole pouring and curing process is completely operated according to the process requirements. All processes need to be strictly monitored and adjusted as appropriate.The precision manufacturing process of casting makes the coil free of bubbles and cavities,and makes the quality of the transformer reach high quality.

Temperature control system and Air cooling system

Cross-flow top-blown cooling fan is adopted,which has the characteristics of low

noise,high wind pressure and beautiful appearance,and enhances the overload

capacity of transformer.The temperature control adopts intelligent temperature

controller,which improves the safety and reliability of transformer operation.

Protection shell

Protection shell for transformer for further safety protection,protection grade IP20,

IP23,etc.,shell material with cold rolled steel plate,stainless steel plate for users

to choose.

Copper busbar outlet mode

Conventional outlet,standard closed bus and standard side outlet can be manufactured according to different interface forms,and special outlet mode can also be designed according to user requirements

Implementation Standards

GB/T10228 GB/T1094.11

JB/T10088 GB4208 GB20052 IEC60076

Rated high voltage:10(11,10.5,6.6,6.3,6)kV

Connection group:Dyn11/Yyn0

Insulation level:LI75AC35/AC3

Rated low voltage:0.4kV

Tapping range of high voltage:±5%or±2X2.5%

Frequency:50Hz

Model and meaning

Technical parameter

Technical parameters of SC(B)10series 6kV and 10kV non-excitation voltage-regulating distribution dry-type transformer

Rated capacity kV.A	Voltage combination and tap range			Connection group	No-load 0SS kW	Load loss at different insulation system temperatures kW			No-load Current ) %	Short-circuit impedance %
Rated capacity kV.A	High voltage kV	High voltage Tap range %	Low voltage kV	Connection group	No-load 0SS kW	130℃(B)(100℃)	155℃(F)(120℃)	180℃(H)(145℃	No-load Current ) %	Short-circuit impedance %
30	6 6.3 6.6 10 10.5 11	±2×2.5 ±5	0.4	Dynl1 Yyn0	0.19	0.670	0.710	0.760	2.0	4.0
50					0.27	0.940	1.00	1.07	2.0
80					0.37	1.29	1.38	1.48	1.5
100					0.40	1.48	1.57	1.69	1.5
125					0.47	1.74	1.85	1.98	1.3
160					0.54	2.00	2.13	2.28	1.3
200					0.62	2.37	2.53	2.71	1.1
250					0.72	2.59	2.76	2.69	1.1
315					0.88	3.27	3.47	3.73	1.0
400					0.98	3.75	3.99	4.28	1.0
500					1.16	4.59	4.88	5.23	1.0
630					1.34	5.53	5.88	6.29	0.85
630					1.30	5.61	5.96	6.40	0.85	6.0
800					1.52	6.55	6.96	7.46	0.85
1000					1.77	7.65	8.13	8.76	0.85
1250					2.09	9.10	9.69	10.3	0.85
1600					2.45	11.0	11.7	12.5	0.85
2000					3.05	13.6	14.4	15.5	0.7
2500					3.60	16.1	17.1	18.4	0.7
1600					2.45	12.2	12.9	13.9	0.85	8.0
2000					3.05	15.0	15.9	17.1	0.7
2500					3.60	17.7	18.8	20.2	0.7

Note

The load loss listed in the table is the value of the reference temperature(GB/T1094.11)of different insulation systems in parentheses.The load loss of other insulation systems not included in the table shall be converted according to the reference temperature of the insulation system at 155°C(F)

Technical parameters of SC(B)11 series 6kV and 10kV non-excitation voltage regulating distribution dry-type transformer

Rated capacity kV.A	Voltage combination and tap range			Connection group	No-load 0SS kW	Load loss at different insulation system temperatures kW			No-load Current %	Short-circuit impedance %
Rated capacity kV.A	High voltage kV	High voltage tap range %	Low voltage kV	Connection group	No-load 0SS kW	130℃(B)(100℃	155℃(F)(120℃)	180℃(H)(145℃)	No-load Current %	Short-circuit impedance %
30	6 6.3 6.6 10 10.5 11	±2×2.5 ±5	0.4	Dynl1 Yyn0	0.170	0.670	0.710	0.760	2.0	4.0
50					0.240	0.940	1.00	1.07	2.0
80					0.330	1.29	1.38	1.48	1.5
100					0.360	1.48	1.57	1.69	1.5
125					0.420	1.74	1.85	1.98	1.3
160					0.480	2.00	2.13	2.28	1.3
200					0.550	2.37	2.53	2.71	1.1
250					0.640	2.59	2.76	2.69	1.1
315					0.790	3.27	3.47	3.73	1.0
400					0.880	3.75	3.99	4.28	1.0
500					1.04	4.59	4.88	5.23	1.0
630					1.20	5.53	5.88	6.29	0.85
630					1.17	5.61	5.96	6.40	0.85	6.0
800					1.36	6.55	6.96	7.46	0.85
1000					1.59	7.65	8.13	8.76	0.85
1250					1.88	9.10	9.69	10.3	0.85
1600					2.20	11.0	11.7	12.5	0.85
2000					2.74	13.6	14.4	15.5	0.7
2500					3.24	16.1	17.1	18.4	0.7
1600					2.20	12.2	12.9	13.9	0.85	8.0
2000					2.74	15.0	15.9	17.1	0.7
2500					3.24	17.7	18.8	20.2	0.7

Note

The load loss listed in the table is the value of the reference temperature(GB/T1094.1)of different insulation systems in parentheses.The load loss of other insulation systems not included in the table shall be converted according to the reference temperature of the insulation system at 155°C(F)

Technical parameters of SC(B)12 series 6kV and 10kV non-excitation voltage regulating distribution dry-type transformer

Rated capacity kV.A	Voltage combination and tap range			Connection group	No-load 0SS kW	Load loss at different insulation system temperatures kW			No-load Current ) %	Short-circuit impedance %
Rated capacity kV.A	High voltage kV	High voltage tap range %	Low voltage kV	Connection group	No-load 0SS kW	130℃(B)(100℃	155℃(F)(120℃	180℃(H)(145℃	No-load Current ) %	Short-circuit impedance %
30	6 6.3 6.6 10 10.5 11	±2×2.5 ±5	0.4	Dynl1 Yyn0	0.150	0.670	0.710	0.760	2.0	4.0
50					0.215	0.940	1.00	1.07	2.0
80					0.295	1.29	1.38	1.48	1.5
100					0.320	1.48	1.57	1.69	1.5
125					0.375	1.74	1.85	1.98	1.3
160					0.430	2.00	2.13	2.28	1.3
200					0.495	2.37	2.53	2.71	1.1
250					0.575	2.59	2.76	2.69	1.1
315					0.705	3.27	3.47	3.73	1.0
400					0.785	3.75	3.99	4.28	1.0
500					0.930	4.59	4.88	5.23	1.0
630					1.07	5.53	5.88	6.29	0.85
630					1.04	5.61	5.96	6.40	0.85	6.0
800					1.21	6.55	6.96	7.46	0.85
1000					1.41	7.65	8.13	8.76	0.85
1250					1.67	9.10	9.69	10.3	0.85
1600					1.96	11.0	11.7	12.5	0.85
2000					2.44	13.6	14.4	15.5	0.7
2500					2.88	16.1	17.1	18.4	0.7
1600					1.96	12.2	12.9	13.9	0.85	8.0
2000					2.44	15.0	15.9	17.1	0.7
2500					2.88	17.7	18.8	20.2	0.7

Note

Technical parameters of SC(B)13 series 6kV and 10kV non-excitation voltage-regulating distribution dry-type transformer

Rated capacity kV.A	Voltage combination and tap range			Connection group	No-load 0SS kW	Load loss at different insulation system temperatures kW			No-load current ) %	Short-circuit impedance %
Rated capacity kV.A	High voltage kV	High voltage tap range %	Low voltage kV	Connection group	No-load 0SS kW	130℃(B)(100℃	155℃(F)(120℃)	180℃(H)(145℃	No-load current ) %	Short-circuit impedance %
30	6 6.3 6.6 10 10.5 11	±2×2.5 ±5	0.4	Dyn11 Yyn0	0.135	0.605	0.640	0.685	2.0	4.0
50					0.195	0.845	0.900	0.965	2.0
80					0.265	1.16	1.24	1.33	1.5
100					0.290	1.33	1.41	1.52	1.5
125					0.340	1.56	1.66	1.78	1.3
160					0.385	1.80	1.91	2.05	1.3
200					0.445	2.13	2.27	2.44	1.1
250					0.515	2.33	2.48	2.66	1.1
315					0.635	2.94	3.12	3.35	1.0
400					0.705	3.37	3.59	3.85	1.0
500					0.835	4.13	4.39	4.70	1.0
630					0.965	4.97	5.29	5.66	0.85
630					0.935	5.05	5.36	5.76	0.85	6.0
800					1.09	5.89	6.26	6.71	0.85
1000					1.27	6.88	7.31	7.88	0.85
1250					1.50	8.19	8.72	9.33	0.85
1600					1.76	9.94	10.5	11.3	0.85
2000					2.19	12.2	13.0	14.0	0.7
2500					2.59	14.5	15.4	16.6	0.7
1600					1.76	11.0	11.6	12.5	0.85	8.0
2000					2.19	13.5	14.3	15.4	0.7
2500					2.59	15.9	17.0	18.2	0.7

Note