Distribution Transformer Oil-Immersed Three-Phase Transformer

• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
• Phase: Three
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Usage: Power
• Model NO.: S9, S10, S11, S9-M, S10-M, S11-M, SG(B)10, SG(B)11
• Coil Number: Other
• Packaging Details: Export Worthy Packing
• Coil Structure: Toroidal
• Transport Package: Export Worthy Packing
• Specification: ISO9001, ISO14001, CE Apply for IEC, JB, ANSI
• Trademark: EACHER
• Origin: Zhejiang, China (Mainland)
• Production Capacity: 10000 PCS/Year

Product Description

Specifications




10kV/315kVA Full-sealed Distribution Transformer 1) CTQC, CE, ISO9001, ISO14001 2) Apply for IEC, GB, ANSI 3) Low losses



Technologies:

Design: relative developed software are adopted in Electromagnetic calculations, strength analysis, leakage magnetic distribution, its electro-dynamic force and electrical insulation.

Manufacture:

Core: effectively upgrade transformer's no-load performance by below methods:

1) The core is made of high-permeable grain-orientated top quality cold-rolled silicon sheet and the material is cut with advanced Germany Geoge GmbH automatic shear line with the cut burs controlled within 0.02mm.

2) The silicon sheet fabrication adopts "no-upper yoke lapped' technology and all lapped joints of the silicon sheet are 45 full-miters. The laminated core sheets are integrally pressed and adhered with epoxy resin to make the three leg two-yoke core a strong and flat integral one with good verticality precision, this effectively improves no-load performance and reduces noises.

3) Bracing plates are used as support between coil leg and inner coil. The iron yoke is tied with epoxy resin-impregnated glass fiber band, and the lower section of oil tank is tightened with counter-pressure bolts. The upper iron and the upper section of oil tank are fixed at three locations. Hence the body inside the oil tank can withstand the vibration during transportation without any shift.

Winding:

1) The high-voltage (HV) coil adopts an interleaved-continuous structure to improve the voltage characteristics under impact voltage and make voltage evenly distributed. All stays and pads are chamfered to keep highly reliable insulation.

2) In the transformer winding there is a zigzag oil guide structure so as to fully cool all areas inside the winding, lower the temperature rise of the winding and the hot points of the winding and prolong the service life of insulation. The HV and MV regulation system are independently provided with voltage-regulating winding to balance the ampere turn of each winding, effectively lower the axial electrodynamic force generated at short-circuit of transformer and improve abrupt short-circuit withstanding capacity.

3) The winding adopts radial "0" margin designed, between the core and the paper sleeve of LV winding, and between the LV, HV, voltage-regulating windings, as well as before insertion of stays and shroud plate they are fully dried and tightly matched to ensure extremely good compactness and concentricity of the entire winding.

Oil tank and accessories

1) The tank wall adopts wide steel sheet, which will be folded into corrugated structure without splicing, in this way welds are decreased and mechanical strength is enhanced, meanwhile, the corrugated wall has diverging effect, and thus plays a role in decrease of noise. The routing troughs and control cabinets of the secondary circuit are all made of stainless steel, so the entire transformer has a simple and good looking.

2) All sealing surface use quality sealing material and are precision-machined.

3) On the edge of the tank there are double sealing grooves, and the outer sealing material is used to shade the atmosphere and ultra-ray to protect the inner sealing being damaged, thus at utmost prolonging service life and enhancing reliability of the seal.
Typical projects

Features:
1) Low loss
2) Low noise
3) High efficiency
4) Low partial discharge
5) Strong mechanical strength and short-circuit withstand ability.
6) Operation reliability
7) Easy maintenance
8) Pretty outline and compact structure
9) 100% guaranteed no leakage

Brief specification
1) Voltage class: 6~110 KV
2) Capacity: 630 kVA to 120, 000 kVA
3) Short-circuit impedance: 4.5~21%
4)Losses: No-load losses is fully comply with IEC standard requirements

Rated power (kVA)	High Voltage (kV)	H.V Tap range	Low Voltage (kV)	Connection Symbol	Short-Circuit Impedance (%)	No-load Loss (W)			On-Load Loss (W)			No-load Current (%)
						9 Type	10 Type	11 Type	9 Type	10 Type	11 Type
30	6 6.3 10 10.5	±5% ±2×2.5%	0.4	Dyn11 Yyn0	4	130	110	100	600	600	600	2.1
50						170	150	130	870	870	870	2
63						200	180	150	1040	1040	1040	1.9
80						250	200	180	1250	1250	1250	1.8
100						290	230	200	1500	1500	1500	1.6
125						340	270	240	1800	1800	1800	1.5
160						400	310	280	2200	2200	2200	1.4
200						480	380	340	2600	2600	2600	1.2
250						560	460	400	3050	3050	3050	1.2
315						670	540	480	3650	3650	3650	1.1
400						800	650	570	4300	4300	4300	1
500						960	780	680	5150	5150	5150	1
630					4.5	1200	920	810	6200	6200	6200	0.9
800						1400	1120	980	7500	7500	7500	0.8
1000						1700	1320	1150	10300	10300	10300	0.7
1250						1950	1560	1360	12000	12000	12000	0.6
1600						2400	1880	1640	14500	14500	14500	0.6
2000					5	2830	2270	1940	17140	17140	17140	0.6
2500						3350	2690	2300	20260	20260	20260	0.5

Rated power (kVA)	Weight  (kg)			Overall dimension(mm)			Gauge (mm)
	Active part	Oil	total	L	W	H
30	180	85	310	750	720	930	400×400
50	210	90	420	780	740	950	400×400
63	280	110	520	800	750	1000	400×400
80	310	110	520	820	770	1040	400×400
100	340	120	560	825	790	1020	550×550
125	380	130	670	830	790	1120	550×550
160	480	140	770	1070	670	1085	550×550
200	560	160	890	1140	740	1160	550×550
250	670	180	1070	1210	790	1200	550×550
315	750	230	1230	1380	900	1230	550×550
400	930	250	1450	1380	900	1300	550×550
500	1070	260	1670	1490	1000	1320	550×550
630	1290	320	1960	1570	1030	1390	660×660
800	1590	350	2340	1620	1050	1460	660×660
1000	1740	450	2760	1760	1190	1590	660×660
1250	2080	490	3200	1780	1140	1670	660×660
1600	2530	640	3950	1970	1290	1750	820×820
2000	3000	800	4890	2100	2050	2000	820×820
2500	3300	1180	6280	2330	2210	2150	820×820

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Company Introduction
SHENDA electric group is a manufacturer and wholesale company that manufactures good & high quality electric transformers from 2000. The company provides the customized products and OEM service. The factory own the 3 production base worldwide,2 in China and 1 in USA.We also own a transformer research institute with more than 30 electric engineers .