Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer

Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
Phase: Single
Core: Core-type Transformer
Cooling Method: Oil-immersed Type Transformer
Winding Type: Separated Winding Transformer
Usage: Power
Customization:

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Manufacturer/Factory

Basic Info.

Model NO.
S9, S10, S11, S9-M, S10-M, S11-M
Coil Structure
Toroidal
Coil Number
Autotransformer
Packaging Details
Sea Worthy Packing
Transport Package
Sea Worthy Packing
Specification
CE, ROHS, SGS, GMP, CTQC, ISO, CESI
Trademark
EACHER
Origin
Zhejiang, China (Mainland)
Production Capacity
10000 PCS/Year

Product Description

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
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

Certifications
Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer

Certificates owned by shenda:
100MVA/220kv power transformer short circuit test report
-issued by CESI Italy&CTQC China

120MVA/33KV oil EAF transformer
50MVA/69KV oil power transformer
10MVA/33kv dry-type transformer
Type test report
-issued by KEMA Netherlands

63MVA/110KV Power transformer short circuit test report
-issued by CTQC China

12.5MVA/22KV Rectifier transformer routine test
-issued by V-Check korea

ISO 9001&ISO14001&OHSAS 18001
CE-POWER TRANSFORMER&FURNACE TRANSFORMER&DRY-TYPE TRANSFORMER&REACTOR

Transformer Characteristics
Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer
Winding .
The winding must be especially protected - both against high electrical stress due to
external over voltages and against mechanical overloads by short circuits. They are made of copper or aluminum. Low-voltage windings are made of strip or flat wire while
high voltage windings are manufactured from round or profile wire. ("diamond-dotted paper") bonds the winding into a compact block
while drying and increases the short-circuit capacity additionally.

Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer
Magnetic Core lamination.
The three-limb iron core is made of oblique cut Grain-oriented, seven-step silicon steel lamination insulated on both sides,
guaranteeing low losses and low noise. These values are even improved by laser treatment. It is protected on the surface with a
flash-proof varnish in order to prevent the sheet from corrosion and to reduce the noise.

Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer
Oil tank.
Whether during transport or operation -the tank must be absolutely tight under mechanical stress. We have vast constructional experience, the most modern calculation methods and high-quality welding work. Special attention is paid to
corrosion protection. Pretreatment of the surface is processed by phosphating pickling, contributes to corrosion protection, just
like multi-coating with preset drying times for each layer. On request, hot-dip galvanization provides for even better protection

Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer
Test lab
Testing are conducted for every transformer before delivery.Tests are classified to be routine tests and type test.
A - Routine tests: According to IEC 60076 standard , the following tests must be carried out for all units of the transformers
a- Measurement of winding resistance .
b- Measurement of voltage ratio and check of phase displacement.
c- Measurement of short circuit impedance and load losses.
d-Measurement of no-load losses and current .
e-Dielectric routine tests including the separate source AC voltage withstanding test and short duration induced over voltage withstanding test ( ACSD ) .

B - Type tests :
The following tests shall be carried out
a- Temperature rise test
b- Lightning impulse test

C - Special tests :
a- Determination of noise level according to IEC 60551 .
b- Oil leakage test
c- Overload test at 150 % rated current for one hour after temperature rise test ( top oil temperature rise and winding temperature rise must be measured and recorded in the report test also hot spot temperature rise must be calculated and recorded on the report test ) .
d- Short Circuit Dynamic stability Test (test report from independent and accredited laboratory for similar transformer will be accepted).


Packaging and transportation
Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer



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 .
Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer
Our Services
1. Pre-Sale Service
- Quick response: reply you within 8 hours, to save your time.
- Professional solution: supply professional completed solution base on your technical requirements,  to complete your technical plan.
- Quoataion: submit a competive price within 2 days, to promote your business

2. In Sale Service
- Supplying stipulated completed drawings
- Supplying manufacturing plan and processing photos
- Making the test plan and book hotel for the witness person
- Making good arrangement of the delivery and shipment

3. Afer Sale Service
- Supplying professional supervision and commissioning within 15 days
- Training the workers
- Providing 12 months waranty of quality and perforance

Pole-Mounted Transformer for Oil-Immersed Transformer, Distribution Transformer

RFQ
1,Q:
Are you manufacturer?
 
   A:
Yes, we are manufacturer. Our factory is in JiangShan City, zhejiang  Province.
 
2,Q:
What is your delivery time ? 
 
   A:
Depend on the type of transformer.
 
3,Q:
What is your payment term?
 
  A:
30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it.
 
4,Q:
Are your transformers supported for customization ?
 
  A:
Yes, of course. We can design and produce accroding to the technical requirements and parameters of customers.
 
5,Q:
Do you offer guarantee for the products?
 
   A:
Yes. Different transformers is different. We offer at least one year guarantee for all of our transformers.
 
6,Q:
Do you accept Factory Acceptance Test?
 
   A:
Yes. It's available. And we are responsible for each set transformer's testing (ICE).
 
7,Q:
Do you assign engineer for after-sale service?
 
   A:
Yes. For our products,we all provide after-sale installation instructions service
 
 

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Diamond Member Since 2013

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Manufacturer/Factory
Number of Employees
26
Year of Establishment
2007-11-07