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Quick Details

  • Place of Origin: Beijing, China (Mainland)
  • Brand Name: Daelim
  • Model Number: SFZ11
  • Usage: Power
  • Phase: Three
  • Coil Structure: Toroidal
  • Coil Number: Autotransformer
  • color: according to customer's demand or standard
  • Connection Symbol: YNd11
  • Winding Material: copper
  • Rated Voltage: 220kv 242kv
  • Rated Capacity: 315000kva-420000kva
  • Cooling Method: Oil-immersed Type Transformer
  • Standard: ISO9001, ISO14001, CE Apply for IEC, JB, ANSI
  • Material: Copper Winding
  • Frequency: 50/60Hz
  • Certification: KEMA CESI CTQC

Packaging & Delivery

Packaging Details: package details:standard international package ,proper for any special customer air or sea requirements ,one set one case
Delivery Detail: according to your quantity

Top Value 220kv Three Phase Double Winding On Load  Power Transformer

Product Description
  •          Main features:
    • Low loss 
    • Optimization of electromagnetic calculations, using combined technology of electrical shielding and magnetic circuit, effectively controlled leakage, so as to reduce the load loss and to avoid partial overheating
    • Used high quality cold-rolled lattice orientation high permeability silicon steel, to reduce the load loss, no-load current 
    • Core all-helical stacking with STEP joints, and advanced stacking process, reduced the load loss, load current and electromagnetic noise
    • Low partial discharge 
    • To ensure the safe and steady operation of the transformer under continuous rated voltage, our electric power research institute conducted a lot of research to develop a more reasonable insulation structure, plus the strict technology specifications and technical staff experience, ensured the low partial discharge of our products
    • High strength 
    • Adoption of six-side method positioning for the body, meets the transportation requirements of, horizontal acceleration not more than 0.3G, vertical direction not greater than 0.15g 
    • Upper and lower clamps and the formation of tight fixed side beam frame
    • Tank can withstand the vacuum test and required positive pressure test
    • Low noise 
    • Use of high-quality core silicon steel
    • Core step stepping joints
    • Reduction of the flux density, despite of the increase of cost
    • Use low-noise fan as the air cooling equipment
    • Increases the shock absorbing measures
    • Well interior-protection, to avoid direct rigid contact of the body and tank
    • Maintenance-free 
    • Our company adopts the domestic leading technology, use fully enclosed structure for the transformer tank, ensuring product life of long term and maintenance-free operation

 

Specifications

1. CESI certificate 
2. High short-circuit withstand 
3. Low loss, PD and noise 
4. CTQC certificate 
5. No leakage 

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.

Rated power
(kVA)


High Voltage
(kV)


H.V Tap range


Low Voltage
(kV)


Connection Symbol


Short-Circuit Impedance
(%)


No-load Loss
(kW)


On-Load Loss
(kW)


No-load Current
(%)

9 Type

10 Type

11 Type

9 Type

10 Type

11 Type

31500

220
242

±8×1.25%
±8×1.5%

6.3,6.6,
10.5,11,
20,34.5,
35,37,
38.5,66,
69

YNd11

12~14

38

34

30

135

128

128

0.7

40000

45

41

36

157

149

149

0.63

50000

54

49

43

189

180

180

0.56

63000

63

57

50

220

209

209

0.56

90000

80

72

64

288

274

274

0.49

120000

99

89

79

346

329

329

0.49

150000

116

104

93

405

385

385

0.42

180000

135

122

108

468

445

445

0.42

Main technical parameters for three-phase two winding non-excitation-tap-changing power transformer

Rated power
(kVA)


High Voltage
(kV)


H.V Tap range


Low Voltage
(kV)


Connection Symbol


Short-Circuit Impedance
(%)


No-load Loss
(kW)


On-Load Loss
(kW)


No-load Current
(%)

9 Type

10 Type

11 Type

9 Type

10 Type

11 Type

31500

220
242

±8×1.25%
±8×1.5%

6.3,6.6,
10.5,11,

13.8,15.75
20,35,
38.5,

YNd11

12~14

35

135

32

128

28

128

0.7

40000

41

157

37

149

33

149

0.7

50000

49

189

44

180

39

180

0.65

63000

58

220

52

209

46

209

0.65

75000

67

250

60

238

54

238

0.6

90000

77

288

69

274

62

274

0.55

120000

94

345

85

328

75

328

0.55

150000

112

405

101

385

90

385

0.5

160000

 

 

 

117

425

105

404

94

404

0.49

180000

 

 

 

128

459

115

436

102

436

0.46

240000

 

 

 

160

567

144

539

128

539

0.42

 

 

 

Packaging & Shipping

 

Our Services

1. We offer the best solution and products to fulfill the buyers' requirments.

2, We can arrange technicians to install the equipments and train your staff on site.

3, Anytime, we provide considerate technical consultation.

4, Prompt reply for your inquiry and feedback.

 
Company Information

Beijing Daelim Green EP Tech Co., Ltd. is mainly engaged in the import & export of electric products and equipment. Our business team has more than 15 years' foreign business experience, and also has a unique understanding of electrical products and overseas markets. We have established and extended business relationships with customers and partners in Southeast Asia, the Middle East, Europe, Africa, North America and South America.


The main products and equipment we are dealing with: power transformer, current transformer, potential transformer, vacuum & SF6 circuit breaker, load break switch, disconnector, switchgear panel, power plant, transmission line equipment.


We provide competitive prices, high quality products, timely shipment and efficient services to develop our cooperation with all of our customers. We are trading in accordance with international traditions and practices. We would like to extend business with our customers and partners on the basis of cooperation and mutual benefit..

 

Application

Our products include: Power transformer, Circuit breaker, Disconnector switch,.Current transformer & Potential transformer which are wildly applied to power station, transformer substaion,  power distribution station.

 

Trade Show

 

F&Q

1.Why choice us Daelim

After compare quality,delivery and price you will find out answer

 

2. Is that possible to be one of distributor of Daelim in my country

Yes,once you action is fast enough

 

3,More question......

Feel free to contact you you will get immediately reply

 

Tel:86-10-59574195

Whatsapp: 13718556307

Web:www.daelim-electric.com

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