China Electrical Power Transformer manufacturer

China 50hz Frequency Oil Immersed Distribution Transformer No Load Voltage Regulation

Product Details:
Place of Origin: China
Model Number: 330kv
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: 200-200000/piece
Packaging Details: wooden case
Delivery Time: 15 DAYS
Payment Terms: LC T/T
Supply Ability: 5000 pieces/year
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Detail Information

Phase: Three Frequency: 50hz
Rated Voltage: 330kv Type: Oil
Rated Capacity: 90mva~360mva Output Voltage: 10.5kv~35.5kv
Usage: Power Vector Group: YNa0d11
High Light:

three phase oil immersed transformer


oil immersed distribution transformer

Product Description

110kV Three-Phase Triplex Windings, No-Load Voltage Regulation, Power Transformer
Product Introduction

330kV power transformers produced by Daelim comply with standard IEC 60076 and requirements

of three phase immersed power transformer”. The core is made of superior grain-oriented cold- rolled

silicon steel sheets and all inclined lapped joints without drilled holes while the coils are made of coppe

r free of Oxygen with beautiful appearance and safe running. They are widely applied to power

transmission & distribution of urban & rual network. These transformers are widely applied to eletrolysis

, transmission, traction, DC transmission and electrostatic precipitation fields. These transformers are

certified by KEMA, CESI, V-check, CTQC, ISO9001 & 14001 and CE,. Daelim is a worldwide partner for

all power applications and industrial companies-Accordingly, the examples of our work are Global:

Whether in South America, Asia or Europe, Whether in the desert or in specially demanding Applications.

Thousands of plants run efficiently and reliably with our technology.


No-loadloss(KW) On-loadloss(KW) Noload
S9 S10 S11 S9 S10 S11
31500 330220
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

China 50hz Frequency Oil Immersed Distribution Transformer No Load Voltage Regulation 0

Main functions and features



330kV low-loss series transformer is our independently developed new generation of

transformers on the basis of absorption of domestic and foreign advanced technology,

which features low local discharge, low loss, low noise, high reliability, strong protection

against abrupt short circuit. Its excellent performance has been recognized by wide

users and highly appraised by experts. The full-sealed suspending-cover free products

sell well nationwide.Amount of local discharge: The apparent discharge amount under

1.5 times of rated voltage is less than 80pC.

Noise : Products of 63MVA and below is lower than 85dB(AN)

Power loss: No-load loss is 30% lower than that of IEC standard.

Reliability: All in-service products have no damages or oil leakage occurred

Short circuit withstanding: Model SFZ11-50000/132 smoothly passed the short-circuit

withstanding test of the national transformer quality supervision and inspection center

and also passed Holland“KEMA” quality Control systom.


The high-voltage 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. 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 point 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.


The core is made of high-permeable grain-orientated top quality cold-rolled silicon

sheet and the material is cut with advanced Germany GmbH automatic shear line with

the cut burrs controlled within 0.02mm. 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

China 50hz Frequency Oil Immersed Distribution Transformer No Load Voltage Regulation 1




Company profile

Qingdao Hengfengyou Electrical Engineering Co. , Ltd. is one of the large-scale electric complete
sets of manufacturers in China, specializing in oil-immersed transformers, dry-type transformers,
high-voltage Cabinets, low-voltage cabinets and substation manufacturing specialized electrical
enterprises. The company is located in the beautiful coastal city of china-qingdao. The company
has a registered capital of 10 million yuan, 20 senior technical personnel, more than 500 employees,
and a sound sales and service system, annual output value of US $1 billion, the products sell well at
home and abroad.

China 50hz Frequency Oil Immersed Distribution Transformer No Load Voltage Regulation 2


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