We expertise in offering an unmatched quality range of Oil Immersed Transformer - 220kV. These transformer are bear operating characteristics of power networks in urban and rural areas of our country and are fabricated adopting advanced technologies and equipment.

Technical Characteristics

• Low loss: The no-load loss reduced by about 40%, and the load loss reduced by 15%, compares to the actual National Standards GB6451-1999.
• Low noise: The noise level achieved below 60dB, dropped by nearly 20dB compares to the National Standards. We can also manufacture transformers (below 55dB) to meet customer¡¯s requirements.
• Low partial discharge: The full procedure of 220kV products is completed in a depurated workshop, and the metal components, insulation components of the active part are completely rounded end. The partial discharge is controlled below 70pc.
• Strong short-circuit withstand ability: Our company independently designed and manufactured the SFP10-200000/220 transformer, which passed the short-circuit test of China National Transformer Quality Supervision Testing Center.
• Good Aesthetic: Corrugated tank, shot-blast cleaning, electrostatic powder spraying, wide slice radiator and never-fading.
• No leakage: All the sealings are fixed, the rims use two sealing and all the sealing is imported. Seriously promise to be no leakage.

Structure and construction features:

All products should be calculated in electric field, magnetic field, temperature rise and short-circuit electric power force by software in order to guarantee magnetic field and oil flow of winding are distributed symmetrically. It has higher electric insulation performance and short-circuit withstand ability.

• Windings

HV winding adopts interleaved-continuous or inside continuous model, which improves the winding vertical capacitance distribution under the impulse voltage. Windings are oil-cycle structure so that it can reduce winding temperature rise. The products¡¯ life is 30 years. The inside of winding has hard supporting and swallow-tail cushion, insulation of the top and the bottom ends are platform pressing plates, makes high mechanical strength and resistance to the sudden short-circuit ability. Winding internal insulation parts and active part of insulation parts are rounded to reduce partial discharge

• Core

The core is made of high quality cold-rolled silicon-steel sheet, without holes, frame structure , the D type yoke structure offers the large area platform, Step-lapping and laminated, cut by step-lap core lamination line from GEORG Co. of Germany in order to guarantee core burr smaller than 20¦Ìm , reduce no-load loss, no-loaded current and noise level.

• Tank

Tanks structures are bell type and barrel type. The plates are curved to corrugated wall. All the sealings are fixed. Metal parts are round horn and go hair. Welding seam and sealed place pass three leakage testing (fluorescence, positive pressure, and negative pressure). The paint is according to the electrical home appliances antirust requirements. For the large capacity transformer, the tank adopts the magnetic shielding to reduce the stray loss

• Active Part

The active part assembled whole and dried under invariable pressure to ensure symmetrically shrink of windings with less rebound, so effectively improve electrical strength and the short-circuit withstand ability. The active part assembled in the purification workshop, after that put the active part into automatic controlling Kerosene Vapor Drying Plant

We leverage on our state-of-the-art manufacturing unit as well as sophisticated machinery in fabricating an outstanding range of 110kV Power Transformers. These are also procured from Hangzhou Qiantang River Electric Group Co., Ltd and bears strong short-circuit withstand ability, low partial discharge, good aesthetics etc.

Technical Characteristics:

• Low loss: The no-load loss reduced by about 40%, and the load loss reduced by 15%, compares to the actual National Standards GB6451-1999
• Low noise: The noise level achieved below 60dB, dropped by nearly 20dB compares to the National Standards. We can also manufacture transformers (below 55dB) to meet customer’s requirements
• Low partial discharge: The full procedure of 110kV products is completed in a depurated workshop, and the metal components, insulation components of the active part are completely rounded end. The partial discharge is controlled below 100pc
• Strong short-circuit withstand ability: Our company independently designed and made the SF10-160000kVA/110kV transformer, which passed the short-circuit test of China National Transformer Quality Supervision Testing Center
• Good Aesthetic: Corrugated tank, shot blast cleaning, electrostatic powder spraying, wide slice radiator and never-fading
• No leakage: All the sealings are fixed, the rims use two sealing and all the sealing is imported. Seriously promise to be no leakage

Structure and Technical Features:

• Windings

HV winding adopts interleaved-continuous or inside continuous model, which improves the winding vertical capacitance distribution under the impulse voltage. Windings are oil-cycle structure so that they can reduce winding temperature rise. The products¡¯ life is 30 years. The inside of winding has hard supporting and swallow-tail cushion, insulation of the top and the bottom ends are platform pressing plates, makes high mechanical strength and resistance to the sudden short circuit ability. Winding internal insulation parts and active parts of insulation are rounded to reduce partial discharge

• Active part

The active part assembled whole and dried under invariable pressure to ensure symmetrically shrink of windings with less rebound, so effectively improve electrical strength and the short circuit withstand ability.

• Core

The core is made of high quality cold-rolled silicon-steel sheet, without holes, frame structure; the D type yoke structure offers the large area platform. Step-lapping and laminated, cut by step-lap core lamination line from GEORG Co. of Germany in order to guarantee core burr smaller than 20¦Ìm, reduce no-load loss, no-load current and noise level

• Tank

Tanks structures are bell type and barrel type. The plates are curved to corrugated wall. All the sealings are fixed. Metal parts are round horn and go hair. Welding seam and sealed place pass three leakage testing (fluorescence, positive pressure, and negative pressure). The paint is according to the electrical appliances antirust requirements

(iii) Assembly

All components are pre-assembled in the factory, set shipment, and enclosed users service manual.

Technical parameters:

• Technical parameter sheets for SF10 series 110kV three phase double-winding off-load tap changer power transformer
• Technical parameter sheets for S10 series 110kV three phase double-winding off-load tap changer power transformer

We capitalize on our profound industrial expertise in offering world class Oil Immersed Transformer - 35kV. These are equipped with RTCC which functions as monitoring and remote control and bears low noise, good aesthetic and strong ability of withstanding short-circuit.

Technical Specification:

• Voltage level: 35kV
• Model of voltage regulation: excitation voltage regulation (OLTC), off-excitation voltage regulation
• Power Capacity: 4000kVA and below
• Frequency: 50Hz, 60Hz
• Phase No.: three phases
• Vector Group: Yd11, Ynd11, Dy11, Dyn11, Ynyn0d11
• Impedance Voltage: According to customers¡¯ requirements
• Service Condition: According to customers¡¯ requirements
• Type of cooling: ONAN, ONAF
• Insulation level: Power frequency voltage withstand: AC-85kV, impulse withstand voltage: LI-200kV

Structure and construction features:

• Core

The core sheets are cut by the step-lap core lamination line from GEORG Co. of Germany. They are step-lapping which ensures a particularly favorable magnetic flux distribution at the joints. No-load loss, no-load current and noise are minimized

• Active Part

Bringing board construction is adopted. In order to strengthen ability of withstand short-circuit, we nail some pressure nails around pressure board and use support beam to connect HV and LV claps to make cores a whole. Otherwise, we paint special plastic to surface of core pole to make the silicon steel sheets link. After solidification, core sheets are a whole body so they can reduce noise and increase mechanical strength and prevent rust. Underside active part support wall of tank with strong electric pressure board in order to make underside active part fixed safely

• Windings

HV winding is continuous model while LV winding is continuous or screwy model. And regulation windings are separate, so turns are even and mechanism power are minimized HV and LV windings use construction of conductor of oil which makes oil oriented, so oil stream will move heat away

• Tank

Tanks structures are bell type and barrel type. The plates are curved to corrugated wall. Our tanks are good aesthetic, compact and high ability of mechanical strength. Avoiding leakage, there are fine machining flanges in key connection parts (bushings, pressure valves, switches etc.)
 
Technical parameters:

• S10 series 35kV three-phase double-winding off-load tap changer power transformer
• SZ10 series35kV three-phase double-winding load tap changer power transformer.

Over the years we have been successfully catering our broad client base all across the country with our exclusive range of 11kV Distribution Transformers. These have sealed box to protect HV and LV bushings and bus bars, and there is interface in connects. With multi-functional and omni-directional protection and controls exceeding temperature protection, exceeding voltage protection, gas relay protection and moving oil pressure protection.
 
The different varieties available with us include the following Totally-enclosed type:

• S(Z)9 series
• Coil core series
• Embed type
• Amorphous alloy
• Petrochemical series

Technical Specification:

• Voltage level: 6kV, 10kV
• Model of voltage regulation: Off-excitation voltage regulation
• Tapping range: ¡À5%, ¡À2X2.5%
• Power Capacity: 30-1600kVA
• Frequency: 50Hz, 60Hz
• Phase No.: single phase, three phases
• Vector Group: Yyn0 or Dyn1
• Impedance Voltage: Please see data table or according to customers¡¯ requirements
• Service Condition: Ambient temperature not more than 40¡æ or according to customer¡¯s requirements
• Type of cooling: ONAN
• Insulation level: Power frequency withstand voltage: AC-35kV,Impulse withstand voltage: LI-75kV

Our cutting edge technology enables us in offering Cast-Resin Dry Type Transformers. These transformers are fabricated in conformation to the international standards and offers low partial discharge and high electric intensity, Flame resistance, high performance and low maintenance.

Technical Characteristics:

• The noise of transformer is originated from its core; our company adopts the first in our county the step-lap core lamination line imported from Georg Co. of Germany. The advanced technologies greatly improve the distribution of magnetic-flux in the core to reduce loss and noise.
• CAD and high quality silicon steel sheets are used and the flux density is made far lower than the saturation point, so harmonics in core and the noise are reduced.
• All clamped parts are buffered by silicon rubber and elastic components to reduce vibration and noise, and a specified resin is coated on the surface of core for sound insulation.
• Low partial discharge and high electric intensity: The solid insulation composed of quality resin and glass fiber provides high dielectric strength and low partial discharge. The breakdown voltage is not less than 34kV/mm and the partial discharge can be less than 5pC
• Flame resistance and non environment pollution: When transformer is on fire, heat generated from the composite insulation is extremely small (about 6.5mJ/kg), so that the fire can be automatically extinguished
• Damp proof: It is able to operate at 100% of relative humidity, because both the core and the winding assembly are coated with resin
• The transformer possesses high resistance to corrosion too
• It also has high ability of over-loading high thermo-stability, less dimension and weight, easy to install and maintenance free, etc
• Cast-resin dry type transformer is applicable to following cases, such as high buildings, commercial centers, airports, railway stations, wharfs, subways, plants, and underground substation 
  

Technical Specifications:

• Voltage class: 10kV, 35kV
• Model of voltage regulation: off-excitation or on-load tap changer
• Tapping range: ¡À5%, ¡À2¡Á2.5%, or ¡À3¡Á2.5%
• Power Capacity: 3-10000kVA
• Frequency: 50Hz, 60Hz
• Phase No.: single phase or three phases
• Vector Group: Yyn0 or Dyn11 or according to customers¡¯ requirements
• Impedance voltage: please see data table or according to customers¡¯ requirements
• Service condition: 100% relative humidity, ambient temperature not more than 40¡æ or according to customers¡¯ requirements
• Type of cooling: ONAN or ONAF
• Guard class: IP00, IP20, IP23
• Thermo-tolerance class of insulation: F
• Insulation level: a. for 10kV class: LI75AC35; b. for 35kV class: LI170AC70

Structure and construction features:

• Core

The core is made of grain-oriented cold-rolled silicon steel sheet cut for step-lapping and laminated in the step-lap core lamination line from Georg Co. in Germany. In this way, the distribution of magnetic lines is improved and flux density in the step-lap joint is reduced. Owing to excellent equipment, quality silicon steel sheets and advanced technology, no-load performance of the core is greatly improved. Compared with traditi

We are backed by sophisticated machinery and innovative technologies in fabricating  H Class Non-Sealed Type transformers. These are made of made of NOMEX insulated materials certificated by UL in USA and are safe, reliable, energy-saving, fireproof, flameproof, and requires easy maintenance.
 
Advantages:

• Advanced design
• Reasonable structure
• Good aesthetic
• Technical performance index is superior to national standard
• Partial discharge
• No-load loss
• Load loss
• Low noise
• Operating at humidity circumstance

Our transformers are intricately designed and finds wide application regions with special requirements including:

• Dirty, wet surroundings near lake, river, sea, heavy-load region
• Skyscrapers
• Airports
• Railway stations
• Wharfs
• Subway
• Hospital
• Power stations
• Shopping centers
• Residential dense district
• Petrochemical
• Nuclear power stations
• Nuclear powered submarines

Features

• Due to elaborate design for the windings and vacuum pressure immersion treatment, which can ensure SGB 10 transformers minimum partial discharge(¡Ü5pc)£¬ without any chaps and reduction of insulation level during whole service life
• The HV winding is continuous structure. The LV winding is foil structure. Use vacuum pressure immersion and high temperature solidifying treatment and adopt the high strength biphenyl aether material or ceramic as support. So it has well insulation performance and short-circuit withstand ability
• Difficult to flame, flameproof, innocuous, non-pollution, self-extinguishing, fireproofs.
• Even if burning under high temperature, SGB 10 transformers seldom bring any smoke.
• Hermo-tolerance class of insulation: H (180¡æ)
• Insulation layer is very thin and equality, it has extremely over-load ability in short duration, and it is not necessary to force air cooling, it allows 120% over-load for long duration and 140% over-load for 3 hours. Due to anti-aging insulation material with bound, so it can reach full-load at ¡À50¡æ condition
  

Our Padmounted Transformers have load breaks and fuses are all immersed in insulating fluid. These can be applied in places with rigid requirements of fireproofing and explosion-proofing with high ignition point oil usage. Our range finds application in:

• Electrical energy measuring
• Reactive power compensation
• Low voltage shunting
• Substitutes for imported ones
• Residential blocks
• Commercial centers
• Railway stations
• Airports
• Factories
• Enterprises
• Hospitals
• Schools

 Features:

• Compact
• Light weight
• Low noise
• Low loss
• High reliability
• Small dimensions
• Convenient
• Easy to mount
• Dead front
• Totally-enclosed construction
• Ensures high security
• Double fuse protection can reduce operation costs
• Fuse-element of Bay-O-Net is both temperature and current sensitive
• Suitable for end-use feed and loop feed
• HV terminals are cable inserted construction
• Function of cut-out switch
• Easy to operate
• Core/coil assemblies are three phases, five-legged or three-legged and step-lapping design which can minimize the noise and losses and enhance the ability to withstand short-circuit and over-loading
• Filled with high ignition point insulating fluid
• Surface being treated for damp-proof, mild-proof and saline-fog-proof, the transformers are suitable for use in severe conditions

ELSP and Bay-O-Net are used

• The ELSP oil-immersed backup fuse acts only when breakdown occurs inside the cabinet
• The Bay-O-Net fuse acts only when breakdown or overload takes place in secondary side, or the fluid temperature is too high
  

The Intelligent Pre-Installed Transformer Substation offered by us are suitable for three-phase AC systems with rated voltage below 12 kV and rated frequency of 50Hz and are installed with:

• Power distribution equipment
• High-voltage switches (RM6 or GA switch distribution long-distance automatic control equipment)
• Transformers
• Low-voltage distribution equipment
• Low-voltage intelligent switches
• Reactive compensation integrated together according to certain wiring method

Application:

• Public distribution grids
• Loop feed
• End-used residential areas
• Factories
• Skyscrapers
• Airports
• Wharfs
• Temporary facilities with capacity less than 800 kVA

Features:

• Can fulfill the integration of primary and secondary systems
• Simplifies the construction process
• The integrated products combine the functions of the domestic padmounted transformer substation, the us type and the european type
  
  the high-voltage and low-voltage switches of the zyb series transformer substations can be controlled manually, electrical local or electrical remote. Can display the accident alert, test the electric parameters, communicate and dispatch and make schemes, etc
        
• Small size
• Small area requirement
• Compact structure
• Pleasant shape
• Light on-spot work
• Short installation and debugging period
• Safe and reliable operation
• Convenient maintenance
• Movable as practical need
• Adopts the oil-immersed s9-m, s10-m series totally-enclosed transformers the dry-type and core coil transformers can be used