Transformers

Our manufacturing company offers a comprehensive electrical engineering plant that provides high quality Transformers, Metallurgy Industry Solutions and Power Substation Turnkey Projects.

We produce a full range of transformers including Distribution transformers up to 500kVA 35KV, Power transformers up to 100 MVA 230KV, Photovoltaic Solar Inverter transformers from 500kVA to 315MVA, Dry type transformers up to 10 MVA 35KV, Padmount transformers, Furnace transformers and other special application transformers. We have obtained ISO9001, ISO14001, UL, OHSAS18001 certificates and KEMA, CESI test report for our large transformers.

We provide various electric furnace solutions such as electric arc furnace, induction melting furnace, ladle refining furnace and submerged arc furnace for steel making and metallurgy industry.

We are also experienced in power substation turnkey projects, and we offer power substations equipment such as CT, PT, circuit breakers, insulator, cables, switchgear, disconnectors, GIS, etc.

Our Company ensures that each one of our delivered units has undergone rigorous full acceptance testing. We provide one- package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services, with the support of our customers, we have achieved significant result in our business, our products are now operating in more than 50 counties in the world. We aim to be your most reliable supplier as well as your best partner in business!

OUR GOAL

As a manufacturer of high-efficiency equipment for the energy sector, our company always strives to achieve its environmental goals in improving energy efficiency globally. It is part of our large investment in technology that allows us to manufacture high-performance equipment such as Transformers for Solar Inverters (Photovoltaic) with K-Factor Elevator design for the renewable energy industries. All in order to be able to manufacture our valuable customers their equipment in an average of 90 days, and with the most competitive prices in the market so that we can all continue working together for the improvement of our planet.

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Photovoltaic Solar Transformers

STEP-UP Design

We manufacture from 500kVA up to 315MVA. These are typically designed for solar applications which operate at the fundamental frequency of an alternating system. They are designed for one or more output windings connected to the inverters’ load. These have a STEP-UP design in which the transformers’ primary voltage is at the low voltage side and the secondary is at the medium voltage side. These transformers are designed according to any specific customer requirements regarding voltage, power, low losses, sound level, operating conditions and more. Special attention is given to environmental impact and safety issues.

Inverters generate harmonic distortion, which can affect transformers negatively. Harmonics, or frequencies that are multiples of the fundamental frequency, cause increased losses in transformers, leading to potential overheating, reduced efficiency, and premature failure. Mitigation techniques include using our high K-Factor transformers.

A high K-Factor transformer is designed to handle loads with significant harmonic content, specifically addressing issues like overheating caused by non-linear loads. These transformers are engineered to withstand the additional heating effects of harmonics without overheating or derating, which can lead to premature failure in standard transformers.

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Pad Mounted Transformer
3-Phase

The safety and security of tamper-proof pad mount transformers make them the ideal choice for installations which may be accessible by the public, or any situation where underground cabling is preferred. tamper-proof, compartmentalized, liquid-filled, pad-mounted (or pad mount for short) transformers are all-in-one units designed, built, and tested in accordance with the highest industry standards and can be customized with over-current protection, and sectionalized switching to give you maximum control over your distribution system.
Product Scope:
30 kVA – 10,000 kVA
Up to 35,000v

Standard specs:   • Type II non-PCB mineral oil (ONAN) • High-grade silicon-steel core • Aluminum windings • Pad-lockable door handle • No-load tap changer • Impedance 5.75 % (±7.5%) • Reinforced carbon steel tank • Lifting lugs • Externally clamped high- and low-voltage bushings • Pressure relief valve • Pressure vacuum gauge • Liquid temp gauge • Liquid level gauge • Drain and sample valve • Schrader valve • Ground pads/lugs • Nitrogen blanket • 65 degree C rise

Optional Features:   • Environmentally friendly, high fire-point FR3 oil (KNAN) • Copper windings • Key interlock provisions • Stainless steel tank • Gauges with contacts • Externally accessible drain and sample valve • External gauge package • Lid-mounted pressure relief device • Sudden pressure relay • Lightning arresters • Viewing windows in cabinet • 55/65 degree C rise • Step-up solar and wind duty design • Electrostatic shielding • K-rated design

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Substation Transformer

These liquid-filled distribution substation, and power-class substation transformers are designed, built, and tested in accordance with the highest industry standards including NEMA, ANSI C.57, DOE, and IEEE as applicable. With a range of customizable features, substations can be configured to maximize performance, minimize potential arc flash exposure, and address environmental concerns. All designs can be supplied with full or partial length air terminal chambers to make installation easy.
Product Scope:
300 kVA – 30,000 kVA base Up to 115kV

Standard Features • Type II non-PCB mineral oil (ONAN) • High-grade silicon-steel core • Aluminum windings (distribution class) • On-load tap changer • Reinforced carbon steel tank • Lifting lugs • Externally clamped high- and low-voltage bushings • Pressure relief valve • Pressure vacuum gauge • Liquid temp gauge • Liquid level gauge • Drain and sample valve • Schrader valve • Ground pads/lugs • Nitrogen blanket • 65 degree C rise

Optional Features • Environmentally friendly, high fire-point FR3 oil (KNAN) • Copper windings • On-load tap changer • Stainless steel tank • Gauges with contacts • Auxiliary control cabinet • Winding temperature indicator • Fan package (ONAN/ONAF) • Lid-mounted pressure relief device • Sudden pressure relay • Lightning arresters • 55/65 degree C rise • Step-up solar and wind duty design • Electrostatic shielding • K-rated design • Primary load-interrupter switch

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Power Transformer

Our 10 MVA 33KV OLTC transformer was delivered to Zimbabwe in 2019, this 10000 KVA transformer was supposed to be used in a substation for mining company, but the 33KV line voltage from the power grid is not stable, it jumps from 26 to 40kv frequently, so we designed this 33KV to 33KV OLTC transformer to regulate the primary voltage to get a stable 33KV output voltage.

We guarantee that each one of our delivered transformers has passed the most strictly test and we remained 0 fault rate record for more than 10 years so far, our oil immersed power transformer is designed in accordance with IEC, ANSI and other major international standards.

Product Scope:

Product: Oil Cooled Power Transformer Rated Power: Up to 200 MVA
Primary Voltage: Up to 230 KV

Core:

The core of the 10 MVA power transformer is made of high-quality grain orientated cold rolled silicon steel sheet, the silicon steel sheet is cut by advanced shear line and the burs is controlled within 0.02mm.

Winding:

The winding of 10000 KVA transformers adopts high-grade oxygen free copper.
The most strictly quality control has been conducted for each of the transformers during the manufacturing process.

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Distribution Transformer

These 150 KVA 3 phase transformers were delivered to Pakistan in 2019, the rated power of the transformer is 150 KVA. This 150 KVA Step Down transformer 11kv to 0.4kv, the primary voltage is 11kv, the secondary voltage is 0.4kv. We can supply both 150 KVA Step Up and Step-Down transformer, the cooling is ONAN. Our 150 KVA distribution transformer was designed with advanced technology and adopts high quality material and components which result in reliable quality and long operation time.
We ensured each one of our delivered transformers had passed the full acceptance test and we remain 0 fault rate record for more than 10 years so far, oil immersed power transformer is designed in accordance with IEC, ANSI and other major international standards.

Product Scope:

Product: Oil Immersed distribution Transformer
Rated Power: Up to 5000 KVA
Primary Voltage: Up to 35 KV

Core:

1. The core is made of high-permeable grain-orientated top quality cold-rolled silicon sheet
2. The silicon sheet fabrication adopts “no-upper yoke lapped’ technology and all lapped joints of the silicon sheet are 45 full-miters.

Winding:

1. Our windings are made of high quality copper.
2. Both High Voltage (HV) and Low Voltage (LV) windings are done using Coil Winding Machines. The Copper or Aluminum strips/wires used in winding are meticulously selected for its quality to give the best output. The Copper or Aluminum strips/wires are paper covered and act as insulators.

Oil Tank:

1. The oil tank is a transformer housing containing the iron core, winding and transformer oil.
2. The corrugated tank structure is fully sealed, and the corrugated will expand and compress with the increase of oil, isolating the transformer from the atmosphere and preventing oil deterioration and moisture. After oil removal, rust removal and phosphating treatment, the surface of corrugated oil tank is coated with rainproof paint. Moisture and salt spray.

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Dry Type Transformer

Cast coil transformers are the ideal solution for voltage distribution in harsh environments with airborne dust or high humidity. The windings are vacuum cast inside a solid block of epoxy resin which provides the highest degree of protection to the windings. These are designed, built, and tested in accordance with the highest industry standards including NEMA, ANSI C.57, DOE, and IEEE as applicable. They are engineered for both indoor and outdoor applications and need minimal maintenance due to their rugged construction. Cast coil transformers use environmentally safe insulation systems that don’t require fireproof vaults and catch basins that liquid filled transformers need. This allows the installation of cast coil transformers inside buildings close to the load, improving overall system regulation and reducing costly secondary line losses. The fiberglass reinforced construction of these units also provides higher short circuit strength and impulse voltage strength.

Product Scope:
100 kVA – 10,000 kVA
Up to 46kV (250kV BIL)

Standard specs: • Self-Cooled (ANN/AN) • 60Hz • Aluminum (Al) Windings • 180°C (115°C Temperature Rise) • Primary taps +/-2 x 2.5% • Terminal Bus Stubs Suitable for Cables • NEMA 1 Indoor • ANSI 61 Grey Powder Coat

Optional upgrades • Forced Air Cooled (AFN/AF) • 50/60Hz • Copper (Cu) Windings • 80°C Rise Available • Optional Unit-Substation or Pad mount Configuration • NEMA 2, 3R, 4, 4X C 12 • Buss Coordination with switchgear (Unit-Substation configuration) • Dial (Analog) or Digital Thermometers • Neutral Ground Resistors (NGR) and Monitoring • Anti-Condensation Strip Heaters • Switching surge mitigating R.C. Snubber • Ground Fault Protection Relays (GFR) • Anti-Vibration mounting to reduce transformer hum (sound level) • Provision for Seismic mounting or complete Seismic Snubbers and Restraints • Distribution, Intermediate or Station Class Surge Arresters • Provision for Buss Duct Entry • Fully Insulated Buss • Mimic Buss • Kirk-Key Interlock

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Pole Mounted Transformer

Liquid-filled pole mount transformers are designed, built, and tested in accordance with all applicable IEEE standards. Each unit is built to comply with the latest DOE efficiency regulations. They are ideal for utility applications requiring single-phase and three-phase distribution.
Product Scope:
5 kVA–333 kVA
High voltages: 2,400 to 34,500 (up to 150 kV BIL)
Low voltages: 120/240, 240/480, 277

Standard specs: • Type II non-PCB mineral oil (ONAN) • 65°C temp rise • Mild steel tank • Corrosion resistant paint finish • Lift points • LV side-mounted bushings • HV cover-mounted bushings • All standard tap configurations available • Grounding provisions • Anodized aluminum or stainless steel nameplate • ANSI 70 Gray paint color • Aluminum windings • Hanger brackets • Arrester mounting pads • Cover ground strap

Optional Features: • HV taps (external lever handle or hook stick handle) • Dual voltage • Pressure relief device • Internal fuses • Switches • Secondary circuit breaker • Lightning arresters • Environmentally friendly, high fire-point FR3 oil • IFD (Internal Fault Detector) • Copper windings • Stainless steel tank

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1-Phase

Single-phase pad mount transformers are designed to bring underground 1-phase power to homes, and commercial buildings from utility feeds. These units are perfect for urban public locations due to their tamper-proof and low profile design. These tamper-proof, liquid-filled, single-phase pad-mounted (or pad mount for short) transformers are designed, built, and tested in accordance with the highest industry standards. They feature a clamshell cabinet design allowing easy access in a compact footprint.
Product Scope:
5 kVA – 250 kVA
Up to 19.9 kV (150 kV BIL)

Standard specs: • Type II non-PCB mineral oil (ONAN) • High-grade silicon-steel core • Aluminum windings • Pad-lockable door handle • DOE 2016 efficiency • Reinforced carbon steel tank • Lifting lugs • Pressure relief valve • Nitrogen blanket • 65 degree C rise • Bayonet fuse with drip shield • Dead front well and insert HV bushings • Paddle/spade or lug-connector type LV bushings

Optional specs: • Environmentally friendly, high fire-point FR3 oil (KNAN) • Copper windings • Stainless steel tank • High voltage taps • Dual voltage • Backup CL Fuse (internal) • On-Off High Voltage Switch • Removable Stud Bushing Wells

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Project Reference No. 20170411 – Albania

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Project Reference No. 201G020 – Vietnam

Brief intro: The 50MVA power transformer was exported to Vietnam in Aug 2019 for a steel plant’s substation.
Standard: IEC60076
Quantity: 1 Unit
Year of Manufacturing: 2019
Place of Delivery: Vietnam
Technical Specification of the 50MVA power transformer
Rated Power: 50000KVA
Primary voltage: 242KV
Secondary voltage 38.5KV
Vector Group: YNd11
Cooling: ONAF
Frequency: 50HZ
Phase: Three
Winding: Copper
Tapping: OLTC +9*1.78% at primary side
No load loss: 28kw
On load loss: 265kw

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