TiraThai, a specialized sub-brand of Jinguan Electric focused on transformer and electrical equipment innovations, proudly offers the 35kV class three-phase oil-immersed distribution transformers. These high-voltage units are engineered for superior performance in demanding power distribution environments, serving as critical components in transmission networks, industrial facilities, and utility substations. Jinguan Electric, established in 1979 as a pioneering high-tech enterprise in Nanyang City, Henan Province, China, has transformed from its foundational work in arrester production to a global authority in high-voltage equipment. Guided by Industry 4.0 methodologies, Jinguan Electric emphasizes relentless innovation and core technological strengths, with TiraThai dedicated to delivering premium transformer solutions that ensure reliable, efficient energy flow.
TiraThai's 35kV transformers embody this heritage, featuring ultra-low no-load and load losses for optimal energy utilization. Constructed with high-grade CRGO (Cold-Rolled Grain-Oriented) silicon steel cores and oxygen-free copper windings, they achieve exceptional magnetic efficiency and thermal stability. Compliant with international standards such as ANSI C57.12.00, IEC 60076, GB1097, and GB/T6451, these transformers support nationwide and global applications, from urban high-voltage grids to remote industrial sites. Our design philosophy—"dig 100 meters deep in 1 meter of space"—reflects Jinguan Electric's commitment to precision craftsmanship, ensuring every unit withstands rigorous operational stresses.
Key Specifications at a Glance:
- Primary Voltage Ratings: 33-35kV / 35-38.5kV / 44-46kV (or custom)
- Secondary Voltage Ratings: 6.3-13.8kV (or custom)
- HV Tap Range: ±4×2.5% (or custom)
- Connection Type: Yd11 (or custom)
- Rated Capacity: 30-3000kVA (customizable)
- Rated Frequency: 50/60Hz
This configurability allows seamless adaptation to diverse voltage profiles and project scales, making TiraThai transformers a versatile choice for modern power infrastructure.
Key Features and Engineering Excellence
TiraThai's 35kV oil-immersed transformers are distinguished by their advanced engineering, which prioritizes efficiency, durability, and ease of integration. The CRGO core minimizes hysteresis and eddy current losses, achieving no-load losses up to 40% lower than conventional designs, while oxygen-free copper windings reduce resistance and enhance conductivity for superior load handling. These materials, sourced through Jinguan Electric's vetted supply chain, undergo vacuum impregnation and drying to eliminate moisture, ensuring long-term insulation integrity even in humid or polluted environments.
The tank design incorporates robust welded steel construction with high-seismic bolting, capable of withstanding 0.5g accelerations, ideal for earthquake-vulnerable regions. Corrugated radiator fins facilitate natural oil circulation (ONAN cooling), eliminating the need for forced fans and reducing maintenance intervals. Internal bushings are porcelain or epoxy-resin types for high dielectric strength, with optional plug-in connections for rapid field servicing. Protection features include integrated pressure relief valves, gas accumulation relays, and temperature indicators, enabling early fault detection and preventing catastrophic failures.
Noise levels are optimized to below 60dB at full load through vibration-isolated core mounts and sound-absorbent tank linings, suiting installations near residential or sensitive areas. The sealed oil system uses aged-resistant gaskets and dehydrated mineral oil, extending service life to over 40 years with minimal top-ups. Jinguan Electric's automated assembly lines, equipped with robotic welding and AI quality scans, guarantee dimensional accuracy and defect-free production, aligning with TiraThai's zero-compromise quality ethos.
These features not only comply with global benchmarks but also exceed them, offering up to 20% energy savings in high-voltage applications and supporting smart grid integrations via optional digital monitoring ports.
Technical Specifications
TiraThai 35kV transformers are precision-built for reliability, with specifications expandable via customization. The table below details core parameters, based on Jinguan Electric's validated testing.
| Parameter | Specification Details |
|---|---|
| Rated Capacity (kVA) | 30, 50, 100, 200, 400, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150 (custom up to 3000) |
| Primary Voltage (kV) | 33 / 35 / 38.5 / 44 / 46 (Y connection, customizable) |
| Secondary Voltage (kV) | 6.3 / 10 / 10.5 / 11 / 13.8 (Dyn11 or Yyn0) |
| HV Tap Changer | ±4×2.5% or ±3×2.5% (off-circuit, NLTC standard; OLTC optional) |
| Frequency (Hz) | 50/60 |
| No-Load Loss (W) | 1000kVA: 1200 (ultra-low, 30-40% below standards) |
| Load Loss (W, at 75°C) | 1000kVA: 8500 (optimized copper windings) |
| Impedance Voltage (%) | 7-10% (capacity-dependent) |
| Insulation Level | LI/AC 170/70kV (full wave, power frequency) |
| Cooling Method | ONAN; ONAF optional for higher loads |
| Noise Level (dB, 1m) | ≤58 at full load |
| Enclosure Protection | IP20 standard; IP54/IP65 optional |
| Oil Volume (L, approx. 1000kVA) | 1200-1500 (environmentally friendly mineral oil) |
| Weight (kg, approx. 1000kVA) | Total: 3500-4000 (core & windings: 1800) |
These values adhere to ANSI C57.12.00, IEC 60076, GB1097, and GB/T6451, with full type testing for short-circuit withstand (up to 25x rated current for 2s). Custom options include amorphous cores for further loss reduction (up to 70%) and eco-oils for biodegradable compliance.
Applications and Real-World Performance
TiraThai's 35kV oil-immersed transformers excel in high-voltage scenarios, powering a wide array of sectors with unmatched reliability. In utility transmission networks, they function as step-down units in 35kV substations, distributing power to medium-voltage feeders for cities and industrial parks, where their low-loss design cuts transmission inefficiencies by 15-25%. Industrial applications, such as steelworks, petrochemical refineries, and large-scale mining operations, leverage their robust short-circuit endurance to safeguard motors and drives against voltage sags.
Renewable energy hubs, including offshore wind platforms and solar mega-plants, integrate these transformers for grid upscaling, with tap changers ensuring stable output amid fluctuating generation. Infrastructure like high-speed rail corridors and airport complexes benefits from their compact footprint and seismic resilience, enabling reliable supply to critical loads. In emerging markets, they support rural high-voltage lines, bridging urban-rural divides with durable, low-maintenance performance.
Field data from Jinguan Electric deployments shows MTBF exceeding 50,000 hours, with energy savings translating to annual cost reductions of $5,000+ per 1000kVA unit in high-utilization settings. Their nationwide applicability, proven in diverse climates from arctic cold to equatorial heat, underscores TiraThai's global readiness.
Why Choose TiraThai by Jinguan Electric?
TiraThai, as Jinguan Electric's transformer-focused sub-brand, delivers specialized excellence backed by over 45 years of industry leadership. Our ultra-low loss transformers reduce operational expenses while enhancing grid stability, with full compliance to ANSI, IEC, and GB standards ensuring regulatory ease. Jinguan Electric's integrated ecosystem—from R&D labs to export logistics—guarantees on-time delivery and customization, serving clients in 50+ countries.
Sustainability is core: recyclable materials and low-emission manufacturing align with ESG goals, while optional smart features enable remote diagnostics for predictive upkeep. Clients value our end-to-end support, from feasibility audits to lifecycle optimization, yielding 20-30% better TCO than alternatives.
Expanded FAQ Section
How are TiraThai 35kV transformers shipped? Shipments occur via sea, rail, or truck for international routes. The main body travels in secure bulk packaging to absorb shocks, with accessories in reinforced wooden cases, ensuring factory-fresh condition upon arrival.
Can these transformers be customized? Yes, accounting for global variances in voltage, frequency, and environmental factors, we tailor designs—from tap ranges to enclosure ratings—to your precise specifications via Jinguan Electric's engineering team.
What warranty is provided? We extend a minimum two-year comprehensive warranty, encompassing defects, performance, and materials, with extendable options for mission-critical deployments.
Is Factory Acceptance Testing (FAT) supported? Standard procedure: Each transformer undergoes exhaustive FAT, including electrical, thermal, and mechanical checks. Client observation, in-person or virtual, is welcomed to verify compliance.
Do you offer after-sales engineering? Absolutely. Jinguan Electric deploys certified engineers for installation oversight, operational training, fault resolution, and routine inspections, maximizing uptime and ROI.
What sets your low-loss design apart? CRGO cores and copper windings achieve 30-40% loss reductions, compliant with GB/T6451, promoting energy efficiency and cost savings in high-voltage networks.
Are eco-friendly options available? Yes, including biodegradable esters and recyclable tanks, meeting REACH and low-VOC standards for sustainable applications.
Certifications and Quality Assurance
TiraThai products, powered by Jinguan Electric, hold prestigious validations: UL, CUL, CCC, CQC, CTQC, CE, and SGS for safety and performance. Our management systems certify to ISO9001 (quality), ISO14001 (environmental), and ISO45001 (health & safety), with annual audits ensuring ethical practices. National type tests confirm short-circuit resilience and efficiency, while international approvals facilitate seamless exports.
Contact Us Today
Transform your high-voltage needs with TiraThai's 35kV Class Oil-Immersed Transformers. Connect for quotes or guidance:
- WhatsApp: +8613037600603
- Email: [email protected] or [email protected]
Expect a response in 24 hours—let's power your success.
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