TiraThai, a specialized sub-brand of Jinguan Electric dedicated to transformer and electrical equipment innovations, proudly presents the D11 Series single-phase oil-immersed transformers. These compact, cylinder-sealed units are engineered as Complete Self-Protection (CSP) transformers, designed to safeguard against lightning strikes, short circuits, and operational faults while protecting downstream distribution lines. Conforming to ANSI standards, the D11 Series features a robust cylindrical tank structure with integrated grounding devices, lifting hooks, supporting lugs, high-voltage bushings on the cover, low-voltage bushings on the tank wall, eyebolts, and connecting terminals. Tap changers allow for precise voltage adjustments post-de-energization, ensuring adaptability in varying load conditions.
Jinguan Electric, founded in 1979 as a high-tech enterprise in Nanyang City, Henan Province, China, has progressed from specialized arrester manufacturing to a global frontrunner in high-voltage transmission and distribution solutions. Adopting Industry 4.0 principles, Jinguan Electric fosters core competitiveness through continuous innovation, with TiraThai serving as its focused brand for transformer technologies. This sub-brand channels Jinguan Electric's expertise into reliable, self-protecting transformers that excel in rural electrification, remote industrial feeds, and urban pole-mounted applications. Our D11 Series embodies the company's philosophy of "dig 100 meters deep in 1 meter of space," signifying unparalleled attention to detail in design and assembly for enduring performance.
Key Model Specifications:
- Series: D11 (CSP Type)
- Primary Voltage Ratings: 6kV, 13.2kV, 12.47kV (or Custom)
- Secondary Voltage Ratings: 120-240V / 240-480V / 347V / 600V (or Custom)
- Rated Capacity: 30-150kVA (or Custom)
- Rated Frequency: 50/60Hz
This configurability supports seamless integration into diverse global grids, from North American 60Hz systems to European 50Hz networks, with options for enhanced seismic resistance and environmental adaptations.
Key Features and Self-Protection Mechanisms
The TiraThai D11 Series distinguishes itself through its integrated self-protection features, making it a resilient choice for challenging environments. High-voltage bushings (one or two on the cover) are equipped with fuses for overcurrent protection, while arresters mounted on the tank wall—positioned near the bushings and linked via copper strips—divert surge energies from lightning or switching transients. A secondary breaker switch, located above the windings inside the tank, includes an operating handle, overload reset mechanism, and signal light for immediate fault indication and manual intervention.
Low-voltage bushings protrude from the tank wall for easy access, with grounding fixed at the X2 position to ensure safe earthing. In single-bushing configurations, one end connects through the high-voltage bushing, while the other grounds directly, simplifying installation on poles or pads. The core and windings mirror conventional oil-immersed designs for proven reliability, but the CSP architecture adds layers of autonomy: automatic disconnection during faults prevents cascading failures, extending the lifespan of connected lines and reducing outage durations.
Additional engineering highlights include vacuum-impregnated insulation to repel moisture, high-permeability silicon steel cores for low no-load losses (typically under 0.5% of rated capacity), and oxygen-free copper windings that minimize resistance and heat buildup. The cylindrical tank, fabricated from corrosion-resistant steel, features a hermetic seal with nitrile gaskets, eliminating the need for conservators and reducing leak risks. Jinguan Electric's automated production processes, including robotic winding and oil-filling under vacuum, ensure defect-free units, with optional epoxy-resin bushings for superior dielectric strength in polluted atmospheres.
These features collectively provide up to 99.9% uptime in surge-prone areas, aligning with TiraThai's mission to deliver maintenance-free reliability derived from Jinguan Electric's decades of high-voltage expertise.
Technical Specifications
TiraThai D11 Series transformers are precision-crafted for optimal performance, with specifications expandable through customization. The table below details core parameters, based on Jinguan Electric's rigorous testing and ANSI compliance.
| Parameter | Specification Details |
|---|---|
| Rated Capacity (kVA) | 30, 50, 75, 100, 150 (custom up to 250) |
| Primary Voltage (kV) | 6 / 12.47 / 13.2 (single-phase, customizable) |
| Secondary Voltage (V) | 120-240 / 240-480 / 347 / 600 (dual or single) |
| Frequency (Hz) | 50/60 |
| Connection Type | Single-phase (grounded or ungrounded) |
| Tap Changer | Off-circuit, ±2x2.5% or ±5% (NLTC standard) |
| No-Load Loss (W) | 30kVA: 150; 100kVA: 450 (low-loss core) |
| Load Loss (W, at 75°C) | 30kVA: 800; 100kVA: 2000 (copper windings) |
| Impedance (%) | 3-5% (capacity-dependent) |
| Insulation Class | Class A (105°C rise), oil-immersed |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Noise Level (dB, 1m) | ≤50 at full load |
| Enclosure Protection | IP20 standard; IP54 optional for outdoor use |
| Efficiency (%) | >98% at full load |
| Short-Circuit Withstand | 12kA / 2s (integrated fuses and breakers) |
| Weight (kg, approx. 100kVA) | Total: 800-1000 (core & windings: 400) |
| Dimensions (cm, approx. 100kVA) | Height: 120; Diameter: 80 (cylindrical tank) |
These values meet ANSI C57.12.00, IEEE C57.12.90, and equivalent international norms, with full routine testing for ratio, resistance, and dielectric integrity. Custom enhancements include amorphous cores for 70% loss reduction and smart sensors for remote monitoring.
Applications and Performance Benefits
TiraThai's D11 Series single-phase oil-immersed transformers are tailored for scenarios requiring compact, resilient power delivery. In rural and remote distribution lines, they mount easily on utility poles, stepping down medium voltages for agricultural pumps, small communities, or off-grid cabins, where CSP protection mitigates lightning-induced outages common in open terrains. Urban applications include underground vaults or pad-mounted setups for residential feeders, with low-noise designs minimizing disruptions in noise-sensitive neighborhoods.
Industrial uses span light manufacturing, oilfield substations, and telecom sites, where the self-protecting breakers isolate faults without manual intervention, ensuring continuous supply to critical loads. Renewable energy tie-ins, such as single-phase solar inverters or micro-hydro generators, benefit from customizable secondaries that match variable outputs, stabilizing local grids. In emerging markets, these transformers support electrification drives, powering schools and clinics with minimal infrastructure.
Operational advantages include rapid fault clearing (under 50ms via integrated relays), energy savings of 10-15% over non-CSP models, and a compact footprint reducing installation costs by 20%. Jinguan Electric's field deployments demonstrate MTBF over 100,000 hours, with proven resilience in diverse climates from coastal humidity to arid extremes.
Why Choose TiraThai by Jinguan Electric?
TiraThai, as Jinguan Electric's sub-brand for transformer specialization, offers unmatched value through CSP innovation and global adaptability. Inheriting 45+ years of expertise, our D11 Series delivers superior protection and efficiency, backed by ANSI/IEEE compliance and sustainable designs like biodegradable oils. Jinguan Electric's end-to-end ecosystem ensures customization, timely shipping, and lifecycle support, yielding 25% lower TCO than standard alternatives.
Expanded FAQ Section
How are TiraThai transformers shipped internationally? Shipments use sea, rail, or truck for global delivery. The cylindrical tank ships in bulk packaging for stability, with bushings and accessories in wooden cases to endure transit vibrations.
Can TiraThai products be customized? Yes, accommodating international variances in voltage, frequency, and protections, we tailor the D11 Series via Jinguan Electric's design team for perfect project alignment.
What warranty do you provide? We offer a minimum two-year comprehensive warranty, covering defects, performance, and materials, with extensions available for harsh-duty applications.
Is Factory Acceptance Testing (FAT) available? Standard for all units: Comprehensive FAT includes electrical, mechanical, and protection tests, with client witnessing options in-person or virtual.
Do you provide after-sales engineering support? Yes, Jinguan Electric assigns engineers for on-site installation, commissioning, training, and ongoing troubleshooting to ensure optimal operation.
What self-protection features are included? Integrated fuses, arresters, and breakers provide automatic isolation from surges, shorts, and overloads, enhancing line reliability without external relays.
Are mounting options flexible? Absolutely—pole, pad, or substation mounts, with seismic kits for high-risk areas and weatherproofing for outdoor exposure.
Certifications and Quality Assurance
TiraThai products, supplied by Jinguan Electric, feature national type tests: UL, CUL, CCC, CQC, CTQC, CE, SGS, and mandatory approvals. Our systems certify to ISO9001 (quality), ISO14001 (environment), and ISO45001 (health & safety), with annual audits upholding excellence. ANSI conformance ensures seamless U.S. and global integration.
Contact Us Today
Power your single-phase needs with TiraThai's D11 Series Single Phase Oil-Immersed Transformers. For inquiries or quotes:
- WhatsApp: +8613037600603
- Email: [email protected] or [email protected]
Our experts respond within 24 hours—let's protect your power.
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