10kV – 500kV Oil-Immersed & Dry-Type Units · Low-Loss CRGO Steel · Maschinenfabrik Reinhausen OLTC
Kingshark Energy exports heavy electrical power transformers manufactured by China's premier state-verified high-voltage substation manufacturing bases. We supply 10kV to 500kV oil-immersed generator step-up (GSU) transformers, transmission auto-transformers, cast resin dry-type distribution units, and pad-mounted substation transformers rated up to 360MVA.
Our power engineers conduct rigorous electrical engineering reviews on tender single-line diagrams (SLD). We verify impedance matching, short-circuit withstand levels, BIL (Basic Lightning Impulse Insulation Level), and harmonic tolerance (K-factor) to ensure seamless synchronization with overseas grid codes (IEC 60076, IEEE C57, ANSI).
Core laminations use high-permeability Cold-Rolled Grain-Oriented (CRGO) silicon steel (Baidu / Baosteel), precision step-lap stacked to minimize no-load losses and acoustic noise. We integrate world-class tap changers (Maschinenfabrik Reinhausen MR, Huaming) and multi-channel online DGA (Dissolved Gas Analysis) monitoring suites.
Every product is drawing-verified and audited to IEEE / IEC international norms.
Utility substation backbone units designed for extreme lightning impulse and seismic withstand. Bell-type tank, high-purity oxygen-free copper windings, and high-temperature insulation paper.
| Voltage Ratings | 110kV, 132kV, 138kV, 230kV, 345kV, 500kV |
| Power Capacity | 40MVA to 360MVA (Three-Phase / Single-Phase banks) |
| Cooling Methods | ONAN / ONAF / OFAF / ODAF |
| Tap Changer | MR (Maschinenfabrik Reinhausen) OLTC or On-Load Vacuum |
| Partial Discharge | < 10 pC at 1.5 Um/√3 |
Safe, non-flammable units for commercial high-rises, hospitals, data centers, and underground subways. High mechanical strength and zero risk of toxic gas emissions during fire.
| Capacity Range | 100 kVA – 4000 kVA |
| Primary / Secondary | 10kV / 11kV / 20kV / 33kV to 400V/415V/480V |
| Insulation Class | Class F (155°C) or Class H (180°C) |
| Enclosure Rating | IP00, IP20, IP23, IP31 with cooling fan |
| Certifications | C2, E2, F1 certified per IEC 60076-11 |
Dead-front, tamper-resistant outdoor substation combining MV load-break switches, backup current-limiting fuses, and distribution transformer in a single compact housing.
| Capacity Options | 300 kVA – 2500 kVA |
| High Voltage Side | 12.47kV, 13.8kV, 24.94kV, 34.5kV (Loop/Radial Feed) |
| Insulating Fluid | FR3 Natural Ester (Biodegradable) or Mineral Oil |
| Tank Construction | Stainless Steel Tank (Corrosion resistant) |
| Standard Compliance | IEEE C57.12.26, IEEE C57.12.28 (Tamper-Resistance) |
Advanced online dissolved gas analysis (DGA) monitoring H2, CO, CO2, CH4, C2H4, C2H2 and moisture in real time, preventing catastrophic dielectric failure.
| Detectable Gases | H2, CO, CO2, CH4, C2H2, C2H4, C2H6, H2O |
| Detection Limit | C2H2 < 0.5 ppm / H2 < 5 ppm |
| Sampling Interval | 1 Hour to 24 Hours programmable |
| Communication | IEC 61850, Modbus TCP, Optical Fiber Ethernet |
| Bushing Monitoring | High-voltage bushing Tan Delta & Capacitance |
Complete factory routine and type tests: Lightning impulse test (BIL up to 1550kV), induced overvoltage with partial discharge measurement (< 10pC), temperature rise test, sound level, and short-circuit withstand calculation.
Large units shipped filled with dry nitrogen and fitted with three-axis electronic impact recorders. Heavy-lift low-bed transport to Shanghai and Ningbo deep-water berths for ocean freight.
Direct evaluation by Dean and lead power engineers. We respond in under 4 hours.
