- Salt Spray, Mold, Dust, and Shock Resistance: The transformer body is coated with TW32-4 silicone-based anti-corrosion paint, and the shell base features rigid shock-resistant connections.
- Product Diversity: Includes single-phase, three-phase, combination three-phase transformers, and offshore platform transformers.
- High-Voltage Windings: Available in both epoxy casting and VPI processes; small-capacity low-voltage transformers use combined windings for enhanced mechanical strength.
- DuPont Nomex® Insulation System: Excellent fire resistance and high insulation class.
- Full Marine Classification Certification: Certified by leading classification societies, including CCS, ABS, BV, DNVGL, LR, KR, RINA, NK, and others.
Why CEEG?
CEEG LV/MV Marine Transformers combine robust mechanical design with advanced insulation technology to power the world's vessels. From commercial ships to offshore platforms, our units offer versatile configurations (including Cast Resin and VPI) protected by DuPont Nomex® insulation and TW32-4 anti-corrosion coating. Designed for extreme resistance against salt spray, dust, and vibration, and certified by major global bodies like CCS, BV, DNVGL, ABS, LR, RINA, and NK, CEEG transformers guarantee safe, uninterrupted power distribution in the harshest marine conditions.
Technical Specifications
Feature | Specification | CEEG Advantage |
Rated Voltage | 0.11kV-13.8kV | Covers both 6.6kV/11kV propulsion and 400V/690V auxiliary systems . |
Capacity | 3kVA - 10,000kVA | Scalable for large commercial vessels and offshore platforms . |
Phase Shift | ±7.5° (for 24-pulse) | Native support for 12/24-pulse VFD systems to reduce harmonics . |
Insulation | Class H / Class F | Uses DuPont Nomex® paper; safe operation up to 220°C . |
Cooling | AN/AF | Natural cooling/forced air cooling |
Enclosure | IP22, 23, 44 | Enhanced protection against moisture and dust . |
CEEG Phase-Shifting Marine Rectifier Transformer
Since 2008, drawing on expertise from leading HV/LV inverter manufacturers such as Siemens, ABB, and Fuji, CEEG has developed 12-pulse and 24-pulse phase-shifting rectifier transformers, specifically designed for marine power propulsion systems. The primary operating principle involves a primary delta connection (D) and two secondary outputs—one in delta (d) and the other in star (Y)—to achieve a phase shift of ±7.5°, enabling effective 24-pulse rectification and significantly reducing harmonics.
Superior Performance of Nomex® Insulation
CEEG is a strategic partner of DuPont for Nomex® insulation paper. Nomex® offers a range of superior performance benefits:
It features a low dielectric constant and high dielectric strength. In dry-type transformers, it withstands higher electric field drops, making the insulation system more efficient.
Classified as Class C insulation, Nomex® can operate continuously at temperatures up to 220°C. With transformers designed for Class H insulation (operating at up to 180°C), Nomex® provides a significant heat tolerance margin.
It does not release toxic or corrosive gases at temperatures up to 750°C.
At 220°C, the LOI (Limiting Oxygen Index) is greater than 20.8%, meaning it will not support combustion.
In environments with 95% relative humidity, Nomex® maintains 90% of its dielectric strength as it would in fully dry conditions.
Operating Environment
Ambient temperature: -25°C to 45°C
Relative humidity ≤ 95%
Ship swinging angle ≤ 22.5°, tilt angle ≤ 15°
Conditions include condensation, oil mist, salt spray, and mould
Vibrations and impacts caused by transformers
Classification Society Certificate
Product Parameter for Reference
CSD Series Low Voltage Marine transformers (1kV) | |||||
Model | Rated Capacity (KVA) | No-Load Loss (W) | No-Load Current (%) | Load Loss (W 75℃) | Load Loss (%) |
CSD-300 | 300 | 1350 | 1.8 | 3900 | 4.0 |
CSD-400 | 400 | 1450 | 1.8 | 4800 | 4.0 |
CSD-500 | 500 | 1650 | 1.7 | 6210 | 4.0 |
CSD-630 | 630 | 1800 | 1.6 | 6700 | 4.0 |
CSD-800 | 800 | 1900 | 1.6 | 7240 | 4.5 |
CSD-1000 | 1000 | 2210 | 1.4 | 8530 | 6.0 |
CSD-1250 | 1250 | 2500 | 1.3 | 13800 | 4.5 |
CSD-1600 | 1600 | 2600 | 1.2 | 18000 | 4.5 |
CSD-2000 | 2000 | 2900 | 1.1 | 22000 | 6.0 |
Primary side rated voltage (V): 50Hz--400, 380 or others; 60Hz--450, 440 or others | |||||
CSCD Series Medium Voltage Marine Transformers (10kV) | |||||
Model | Rated Capacity (KVA) | No-Load Loss (W) | Load Loss (W 75℃) | No-Load Current (%) | Load Loss (%) |
CSCD-315/10 | 315 | 110 | 4080 | 1.8 | 4 |
CSCD-400/10 | 400 | 1220 | 4690 | 1.8 | 4 |
CSCD-500/10 | 500 | 1450 | 5740 | 1.8 | 4 |
CSCD-630/10 | 630 | 1620 | 7010 | 1.6 | 6 |
CSCD-800/10 | 800 | 1900 | 8180 | 1.6 | 6 |
CSCD-1000/10 | 1000 | 2210 | 9560 | 1.4 | 6 |
CSCD-1250/10 | 1250 | 2610 | 11400 | 1.4 | 6 |
CSCD-1600/10 | 1600 | 3060 | 13800 | 1.4 | 6 |
CSCD-2000/10 | 2000 | 4150 | 17000 | 1.2 | 6 |
CSCD-2500/10 | 2500 | 5000 | 20200 | 1.2 | 6 |
CSCD-3150/10 | 3150 | 5400 | 24000 | 1 | 6 |
CSCD-3500/10 | 3500 | 5800 | 28000 | 1 | 7.5 |
CSCD-4000/10 | 4000 | 6500 | 34000 | 0.8 | 8 |
CSCD-5000/10 | 5000 | 7800 | 42000 | 0.8 | 8 |
CSCD-6300/10 | 6300 | 8960 | 47000 | 0.6 | 8 |
CSCD-8000/10 | 8000 | 10220 | 53000 | 0.6 | 9 |
Primary rated voltage (kV): 11, 10.5, 10, 6.6, 6.3, 6, 3.3, 3 or others | |||||
