حول Jiangsu Dinghong Power Co., Ltd.
The company prioritizes the promotion of its North American UL-certified series of high and low-voltage electrical switchgear, which is manufactured in accordance with international high-end manufacturing standards and meets the stringent requirements of overseas engineering projects. With its core strengths: safety, stability, superior quality, and broad adaptability, this series has become the company’s flagship product for expanding into the global high-end power market and entering the U.S. market. With proven experience in the integrated implementation of E-House prefabricated substations for U.S. projects, the company offers complete E-House containerized power distribution solutions. These solutions integrate high and low-voltage switchgear, transformers, monitoring systems, and cooling systems within prefabricated containers, meeting the rapid deployment and modular construction requirements of U.S., renewable energy power plants and commercial and industrial power distribution projects. Combined with a full range of transformers, containerized substations, and other complete equipment sets, the company has established a comprehensive power equipment product portfolio capable of fully meeting the standardized and customized supply needs of power engineering projects of all sizes, both domestically and internationally.
The company maintains a comprehensive and standardized management system and has obtained the three authoritative certifications: ISO 9001 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System. Leveraging an ERP digital management system, the company has established closed-loop control across the entire procurement, production, processing, and delivery process. It has also implemented strict quality control standards, including a multi-level quality inspection process that covers incoming material inspection, control of critical production steps, and comprehensive testing of finished products before shipment. This ensures the quality, safety, and stability of every batch of equipment from the source. Product design and manufacturing processes comply with relevant U.S. electrical standards and meet North American project acceptance requirements.
Leveraging the geographical advantages of Jiangsu First Power Co., Ltd. in Suzhou and its established overseas channel resources, the two companies collaborate through business synergy, complementary resources, and coordinated development. They specialize in serving the Americas market, particularly the U.S., while also covering market expansion, business coordination, order fulfillment, and after-sales support in overseas regions such as the Middle East and Southeast Asia. With its extensive product portfolio, rigorous production control system, and well-established dual domestic and international market presence, Jiangsu Dinghong Electric continues to provide customers across various industries with one-stop, high-quality power transmission and distribution solutions, including U.S. E-House prefabricated modules, steadily enhancing the brand’s comprehensive competitiveness and industry influence in the domestic and international power equipment sectors, particularly in the North American power market.
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Compact substation
الموديل: FPCS
المعلمات: Application: Solar PV Power Plants
Phase: Three Phase
Rated Capacity: 500 kVA – 5,000 kVA per transformer
Medium Voltage: 10 kV / 11 kV / 13.8 kV / 20 kV / 22 kV / 24 kV / 33 kV / 35 kV, customized
Low Voltage: 0.4 kV / 0.69 kV / 0.8 kV / Customized
Frequency: 50 Hz / 60 Hz
Transformer Type: Oil-Immersed Step-Up Transformer
Cooling: ONAN / ONAF, according to transformer rating
MV Switchgear: RMU / Load-Break Switchgear / Vacuum Circuit Breaker Switchgear
LV Switchgear: ACB / MCCB / Main LV Distribution Panel
Protection: Fuse Protection / Circuit Breaker Protection / Transformer Protection / Overcurrent & Ground-Fault Protection
Control & Monitoring: Local Control / Remote Monitoring / SCADA Interface, optional
Container Protection: IP54 or higher
External Equipment Protection: Up to IP65, according to configuration
Ambient Temperature: -25°C to +55°C
Altitude: Up to 1,000 m standard; higher altitude available upon request
Relative Humidity: ≤95%, non-condensing
Installation: Outdoor
Cooling & Ventilation: Natural ventilation / Forced ventilation, according to configuration
Seismic Requirement: Customized according to project requirements
Cable Entry: Bottom / Side / Customized
Transformer Connection: According to PV inverter output and grid requirements
Applicable Standards: IEC / IEEE / ANSI and applicable local grid requirements
Isolation transformer
الموديل: FPIT
المعلمات: Phase: Single Phase / Three Phase
Rated Capacity: 1 kVA – 5,000 kVA
Primary Voltage: Up to 15 kV / Customized
Secondary Voltage: 120 V – 690 V / Customized
Frequency: 50 / 60 Hz
Cooling Method: AN / AF
Insulation Class: Class F / Class H
Temperature Rise: 80 K / 115 K / Customized
Connection: Delta / Wye / Zig-Zag / Customized
Vector Group: Customized according to application
Tap Range: ±2 × 2.5% / Customized
Enclosure: Indoor / Outdoor
Protection Degree: IP00 / IP21 / IP23 / Customized
Installation: Floor-Mounted
Applicable Standards: IEC / IEEE / ANSI / UL, according to market requirements
Medium Voltage RMU Switchgear
الموديل: FP-RMU-38
المعلمات: #### Common for Both Units
Rated voltage 38kV; rated frequency 50/60Hz; rated current 600A; 1-minute power frequency withstand voltage 80kV; rated lightning impulse withstand voltage 150kV peak; rated short-circuit making current 52kA peak; rated short-time withstand current (main circuit) 25kA for 4s; rated peak withstand current 52kAp; electrical endurance capability class E2.
Minimum SF₆ gas pressure at 20℃: 0.02MPa (relative); rated SF₆ gas pressure at 20℃: 0.04MPa (relative).
Outer enclosure protection degree: IP4X, NEMA 1/2/3R; gas tank protection degree: IP67.
#### Load Break Switch Unit
Mechanical life: 5000 operations for load switch, 3000 operations for earthing switch.
#### Breaker Unit
Rated short-circuit breaking current 25kA; mechanical life: 10000 operations for VCB, 2000 operations for 3-position switch.
E-hosue
الموديل: FP-EH
المعلمات: - Enclosure dimensions: Customized based on internal electrical equipment layout; standard container‑type footprint for road‑transport compatibility
- Enclosure protection class: NEMA 3R / NEMA 4 / IP54‑IP55
- Applicable voltage class: LV up to 600V, MV 5kV‑38kV
- Internal equipment compatibility: Metal‑clad switchgear, GIS / C‑GIS, MCC, distribution transformers, protection relays, UPS & DC auxiliary power system
- Environmental operating temperature: ‑40 ℃ ~ +55 ℃
- Auxiliary systems: Integrated air‑conditioning / forced ventilation, interior lighting, grounding busbar, fire detection & alarm system, access control, cable entry glands
- Factory acceptance: Complete FAT (Factory Acceptance Test) prior to shipment
- Transport mode: Full‑unit hoisting and road / sea shipping
38kV Metal-Clad Switchgear
الموديل: FP-MCS 2H (2-high) FP-MCS 1H (1-high)
المعلمات: Rated voltage 38kV; rated frequency 60Hz; rated current 1200/2000/3000A; 1-minute power frequency withstand voltage (phase-to-phase and phase-to-earth) 80kV; rated lightning impulse withstand voltage (phase-to-phase and phase-to-earth) 150kV; rated short-time withstand current 31.5/40kA; rated peak withstand current 82/104kAp; rated short-circuit duration 2s; enclosure protection NEMA 1/2; 0.5s internal arc rating 40kA; switchgear width 42 inches.
27kV Metal-Clad Switchgear
الموديل: FP-MCS 2H AR (2-high added LV comp)
المعلمات: Rated voltage 27kV; rated frequency 60Hz; rated current 1200/2000A, 2H AR rating up to 2500A; 1-minute power frequency withstand voltage (phase-to-phase and phase-to-earth) 60kV; rated lightning impulse withstand voltage (phase-to-phase and phase-to-earth) 125kV; rated short-time withstand current 31.5/40kA; rated peak withstand current 82/104kAp; rated short-circuit duration 2s; enclosure protection NEMA 1/2; 0.5s internal arc rating 40kA; switchgear width 36 inches.
38kV C-GIS Switchgear
الموديل: FP-C-GIS
المعلمات: - Rated voltage: 38 kV; rated frequency: 60 Hz
- Rated current: 2500 A – 4000 A
- Short-time withstand current: 40 kA (4 s); peak withstand current: 100 kA
- Lightning impulse withstand: 150 kV; power frequency withstand: 80 kV
- Insulation medium: SF₆ / N₂ gas mixture; enclosure protection: IP6X
UL 845 Motor Control Center MCC
الموديل: FP-MCC
المعلمات: - Rated voltage: up to 600 V AC, 50 / 60 Hz
- Main bus current: 600 A – 3000 A; unit current: 0.5 A – 800 A
- Short-circuit current rating (SCCR): up to 65 kA / 100 kA rms
- Standards: UL 845, NEMA ICS 18; enclosure protection: NEMA 1 / 2 / 4 / 4X
UL Listed Medium Voltage Switchgear
الموديل: FP-MVSG-38
المعلمات: - Voltage range: 5 kV – 38 kV; rated current: 1200 A – 4000 A
- Short-time withstand current: 31.5 kA / 40 kA (2 s); peak withstand current: 82 kA / 104 kA
- 1-min power frequency withstand voltage: 36 kV – 80 kV; lightning impulse withstand voltage: 95 kV – 150 kV
- Standards: UL 347, ANSI/IEEE C37.20.2; enclosure protection: NEMA 1 / 2
UL 508A
الموديل: FP-LCP
المعلمات: - Applicable standard: UL 508A
- Rated voltage: ≤ 600V AC, 50/60Hz
- Main busbar current: 100A – 600A
- Panel SCCR (Short Circuit Current Rating): Up to 100kA rms @ 480V
- Main busbar short-time withstand: 150kA rms / 1s
- Power frequency withstand voltage: 2200V AC/1min (power circuit); 1000V AC/1min (control circuit)
- Insulation resistance: ≥ 100MΩ @ 500V DC
- Standard operating temperature: -10°C to +40°C
- Enclosure rating: NEMA 1 / 2 / 3R / 4 / 4X (optional)
- Busbar material: Tin-plated electrolytic copper
- Marking requirement: Nameplate marked with rated parameters, SCCR value and UL certification mark
UL 67
الموديل: FP-LPB
المعلمات: 1. **Series Classification & Rated Current**
The product line is divided into three series with graded current capacities, covering 100AF to 1200AF frame sizes:
- **LPB-1** (100AF / 150AF / 250AF): Main breaker ratings range from 15–100A, 40–150A and 150–250A respectively, with matching main lug models LPB-125, LPB-150 and LPB-250. Branch circuit rating is 15–100A.
- **LPB-2** (400AF / 600AF): Main breaker ratings are 250–400A and 500/600A, with main lug models LPB-400 and LPB-800D. Branch circuit rating is 15–250A.
- **LPB-3** (800AF / 1200AF): Main breaker ratings range from 400–800A and 800–1200A, with main lug models LPB-800D and LPB-1200. Branch circuit ratings cover 15–800A and 15–1200A.
2. **Short Circuit Withstand Performance**
- At 240V fully rated condition: All series deliver a short circuit current rating of 50–100 kA rms.
- At 480V condition: LPB-1 provides 25–65 kA rms, while LPB-2 and LPB-3 achieve 25–100 kA rms.
3. **Busbar & Enclosure Design**
- Main busbar type: LPB-1 and LPB-2 adopt a rail-type busbar structure; LPB-3 is configured with bolt-on busbar to support higher current capacity.
- Enclosure protection: Available in NEMA Type 1 (indoor), Type 2 (indoor) and Type 3R (indoor/outdoor) to adapt to different installation environments.
4. **Enclosure Dimensions**
All dimensions are listed in inch (with mm equivalent):
| Series | Width | Height Options | Depth |
|--------|-------|----------------|-------|
| LPB-1 | 24" (610mm) | 45" (1143mm), 60" (1524mm), 75" (1905mm) | 8" (204mm) |
| LPB-2 | 33" (839mm) | 60" (1524mm), 75" (1905mm), 90" (2286mm) | 10" (254mm) |
| LPB-3 | 28" (711.2mm), 36" (915mm), 40" (1016mm) | 75" (1905mm), 90" (2286mm) | 16" (407mm) |
5. **Compliance Standard**
The full LPB series conforms to UL 67 standard, satisfying the safety and performance requirements for low-voltage panelboards in the North American market.
UL 1558
الموديل: FP-LSG
المعلمات: 1. **Frame Types & ACB Ratings**
The product line includes three frame sizes with graded air circuit breaker (ACB) frame current ratings:
- **LSG-4**: 600A, 1000A, 1200A, 1600A
- **LSG-2**: 800A, 1000A, 1200A, 1600A, 2000A, 2500A, 3200A
- **LSG-1**: 3200A, 4000A, 5000A, 6000A
2. **Busbar Current Capacity**
- Horizontal busbar ampacity is uniform across all series, reaching up to 6000 A.
- Vertical busbar capacity scales with frame size: up to 1600 A for LSG-4, up to 4000 A for LSG-2, and up to 6000 A for LSG-1.
3. **Basic Electrical Ratings**
- Rated voltage: 254 V / 508 V / 635 V
- Rated frequency: 60 Hz
- AC power frequency withstand voltage: 2.2 kV for 1 minute
- Arc resistance performance: Type 2B, rated 100 kA / 0.5 second
4. **Short-Circuit Withstand Capability**
- Horizontal busbar short-circuit rating: 150 kA / 1 s for all three models.
- Vertical busbar short-circuit ratings (symmetrical / peak):
- LSG-4: 65 kA / 149.5 kA
- LSG-2: 85 kA / 195.5 kA
- LSG-1: 100 kA / 230 kA
5. **Dimensions & Configuration**
- Enclosure dimensions (W × D × H, inches):
- LSG-4: 26 × 70 × 90
- LSG-2: 36 × 80 × 90
- LSG-1: 48 × 80 × 90
- Number of circuit breakers per panel: 4 units for LSG-4, 2 units for LSG-2, and 1 unit for LSG-1.
6. **Applicable Standards**
The full series complies with IEEE C37.20.1, UL 1558, IEEE C37.20.7 and ANSI C37.51, fully meeting North American low-voltage switchgear specifications.
UL 891
الموديل: FP-LSB
المعلمات: 1. **Model Range & Access Configurations**
The product portfolio consists of four models with differentiated access designs. FP-LSB1-I and FP-LSB1-G provide mainly front access; FP-LSB2-I is designed for rear-only access; FP-LSB2-G supports both front and rear access for flexible operation and maintenance.
2. **Current Ratings of Switching Devices**
For main circuit devices, the ACB rating covers 800–4000 A for the LSB1 series and 800–6000 A for the LSB2 series; the main MCCB is rated 800–1200 A and is only available on the FP-LSB1-I model. For feeder circuit devices, the ACB follows the same rating range as the main circuit, while feeder MCCBs cover 800–1200 A on FP-LSB1-I, and 100–1200 A on both FP-LSB1-G and FP-LSB2-G.
3. **Electrical Performance**
All models deliver a short-circuit withstand current of up to 100 kA at 480 V. The main busbar ampacity (lug type) reaches up to 4000 A for the LSB1 series and up to 6000 A for the LSB2 series. The rated operating voltage for the full product line is up to 480 V.
4. **Installation Flexibility**
All configurations support both top and bottom cable entry, adapting to various on-site wiring requirements.
5. **Enclosure Width Specifications**
For MCCB frames (800–1200AF), the enclosure width is 26 inches for FP-LSB1-I, and 42/50 inches for FP-LSB1-G and FP-LSB2-G. For ACB_D frames (800–1600AF), the width measures 26 inches for FP-LSB1-I, 42/50 inches for FP-LSB1-G, 32 inches for FP-LSB2-I, and 42/50 inches for FP-LSB2-G.
35 KV OIL-IMMERSED TRANSFORMER
الموديل: S-800/35
المعلمات: 1. **Model & Rated Capacity**
This S-series 35 kV oil-immersed transformer covers 18 standard capacity ratings from 800 kVA up to 40,000 kVA, including 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000, 6300, 8000, 10000, 12500, 16000, 20000, 25000, 31500 and 40000 kVA.
2. **Voltage Configuration & Connection**
- High voltage side: 35 kV base voltage with flexible tapping ranges: 35±5% for 800–2500 kVA units, 35±5% / 38±5% for 3150–5000 kVA units, and 35±2×2.5% / 38±2×2.5% for 6300–40000 kVA units.
- Low voltage side: Multiple output options available, including 10.5 kV, 6.3 kV, 3.15 kV for lower capacity models, and 11 kV, 10.5 kV, 6.6 kV, 6.3 kV, 3.3 kV, 3.15 kV for higher capacity models.
- Connection group: Standard Yd11 vector group for all models.
3. **Loss Performance**
- No-load loss: Ranges from 1.23 kW (800 kVA) to 28.8 kW (40,000 kVA), scaling proportionally with rated capacity.
- Load loss: Ranges from 9.9 kW (800 kVA) to 155.25 kW (40,000 kVA).
4. **Electrical Characteristics**
- No-load current: Gradually decreases from 0.9% at 800 kVA to 0.36% at 25,000–31,500 kVA, with a slight increase to 0.48% at the 40,000 kVA rating.
- Impedance voltage: Stepwise design matching capacity grades: 6.5% for 800–2500 kVA, 7.0% for 3150–5000 kVA, 7.5% for 6300–10,000 kVA, and 8.0% for 12,500–40,000 kVA.
5. **Weight Specifications (tonnes)**
- Oil weight: 0.88 t to 7.78 t
- Total weight: 3.83 t to 46.9 t
- Top-up oil weight: 0.25 t to 2.48 t
- Transport weight: 3.56 t to 38.5 t
Single Phase Pole Mounted Transformer
الموديل: FP-SPT-15
المعلمات: 1. **Basic Specifications**
- Rated capacity: 7 standard ratings from 15 kVA to 167 kVA, including 15, 25, 37.5, 50, 75, 100 and 167 kVA.
- High voltage options: Two voltage levels are available — 7.97 kV with a tapping range of +1/-3×2.5%, and 19.92 kV with a tapping range of +0/-4×2.5%.
- Low voltage: Standard 120-240V dual-voltage output, adapted to North American residential and commercial power distribution scenarios.
2. **Loss Performance**
- No-load loss: Ranges from 55 W (15 kVA) to 266 W (167 kVA), maintaining low excitation loss across all capacity grades.
- Full-load loss: Ranges from 140 W (15 kVA) to 1400 W (167 kVA), with values scaling proportionally with rated capacity.
3. **Dimensional Parameters**
Overall dimensions are defined by five key measurements (A, B, C, D, E) in millimeters. For the 7.97 kV series, dimensions range from 1055×530×600×410×286 mm (15 kVA) to 1450×900×950×660×591 mm (167 kVA). The 19.92 kV series follows a similar size progression, with slightly adjusted values to accommodate higher voltage insulation requirements.
4. **Weight Specifications**
- Oil weight: Ranges from 51 kg (15 kVA, 7.97 kV) to 205 kg (167 kVA, 19.92 kV).
- Total weight: Ranges from 176 kg (15 kVA, 7.97 kV) to 784 kg (167 kVA, 19.92 kV). Higher voltage ratings correspond to moderately higher weight due to additional insulation structure.
DRY TYPE TRANSFORMER
الموديل: FPSC-B
المعلمات: 1. **Rated Capacity**
Covers 20 standard ratings from 30 kVA to 4000 kVA: 30, 50, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150 and 4000 kVA.
2. **Voltage & Connection Configuration**
- High voltage side: Available in 6 kV, 6.3 kV, 6.6 kV, 10 kV, 10.5 kV and 11 kV.
- Low voltage side: Standard 0.4 kV.
- Voltage tapping ranges: Two options — ±2×2.5% / ±5%, and ±5/±2×2.5%.
- Connection symbols: Dyn11 and Ynyn0.
3. **Loss Performance**
- No-load loss: Ranges from 0.14 kW (30 kVA) to 4.3 kW (4000 kVA), with values decreasing proportionally as capacity rating increases.
- Load loss (Class B 155°C insulation system, referenced to 120°C): Ranges from 0.71 kW (30 kVA) to 27 kW (4000 kVA), scaling with rated capacity.
4. **Electrical Specifications**
- No-load current: Gradually drops from 2% at 30 kVA to 0.6% at 4000 kVA.
- Short-circuit impedance: 4% for units up to 630 kVA; 6% for units from 800 kVA to 4000 kVA.
5. **Weight**
Total product weight ranges from 270 kg for the 30 kVA model to 6300 kg for the 4000 kVA model, increasing in line with rated capacity.
Three Phase Pad Mounted Transformer
الموديل: FP-PM-75
المعلمات: 1. **Rated Capacity**
Covers 11 standard ratings from 75 kVA to 2500 kVA: 75, 112.5, 150, 225, 300, 500, 750, 1000, 1500, 2000 and 2500 kVA.
2. **Voltage Configuration**
- High voltage side: Supports three voltage levels of 35 kV, 25 kV and 15 kV, adaptable to different tiers of transmission and distribution networks.
- Low voltage side: Covers mainstream distribution voltages in the North American market, including 240V, 480V, as well as three-phase wye configurations of 480Y/277V and 600Y/347V, compatible with various application scenarios and wiring requirements.
3. **Efficiency Performance**
- Compliant with U.S. DOE (2016) efficiency standard: The full series delivers an efficiency above 99%, which gradually rises from 99.03% to 99.53% as rated capacity increases.
- Compliant with Canadian CSA (2023) efficiency standard: Efficiency ranges from 98.95% to 99.49%, meeting the energy efficiency entry requirements of the Canadian market.
110 KV-500 KV POWER TRANSFORMER
الموديل: FPPT2-120MVA-110/10.5 example：120 MVA, 110/10.5 kV Two-Winding Power Transformer
المعلمات: Transformer Technical Parameters
Rated Capacity: 6,300–120,000 kVA
Rated High Voltage: 110/112 kV
Tapping Range: ±2 × 2.5%
Rated Low Voltage: 6.3 / 6.6 / 10.5 / 11 kV
Vector Group: Ynd11
معرض الشركة
الشهادات والجوائز
قصص النجاح
Power Utility
Ensure stable power supply for regional power grid
Altitude dusty environment with high reliability
Aerospace & Space Technology
Stable and Reliable Power Supply
Improved Power Quality
Reduced Energy Losses
Enhanced System Reliability
Improved Operational Efficiency
Long-Term Stable Operation
High Efficiency
Low No-Load and Load Losses
High Short-Circuit Withstand Capability
Data Center
Stable power supply and reliable operation
High efficiency, low loss, compact structure
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