Underbridge Power Unit
2. Power Rating: 90kVA
3. Input Voltage & Frequency: 3 Phase 380V, 50/60HZ
4. Output Voltage & Frequency: 3×200VAC, 400HZ
5. Type: 400HZ underbridge power unit with cable coil
6. Cable length: 26 meters
7. Ingress Protection Grade: IP54
8. Applications: converter with power cable coil as combination to be used under the passenger boarding bridge
9. Brand: ACSOON (support OEM)
10. Features: Phase angle symmetry: 120°±1° for balanced load 120°±2° for 30% unbalanced load
- Product Description
Underbridge Power Unit: Reliable and Efficient Power Solutions for Critical Infrastructure
At XI'AN JERRYSTAR INSTRUMENT CO., LTD, we specialize in designing and manufacturing top-quality underbridge power units. Our expertise in power conversion technology allows us to deliver reliable solutions for critical infrastructure projects. With over 15 years of experience, we pride ourselves on our commitment to innovation, quality, and customer satisfaction.



Technical Specifications
| Feature | Specification |
|---|---|
| Model | GPU400L-330090 |
| Input Voltage | 380V/400V±10% |
| Output Voltage | 115V/200V |
| Frequency | 400HZ ±0.1% |
| Power Rating | 90 kVA |
| Cable System | Auto-retracted |
| Protection | Overload, short circuit, over/under voltage |
| Operating Temperature | -20°C to +55°C |
| Humidity | 0-95% non-condensing |

Application Areas
Our products are ideal for various critical infrastructure applications, including:
Airports: Powering boarding bridges & ground support equipment.
Rail Networks: Reliable power for rail maintenance & inspections.
Bridge Maintenance: Supporting underbridge inspection & repair.
Construction: Supplying power for large infrastructure projects.
Urban Transit: Ensuring power for metro & light rail systems.
Maritime: Powering dock & port operations equipment.
Emergency Response: Providing portable power for disaster recovery.
Quality Control
At ACSOON, quality is our top priority. We implement rigorous quality control measures throughout our production process:Stringent material selection and supplier vetting、Regular equipment calibration and maintenance、Comprehensive product testing at multiple stages、Continuous staff training on quality assurance protocols、ISO 9001 certified quality management system

Why Choose ACSOON Underbridge Power Units?

R&D Results
Our commitment to innovation has led to several breakthroughs in underbridge power unit technology:Enhanced energy efficiency, reducing operational costs、Improved thermal management for extended product lifespan、Advanced control systems for precise power regulation、Compact designs for easier installation and maintenance、Integration of smart monitoring capabilities for predictive maintenance
Packaging and Transportation
We ensure the safe delivery of our products through:
Custom-designed packaging to prevent damage during transit.
Shock-absorbing materials for sensitive components.
Clear labeling and handling instructions
Partnering with reliable logistics providers for domestic and international shipping.
Real-time tracking of shipments for your peace of mind.


After-Sales Service
Our commitment to your success extends beyond the sale:
24/7 technical support.
Comprehensive product documentation and user manuals.
Regular software updates and firmware upgrades
On-site maintenance and repair services.
Spare parts availability for quick replacements.
Qualification Certification
ACSOON products are certified by:
ISO 9001:2015 Quality Management System.
CE Marking for European market compliance.
UL Certification for North American markets.
RoHS Compliance for environmental standards.
Additional regional certifications available upon request.

FAQ |
|---|
| Q1: What is the typical lifespan of an ACSOON product? |
| A: With proper maintenance, our units can operate reliably for 15-20 years. |
| Q2: Can your products be customized for specific voltage requirements? |
| A: Yes, we offer customization options to meet various input and output voltage needs. |
| Q3: What is the warranty period for ACSOON products? |
| A: We provide a standard 2-year warranty, with extended warranty options available. |
| Q4: How quickly can you deliver a products? |
| A: Standard lead time is 4-6 weeks, with expedited options for urgent requirements. |
| Q5: Do you provide installation services for your products? |
| A: Yes, we offer installation and commissioning services through our global partner network. |
Contact Us
For inquiries about our underbridge power units or to request a quote, please email us at acpower@acsoonpower.com. Our dedicated team is ready to assist you with your power supply needs.












