The 10kV NX1 cast-resin dry-type distribution transformer rated from 100 kVA to 2500 kVA delivers exceptional energy efficiency aligned with the GB20052-2024 Grade 1 standard. Featuring vacuum-cast epoxy resin windings and minimizing both no-load and load losses, it provides sustainable lifecycle power performance for modern demanding facilities. Beijing Zhongping Technology supplies this high-efficiency unit from reliable inventory to support urgent infrastructural upgrades.
Modern industrial facilities, commercial complexes, and data centers continuously face stringent energy conservation targets alongside rising operational costs. Traditional distribution infrastructure often suffers from high thermal dissipation and excessive core losses, resulting in significant long-term energy waste and heavy maintenance burdens. This 10kV NX1 resin cast distribution transformer resolves these engineering bottlenecks by utilizing advanced vacuum-pressure casting technology for its foil windings. By adopting high-grade grain-oriented silicon steel cores and optimized magnetic flux density distributions, the unit successfully minimizes eddy current losses and acoustic resonance. The robust foil winding geometry evenly distributes axial and radial short-circuit mechanical stresses during high-fault currents. Integrated thermal management relies on natural air cooling or auxiliary forced air cooling to maintain optimal operating temperatures without oil leakage risks.
Technical Specifications
Rated Voltage High Side: 10 kV @ Rated Frequency 50 Hz
Rated Voltage Low Side: 0.4 kV @ Full Load
Capacity Range: 100 - 2500 kVA @ Continuous Operation
Efficiency Standard: GB20052-2024 Grade 1 (NX1) @ Standard Reference Temperature 75°C
Windings Conductor Material: Copper or Aluminum @ Customer Specification
Winding Insulation System: Class F / H Epoxy Resin @ Vacuum Cast
Vector Group: Dyn11 or Yyn0 @ Standard Configuration
Cooling Method: AN or AF @ Ambient Temperature Max 40°C
Enclosure Protection Degree: IP00 to IP23 @ Indoor Installation
Impedance Voltage: 4% - 6% @ Rated Tap Position
Product Overview and Key Features
The 10kV NX1 resin cast distribution transformer functions as a premier indoor dry-type power asset designed for primary and secondary distribution networks. It operates seamlessly within a 10 kV system voltage framework, stepping down electricity reliably to a low voltage of 0.4 kV across a comprehensive 100 kVA to 2500 kVA capacity spectrum. This equipment serves as an ideal power backbone for green buildings, hospitals, and high-density computing environments.
Vacuum-cast epoxy resin windings provide superior moisture resistance, crack prevention, and exceptionally low partial discharge levels during long-term operation. Foil winding construction significantly elevates short-term structural stability against electromechanical forces generated during system faults. The oil-free structural design completely eliminates fire hazards and eliminates fluid leakage risks, ensuring zero environmental contamination. Advanced low-loss core engineering reduces baseline power consumption, directly translating into substantial carbon footprint reductions and lower utility expenditures.
Optimized core step-joint designs reduce magnetic reluctance, which simultaneously subdues operational noise and facilitates close proximity installation near human-occupied load centers. Integrated monitoring options including embedded PT100 temperature sensors and RS485 communication modules offer real-time thermal tracking capabilities. High-voltage coils utilize reinforced insulation barriers, while low-voltage foil configurations ensure balanced current distribution and minimized thermal hot spots throughout the active internal assembly.
Applications and Selection Guide
This transformer excels in environments where strict fire safety, minimal environmental impact, and superior energy performance are absolute prerequisites. Data centers, high-rise commercial structures, and underground metro stations benefit immensely from its low acoustic signature and non-flammable dry construction. Industrial manufacturing plants with fluctuating load profiles also utilize this unit to maintain stable voltage regulation and reduce facility-wide electrical distribution overhead.
The selection process requires a systematic evaluation beginning with system voltage verification, followed by precise maximum load capacity calculations and required energy efficiency tier alignment. Engineers must subsequently determine enclosure protection requirements based on ambient indoor conditions, ranging from open chassis IP00 configurations to protective IP23 metallic enclosures. Special project specifications may introduce customization requests such as dual low-voltage outputs, harmonic-resistant core structures, or specialized marine-grade anti-corrosion treatments for offshore installations.
Installation and Compliance
The transformer unit relies on a rigid structural base equipped with bidirectional flat rollers to facilitate smooth positioning inside dedicated electrical rooms or prefabricated substations. Enclosures must match the operational environment, utilizing IP20 or IP21 for standard clean indoor utility spaces, while damp or dusty locations require IP23 specifications. High-voltage connections typically utilize cable terminations or separable insulated connectors, whereas low-voltage sides accommodate flexible busbar drops to absorb thermal expansion forces.
High-voltage power cables can enter via bottom cable trenches or top-entry conduit structures depending on facility architecture. Control wiring for temperature monitors and cooling fans must run through dedicated metal conduits, completely separated from high-voltage pathways to prevent electromagnetic interference. Reliable grounding of the core, frame, and enclosure must comply strictly with local electrical safety codes to eliminate stray currents and potential difference hazards.
Compliance is verified through rigorous adherence to national and international manufacturing benchmarks including GB, IEC, and ANSI standards. Routine factory type tests include lightning impulse voltage tests, temperature rise verification, and dynamic short-circuit withstand assessments. The design aligns thoroughly with modern green building codes and environmental safety directives.
Frequently Asked Questions
Q: What is the current inventory status and average delivery turnaround time for this transformer model?
A: Beijing Zhongping Technology maintains strategic regional stock for standard configurations, ensuring rapid dispatch to minimize project downtime and eliminate prolonged overseas shipping delays.
Q: What comprehensive warranty terms and after-sales support protocols apply upon delivery?
A: Every unit is backed by a robust 12-month operational warranty, supported directly by Beijing Zhongping Technology engineering teams who provide pre-shipment quality verification reports and responsive remote troubleshooting assistance.
Q: What are the distinct performance and operational differences between copper and aluminum winding variants?
A: Copper windings offer higher electrical conductivity and thermal efficiency, resulting in a slightly more compact physical footprint and lower overall losses. Aluminum windings provide a cost-effective alternative with lighter weight, though they require larger cross-sectional areas to achieve equivalent electrical performance.
Q: Can this indoor dry-type transformer be installed outdoors if placed inside a protective enclosure?
A: Yes, provided the transformer is housed within a weather-resistant secondary enclosure rated at least IP23 or higher to protect against direct precipitation, high humidity, and direct solar radiation.
Q: What is the maximum short-term overload capacity of this resin cast transformer under emergency conditions?
A: Temporary overloads are permissible based on standard thermal loading guides for dry-type transformers, provided ambient temperatures remain within acceptable limits and overall winding insulation life is not severely compromised.
Q: What routine maintenance procedures are required for this oil-free dry-type distribution design?
A: Maintenance is minimal due to the absence of insulating liquids, requiring periodic visual inspections for dust accumulation, thermal scanner checks of terminal connections, and functional testing of the embedded PT100 temperature controller.
Q: How does the acoustic noise level perform when the transformer operates near noise-sensitive zones like hospitals?
A: The core design employs precision-stepped joints and high-permeability silicon steel to suppress magnetostriction noise, maintaining operational decibel levels well below standard building acoustic thresholds for quiet indoor placement.
Q: What specific energy efficiency parameters distinguish the GB20052-2024 Grade 1 standard from older iterations?
A: Grade 1 represents the highest statutory efficiency threshold, enforcing strictly reduced no-load iron losses and load copper losses to maximize total lifecycle energy savings across continuous industrial operation.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a global industrial electrical automation service provider, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1) Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3) At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
+86 010-64225983
+8613811814778
Building 26, Liyuan Community, Chaoyang District, Beijing, China
