CertificationsIEC 62271-200, IEC 694, GB3906, DIN VDE 0670
The Huajidian 11kV 200kVA 3 phase distribution transformer is a fully sealed oil-immersed power distribution device independently developed and manufactured by a professional domestic manufacturer. The product adheres to standardized production and stringent quality control throughout the entire process. Even in small-capacity models, no compromises are made on craftsmanship or materials, resulting in advantages such as low noise, high structural strength, weather resistance, corrosion resistance, maintenance-free operation, and customization. The equipment is suitable for various scenarios including residential power distribution, rural power grid upgrades, and small-to-medium-sized industrial and commercial projects. It boasts stable operation and a comprehensive after-sales service system, meeting the power distribution needs of both domestic conventional projects and overseas non-standard projects. It is a reliable and cost-effective device for high and low voltage power distribution engineering.
Leveraging the brand's strong manufacturing capabilities, this 11kV 200kVA 3 phase distribution transformer is
manufactured on a dedicated oil-immersed transformer production line, with standardized and meticulous operations
throughout all processes, including core processing, coil winding, tank welding, and vacuum oil filling. As a reliable
industry supplier, Huajidian supports on-demand adjustments to equipment voltage levels, wiring groups, and accessory
configurations. It adapts to both domestic 11kV standard requirements and rapidly responds to overseas non-standard
customization needs, suitable for various domestic and international power distribution projects.
High production efficiency allows for handling bulk substation upgrade orders as well as personalized customization
for individual projects, ensuring on-time delivery and no project delays. A professional technical team provides
comprehensive after-sales maintenance and selection consultation, installation guidance, and complete after-sales
support, completely eliminating user concerns about equipment use.
Core Product Features and Technical Advantages
1. Ultra-Low Noise Operation, Suitable for Sensitive Scenarios
The equipment core uses a high-strength integral binding process, significantly reducing electromagnetic vibration and
resulting in extremely low operating noise. It can be safely installed in noise-sensitive areas such as residential
areas and villages without disturbing residents' daily rest, perfectly suited for densely populated power supply
scenarios.
2. Excellent Structural Strength and Strong Impact Resistance
The internal coils undergo special curing treatment, resulting in high mechanical strength and excellent structural
stability. Facing complex operating conditions such as grid voltage fluctuations and sudden short-circuit impacts, the
coils are not easily deformed or damaged, ensuring stable power output and effectively improving the overall
reliability of the power distribution system.
3. Weather-resistant, corrosion-resistant, and durable with a long outdoor service life
The 11kV 200kVA 3 phase distribution transformer tank is made of thickened cold-rolled steel plate in one piece, with
no structural gaps, eliminating the risk of oil leakage. The outer wall is coated with high-performance
weather-resistant and corrosion-resistant paint, which can withstand wind, sun, and rain for a long time. It is not
prone to rust and corrosion even after more than ten years of outdoor use, significantly reducing equipment
replacement costs.
4. Fully sealed and maintenance-free, with lower operating costs
The side corrugated radiator has both heat dissipation and automatic compensation function for transformer oil thermal
expansion and contraction, eliminating the need for an additional oil conservator. The equipment is completely
isolated from air and moisture, delaying the aging of the insulating oil. Frequent oil changes are unnecessary, and
daily maintenance workload is minimal, resulting in worry-free and cost-effective long-term use.
5. Reliable Insulation and Flexible Installation
High-voltage end is equipped with high-quality ceramic bushings, providing ample creepage distance and minimizing
flashover in rainy or humid weather, ensuring equipment insulation safety. A pre-installed lifting ring on the top
ensures stable and convenient hoisting and transportation; the base features standard mounting holes, supporting pole
mounting, ground mounting, and substation installation, adapting to various construction scenarios. The nameplate on
the unit displays clear parameters, allowing maintenance personnel to quickly read core information such as equipment
model, capacity, and voltage without consulting a manual.
Real-world Application Case
In the rural power grid upgrade project in Yulin, Shaanxi Province, the local power department addressed the issues of
surging household appliance loads, insufficient existing distribution capacity, and unstable voltage by replacing old
160KVA transformers with Huajidian 11kV 200kVA 3 phase distribution transformers.
After installation and commissioning, the equipment successfully handled peak summer and Spring Festival electricity
demand, operating stably throughout. Its ultra-low noise design is suitable for rural living environments, and its
fully sealed, corrosion-resistant structure is suitable for outdoor use, requiring minimal maintenance. This equipment
effectively solved the voltage imbalance and insufficient power supply problems for over 80 households in the
surrounding area, significantly improving the reliability of rural power supply. Relying on stable product
performance, efficient factory delivery, and on-site technical guidance services, the project was completed on
schedule and passed acceptance to high standards, gaining high recognition from the client.
Customization and Delivery Service Advantages
Huajidian has deep expertise in transformer R&D and production, possessing mature flexible production
capabilities. For this 200KVA transformer, voltage levels can be optimized and wiring methods adjusted according to
on-site conditions, and auxiliary accessories such as temperature control and protection can be selected, precisely
matching both domestic standard power grid standards and the needs of special non-standard overseas projects.
Standardized production lines accommodate both bulk procurement and individual customized orders, ensuring sufficient
production capacity and stable delivery times. A dedicated technical team provides full-process follow-up service,
covering pre-sales selection, in-sales installation guidance, and after-sales fault repair, providing comprehensive
service guarantees.
FAQ
Q1: What is the difference between a fully sealed transformer and a transformer with an oil conservator? Which is more
suitable for outdoor use?
Both product types have their advantages: Huajidian's fully sealed transformers are maintenance-free and offer
excellent moisture and dust resistance, isolating them from water vapor and impurities. They are suitable for outdoor,
humid, dusty, and corrosive conditions, making them the preferred choice for long-term outdoor fixed installations.
Transformers with oil conservators offer better heat dissipation and are more suitable for long-term high-load
continuous operation. We can recommend suitable models based on the customer's site environment and load conditions.
Q2: Does this transformer require additional protective facilities when installed outdoors in coastal areas?
Standard outdoor pole-mounted and ground-mounted transformers do not require additional protection. The equipment
comes standard with a weather-resistant and corrosion-resistant coating that can withstand normal wind, rain, and sun
exposure. For coastal areas with high salt spray and strong corrosiveness, a reinforced anti-corrosion coating can be
customized to significantly improve the equipment's corrosion resistance and outdoor service life.
Q3: What customization services does this 11kV 200kVA 3 phase distribution transformer support?
The product supports comprehensive personalized customization. Core parameters such as voltage level and wiring method
can be adjusted as needed. Auxiliary accessories such as temperature controllers, surge protectors, and monitoring
sensors can also be added. Whether it's a domestic standard model or a special non-standard parameter requirement from
overseas, we can respond quickly and customize production to meet the differentiated power distribution needs of
various projects.
● Installation height: altitude shall not exceed 1000m
● Ambient temperature: -40℃~40℃
Rated capacity
Installation dimension(mm)
kVA
L
W
H
C1
C2
50
1140
915
1430
550
550
100
1140
1040
1550
550
550
125
1140
1040
1580
550
550
160
1660
880
1620
660
660
200
1660
890
1650
660
660
250
1660
900
1690
660
660
315
1745
920
1760
660
660
400
1785
1000
1810
660
660
500
1815
1100
1850
820
820
630
1830
1115
1920
820
820
800
1905
1230
1960
820
820
1000
2260
1250
2135
820
820
1250
2415
1320
2165
820
820
1600
2505
1450
2235
820
820
S9-50 ~ 1600/35 transformers
Rated capacity
Voltage combination
Connection group
Loss (KW)
No-load current
Short-circuit impedance
Weight (kg)
kVA
HV kV
High-voltage tapping range
LV kV
symbol
No-load
On-load
%
%
Oil weight
Gross weight
50
35
38.5
±5%
±2×2.5%
0.4
Dyn11
Yyn0
0.21
1.27/1.21
2
6.5
220
610
100
0.29
2.12/2.02
1.8
250
810
125
0.34
2.50/2.38
1.7
255
885
160
0.36
2.97/2.83
1.6
305
1040
200
0.43
3.50/3.33
1.5
403
1400
250
0.51
4.16/3.96
1.4
412
1450
315
0.61
5.01/4.77
1.4
430
1600
400
0.73
6.05/5.76
1.3
460
1700
500
0.86
7.28/6.93
1.2
525
2025
630
1.04
8.28
1.1
580
2315
800
1.23
9.9
1
645
2715
1000
1.44
12.15
1
745
3315
1250
1.76
14.67
0.9
825
3730
1600
2.10
17.55
0.8
955
4420
Note: load loss values above the oblique line in the table are suitable for products of connection group Yd11, and values below are suitable for products of connection group YNd11.
Order guide
Please specify the product model, rated capacity, HV/LV rated voltage and high-voltage tapping range, phase number, frequency, connection group symbol and so on in the order.
Hot Tags: 11kV 200kVA 3 Phase Distribution Transformer, 3 Phase Distribution Transformer Manufacturer, 200kVA Distribution Transformer Supplier
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