Product Details
Company Profile

Oil Immersed Type Power Distribution Transformer Outdoor 250KVA 315KVA Three Phase

Product Specifications

Attribute	Value
Frequency	50Hz, 60Hz
Phase	Three
Coil Number	Two Windings, Multi Winding, Three Windings, Single Winding
Application	power transformer
Coil Structure	Shell-Type Coil, layer coil, fully sealed construction, Disc Coil, round coil
Output Voltage	220V, 380V
Input Voltage	11kV, 10.5kV, 3kV, 12.47kV, 6.6kV
Type	Oil-Immersed Transformer, AUTOTRANSFORMER, Oil Filled Type
Winding Material	100% Copper/Aluminum
Cooling Method	ONAN ONAF
Customized	Accept
Capacity	250KVA 315KVA
Vector Group	Dyn11 / Yyn0
Usage	Power Transformer
Efficiency	≥98%
Rating Capacity	30-1600KVA
Installation	Indoor/Outdoor
Application	Power transmission
Poles	3
Second Voltage	0.4kv
Number Of Phases	Three Phases
Transformer Type	S11 Oil-immersed Transformer
Rated Voltage	6kV-500kV
Installation Method	Outdoor/Indoor
Noise Level	≤65dB

Product Overview

HENTG POWER Three Phase Outdoor 250KVA 315KVA Oil Tester Step Down Power Distribution Transformer

Our oil-immersed distribution transformers range from 30kVA to 2500kVA, with voltage levels up to 35kV. They are widely used in power utilities, renewable energy, industrial facilities, railway systems, and urban infrastructure. Designed to IEC and ANSI standards, our transformers offer high efficiency, low losses, and long service life, suitable for both indoor and outdoor environments.

Key Features

Higher Energy Efficiency: Lower no-load and load losses through optimized magnetic circuit and winding designs
Improved Temperature Rise Performance: Enhanced oil circulation and cooling systems for stable operation
Reduced Noise Levels: High-permeability silicon steel and precision manufacturing for quieter operation
Robust Mechanical Design: Optimized winding structure for improved short-circuit resistance
Longer Service Life: High-quality materials and construction for 20-30 years of reliable service

Technical Parameters

Rated capacity (KVA)	Vector Group	Voltage Combination	No-load loss	Load loss	No-load current	Impedance
30	Yyn0 / Dyn11	10 6.3 6 ±5% ±2X2.5% 0.4	80	630	1.5	4.0
50			100	910	1.3
63			110	1090	1.2
80			130	1310	1.2
100			150	1580	1.1
125			170	1890	1.1
160			200	2310	1.0
200			240	2730	1.0
250			290	3200	0.9
315			340	3830	0.9
400			410	4520	0.8
500			480	5410	0.8
630			570	6200	0.6	4.5
800			700	7500	0.6
1000			830	10300	0.6
1250			970	12000	0.5
1600			1170	14500	0.5
2000			1360	18300	0.4	5.0
2500			1600	21200	0.4	5.0

Ordering Process

Step 1: We respond within 1 hour with suitable transformer recommendations, reasonable quotations, and payment terms. Our technical team confirms all drawing details within 7 days after payment.

Step 2: After design approval, we prepare materials, manufacture, and conduct quality inspections. We provide QC and test reports for all products.

Step 3: We offer professional installation guidance or on-site support, plus a 2-year warranty service.

Why Choose HENTG Power?

✅

Own Factory, Direct Manufacturer

✅

24h Quick Quotation

✅

Customization Available

✅

Over 60 Countries Exported

✅

Engineering Support Available

Company Profile

HENTG Power is an ISO9001 certified transformer manufacturer specializing in reliable, high-performance solutions for global power systems since 2011.

With a 100,000 m² factory, over 250 skilled workers, more than 30 senior engineers, and 10+ professional testing engineers, we deliver high-quality transformer solutions with strong production capacity of 20,000 units/year.

Application Scenarios

Power Distribution Networks
Renewable Energy Systems
Industrial Facilities
Railway Systems
Urban Infrastructure

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