160 kVA 10 kV Oil-Filled Three-Phase Distribution Transformer: Specifications and Applications

Overview

The 160 kVA 10 kV oil-filled three-phase distribution transformer steps medium voltage down to utilization voltage for industrial, agricultural and civil loads. It is also suitable for sites in the oil and chemical sector where robust oil preservation and flame-resistant arrangements are required. The oil-immersed design provides efficient cooling, high overload capability and a long service life at a competitive first cost.

Key Features

Excellent heat dissipation through oil circulation and a corrugated tank wall.

Superior insulation performance with refined insulating oil and properly dried windings.

Long lifespan and high reliability under continuous duty.

Adaptability to harsh environments, including temperature extremes, dust and humidity.

Cost-effectiveness and low noise operation.

Voltage and capacity options matched to utility and industrial network requirements.

Technical Specifications

Parameter	Value
Rated power	160 kVA
Primary voltage	2.4 - 34.5 kV (10 kV typical)
Secondary voltage	480/277 V, 400/230 V, 380/220 V or customized
Frequency	50/60 Hz
Vector group	Dyn11, Yyn0, Dyn5
Winding material	Aluminum or copper
Efficiency	Per IEEE C57.12.00, DOE 2016 or customized target
Impedance voltage	Nominal 2%, or 1.1 - 5.75% customized
Altitude	Up to 1000 m (derating above)
Color	ANSI 70 light gray, Munsell 7GY3.29/1.5 or customized
Tank material	Mild steel or 304 stainless steel
Insulating oil weight	265 kg
Total weight	1100 kg
Outline dimensions (LxWxH)	1350 x 950 x 1400 mm

Values above describe the standard configuration of this model; deviations are confirmed during engineering review.

Service Environment

Ambient temperature: -40 C to +40 C; continuous operation at up to 55 C is possible with a customized design for desert sites.

Altitude below 1000 m.

Seismic acceleration below 3 m/s2 horizontally and 1.5 m/s2 vertically.

Installation site free of heavy pollution, explosive or corrosive gas and dust, with good ventilation and no severe vibration or shock.

Standards and Testing

Design, manufacture and testing follow IEC 60076-1/-2/-3, IEEE C57.12.00 and GB/T 6451. Routine tests include turns ratio, vector group verification, impedance voltage, no-load and load losses, induced overvoltage and dielectric tests; type tests cover temperature rise and short-circuit withstand.

Application Scenarios

Utility distribution networks feeding residential, commercial and agricultural zones.

Industrial and mining enterprises with mixed motor and lighting loads.

Oil and chemical facilities requiring sealed, low-maintenance oil preservation.

Renewable energy auxiliary supplies and site distribution.

Frequently Asked Questions

What voltage combinations are available?

Primary voltages from 2.4 kV to 34.5 kV, with 10 kV the most common; secondary voltages of 480/277 V, 400/230 V and 380/220 V, with other combinations available on request.

Which vector group should I choose?

Dyn11 for LV networks with unbalanced loads and a neutral for single-phase loads; Yyn0 for simple balanced supplies; Dyn5 for certain retrofit or parallel-operation cases. Confirm with the system designer.

Aluminum or copper windings?

Copper gives lower load loss and a smaller tank for the same rating; aluminum is more economical with slightly larger dimensions. The choice depends on the loss capitalization and first-cost budget.

Can it operate at 60 Hz?

Yes, the unit is designed for 50/60 Hz; specify the system frequency and voltage at inquiry so the design can be optimized.

What about high-altitude sites?

Above 1000 m, cooling and dielectric withstand are derated per IEC 60076-2. Provide the site elevation so the design can be adjusted.

How is a 160 kVA unit normally protected?

Typically with an HV fuse or breaker, a pressure relief device, and optional gas relay with alarm and trip contacts; oil level and temperature are monitored with standard fittings.