Distribution transformers are normally located at a service drop, where wires run from a utility pole or underground power lines to a customer's premises. They are often used for the power supply of facilities outside settlements, such as isolated houses, farmyards or pumping stations at voltages below 33 kV. Another application is the power supply of the overhead wire of railways electrified with AC. In this case single phase distribution transformers are used. 
The number of customers fed by a single distribution transformer varies depending on the number of customers in an area. Several homes may be fed off a single transformer in urban areas; rural distribution may require one transformer per customer. A large commercial or industrial complex will have multiple distribution transformers. Pad mount tansformers are used in urban areas and neighborhoods where the primary distribution lines run underground. Many large buildings have electric service provided at primary distribution voltage. These buildings have customer-owned transformers in the basement for step-down purposes.  In a secondary network system as used in urban areas, many distribution transformers may be connected in parallel, each equipped with its own network protector circuit breaker to isolate it from the secondary network in case of a fault.

Distribution transformers are also found in the power collector networks of wind farms, where they step up power from each wind turbine to connect to a substation that may be several miles (kilo meters) distant.

Rated capacity: 2500kva

Standard: IEC60076 ANSI BS GB

Cetification: ISO CCC PICC

Phase: 3 

Power frequency: AC 50Hz/60Hz

High voltage: 11kv

Vector group: Yyn0 Dyn11 Yd11 Dyn5 Dzn5

Coil material: Copper / Aluminium

Core material: CRGO sillicon steel

Insulation level: A

Insulation liquid:  Mineral oil #10 / #25 / #45 NON-PCB

Tap changer type: On load tap changer/Off load tap changer

Tapping range: ±2x2.5% / ±2x5% / ±4x2.5% / ±8x2.5%

Temperature rise: 60/65 ^oC

Lightning impulse insulation level: 75kv

Cooling system: ONAN/ONAF

Altitude:  1000M

Ambient temperature: -25 to +40 ^oC

Jubang Electric Group Co., Ltd.

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Business Type:Business Service

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