Oil distribution transformers 50 kVA up to 2.500 kVA (2024)

FAQs

How much load can a 50 kVA transformer handle? ›

A 50 kVA transformer can handle around 120.28 amperes at 240 volts 3-phase. To calculate that value, we: First convert 50 kVA to 50,000 VA by multiplying 50 kVA by 1,000. Then divide 50,000 VA by 240 volts to get 208.333 amperes.

How much oil is in a 2500 kVA transformer? The transformer oil of a 2500 kVA, 13.8kv pad-mounted transformer is 383 Gal.

What is a 50 kVA transformer？ A 50 kVA transformer has a capacity of 50 kilovolt-amperes, with a power factor of approximately 0.85. It provides around 45 kW of active power and can support electrical appliances consuming up to 45 kW.

ONAN/ONAF (KNAN/KNAF) Extended Cooling Class Ratings

For example, a transformer may be rated ONAN/ONAF (2500/3125 kVA). Up to 2500 kVA, the transformer's cooling surface (tank and radiators) is air cooled by natural convection. Above 2500 kVA, the transformer's fans activate.

Amperage provided for a given KVA can be determined by similar techniques: Single Phase Example: Using a 50 KVA Single Phase Transformer as a starting point. 50KVA is equal to 50,000 VA. (K= 1,000) The full value in VA, 50,000 is then divided by the Voltage 240V = 208 Amperes.

But for 240VAC 200A service, that's 48kVA, so a 50 kVA transformer can power only one home. However, at 1500 KWH/month or 50 KWH/day or 2.083 KWH/hour or average 2.083 kVA. But that's the average. I would say it could be up to 5 times or 10kVA at a time, so a 50kVA transformer can power 5 homes.

To determine the capacity of oil immersed transformer, the load rate of oil immersed transformer must be determined first. When the air vibration loss is equal to the square of load rate and load loss, the efficiency of oil immersed transformer is higher.

The oil capacity of a 315KVA transformer is 380 liters.

According to the requirements of the environment, Daelim can offer vegetable oil with UL certification. Liters of oil advisable for 315 kVA transformer (not including oil absorbed by the core and coil assembly): Voltage rating of 11/0.433 kV = 500.

kVA= Current × Voltage × √3 / 1000

Say your household load voltage is 2000V, and the load current is 250A. For this load capacity, the suggested size of the transformer is 1000kVA.

What happens if load on transformer is reduced by 50? ›

Below 50% load, the following effects may be noticed: (1) Regulation will improve. This means slightly increased secondary terminal voltage. (2) Depending upon the ratio copper loss to core loss, efficiency may decrease or increase.

If a transformer rated for 2500 VA is loaded resistively, it can handle a power input/output of 2.5 kw.

Cooling of a transformer is the process of dissipation of heat developed in the transformer to the surroundings. The losses occurring in the transformer are converted into heat which increases the temperature of the windings and the core. Therefore, cooling is done to dissipate the heat generated in the transformer.

It can step down the high voltage (7.2kV, 14.4kV, 12.47kV, 24.94kV) to the low voltage (120V, 240V) required by household electrical equipment. Types of Residential Transformers: The most common types of residential transformers are pole-mounted and pad-mounted transformers.

1, if it is a power transformer, for example, the high voltage is 35kV, and the low voltage is 3.15-11kV. So, whether load voltage regulation or no excitation voltage regulation, according to the national standard, the maximum capacity is 20000kVA.

Ok in that case you will need to use a 50amp 480v breaker to protect the transformer/feed power to it.

A 50kVA transformer may have an inrush current of between 8 and 10 times its FLA, for a maximum time of 0.1s.

To calculate the kVA rating for a single-phase transformer, you'll need to multiply the required input voltage (V) by the required current load in amperes (l) and then divide that number by 1,000: V * l / 1,000.