100 kva transformer ultimate purchasing guide

100 kva transformer is one of the most frequent modes that clients will inquire to. In Conso Electrical, the expert team could manufacture 100 kva oil immersed transformer, 100 kva dry type transformer, 100 kva pad mounted transformer and 100 kva compact substation. Ever more, Conso Electrical could supply an ideal solution to meet the demand of clients.

For example, the engineering team could deign a 100 kva oil immersed transformer for desert climate, mountainous climate, or cold climate. To design a 100 kva pad mounted transformer or a compact substation, our engineer team could provide an advanced solution for the control unit and the capacity bank unit.

Table of the content

1.What is the application background of a 100 kva transformer? 2.How do I choose a 100 kva transformer? 3.What is the key specification to a 100 kva transformer? 4.How many rated current could a distribution transformer supply? 5.100 kva transformer for sale.

What is the application background of a 100 kva transformer?

A 100 kVA transformer is a small capacity transformer to three phase distribution transformers. Normally, a 100 kva transformer is widely to provide power supply to community as a pole mounted transformer or to a city park for lighting as a pad mounted transformer.

How do I choose a 100 kva transformer?

First of all, it is necessary to clarify the value of power needed or the active power of a 100 kva transformer could supply. For a 100 kva transformer, it could supply 100 kva total power to terminal users. However, it is impossible to use the total power on energy conversion, because some part energy use to keep the voltage stable in AC circuit. In most of countries and areas, the power gird corporation will keep 90% of total power that could actual supply to terminal users. The 90% power is called active power, which the unit is kW. Thus, a 100 kva transformer could supply 90 kW active power to terminal users.

Secondly, a 100 kva designed as various categories to fit the working environment. That is to say, to select a suitable 100 kva transformer, terminal users should know the working environment. For example, the oil immersed transformer widely use in outdoor and the cast resin transformer widely use in fireproof environments.

Thirdly, the budget is also an essential consideration. A oil immersed transformer is a lower material costs than a cast resin dry type transformer, but a cast resin transformer has a lower maintenance costs.

Additionally, a better outside looking will be considered in some circumstance, such as in a luxury residential area or a city park. It has the same function and characteristics between a pole mounted substation and a pad mounted transformer. However, the input and output cable connect to a pad mounted transformer through the underground. It makes the urban landscape more beautiful. And the severe weather will not impact to power supply circuit.

What is the key specification to a 100 kva transformer?

1.The following parameter is the basic information to a 100 kva transformer:

(1)      Rated capacity;

(2)      Primary and secondary voltage;

(3)      Rated frequency;

(4)      Insulated material (dry type or oil immersed);

(5)      Phase number (single phase or three phase).

2.The following parameter can impact material costs significantly:

(1)      Temperature rise;

(2)      No loading loss and loading loss;

(3)      Winding materials.

3.The impedance and the vector group is essential to keep similar or same if it is necessary to parallel connect distribution transformers.

How many rated current could a distribution transformer supply?

It is important to measure the actual current to a distribution transformer, because it could check if the actual capacity matches to the designed which write on the name place or not.

the following table shows the value of current could be supply by 1 kva in different voltage levels:

Phase voltage	Amps	Power factor	Line voltage	Amps
110 V	9.0909 A	1	208 V	2.7757 A
120 V	8.3333 A		200 V	2.8867 A
127 V	7.8740 A		220 V	2.6243 A
220 V	4.5454 A		240 V	2.4056 A
230 V	4.3478 A		380 V	1.5193 A
240 V	4.1666 A		400 V	1.4433 A
			415 V	1.3912 A
			460 V	1.2551 A

For example, a 100 kva transformer could supply 151.93 A under 380 V line voltage and 454.54 A under 220 V phase voltage, if the power factor is 1. 

100 kva transformer for sale.

Normally, a 100 kva transformer costs about $1400 to $ 7000. take a 10/0.4 kv three phase copper 100 kva transformer as an example:

1.The 100 kva oil immersed transformer might costs about $1900;

2.The 100 kva cast resin transformer might costs about $2400;

3.The 100 kva pad mounted transformer might costs about $4800.

However, the price is variable as the current costs of materials and the different specifications.

Conso Electrical Science and Technology Co., Ltd manufacture and sale brand new 100 kva transformers and compact substations since 2006. Conso Electrical seriously executes the standard of ISO 9001 14001 and 45001 to produce each 100 kva transformer.

Conso Electrical provides customized service to clients to manufacture distribution transformers, compact substation and electrical switchgears. The engineering teams has more than 20 years’ experience to optimize solutions from clients.