Types of Distribution Transformer
Based on the application or requirement, these transformers are categorized into different types like single phase, three phases, underground, pad-mounted, pole-mounted transformers.
The uses of the distribution transformer include the following.
The new red LZJC-10Q 10kV voltage epoxy resin cast insulation low-voltage single-phase current transformer is a kind of epoxy resin casting fully enclosed pillar-type structure of the current transformer, with a small volume, light weight, suitable for installation in any position and direction. The following are the main features and parameters of this product:
Overview:
LZJC-10Q current transformer is suitable for rated frequency 50Hz or 60Hz, rated voltage 10kV and below in the power system, used for electric energy measurement, current measurement and relay protection
It is used for power metering, current measurement and relay protection.
The product complies with IEC60044-1 and GB1208 "Current Transformer" standard.
The product complies with IEC60044-1 and GB1208 "Current Transformer" standard.
Structure Introduction:
The transformer is a pillar-type, fully enclosed structure, the core is made of high-quality cold-rolled silicon steel sheet coiled into a ring, the secondary coils are wound on the circumference, together with the primary are cast in epoxy resin casting body, with excellent insulation properties and moisture resistance, suitable for use in dirty, condensation and dew environment.
It is suitable for use in dirty and condensation environment.
Use environment:
Altitude of 3000 meters or less;
Surrounding medium temperature -5ºC~+40ºC;
The relative humidity of the air does not exceed 90% (when the temperature is 25ºC);
No gas, vapor, dust and other explosive or corrosive media that seriously affect the insulation of the transformer;
No violent vibration and bumps in the installation place
The installation place is free from violent vibration and bumps.
Technical parameters:
Rated voltage: 10kV;
Rated frequency: 50Hz;
Rated primary current: 5, 10, 15, 20, 30, 40, 50, 75, 100, 150, 200, 300, 400, 500, 600, 800, 1000A;
Rated secondary current: 5A;
Rated secondary combination: 0.5/10P10 or 0.5/10P15, 0.2/10P10, 0.2S/0.2, 0.5/0.5;
Rated load (COSf=0.8 lagging): 10VA for metering (1S) 0.2S, 0.2, 0.5 class; 15VA for relaying (2S) 10P class;
Relay (2S) rated accuracy limit factor (10% multiplier): ≥10
.
Insulation level:
Industrial frequency test voltage: primary to secondary and to ground 42kV/1min;
Under 8.3kV test voltage, partial discharge ≤20pC;
Along the surface of the confluence than the distance ≥ 20mm/kV
The
Fouling level:
Fouling level: Grade II
Rated dynamic and thermal stabilizing current
Rated dynamic and thermal stabilizing current:
The specific values are shown in the technical parameter table, for example, for the rated primary current of 5-400A, the rated dynamic stabilizing current is 90/160kA
.
This transformer changes from high voltage electricity to low voltage electricity, used in homes & businesses.
The main function of this is to step down the voltage to provide isolation between two windings like primary & secondary
This transformer distributes the power to remote areas which are generated from the power plants
Generally, this transformer distributes the electrical energy to industries with less voltage under 33KV and 440volts to 220volts for domestic purposes.
FAQs
Which transformer is used in an electrical distribution system?
A step-down transformer is used in an electrical distribution system
2). What is the difference between distribution & power transformer?
The power transformer is used in transmission networks with high voltages whereas a distribution transformer is used in low voltage distribution networks.
3). What are the types of transformers?
The different types of transformers are step up, step down, power, distribution, instrument, potential, comprising current, single-phase, 3-phase, auto, etc.
4). Why transformers are rated in kVA?
Because they do not change the power factor (PF) of their output power.
5). What is the formula for kW to kVA?
Apparent power (kVA) = Actual power (kW) / power factor (pf)
Thus, this is all about an overview of the distribution transformer. It is used to distribute the electrical energy in industries with a voltage less than & 440v to 220v for domestic purposes. It works with less efficiency and they are small in size, easy to install, include low magnetic losses.
What is a Distribution Transformer?
Unlike a power transformer, distribution transformers serve for circulation purposes. Such equipment will, therefore, bring down (step down) the voltage and incidental level of a power transmission line to a predetermined scale. This predefined level is also referred to as the end-user safety level, either for domestic consumers or for industrial purposes.
Though similar in stature to a power transformer, a distribution transformer's voltage range varies between 33kV to 430V.
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