Not all are aware that a feeder is also called as high voltage switchgear.
It is composed of:
- feeder switchgear
- receiving switchgear and;
- high voltage switchgear
Today, it is referred to as receiving switchgear for incoming switchgear.
When it comes to outgoing switchgear, it’s known as feeder switchgear.
In short, it’s a kind of outlet situation of the HV switchgear.
That simply denotes that the high voltage outlet is direct to the transformer.
What is Feeder?
Feeder line is a part of an electrical distribution network.
It’s an electrical wiring circuit in a building helping bring power from switchgear to a distribution panel.
Various feeders are linked to the feeder bus to feeds various loads such as:
- lighting loads
- motor loads
- air conditioner loads
- industrial machinery loads and more
Every feeder is mainly safeguarded by a switch fuse unit.
Apart from that;
Depending upon the kinds of loads linked to your feeders, the switchgear devices are picked for various feeders.
Types of Feeder
- lighting load feeder
- industrial machinery load feeder
- motor feeder
Lighting Load Feeder
This type of feeder is safeguarded similar to industrial machinery load.
Nonetheless, earth leakage current protection is presented in this case.
That aims to lower any damage to life and property, which could be triggered by harmful leakages of fire and current.
Industrial Machine Feeder
This feeder is connected to industrial machinery such as electroplating bath or oven.
They are safeguarded by switch fuse units and MCCB.
Motor Feeder
The motor feeder must be safeguarded against:
- short circuit
- overload
- over current up to locked rotor condition as well as;
- single phasing
Take note:
A feeder is a term utilized in the distribution network.
It could refer to a branch linked to any distribution network node.
It could be in a feed branch.
However, because the standard topology of the distribution network is radiant, the energy glow in many feeders is not directional.
To enhance the reliability of power supply, the structure of the distribution network is very complex.
The transmission of power isn’t totally a direction.
Roughly speaking, the branches within the distribution network could be referred to as feeders.
Distribution feeder circuits are the connection between the:
- input terminals of main circuits and;
- output terminals of a distribution substation
The distribution feeder circuit conductors depart from the substation from the circuit recloser via:
- substation exit cables or
- underground cables
The underground cables connect to close substations.
Thus, it enhances the entire look of the substation.
Various distribution feeder could go from a substation.
It leaves in various directions to serve the customers.
The underground cables are linked to the main circuit through a nearby riser pole.
A feeder is one of the circuits out of the substation.
You see:
The main feeder is the 3-phase backbone of the circuit.
That is often known as the mainline or mains.
The mainline is typically a modest big conductor like 500 or 750-kcmil aluminum conductor.
Sometimes, utilities create the main feeder for 400A.
It often enables an emergency rating of 600 A.