Before uttering a single word about electrical distribution equipment, I would like to tell you that it is a part of the electricity delivery system.
Steps in the Electricity Delivery System
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The power generation system
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The electric power/current transmission system
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The electric distribution system
Such clarification in advance can save you from many confusions.
According to Wikipedia, “Electric power distribution is the final stage in the delivery of electric power.” It means high voltage transmission current passes from the transmission grid to the low-voltage distribution grid by stepping down with the help of substations that exist between two systems and eventually reaches the final consumers for different levels of demands.
Consumer Categories of Electric Distribution System:
We can divide electricity customers into three categories, such as:
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High voltage sub-transmission consumers for 26 - 69 KV demand.
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Medium voltage primary consumers for 4 - 13 KV demand.
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Low-voltage secondary consumers for 120 - 240 V demand
Types of Electric Distribution System Designs:
There are three basic types of distribution system designs found in the industry.
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Radial Electric Distribution System
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Loop Electric Distribution System
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Network Electric Distribution System
Outline of Electrical Distribution Equipment
A typical electrical distribution system needs the following essential equipment to carry electricity at the end-user points in safe and secure ways.
#1 Electrical Distribution Equipment – Transformers
The prime function of the transformer is to step down high voltage coming through the supply line to a different level of voltage requirements in the electrical distribution system.
For the sake of simplicity, we can divide transformers into three types based on their power rating.
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Sub-station type
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Distribution type
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Current & potential type
However, these transformers may have a different cooling system; liquid or oil-based cooling & dry or air-base cooling. So, the final categories would be:
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Dry & liquid sub-station type
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Dry & liquid distribution type
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Dry & liquid current & potential type
Apart from power rating and cooling, there are insulation, winding connections, and voltage regulation like parameters also used to categorize electric power distribution transformers.
#2 Electrical Distribution Equipment – Circuit Breakers
The circuit breaker is a piece of protective equipment that exists in the electrical power distribution system. It can cut off the electrical power supply automatically (also manually) whenever any fault occurs in the system.
Based on the different level of current in the system, we can classify the circuit breaker equipment in the following types:
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High voltage circuit breaker equipment.
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Medium voltage circuit breaker equipment.
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Low voltage circuit breaker equipment.
#3 Electrical Distribution Equipment – Relays
Relays in an electrical distribution system are a kind of circuit breaker to prevent damages from faults that occur within the system. At present, the following types of electrical relay equipment are found in the Canadian market.
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Electromechanical
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Solid-state
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Reed
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Digital (numerical)
Connection Equipment
There is numerous connection equipment found in the power distribution system in Canada. For the sake of clarity, I would like to classify them in the following categories based on the types of sub-distribution systems.
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Sub-transmission connections
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Primary connections
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Secondary connections
The next sections describe the common occurrence of different connection equipment in a power distribution system.
#4 Electrical Distribution Equipment – Panelboards Canada or Switchboards Canada
The distribution panelboard fundamentally provides total control over the power distribution system through a control room.
Therefore, you may find MCCBs, various power control equipment, relays, and power meters housed in confinement or room.
#5 Electrical Distribution Equipment – Bus Ducts or Busbars Toronto, Canada
The prime function of buses or busbars is to carry large currents, as well as distribute that current to multiple circuits within equipment like switch gears. The busbars are designed with uncovered (copper) conductor wires or rods, which are supported with insulators for the sake of safety and security besides preventing current leakage out of the system.
Totally enclosed busbars need a ventilation system around and used at different levels of the electrical distribution system.
#6 Electrical Distribution Equipment – Switchgears Canada
The primary function of electrical switchgear is to control and regulate the entire power distribution system at different levels. Therefore, you can notice different types of switchgear Canada in the inventory of Surplus Electrical.
Here, you will find different power switchgear for indoor & outdoor applications and secondary devices for monitoring and control. For instance, circuit breakers & disconnect switches, primary bus conductors, interconnecting wiring, support structures with insulators, & enclosures.
#7 Electrical Distribution Equipment – Power Cables
High voltage and medium voltage transmission wires or cables are usually made of high-quality steel wires to withstand various tensions in overhead wiring/cable systems. Low-tension transmission systems are using copper and aluminum like conductive metals for electric current. Moreover, those are insulated with synthetic plastic or a mix of rubbers like non-conductive materials. So, they can dig underground in densely populated areas.
#8 Electrical Distribution Equipment – Insulators
As its name suggests, insulators in the electric power distribution system used to insulate live conductors of power distribution equipment at different levels of voltages. They act with reference to the ground structure supporting the distribution system and also give mechanical support to the various equipment in the distribution system. Insulators equipment in the power distribution system is usually made of porcelain-like electrical non-conductive materials.
#9 Electrical Distribution Equipment – Distribution lighting Arrester Canada
Lightning and network protectors are prime safety measures against natural lighting phenomena. Charged clouds above (in the sky) the electric distribution system can damage the system itself and personals around because high raised electrical poles and transmission wires can attract natural lighting easily and are prone to be a victim of its hazardous impacts.
Lighting arrestors used to install between the lines and earth near the distribution equipment.
#10 Electrical Distribution Equipment – Grounding
The electrical power earthing or grounding equipment can be divided into two main categories:
Power system grounding:
The power system grounding is meant to control overvoltage by providing a path to ground-current flow. So, it can save the system and personals upon the occurrence of any fault or natural lighting in the distribution network.
They are three types of power system grounding used in the industry; solidly grounded, resistance grounded, and ungrounded.
Equipment grounding:
The equipment grounding used to devise an effective electric conductor system that allows the flow of current to the ground whenever any fault occurs in the distribution equipment. It also prevents the system and people from natural lighting incidents and static discharges, causing arcing and various thermal distress in electrical equipment in the distribution system.
Electrical Distribution Equipment in Canada at Surplus Electrical
Surplus Electrical is a perfect destination to get the best bargaining and superb services for your B2B and auction deals. The following are some short-listed Electrical Equipment Toronto to meet your diverse requirements for Electrical Distribution Equipment.
600v Transformer Canada
Hammond 480/277 To 208 300KVA NMK300BK
Distribution Panelboards Canada
Pyramid Temporary Power Panels 200 Amp 600 Volt 3 Phase
Switchgears Canada:
Square D 1200A 347/600V 3P4W Service Entrance Board
Circuit Breakers in Toronto, Canada
ITE EQ270U 2 Pole 70 AMP Push on Breaker
Bus Ducts in Electrical Distribution System Canada
Square D PQ4210G 240 Volt 100 AMP 3P4W I-LINE Bus Duct Plugin Fused
