3 Phase Star Delta Motor Connection:
This Diagram shows 3 Phase Star Delta Motor Connection. In this circuit, we use magnetic contactors, MCB, switch, timer, indicator, etc. This circuit diagram is very simple and easy to make. If you want to know more details about this circuit please check our youtube video below the post. Please stay with our website for more updates about electrical electronics and robotics projects gadgets and circuits.
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Diagram of 3 Phase Star delta Motor Connection:
Components needed For this Project:
You can get the components from any of the sites below:
- 3 Phase Motor (5 HP) [See Buy Click Amazon]
- 8 Pin Timer 220V AC [See Buy Click Amazon]
- Push Button NO Switch [See Buy Click Amazon]
- Push Button NC Switch [See Buy Click Amazon]
- DP MCB 20A [See Buy Click Amazon]
- TP MCB 32A [See Buy Click Amazon]
- Indicator Light 220v AC [See Buy Click Amazon]
- Magnetic Contactor 40A [See Buy Click Amazon]
*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!
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Components used to make the 3 Phase Star delta Motor Connection:
01. 3 Phase Motor:
A 3-phase electric motor uses a 3-phase Power Supply to Convert Electric Energy into Mechanical Energy. It contains four Wires (Three hot Wires and one Neutral Wire) and Uses 3 Alternating Currents of the Same Frequency. Since it Generates a Rotating Magnetic Field, it does not need a Capacitor for the Startup. Some 3-phase Motors are Reversible, Which Means they can serve as Generators by Turning Mechanical Energy into Electrical Energy.
02. Timer:
A timer is a type of time-switching device that controls and controls Electrical circuits and electrical and electronic devices through time setting (on/off). The timer is basically 8-pin. Like other controlling devices the timer has a coil and when this coil is magnetized, the timer works on/off. The timer has 2 common ends and each common end has normally close and normally open options. When the timer is set by time, the timer trips at the end of that time and turns the common is normally closed (on) to open (off) and normally open (off) to close (on). This is how the timer works.
03. NO Switch:
NO (Normally Open) Terms Refer to a Type of Dry Contact or Wet Contact. A Push to Make Switch Allows Electricity to flow Between its 2 contacts when held in. When the button is released, the Circuit is broken. This type of Switch is also known as A Normally Open (NO) Switching system. As its name implies, a Normally Open (NO) Switch Contact or “a Contact” is a Switch. Put very simply, a Normally Open Sensor will have no Current When in a Normal State But When it Enters an Alarm State it will have +5V applied to the Circuit.
04. NC Switch:
NO (Normally Open) Terms Refer to a Type of Dry Contact or Wet Contact. A Push to Make Switch Allows Electricity to flow Between its 2 contacts when held in. When the button is released, the Circuit is broken. This type of Switch is also known as A Normally Open (NO) Switching system. As its name implies, a Normally Open (NO) Switch Contact or “a Contact” is a Switch. Put very simply, a Normally Open Sensor will have no Current When in a Normal State But When it Enters an Alarm State it will have +5V applied to the Circuit.
05. DP MCB:
DP MCB In 2 Pole MCB, switching & protection is affected in phases and the neutral. A Double Pole or DP Switch is a Switch that Controls 2 Circuits at the same time. In terms of Residential Switching, this Normally means it Switches the live and Neutral at the same time. In Layperson Terms, Double Pole switches or DP Switches are Exclusively Designed to Control 2 Different Electrical Circuits at the same time, which allows the Appliances to Isolate safely and reliably. Fan or light Combinations and Medical Equipment are some of the many applications for DP Electrical Switches and Electrical components.
06. TP MCB:
The full meaning of MCB is Miniature Circuit Breaker for TP MCB. MCB is an electromagnetic switch or device. If for any reason a short circuit occurs in the supply line or load line (line to line or line to neutral) or in case of overload MCB. the MCB automatically trips and disconnects the main line circuit or household power supply Connection. TP MCB In 3 Pole MCB, Switching & Protection is affected in only 3-Phases and the Neutral is not part of the MCB. 3 pole MCB signifies the Connection of Three Wires for a 3-Phase system Red-Yellow-Blue Phase. 3-Phase Supply Only Without Neutral.
07. Indicator Light:
An indicator lamp just Sounds Technical, Sometimes it is called a Supervisory light Indicator. Indicator lights are amber in color and can be located at the Front, the Rear, and Sometimes at the Side of the car on both the left And Right-hand sides. The Common colors used by Indicator lamps are red, yellow, blue, white, and green line system. A Panel Indicator Lamp Generally has up to 5 Differently Colored Segments to Indicate Various Conditions on the Machine or Process system.
08. Magnetic Contactor:
A magnetic contactor is an electromagnetic switching device. It is generally used for controlling 3-phase Motors. The operation of a magnetic contactor is similar to that of a Relay. but a relay is used for low-power or low-voltage connections, and a magnetic contactor is used for high-power or high-voltage connections. As soon as the supply is applied to the magnetic contactor coil. its normally open contacts are closed and normally closed contacts are opened and the associated devices are also operated. This is how a magnetic contactor works.
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Frequently asked questions
If a 3-phase motor has six wires at the terminal box it can be connected in star or delta, the voltage suitable for each option would be on the nameplate. If there are only three wires then it is only suitable for one voltage which would also be on the nameplate.
The line current of the 3-phase delta connection is √3 times of phase current i.e. IL = √3 IPh. The phase current flows from any one line to the load whereas line current flows from any one line to the whole three-phase system through the load.
The line current of the 3-phase delta connection is √3 times of phase current i.e. IL = √3 IPh. The phase current flows from any one line to the load whereas line current flows from any one line to the whole three-phase system through the load.
In a line current of 400V, the electrical motor will have a star connection. If the electrical device motor indicates 400-690V, each winding could have a maximum capacity of 400-V, and in a line current of 400-V, the electrical motor could be delta-connected.
An advantage of the Delta connection is higher reliability. If one of the 3 primary windings fails, the secondary will still produce a full voltage on all 3 phases. The only requirement is that the remaining 2 phases must be able to carry the load.
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