Saturday, February 1, 2020

This post is about the forward reverse dc motor using relay. In this post I am sharing a diagram in which a dc motor forward reverse connection is done with double pole double throw relay. For this type of connection you can also use the double pole double throw switch. However in next I will share diagram of forward reverse dc motor using DPDT switch.
In the diagram DPDT relay coil is 12 DCV. This relay is also available in 24 DCV, 120 ACV, 220 ACV. You can use it also. However in this diagram only the 12 DCV electromagnetic relay use. A 12 Volts battery is shown which is used to power the dc motor and relay.

Forward Reverse DC Motor Using Double Pole Double Throw Relay 

forward reverse dc motor using relay

In the above forward reverse DC motor using relay (double pole double throw relay) wiring diagram. two one way switches used. A switch is used to turn DC (direct current) motor forward and reverse. And the second switch which is connected in the way of positive wire is used for switch on/off the motor.

Also Read
DPDT Relay Wiring Diagram

Thursday, January 30, 2020

This post is about the double pole double throw relay schematic diagram. In this post you will complete learn about the working of double pole double throw relay, also known with name of the DPDT relay. Basically a double pole double throw relay is a electrometric relay which two common points, 2 normally close and 2 normally open points. Also 2 coil connection points.  The relay is used for many things, like controlling AC/DC loads, automatic switch, as changeover for generator or double electric supply, DC motor forward reverse, AC single phase motor forward reverse and so on....

Double Pole Double Throw Relay Schematic

DPDT relay is available in different shapes and types according rating coil voltage and contacts amperes. A 8 pin finder or glass type relay is also a type of dpdt relay. Here I shown a dpdt power relay with diagram.

double pole double throw relay schematic

In the above double pole double throw relay schematic diagram. I shown a power relay with schematic diagram. Also a 8 pin glass finder types relay with also a dpdt relay with diagram. In the diagram A1 and A2 is coil terminals of electromagnetic relay. The 1 terminal is common which is normally close with 2 and normally open with 3. The 4 is common and normally close with 5, normally open with 6. Here some more diagram which help you more...

Also read:

14 pin relay with wiring diagram
Staircase timer connection with relay

Note that DPDT Relay can be in different shapes and can be used for different controlling. The small type of double pole double throw relay mostly used for controlling other relay like magnetic contactor. (Also this relay can work as auxiliary contacts with magnetic contactor). And the big size DPDT relay, also know with power relay is used high load according relay ratting. If the relay is 30 Ampere then we can easily control single phase load with is less than 30 ampere. However we will further talk about this..... This post is only about the double pole double throw relay schematic diagram.

Thursday, December 12, 2019

After this post you will complete learn "how to make UPS inverter at home diagram". In this blog i also share how to connect the UPS to battery or batteries. How to wire the ups for home wiring. Or how a UPS inverter wiring. In this post i will teach you how to make ups inverter at home. There are different types of UPS / inverter are available in market. And you can buy it from any offline or online markets according you load.

How to make a UPS/Inverter at home

In the market the circuit is available which also use for making a UPS in home. In this post i am sharing a complete UPS internal wiring diagram. In which the controlling kit, UPS module, UPS transformer, outlet, fuse, on/off switch etc are shown.

In the below "UPS/inverter how to make diagram" all the connection shown step by step

how to make ups inverter at home diagram

In the above UPS/Inverter transformer, the transformer bobbin size is 2'' x 3''. The 19 SWG and 11 SWG used in coil.  The Winding turns and winding formula shown in above diagram. I hope after this diagram now you will be complete understood the complete UPS (uninterruptible power supply) wiring. This below articles and diagrams also help you..  Note that this is a Desi UPS wiring diagram.

Also read...
How to connect ups to battery
how to connect ups to two battery
how to wire solar panel in series connection
how to connect solar panel in parallel connection
how to wire ups for home wiring with solar panel and solar charge controller

Wednesday, July 10, 2019

This post is about the dol starter diagram. As you know that dol starter is a starter which contain a magnetic contactor, overload protection relay and NC/NO push button switches. I also share the dol starter wiring diagram. In which I shown the MCCB circuit breaker (molded case circuit breaker) magnetic contactor and thermal overload relay and complete controlling and power wiring. In the today dol starter diagram. I will only shown the symbol type diagram. This diagram contain the complete wiring of a direct online starter.

DOL (Direct Online Starter) Wiring Diagram

In the above dol starter diagram. The R,Y,B is the three phase 380 volts supply. The coil of the contactor is 380 VAC. And the normally open and normally close push button shown. the contactor connection with thermal overload relay and the motor connection with overload relay is shown. Also the earth connection is provided to the motor.

Wednesday, June 26, 2019

3 phase current transformer wiring diagram for 3 phase load (ampere) testing. As you know that we use the current transformer to measure the current. For testing the current (ampere) running to load we use two types of amp meter. In which one series type which is wired in series between load and supply. And 2nd is a current transformer type which is wired with a current transformer to measure the current. We can wire a current transformer for single phase and also for 3 phase. The current transformer is always used for line ampere testing. For 3 phase system ampere testing every Line have their own current transformer. And these current transformers further connected with 3 ampere meter or one ampere meter and ampere testing selector switch.

For better understanding also read below

How to wire current transformer with digital ampere meter
Ampere meter selector switch wiring with current transformers

How to 3 phase current transformer wiring diagram with ampere meter

Note that if your ampere meter is 100/5A then used only 100/5A ratio current transformer. In the below 3 phase current transformer wiring diagram with amp meter. 3 CT coil, and Amp testing meters shown. The current transformer wiring for each meter.

3 phase current transformer wiring diagram

You can wired the current transformer for three phase system as shown in above diagram. However if you want testing 3 phase ampere with only one ampere meter. Then use ampere selector switch with current transformer. For that you need to wire the all 3 current transformer with amp selector switch. And from the selector switch the two wire supply will goes to ampere meter. From the selector switch you can test at each line(phase) ampere.