Description

Timer relay NP

Voltage Protection Relay

Near field communication and conventional control relays

 

Timer relay NP

Provides products and services for energy and electricity in the residential, commercial and industrial sectors in different colors.

• Products such as cutters, motors and many other important products in the labor market.
• Comprehensive and competitive range of electrical circuit breaker accessories.
• Ideal for the domestic, retail and commercial sectors.

It is a group of leading companies in the electrical materials sector market. The company manufactures its products, including plugs and sockets, automation systems, automatic fuses, protective switches, combined switches, built-in switches protected against leakage, industrial products of electrical switches, fuse boxes, electrical accessories, and electronic counters.

When it comes to the security of your home and family, trust only the best.

• We protect your family from the fluctuations in electrical currents.
• So that you can enjoy the best times in your home with peace of mind
• Your best choice is what it looks like
• The best choice! There is no worry about the details as it is necessary to achieve a perfect result.
• Made to last and make a lasting impression.
• Widely used to control electrical circuits of automatic control.
• This series of products can be used in all conditions.

Function:

• Monitoring the current in each phase enables the device to operate in the required power range.
• They draw current devices out of the required range, de-energize the system, and prevent device failure.
• The connected current protection relay system is designed with the aim of over-current and under-current protection.
• The current working range can be entered.
• At the same time, only “overcurrent protection” or “undercurrent protection” can also be used.
• The first development in the current engine is high.
• It has a delay start to prevent false overcurrent errors that may occur due to this.
• It enables electrical and mechanical load control.
• Monitors control relays monitors physical and electrical values.
• They measure variable signals such as phase (presence, sequence, and symmetry), voltage, current, and frequency.
• They also control fluid levels and process operating rates.

Timer relay NP

Timer relay NP

Designed to manage simple automation systems, relays, with its unique combination of value for money and ease of use, easy to specify, install and program, suitable for all application profiles.

Flexible, it gives you the choice of two bands:

•  Built-in versions with fixed configurations
• Modular versions allow the use of extension modules with two programming languages.

Made of unbreakable, glossy, thermoplastic polycarbonate, it is made of thermoplastic polycarbonate, and is resilient to withstand harsh impacts and extreme force.

Standard, Optimal, and Universal series of regulated switching mode power supplies are designed to provide the required DC voltage for electrical equipment.

Designed for applications ranging from simple machine control to complex systems requiring state communications and battery backup options.

Power supplies for industrial use, railway installation

Modern look with sleek and smooth design, greatly enhances the look and feel of your room.

But first, we must know what the timer is ( the electric timer) and what is it used in general?

The timer is one of the most important tools used in the field of electrical control, as it automatically connects a circuit after a specified period of time, to operate a load or to deliver electric current to a contactor coil. It is frequently used in control circuits, for the purpose of protecting the components of the inner drum.

The contactor is the heart of the electrical control circuits, so you cannot design an electrical control circuit without the presence of the contactor

The contactor  mainly works on the magnetic effect of the electric current, so that it uses a coil through which an electric current passes, and it generates a magnetic field that works to attract an iron core, which is connected to the ends of the power circuit. Air conditioning, lighting and heating circuits, etc

The contactor  is one of the most important elements of automatic control, rather it is very important. It is a box containing contacts, i.e. switches. These contactors are used in the power circuit to connect a high current, and some are intended to connect to the control circuit through which a small current passes.

Components of the internal timer

1. Timer feed source:  contains different voltages according to its manufacturer such as 220V/AC or 120VA and so on.
2. Electronic board:  Its function is to control the specified time delay.
3. Relay:  Its function is one of the signals from the electronic board at the end of the time delay period, and accordingly the current reaches the relay coil, then the contact points of the relay are changed.
4. Indicator to control the time delay period.

Timer contact points

1. “Normally Closed” NC:  The points are in their normal state closed and open when the specified delay period ends. It can be used by placing a signal lamp to know the change of contact points from NC to NO.
2. “Normally Open” NO:  The points are in their normal state open and closed when the specified delay period ends.
3. Common point:  It is the common point, as it is directly connected to the electric current.

Types of timer

• In terms of internal installation:
  • Motorized timer.
  • Electronic timer.
  • Air timer.
• In terms of working principle:
  • Timer with “On Delay” system.
  • Timer with “Off Delay” system.
  • Flasher Timer.

Motorized timer

Its principle is based on a small internal motor that drives a group of sub-gears by means of a main gear. This gear has a protruding part that is changed by changing the axis of rotation of the timing, as a result of which the protruding part may approach or move away from the point of contact.

Electronic timer

Designing a circuit that contains electronic parts with a relay of small size. Timing is controlled through an electronic element called variable resistance. This type of timer contains multiple capabilities to perform functions.

Air timer

It consists of a spiral bulge with a coil whose opening value changes by means of a grading roller with which the required timing is set.

When it is turned on, the spiral bulge is attracted and air begins to enter through the bulge opening until it is filled and rises to the top until its contact points are changed.

This type is characterized by the fact that it does not need a power source because it does not contain an internal file or drive.

Timer with “On Delay” system

When connected to the mains, the timer counts down until it reaches the specified time, and accordingly the timer contact points change.

Timer with “Off Delay” system

When it is connected to the electric current, the timer starts, and after that the counting that has been set begins, and when the counting is completed, the timer contact points change, and when the current is disconnected at any moment, it works on the counting from the beginning.

Flasher Timer

When the timer is connected to the electric current, it starts counting according to the specified value, and after completing the counting, the contact points change as the counting continues to return to the normal state again, and so on until the electric current is disconnected from it.

An example of this is refrigerator timers, clock timers…. etc.

Therefore, the timer is used in the time control of electrical appliances, lighting, heating, capacitors, and others.

It is used to control electric motors, lighting, heating, capacitors and others.

Intelligence surpasses vision

And we must know what are the relays and their function and the most important types used  ?

Relays are nothing but protection devices through which electrical circuits can be opened or closed, or they act as mechanics to control the circuit breaker when the quantities designed for it change, such as current values, voltage, and power.

relay functionality

The function of electric relays is limited to the following:

• It gives a signal to operate the cutter, and the latter separates the part in which the fault occurred from the network.
• Provide sufficient distinction for the type of malfunction.
• It identifies the part or area where the error occurred, which facilitates the repair process.

Division of relays:

Electric relays can be divided in several ways as follows:

• For contact oil, there are two types:
• Relays work to lock the contact points.
• With regard to the type of electrical quantity that affects it, it is divided into current relays, voltage, capacity, resistance…etc.
• As for the direction of change, the relays are divided into great end relays and small end relays.

Bone end relays are known as the relays that work when the value on which the effect is increased from the value on which it is designed, such as the current increase relays, which work when the value on which the effect is increased from the value on which the relay is designed, and there are of these types the voltage increase relay, and the increase relay Current and relay increase capacity.

As for the mini end relays, they operate when the value reaches, they operate when the affected value reaches a value less than that on which the relay is designed, such as voltage drop relays that work when the voltage value is less than a certain value, and there are these types of voltage drop relays and current drop relays , and power drop relays.

With regard to the effect of the relay on the circuit breaker: the relays are divided into direct effect relays, and indirect effect relays.

Direct effect relays in which the measuring element is mechanically connected to operate the circuit breaker, and indirect effect relays in which the measuring element is connected to an auxiliary power source to control the circuit breaker.

• As for the installation of relays: relays are divided into the following types:
• Solendoid type relay.
• Relay with attracted armature type.
• electrodynamic type relay.
• Relay with moving coil type.
• induction type relay.
• With regard to the relay function, the relays are divided into:
• Voltage drop relays, current or power.
• Relays to increase voltage, current or capacity.
• Directional relays work when the current direction reverses or the power direction reverses.
• Thermal relays.
• Differential relays.
• Distance relays.
• With regard to its operating time: the relays are divided into:
• Instantaneous relays, where there is no wasted time between the moment of operating the relay and the moment of operating the contact points of the circuit breaker.
• Relays have a definite time effect, as there is a specific period of time between the moment of operating the relay and the moment of operating the circuit breaker.
• Relays have an inverse time delay, and in this type, the specified period of time between the moment of operation of the relay and the moment of operation of the contact points of the breaker is inversely proportional to the value of the fault current or any other value that causes the relay to operate.

Types of relays

Electromagnetic relay

There are three types of electromagnetic relays, which are the helical type, the hinged type, and the rotating type.

the use :

Electromagnetic relays are used to protect electrical circuits against short circuits.

thermal relay:

the use :

The thermal relay is used to protect circuits, especially motor circuits, against overload. It is known commercially as overload, and it is characterized by having a time delay because the expansion of the two metals takes some time until the gear can be disengaged, and this prevents opening the motor circuit when the large start-up current passes, which lasts for a while. Simple time, but it protects the motor if there is an increase in the load for a long time.

Thermistor relay

Usage  :

Thermistor protection methods are used in the following cases:

• Motors with a power higher than 2 kilowatts.
• Engines that start moving under difficult conditions.
• Engines running irregularly.
• Heavy duty engines.
• Three-phase motors exposed to work on one side.
• In protecting transformers against overload.
• In monitoring the temperature of any device.

And in the case of engines with high power of the following types:

DC motors – inductive motors of both types use thermistor protection in addition to the load relays in order to give complete thermal protection.

Advantages of thermistor protection:

• It works very precisely.
• It can be installed easily and quickly.
• Suitable for protecting motors against explosions.
• Protects motors against interruption of any of the three faces.
• It has a test switch between manual or automatic operation.

inferential relay

the use :

This type is used to protect variable current circuits against overcurrent, and it is considered one of the most widely used types of relays due to the great diversity in its time characteristics. The relay operating time can be controlled by controlling the distance that the disc moves or by changing the number of turns of the relay magnet coil.

• Dynamotri relay.
• Differential or differential relay.
• Relay to prevent ground leakage in electric cables.
• Low voltage circuit breaker.
• Rayleigh Buechls.
• grounding.
• Lightning rod .

Timer relay NP

• Type: flash timer

Finished plastic – ideal for installation in the office, living room, office and nursery, easy to install in all common wall-mounted boxes

Easy to install, wall mount and use

Flame retardant materials

• High temperature resistance and flame retardant plastic

Super protection:

• It is made of very safe materials, so it is environmentally friendly
• Provides flexibility in installation and ease of installation.

Product benefits

• Combines simplicity of installation, flexibility and durability.
• Meets the requirements of the majority of industrial applications.
• Simple structure, easy to install, easy and convenient to choose
• They provide a solution for industrial applications that require high resistance to chemical agents.
• The classic shape features a simple look and modern feel to reflect your personality.
• The strong and durable surface gives you many years of dependable service.
• Made of high quality thermoplastic material, smooth surface, flame retardant, flexible and durable, can withstand tough impacts and heavy force, long service life.