Start of the electric motor. The device of smooth start of electric motors

Soft starters motors belong to the class of combinations of instruments. The main task they considered to be the power distribution. They also help to control motor power. To ensure continuous operation of the motor they fit perfect.

If necessary, mains they will shut off pretty quickly. To date, soft starters are used extensively in industry. In particular, the model can be found in drilling and milling machines. For lift stations, such devices are suitable.

Layout of the standard starter

The Standard scheme of soft starters the motor is a set of contacts. By changing their position, changing the input voltage. The core models are often set by the pulse type. Electric coil devices are contacts.

In this case, the thermal relay used with low and high frequency. Leads for connection of equipment shall be provided two. Directly the movement of the contacts is effected through the springs. Control units there are a variety. Terminal models are usually located under the bottom cover. The filter gain is established not on all the starters.

Single-phase modifications

Single-phase device that provides a start of the electric motor (the starter), the design is very simple. In this case, the coil is selected with the primary winding. Open models is not more than four units. In this case, the core is located under the coil. Directly thermal relay frequency required to hold not lower than 55 Hz.

Recommended

The most effective methods of seed germination

Despite the fact that the method of seedling in vegetable production is a very time consuming process, it is used by most gardeners. Planting seeds in open ground is an easy and convenient method, but it is effective only in certain climatic zones. I...

Retro-reflective paint. The scope of

When the vehicle began to fill the road, their popularity began to gain reflective paint. Thanks to this paint, as drivers and pedestrians becomes much easier to avoid accidents in the dark. Purpose paint Reflective paint – paint material, whic...

How to make icon with your own hands - options izgotovleniya (simple and complex)

In Soviet times, many collecting badges, emblems, pennants. To get them was not easy. And today, thanks to technology, you can make them yourself. Knowing how to make icon with your own hands, and you can make original gifts to your friends, and make...

Leads for connection to the engine in devices there are two. Spring models use flat. Depending on the control units dimensions starter change. Some modifications are equipped with controls of sensitivity. Terminal they are located near the bottom panel. Applied soft starter single-phase motor often for industrial machines.

Device biphasic models

Two-phase device that provides a start of the electric motor (the starter) was produced only with a pulse core. In this case the thermal relays are set low frequency. Directly contact models can be up to four units. For phase change using a trigger. Also, many devices are installed filters gain. Connect model via pins on the rear panel. The terminals of such devices are positioned above the top plate. The control units often are available with sensitivity adjustment. To meet the two-phase model on the trade can often. For milling equipment, they fit well.

Modifications of the three-phase type

Soft starters three-phase motor working by changing the position of the contacts. The coil in this case many models are for cores. A series of open contacts is mounted on a special platform. The findings of the three-phase starters can be above the control unit. However, most often, they are located at the rear.

Directly the thermal relay in such devices are 60 Hz. The sensitivity adjusting equipment is possible due to leverage. The trigger mechanism is mounted above the core. To date, three phase starters often work with marine engines.

Models for synchronous motors

A Synchronous device that provides the start of electric motors (soft starter), is distinguished by its low frequency. This is achieved through the use of cores enclosed type. The coil in these models, the input voltage required to maintain at the level of 200 In.. the Thermal switch mounted on the top plate. System circuits located on both sides of the core.

To increase the sensitivity of the device uses a special controller. Terminal models can be mounted at the top and back of the panel. The filter gain are used quite rarely. The triggers are set often.

Starters for asynchronous motors

To date, the asynchronous device that provides the start of electric motors (soft starter) shall be applied with different models. Inductor models are set at 220 and 300.. In this case, the cores are often used open type. The average parameter bandwidth they have up to 5 MP. However, the market is presented as the core of the pulse type. They differ from other models of increased sensitivity. Thus they wear out extremely slowly and is capable of long time to work out. Open contacts in devices are at the upper plate.

Thermal relay are set exclusively by low-frequency type. The output voltage is the minimum they are required to maintain at the level of 230 V.. the Connection of many models isthrough insights. To change the position of the lower spring contacts are used. Set often they are not large diameter. Control units all devices are equipped with interlocks. Controls sensitivity is also present in all configuration. The type of trigger models are quite different. If we consider the soft starter asynchronous motors with the coils 220, they often have wave type. However, the phase analogues also available in the market.

Special attention deserves such devices trigger. As a rule, it consists of sets of conductors. Nowadays, the most common are the modifications on four pins. If we consider the model with an inductor 300, in this case the triggers are always used phase type.

Features of models of high-voltage start engine

The high-voltage Contactor of the type widely used in the nuclear industry. The coils of such devices are often mounted on a 300.. the bandwidth Setting is around 5 MP. Direct contacts are movable, and not movable. The core set pulse, and condenser type. They differ among themselves in terms of sensitivity. To date, the more reliable is considered to be the pulse modification.

Thermal relay for devices like low-pass only. Parameter operating current in the system reaches 5 And.. To adjust the plates used flat spring. The control units in starters are available with locks, and without them. The trigger mechanisms are often installed on the three conductors. Filters gain in this case is used very rarely.

Special attention in devices deserves the type of triggers. If we consider low frequency devices, they are matched to the wave type. With decreasing sensitivity of the instrument they are coping well. Connect the soft starter high-voltage circuit through motor findings. Often they are located on the upper cover.

Model series ABB

The starter motor ABB is characterized by the presence of the phase trigger. Their advantage over the wave modifications lies in the ability to cope with electromagnetic interference. Thus, the engine operates more stably, and the momentum of support is always at the right level. The filter gain can be found only in the low-voltage devices type. Plate models are fixed on flat springs. Triggers are installed on the control units. Directly frequency a user is able to control with a lever.

Inductors such devices are installed ABB series 200.. Contacts are located on both sides of the plate. Cores are often closed. As a result, the wear on them is extremely small. Thermal relay can be seen as step by step or a reference type. Conclusions the devices have only two. Used models of this type can only in networks with alternating current. In this case, the parameter output voltage must not exceed 220 V.. In turn, the level of the ultimate toga max may be 6.

Device to start Schneider

The soft starter Schneider motor equipped with a coil on 230 V.. Load it to a maximum of able to withstand a 6.. But In this case, the network of open contacts is located near the thermal relay. The core of the model set the pulse type. Parameter bandwidth is maximum of 6 MP. The thermal switch is installed immediately under the plate. The outputs of the model are available with the terminals. Movable contacts in the system are mounted on flat springs. The control unit provided in the device as the default.

Lock it there. The trigger mechanism is mounted on four pins. The filter gain in the starter is not provided. However, to adjust the frequency of a lever. Trigger set phase type. It is mounted in the device above the floor plate, next to the movable contacts. Suitable device for controlling synchronous motors.

Devices for marine vessels

Models for Maritime vessels include a core of open type. Directly coils are set at 300.. Overload device to soft start the motor max must withstand at 6 a.. Setting the bandwidth of such modifications up to 7 MP. To connect models are special insights. Often they are installed above the core of the plate.

Control Blocks for protection can be equipped with interlocks. The trigger mechanisms on the device are quite different. If we consider the low-frequency models, they are often mounted on a four conductor. In this case, the terminals should be near the core. Sensitivity in models of this type is not adjustable. Filters gain are only in the starters with the wave triggers. Movable plate in devices installed near the heat relay.

Modular models for nuclearenergy

The Device for the nuclear power industry are equipped with reliable systems of protection. Only plates with the contacts at the instruments there about five. The coil devices are mounted very different. In some cases they are mounted on the back. Outputs for connecting devices there are two. Thermal relays are often used low-frequency type. In this case, the cores are only suitable impulse.