Electromagnetic starter 220V: application, connection

Electromagnetic starters 220 V are switching devices that are designed to start the engine. They are also responsible for protecting it. The characteristics of electromagnetic starters are quite different.

Some modifications are able to work in a network with alternating current. In order to understand this question in more detail, it is necessary to consider the main types of devices.

Application of single-phase modifications

Starters of this type, as a rule, are used in the industrial sphere. You can meet them on drill as well as milling machines. They are also suitable for motors with short-circuited rotors. The connection of the electromagnetic starter is usually carried out via a conventional relay. In this case, the rectifier will require an open type with high current conductivity.

If you consider an engine at 5 kW, then the output resistance parameter must be at least 50 ohms. In turn, the threshold voltage must be at the level of 25 W. In some cases, the connection of starters of this type is carried out through converters. In this case, the kenotrons are used. They are issued pulse and frequency type. The first option is often used in drive mechanisms. If we consider frequency kenotrons, then they are installed on power supplies.

Device of two-phase models

Models of this type are suitable for engines with manual starters. The 220V electromagnetic starter is connected to the DIN rail through a single-pole transceiver. The expander will be required with broadband transistors. In some cases, dinistors are used.

If we consider engines of small power, then you can connect the starter without an expander. In this case, the output resistance is around 30 ohms. On average, the threshold voltage on the winding does not exceed 15 W. For safe use of the starter, insulators are used.

Connecting three-phase devices

Models of this type are able to work only in a network with a direct current. Suitable is a three-phase starter (electromagnetic) 220V for motors with short-circuited rotors. Also, devices are actively used for drilling machines and various presses. On average, the threshold voltage does not exceed 20 W. For protection systems, the starters are quite different. For the safety of the device use zener diodes.

If we consider a standard motor with a rotor of 3 kW, then the connection is made via a relay with a current conductivity of 5.7 microns. On average, the output resistance is 45 ohms. If we talk about engines with a power of 10 kW, the connection of the starters occurs with the participation of powerful dinistors. It is also important to note that insulators are used with winding. The threshold voltage parameter is equal to 30 W. In turn, the output resistance of the circuit does not exceed 15 ohms. It should also be noted that the height of the overload depends on the class of the engine protection system.

Models for synchronous motors

Starters 220 V for synchronous motors are manufactured with terminal boxes. Appliances are used in presses and machine tools. The standard starter connection scheme involves the use of a single-pole transceiver. Rectifier in this case is rarely used. If we talk about an engine at 5 kW, then the transistor is selected as an expansion type. In this case, the output resistance of the starter does not exceed 40 ohms. In turn, the threshold voltage is at the level of 35 W. As a rule, the overload indicator does not exceed 3.5 A.

If we consider engines with 15 kW, they are connected only via commutated expanders. As a rule, they are sold with high throughput. In this case, the limiting voltage on the winding oscillates around 40W. In turn, the output resistance does not exceed 14 ohms. The overload indicator depends on the motor protection system.

Application of starters of asynchronous motors

Starters for asynchronous motors are available with movable and fixed contacts. Typically, the device is connected through a low-conductivity modulator. In this case, the relay is not used. The threshold voltage parameter does not exceed 10 W. In turn, the output resistance on the winding is at least 20 ohms. However, it is important to consider engine power.

If we talk about the modifications to 5 kW, then to stabilize the device using kenotrons. Some starters are equipped with dinistors, which are fixed to the terminal boxes. In this case, the threshold voltage parameter is approximately 40 W. In turn, the output resistance is equal to 35 Ohm.

Features of high-voltage engine startup models

Starters of this type are manufactured only with movable contacts. The scope of the devices is very extensive. Many modifications are connected to the motors through the terminal boxes, which are located at the bottom of the structures. To stabilize the control process, zener diodes are used. If we talk about starter with a protection system, then they use insulators.

ABB Series

The starter (electromagnetic) 220V in this series is characterized by a high overload parameter. Applicable only to induction motors. For the drive mechanisms, the models are ideal. The modification is connected directly via a low-conductor relay. Rectifiers are most often used in an open type. For controlling the motors, commutated expanders are used. If we consider a motor at 8 kW, the threshold voltage parameter fluctuates around 22 W. As a rule, the output resistance does not exceed 12 ohms.

Device for starting "Schneider"

The starter (electromagnetic) 220V of this type is able to operate in a network with a direct current. The overload parameter is 20 A. If we talk about 5 kW motors, the device is connected via a relay. Dinistor can only be used in the expansion type. After fixing the terminal box, the insulator is fixed. It is worth this electromagnetic starter (market price) in the region of 16 thousand rubles.

Devices for sea vessels

The starter for marine vessels is distinguished by contact with wire plates. In this case, the transceivers are used with the plates. Modulators of the orthogonal type are used to connect devices. Insulators are necessary for stability of work.

The kenotron on the starter (electromagnetic) 220V is suitable only for impulse type. If we talk about medium-power engines, then the threshold voltage index fluctuates around 40 W. Immediately the output resistance is about 22 ohms. The overload indicator depends solely on the degree of motor protection.

Modifications to 25 A

The electromagnetic starter 220В 25А is produced, as a rule, with movable contacts. Many modifications are equipped with high-quality protection systems. Suitable devices for synchronous motors of different capacities are suitable. If we consider a configuration of 5 kW, then the connection is made via a conventional relay. Zener diodes are used to protect the device.

In some cases, compact modulators of the orthogonal type are used. If we talk about engines of high power, then the relay should be taken with the transistor. In this case, a di-nistor will require a high-wire type. On average, the threshold voltage parameter is not more than 30 W. The output resistance of starters of this type does not exceed 14 ohms.

Specifications of 40A models

The electromagnetic starter 220V 40A on the market is common. Terminal boxes in many modifications are made with a protection system. The capacity of the devices fluctuates around 5.5 microns. For connection of the device terminal boxes with contacts are used. If we consider the configurations for the collector motor, the relay can be used with low current conductivity. In this case, the output resistance will be at least 15 ohms. In turn, the threshold voltage is equal to 35 W.

If we consider modifications for stepper motors, then the expansion dinistors are used to connect the devices. In this case, the relay is used with a high current conductivity of 6 microns. The output resistance in the circuit fluctuates around 40 ohms. The threshold voltage, in turn, does not exceed 28 W.