Gate-type arresters are used in electrical circuits. These devices are necessary in order to prevent atmospheric overloads. Also, surge arresters and surge arresters are able to deal with switching interference. The devices are installed mainly behind the insulators. The main parameters of the arrester should include the voltage class and rated frequency.
Breakdown overload in devices is very different. If we consider stationary modifications, then the rated voltage is taken into account . An average valve arrester costs 15 thousand rubles.
The device and principle of operation of modifications
A standard gate arrester includes a resistor and capacitor banks. Drives are most often mounted on top of the structure. The drive units are of low impedance type. It is also worth noting that there are devices with special locking plates. In pulsed conductivity, they are quite different. Many modifications work from the module.
The principle of operation of a valve arrester is based on current conversion. First of all, voltage is applied to the plates. Resistor is responsible for magnetic interference. The capacitor unit passes current through itself in only one direction. The whole conversion process takes place in a modulator. The output is an alternating current with a frequency of at least 20 Hz.
Device types
By design, switching and low-voltage devices are distinguished. At substations tubular modifications are used. Switching devices are distinguished by a high frequency. In this case, the rated voltage of the modifications is located at 300 V. Protection systems are used in different classes. Low-voltage devices are suitable for transformers of the RK series.
The operating frequency is at 55 Hz. Tubular devices are used in alternating current networks. For transformers of the PE series, magnetic modifications are suitable. Stationary devices are allocated in a separate category. The rated voltage parameter can reach up to 340 watts.
Switching models
Switching arrester is great for power plants of different capacities. Discs in this case are highly conductive. If you believe the experts, then the sensitivity of the capacitor units reaches 30 mV. Many models use a diode block, which prevents burnout of the module.
Directly resistors are used, as a rule, of the wave type, the pads are installed a small height. For transformers of the RK series, these arresters are not uniquely suitable. There is a quality modification within 14.500 rubles.
Low voltage arresters
A low voltage arrester is good because it is not afraid of magnetic interference. The drive uses a low frequency. In this case, the rated voltage lies in the range of 100 - 200 V. Many modifications are able to boast of high conductivity and low residual voltage. It is also worth noting that the devices are great for transformers of the RK series.
The arrester protection system is mainly used in the ME40 class. Working humidity is in the region of 90%. Atmospheric overloads in this case, the electronic circuit is not terrible. For KE series transformers, arresters are not suitable. Capacitor units are used low power. A user can buy a high-quality arrester at a price of 8 thousand rubles.
Tubular modifications
Tubular and valve arresters are similar to each other. In substations, they are quite common. The main feature of the tubular modification lies in the low conductivity. It is also worth noting that the operating frequency lies in the range of 40-50 Hz. Many modifications are suitable for KE series transformers. Security systems are used in different classes.
Breakdown voltage, as a rule, does not exceed 500 V. The operating humidity of the arrester is not more than 80%. They are not afraid of atmospheric overloads, the case is perfectly protected. Nozzles for devices are used mainly of a combined type. Pads in this case are used quite rarely. Disks are mounted a short distance from each other.
Modifications with two capacitor boxes are very rare. Their average capacity is 500 microns. Quite often, the rated voltage does not exceed 450 watts. Protection systems of the Kyrgyz Republic are rarely used. Dipole type resistors are definitely not suitable for modifications. The price of a good arrester ranges from 14 to 20 thousand rubles.
Long Arc Models
The surge arrester with an elongated arc may only be used in an alternating current circuit. Many experts say that the modifications have good output conductivity. However, problems with negative polarity occur infrequently. Protection systems are mainly used in the PK40 class. The operating humidity of the arresters is in the region of 90%. Atmospheric overloads for these devices are not scary.
For RA series transformers, these modifications are not suitable. If we talk about the parameters, it is important to note that their rated voltage is not very high. In this case, the maximum frequency is 66 Hz. Pinched blocks are of different conductivity. Drives are generally mounted on top of the structure. The capacitor unit volume fluctuates around 50 pF. You can buy a high-quality arrester in a specialized electronics store for just 15 thousand rubles.
Features of stationary arresters
Stationary arresters can be used on KE series transformers. Security systems for models are used in different classes. If you believe the opinion of experts, then their conductivity averages 120 microns. Quite often, devices are made with padded discs. Many models boast high sensitivity. It is also worth noting that capacitor units are used with and without converters. The maximum capacitance value is 50 pF.
Stationary-type arresters are excellent for working on AC networks; atmospheric overloads are not a problem for them. Resistors are typically dipole-type. The voltage class depends on the modulator. Some modifications are allowed to be used on transformers of the PK40 series. Capacitor boxes are used low power, but there is a filter for magnetic interference. The user is able to purchase a good arrester at a price of 30 thousand rubles.
Parameters of magnetic modifications
Valve magnetic arresters are manufactured with one or more adapters. The rated voltage is about 500 V. Devices without filters are very rare. Indicators are used only dipole type. In this case, capacitor boxes are installed in different sizes. Very often, magnetic arresters are operated on low voltage transformers. The operating frequency in this case is maintained at around 50 Hz. Devices are not suitable for operation in a direct current circuit.
The breakdown voltage parameter is not very high. Valve arresters are tested using wired testers. The working humidity of the modifications is at the level of 60%. Quite often, devices are installed on bushing insulators. The plates are attached to them both in the upper and lower parts. A user can buy a good arrester at a price of 15 thousand rubles.
Features of devices of the PBO 12 series
The rated sportsman valve of this series is used at transformer substations to prevent atmospheric overloads. The indicator of nominal voltage is 300 V. According to experts, the device is not afraid of problems with negative modulation, this modification has a dipole filter. If we talk about design features, experts note the low location of the drives. Central adapters are located near the modulator. The capacitor box operates at a frequency of 30 Hz. In this case, its capacitance is 5 pF. The breakdown voltage of the device is 500 V.
The protection system is used in the class PK50. According to experts, the device is not suitable for high voltage transformers. The switching interference of this model is not terrible. However, it is important to note that the central conductor in some cases burns out. At the same time, the operating humidity of the arrester is at the level of 30%. You can buy a model of this series from 20 thousand rubles.
Characteristics of arresters RVO 10
The rated sportsman valve PBO 10 is interesting in that it has two modulators. The frequency in this case is controlled by the module. The conversion process of a spark gap does not take much time. Most experts claim that this unit is great for transformers of the RK series. At the same time, the protection system is used in high quality, and the working humidity is at the level of 60%. A user can buy a spark gap valve PBO 10 at a price of 18 thousand rubles.
The difference between the devices of the PBC 35 series
The rated sportsman valve PBC works in a direct current circuit. Only suitable for PE series transformers. Conductivity on disks is quite high. Also, experts say that the current conversion process does not take much time.
Capacitor unit is used high capacity. The sensitivity of the module is located at around 50 mV. For transformers of the KE50 series, the modification is not suitable. The operating humidity of the arrester is at around 60%. The user is able to purchase this modification at a price of 22 thousand rubles.
Features of devices of the PBO 40 series
The valve arrester of the presented series has a lot of advantages. First of all, it is worth noting that he has a conductivity of 50 microns. For tubular modifications, this is quite a lot. Experts also argue that the device is allowed to operate in AC networks. For the transformers of the RK series, they are great. The threshold conductivity of the arresters of the presented series is maintained at around 55 microns.
The rated voltage does not exceed 400 V. In this case, devices are not suitable for KE series transformers. Capacitor unit used high capacity. The AK 50 class protection system is used. The breakdown voltage of the modification is located at the level of 430 V. The modification is not provided for the wave interference protection system. The operating humidity of the arrester is 50%. A user can purchase a model for 18 thousand rubles.
Characteristics of arrester arresters 10
The arrester arresters are used on transformers of the RK series. Insulators for it fit only a small width. According to experts, the conductivity of the spark gap of this series is quite high. The rated voltage is at 450 V. At this time, switching patency is at 40 microns. The protection system for the modification is used in class PE. In an alternating current network, the capacitor block overheats very rarely.
To work with the MO transformer, modifications are rarely used. The capacitance of the capacitor unit is exactly 50 pF. Special attention in the device deserves a linear conductor, which fights impulse noise. Negative modulation is not terrible for him. Separately, it should be noted that the operating humidity of the arrester is 80%. A user can buy it for 20 thousand rubles.