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Inverter input/output reactor manufacturer, three-phase AC input/output reactor manufacturer, outgoing line incoming line reactor manufacturer, DC speed regulating reactor manufacturer, series reactor manufacturer
1、 Purpose:
This series of dry core Incoming reactor It is used in series with the incoming end of the frequency converter as the incoming line reactor of the frequency converter. The frequency converter will produce large harmonics during operation, mainly 5, 7, 11 and 13 times, and the harmonic content is very high. If the incoming reactor is not installed, the service life of the frequency converter and other equipment will be greatly shortened. When the harmonic interference is serious, some equipment can not operate normally. After the incoming reactor is installed, the harmonic content will be greatly reduced, and the power factor of the power grid will be improved, Ensure the safe operation of frequency converter and other loads, and ensure that other equipment is not affected by harmonic interference; Adding outgoing reactor can passivate the steepness of inverter output voltage (switching frequency) and reduce the disturbance and impact of power components in inverter. Moreover, the incoming reactor can effectively restrain the circuit inrush current at the moment of load closing, and protect the inverter device and other components in the circuit from over-current impact.
2、 Structural characteristics of incoming line reactor
1. The incoming line reactor is three-phase, all of which are iron core dry type.
2. The iron core is made of imported cold-rolled silicon steel sheet with high quality and low loss, and the air gap is separated by epoxy laminated glass cloth plate to ensure that the air gap of the reactor will not change during operation.
3. The coil is wound with H-class enamelled flat copper wire, closely and evenly arranged, without insulating layer on the surface, and has good heat dissipation performance.
4. After the coil and iron core of the incoming reactor are assembled into a whole, it goes through the process of pre drying → vacuum impregnating → hot drying and curing. Level H impregnating varnish is used to firmly combine the coil and iron core of the reactor, which not only greatly reduces the noise during operation, but also has a very high heat resistance level, which can ensure that reactor It can also operate safely and noiselessly under high temperature.
5. The fasteners of the core column of the incoming reactor are made of non-magnetic materials to reduce eddy current heating during operation.
6. The exposed parts are treated with anti-corrosion treatment, and the lead out terminals are tinned copper tube terminals.
7. Compared with domestic similar products, this incoming reactor has the advantages of small size, light weight, beautiful appearance, etc., and can be compared with foreign well-known brands.
3、 Operating environment conditions of incoming line reactor
1. The altitude shall not exceed 2000m.
2. The operating ambient temperature is - 25 ℃~+45 ℃, and the relative humidity is not more than 90%.
3. There is no harmful gas or inflammable and explosive materials around.
4. The surrounding environment should have good ventilation conditions. If it is installed in the cabinet, ventilation equipment should be installed.
5. The temperature resistance level is above Class H (180 ℃).
4、 Performance parameters of incoming line reactor
1. It can be used in 400V and 660V systems.
2. Rated insulation level: 3kV/min.
3. The temperature rise limit of each part of the incoming reactor: the iron core shall not exceed 85K, and the temperature rise of the electric coil shall not exceed 95K.
4. The noise of incoming line reactor shall not be more than 45dB.
5. Three phase Incoming reactor The difference between reactance values of any two phases shall not be greater than ± 3%.