Filter reactor function

The filter reactor is used in a low-voltage filter cabinet, connected in series with a filter capacitor, tuned to a certain resonance frequency, and used to absorb the harmonic current of the corresponding frequency in the power grid. There are a large number of harmonic sources such as rectifiers, converters, and frequency converters in the low-voltage power grid, and the high-order harmonics generated by them will seriously endanger the safe operation of the main transformer and other electrical equipment in the system. After the Weihao filter reactor is connected in series with the capacitor, it can not only effectively absorb the harmonics of the power grid, but also improve the power factor of the system, which plays a great role in the safe operation of the system.

Filter Reactor Structural Features

1. The filter reactor is divided into two types: three-phase and single-phase, both of which are iron core dry type.

2. The iron core is made of imported cold-rolled oriented silicon steel sheet with high quality and low loss. The core column is divided into uniform small sections by multiple air gaps. The air gaps are separated by epoxy laminated glass cloth plates and bonded with high temperature adhesive to ensure the reactance. The air gap does not change during operation.

3. The coil is wound with H-grade enameled flat copper wire, which is tightly and uniformly arranged.

4. After the coil and iron core of Weihao reactor are assembled into one body, they go through the process of pre-baking→vacuum dipping→heat-baking and curing, and use H-level dipping varnish to firmly combine the coil and iron core of the reactor. .

5. The clips and fasteners of Weihao reactors are made of non-magnetic materials to ensure that the reactor has a high quality factor and a better filtering effect.

6. The exposed parts are treated with anti-corrosion treatment, and the lead-out terminals are made of tinned copper tube terminals.

Environmental conditions for use of filter reactors

1. The altitude does not exceed 2000 meters.

2. The operating ambient temperature is -25℃～+45℃, and the relative humidity does not exceed 90%.

3. There is no harmful gas around, no flammable and explosive materials.

4. The surrounding environment should have good ventilation conditions. If it is installed in the cabinet, ventilation equipment should be installed.

Filter Reactor Performance Parameters

1. Can be used in 400V, 660V systems.

2. The rated insulation level is 3kV/min.

3. The temperature rise limit of each part of the reactor: the iron core does not exceed 85K, and the coil temperature rise does not exceed 95K.

4. The noise of the reactor is not more than 50dB.

5. The difference between any two-phase reactance values of the three-phase reactor is not more than ±2%.

6. Temperature resistance class H (180℃) or above.

Filter reactor use environmental conditions

1. The altitude does not exceed 2000 meters.

2. The operating ambient temperature is -25℃～+45℃, and the relative humidity does not exceed 90%.

3. There is no harmful gas around, no flammable and explosive materials.

4. The surrounding environment should have good ventilation conditions. If it is installed in the cabinet, ventilation equipment should be installed.

Filter Reactor Performance Parameters

1. Can be used in 400V, 660V systems.

2. The rated insulation level is 3kV/min.

3. The temperature rise limit of each part of the reactor: the iron core does not exceed 85K, and the coil temperature rise does not exceed 95K.

4. The noise of the reactor is not more than 50dB.

5. The difference between any two-phase reactance values of the three-phase reactor is not more than ±2%.

6. Temperature resistance class H (180℃) or above.