CKSG Three-Phase Dry-Type Iron-Core Series Reactor

Overview

Dry-type Iron-core Series Reactors are used in low-voltage reactive-compensation cabinets and connected in series with capacitors. When there are lots of harmonic sources such as rectifiers and converters in low-voltage power grid, the high-order harmonics generated by them will seriously harm the safe operation of main transformer and other electrical equipment. After connecting in series with capacitor, the reactor can effectively absorb the power system harmonics, optimize the voltage waveform and improve the power factor of the system, and can effectively suppress the closing inrush current and switching overvoltage, effectively protecting the capacitor.

Structural Features

1. The reactor can be classified 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 to ensure that the air gap of the reactor will not change during operation.
3. The coil is made of F-grade enameled rectangular copper wires that are closely and evenly arranged, without insulating layer covered, enjoying elegant appearance and good heat dissipation.
4. The coil and iron core of the reactor are assembled into one and then go through the processes of pre-drying → vacuum impregnation → drying and curing.
5. Fasteners of core column of the reactor are made of non-magnetic materials to ensure good filtering effect.
6. All exposed parts are anti-corrosion treated, and adopt cold-pressed copper tube terminals as the lead-out terminals.
7. The reactor has the advantages of small size, light weight and elegant appearance compared with domestic similar products.

Performance Parameters

1. It is applicable for systems of 400V, 660V.
2. Type of reactance ratio: 1%, 6%, 7%, 12%, 13%, 14%.
3. Rated insulation level is 3KV/n.
4. Maximum temperature-rise of each part of the reactor: iron core does not exceed 85K; electric coil does not exceed 95K.
5. Reactor noise does not exceed 45db.
6. The reactor can run for a long time under the condition that the power frequency plus harmonic current is not more than 1.35 times the rated current.
7. Linearity of reactance value: the ratio of reactance value at 1.8 times rated current to reactance value at rated current is not less than 0.95.
8. The difference between any two-phase reactance values of a three-phase reactor does not exceed ±3%.
9. High temperature resistance grade: HF grade (180°C) or above.

Model and description