The effect of damping resistance is the resistance in the circuit named. Some circuit for preventing oscillation amplitude of the circuit component in series in the circuit or a shunt resistor portion of the energy consumed can cause shocks, this resistance is called the damping resistor.
1. Role damping resistor
In order to effectively absorb the higher harmonic components rectifier transformer secondary circuit, to prevent the output circuit resonates effective protection rectifier transformer, the transformer must be provided at the output of the rectifier damping resistor. In any case, definitely not the rectified output of the transformer is connected directly without a damping resistor to the electric field.
ESP rectifier transformer parameters match the size of the damping resistor, the current state is no uniform standard. Damping resistance must be greater than the rated power and the resistance of the secondary product of the square of the rated current, and to leave a safety margin.
2. The damping resistor installation site
Currently, in the field installation of the damping resistor, and some mounted between the rectifying output of the transformer and high-voltage isolation switch, and some high voltage isolation switch installed in high-voltage electric field and between the introduction, in theory, these two kinds of connection can be. However, considering the maintenance, replacement of convenience and safety damping resistor, damping resistor connected between the output of the high voltage rectifier transformer isolation switch as well, when the damping resistor output of the transformer station is a need to repair or replace the rectifier, as long as the electric power after isolation switch to the “ground” position, we can ensure a reliable shield damping resistor, to ensure the safety of the remaining adjacent electric field may continue to run. Because the electric field electrostatic precipitator is often operated in series several, if the damping resistor connected to the disconnector and a high pressure is introduced between the electric field, the electric field even after power isolation switch to “ground” position, the charging operation of the ion generating an electric field adjacent still on the damping resistor string.
It is well known to cause the damping resistor is disconnected “Output open” Tripping electric field, this situation is very clear, well determined. However, when the damping resistor fall somewhere in the middle or the end, near the end of the resistance wire “ground”, where the corona discharge is generated from the ground, to reflect the results of the electric field meter is very similar to the normal operation. Listen carefully to the sound check discharge device, if there is a discharge phenomenon at damping resistance, to timely treatment.