Power supply units for electrostatic gas cleaning, АТФИ type

Power supply units for electrostatic gas cleaning, АТФИ type

Designed to supply by a high-voltage rectified current the electrostatic industrial gas purification filters.
АТФИ consist of current-limiting reactor, high-voltage single-phase oil-immersed transformer, high voltage bridge rectifier, high-voltage measuring divider and protective reactor. All these elements are arranged in one housing.
The АП is designed for connection to the two phases of three-phase alternating current (380V, 50Hz).

The Power Units can be produced for any of rectified voltage in the range of 20kV to 120kV and for currents of 0,1 to 2,5A.
АТФИ, by customers request, comes with a high-voltage connector.
In agreement with the customer can be manufactured power units with parameters different from those given above.


The control cabinet of supply units for АТФИ type electrostatic filters has a built-in automatic power management unit БАУЭ: П (hereinafter referred to as ШУ) and designed for remote or local control and monitoring of one АТФИ output parameters in automatic and manual and adjustment operation modes.
БАУЭ: П operation unit transmits and receives control and monitoring parameters of АТФИ type supply units for electrostatic filters through keyboard and LED indicator, located on the front panel of the control unit or a wired RS232 interface on the portable computer.
The operation cabinet has the following protection types:
   - of internal and external short circuits (automatic switches);
   - of overload or short circuit in АТФИ supply unit;
   - of thyristors half-wave operation mode;
   - of short circuit in space between electrodes or high-voltage bushing.
ШУ has three operation modes:
   - «Manual operation mode» - operation and digital display on the БАУЭ: П front panel.
- smooth change of the thyristors opening angle from 5° to 175°;
- АТФИ output voltage change rate 0,5kV/sec;
digital display of АТФИ type electrostatic filters power supply current values of units output voltage and thyristors opening angle.
   - «Automatic operation mode» - control of thyristors opening angle using a given program preset;
- digital display of the current values of the output voltage, АТФИ unit current and the thyristors opening angle on the front panel of the automatic control unit;
- "Crash" signal (the dry contact of relay is closable).
   -  «Commissioning mode» - control and changes of variable parameters and protection settings for manual and automatic operation via the RS232 port of the portable computer.