Type of Control
Thyristor (SCR) Control
- The Rectifier output can be controlled using SCR at primary or secondary of the Transformer.
- It can be provided with 6, 12 & 24 Pulse configuration.
Variac Control (Stepless)
- The working of the Rectifier can be controlled using stepless Motorized Variac.
- Output controlled from zero to rated value.
IGBT based Control
- The Rectifier output is controlled with Pulse Width Modulation (PWM).
- Configuration is based on IGBT Module High Frequency Switching Mode
Type of Cooling:
- Natural / Forced Air Cooled.
- Oil Cooled.
- Water Cooled.
Rectifier Transformer:
- Transformer is used to step down the input supply.
- Available in both Oil Cooled and Air Cooled (Natural / Forced).
- Dry type is available in both VPI & CRT.
- Special High Frequency Transformer for IGBT based Rectifier.
Controller:
- Microprocessor / DSP based electronic controller circuit will be provided for output control.
- It provides soft start feature which provides the gradual increase of Output (From Zero to Set Value).
- It also provides limiting features.
Product Features
Application
Technical Details
Product Features
- Input Switchgear (as per customer’s requirement).
- Filter circuit for ripple content (as per customer’s requirement)
- Filter choke of core type, copper wound, class “F” insulation type, forced cooled.
- 6 Pulse / 12 Pulse design as per customer’s requirement.
- Alarms with annunciation window.
- With Programmable Logic Controller – PLC (as optional).
Application
RIR’s Power Rectifier are used in number of applications in various industries like Cement, Steel, Automobile, Thermal & Power, Railways, Paper, Oil, R&D catering to various process:
- Electroplating
- Electro Chlorination
- Hydrogenation
- Electro cleaning
- Engine Testing
- Motor Testing
- Cranking
- Electrodip
- Electro slug
- Electro winning
- Electrolysis
- DC Substation
- Traction Motor Testing
- Aircraft Testing
- Battery Formation
- Electro Coagulation.
Technical Details
| Input Voltage | : | As specified by customer with +/- tolerance (3 ph – 3 wire / 4 wire, 50Hz / 60Hz +/-5%). |
| DC Voltage | : | Upto 1000V DC or as per customer’s / system requirement. |
| DC Output Current | : | Upto 25000A DC or as per customer’s / system requirement. |
| DC Regulation | : | +/-1% |
| Output Ripple | : | 5 to 10% as per the process. Can provide Less than 1% as per system requirement. |
| Efficiency | : | 85 to 90% at maximum output parameters & at Nominal AC I/P Vtg. |
| Standard Protection | : | Input Switchgear, Soft Start Feature, Fuse Failure, Over Temperature, DC Over Voltage, DC Over Current, AC Failure (Single Phase / Phase Unbalance / Under Voltage / Over Voltage), RC Snubber. |
| Standard Alarms | : | Mains Fail, DC Over voltage, DC Under voltage, Rectifier Fuse blown. |
| Standard Metering | : | Output DC Voltage & Out DC Current, Input AC Voltage & Current. |
| Cooling | : | Natural / Forced Air cooled, Oil Cooled, Water Cooled. (as per customer’s requirement) |
| Enclosure Protection | : | IP20 / IP31 / IP42 (as per customer’s / site requirement) |
| Operating Temp | : | 0 – 50 deg C. |
| Interface | : | With external PLC and SCADA signals (optional) |