High Current SCR Rectifiers

Turnkey solutions for up to 5MW for high power applications

High Current SCR Rectifiers

Turnkey solutions for up to 5MW for high power applications

KraftPowercon has been providing silicon controlled rectifiers (SCR) for a variety of applications for decades. However, it’s not the length of time, but our extensive power supply knowledge and service that has allowed us to gain the trust and long established partnerships with some of the world’s leading companies within water treatment, hydrogen generation, chlorine generation and other high power applications.

Over the years, KraftPowercon has delivered practically every known Transformer Rectifier configuration used in medium and high power application such as:

6 / 12 / 24 pulse rectifiers for reduced harmonics and ripple
Air / Oil or Water Cooling options
SCR (Thyristor) or IGBT (Chopper) configurations
Variety of transformer configurations
Solution for outputs up to 100,000 Amps

We can recommend the best possible configuration based on an analysis of customer requirement specification.

We can also offer a turnkey solution with supply and installation of Rectifiers, DC Busbar, Input HV / LV cables and Power Quality Solutions for Harmonic / Power Factor Improvement.

With 80 years of experience, we won’t let you down!

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Advantages
Technical Data

Designed for high reliability continuous duty operation with high up-time.

Rectifier configuration, controls and features are supplied as per application requirements.

Ready interface with Plant PLC / DCS, suitable for automatic operation.

Wide range of allowable input voltage variation and ambient conditions.

All routine tests and type Tests done prior to dispatch.

CE marked Transformer Rectifiers can be supplied for installation in the EU.

Optional Turnkey Contracts taken up including installation and supply of DC Busbars, Power Cables (HV / LV), Power Factor and Harmonic Correction Systems, DM Water Cooling Systems.

Professional Engineering Group handles documentation and approval requirements of electrochemical projects.

Voltage Range

Up to 500 VDC

Current Range

Up to 50,000 ADC

Transformer

Oil Cooled or Dry Type as per IEC 76

Variety of Transformer Connections

Delta / Star, Zigzag, Extended Delta, etc. with Optional ON LOAD or OFF LOAD Taps

Rectifiers

Water or Air Cooled as per IEC 146, with multi-pulse configurations (6, 12, 24 pulse) for reduced Harmonics

Options

Polarity Reversing, Pulse Operation, Current Profile Programmers

Supply

220 V - 33 kV AC, 50 / 60 Hz

Specifications are subject to change without notice.

Remote control box ’basic version’ with analogue or digital display, potentiometers etc.
RS-232C interface for control of one power supply.
Analogue/Digital interface. Two controls, and two status signals 0–10 VDC and two controls and two status signals 24 VDC.
Standard configuration: Iset, Uset, lact and Uact: 0–10 VDC. On/Off, Block/Run, Power On and Alarm as digital signals: 24 VDC.
Analogue interface with four inputs and four outputs galvanically isolated. Control and status signals 0-10 VDC or 0/4–20 mA.
Standard configuration: Iset, Uset, lact and Uact: 4–20 mA
Digital interface with four inputs and four outputs. Control signals 24 VDC. Status signals via voltage free relay contacts; contact data 24 VDC or 24 VAC. Standard configuration: On/Off, Block/Run, Power On and Alarm.
Raise / Lower function.
Electrically controlled AC breaker.
External reference shunt, 60 mV.
Polarity Reversal.