Profitable investment

• Units are extremely compact and powerfull
• Very easy to install
• No commisioning needed

Process optimized

• High accuracy and very low ripple
• Easy of interface with computers
• Wide range of options to suit your process

Low cost of operation

• Minimum of maintenance
• Air cooling; no costs for oil, water, etc.
• Designed for automatic operation
• Easy to service and repair

Secure and safe

• Designed according to International standards
• Extensive warranties
• Service and spare parts available worldwide
• Contains no dangerous oils etc.

FUNCTION

The mains voltage is connected to the diode bridge (3) via a RFI-filter (1) and the main contactor (2). The mains voltage is rectified and smoothed by a filter (4) and is then connected to the transistor switch (5). The transistor switch converts the DC-voltage into high frequency pulses which are applied to the main transformer (6).
The transformer provides isolation from the mains and transforms the voltage to the rated output level.
The secondary voltage/current is rectified through the diode bridge (7) and smoothed through the the LC-filter (8). The control unit (10), which is supplied by the control transformer (9), monitors actual DC-current by means of the shunt (11), actual DC-voltage, and controls the transistor switch (5) until set and actual values correspond.

TECHNICAL DATA & STANDARD SIZES

Supply voltage : 3x380V, 50-60 Hz, other voltages on request.
Control accuracy : Voltage/current <1%.
Ambient temperature : Max 40 C. (at 50 C max 80% of nominal output current).
Radio interference : Suppressed according to VDE 0871 A, wirebound interference.
Power factor : About 0.95 at rated load.
Cooling : Air cooled by forced convection.
DC ripple : < 1% between 10-100% of output current at CC mode, (typically < 0.5%).

BLOCK SCHEMATIC DIAGRAM

Humidity : Max 85% relative.
Protections : Over-current, over-temperature, transient voltage and short circuit protected.
Duty ratio : Designed for continuous operation at rated load up to 1000 m altitude.
Efficiency : 0.85 - 0.92 depending on size.
Regulation range : Stepless - constant voltage/current 0 - 100%.

OPTIONS :

• Serial communication
• Programable controller
• A/D and D/A converters
• Signal converters
• Ah-counters
• Process timers
• Digital instrumentation
• 10-turns potentiometers
• Pole reversing units
• Control unit for pulse plating
• Custom designed rectifiers
• Units in 19" rack system