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MEDIUM VOLTAGE POWER SUPPLIES - MCP Clocked circuit

Series MCP from 125V to 2kV / 14W to 15kW

In principle, the rectified line voltage drives a square wave generator of fixed frequency, whose AC voltage is transformed, rectified and filtered, producing the output voltage. For regulation, the square wave voltage is pulse width modulated. A low residual ripple of the output voltage, together with a high stability, high regulation speed and a low stored energy are all achieved by virtue of the high switching frequency.

FEATURES:

- Compact size and light weight

- Efficiency approx. 90%

- Short-circuit & flashover proof

- Unlimited operation with rated current in a short-circuit condition

- Unlimited operation with rated power

- Voltage and current regulation with automatic sharp transition, control modes indicated by LEDs

- Adjustable overvoltage protection (limitation of set value)

- 4½ digit DVM's for voltage and current for all models

- Voltage and current setting by means of 10-turn potentiometers with precision scale; the adjusting knob can be locked

- Indication of set point values by means of button for switchover of the displays

- Set point adjustment possible with locked output, release of output voltage by means of an "ON" / "OFF" switch

- Suitable for inductive and capacitive loads

- Suitable for photomultipliers

POWER

Power range up to 15.000W

VOLTAGE

Output voltage 125V up to 2000V, continuously adjustable from zero to maximum

APPLICATIONS

Ion sources

Plasma / Gas discharge applications

Sputtering

Photomultiplier

Nuclear research

Chemical / Biological research

Aerospace industry

Test benches for inverter rectifier and capacitors

SPECIAL FEATURES

Switch mode regulation

Low ripple

High stability

High regulation speed

Low stored energy

Floating output

DESIGN:

- ½19" or 19" table-top case (depending on output voltage and power).

- 19" Rack-adapters for mounting into a 19" rack are available as accessory.

OUTPUT:

- Output isolation: The output is floating. Either the positive or the negative terminal may be connected to earth. Units with nominal voltage up to 350V are isolated for ±500V. Units with nominal voltage from 650V up to 2000V are isolated for ±2000V. (Not valid with the option analog programming. If the floating function should remain, the floating analog programming must be chosen).

- Output terminals: All output terminals are located at the rear side of the unit. Units up to 350V nominal voltage are equipped with 4mm safety connectors. For nominal voltage of 650V and higher, high voltage connectors with the appropriate dielectric strength are delivered with the power supply. 

TECHNICAL DATA:

- Mains connection:

>> Up to 1400W nominal power: 230V ±10% 47Hz to 63Hz

>> For 2800W and higher: 400V ±10% 47Hz to 63Hz, three-phase

- Ambient temperature:  0°C to +40°C

The following data applies for voltage and current regulation, and refers to the rated value (unless otherwise stated):

- Setting range: from approx. 0,1% to 100%

- Setting resolution: ±1 x 10-4

- Residual ripple (0-10MHz):

>> Up to 350W nominal power: <5 x 10-5 pp + 50mVpp

>> For 700W and higher: <2 x 10-4 pp + 200mVpp

- Recovery time:

>> Voltage control: <1ms for load changes from 10% to 100% or from 100% to 10%

>> Current control: <10ms for load changes causing an output change of less than 10% of the rated voltage

- Setting time at nominal load: <300ms for changes of the output voltage from 10% to 90% or 90% to 10%

- Discharge time constant for output without load: approx. 2sec. to 10sec., depending on type

- Deviation:

>> For ±10% mains voltage variation: <± 1 x 10-5

>> For no load / full load: <1 x 10-4

>> Over 8 hours under constant conditions: <±1 x 10-4

>> Within the temperature range: <±1 x 10-4 /K

POSSIBLE OPTIONS:

- Coarse/fine-potentiometers (99% / 1%) for more accurate adjustment of voltage and / or current

- Analog programming (One of the outputs on “0V” - potential)

- Analog programming, floating

- DVM with better resolution

- Computer interfaces - IEEE 488, RS 232, RS 422, Profibus DP, USB, LAN (more on request)

- Lower ripple

- Higher stability

- Lower stored energy

- Power limitation

TYPE OVERVIEW

3) connection three-phase

For 650V and higher units, the mating high voltage connectors are included in the scope of delivery.