Design and development of electrical products for power systems
bipolar power supplies, monopolar power supplies, laboratory electromagnet, calibration furnaces




MONO AND BIPOLAR POWER SUPPLIES
10PPM TO 100PPM
     
Pu 4kW - 40V/100A - 10ppm
+/-42V +/-168A 100ppm
Pu 2kW - +/-35V - +/-50A - 100 ppm

Operating mode

The power supply delivers a stabilized current from 0.1 % to 100 % of In (In = nominal current) for the monopolar power supplies and from ± 0.1 % to ± 100 % for the bipolar power supplies.

In local control mode, the current is settled by two potentiometers (100 % and 1 %) ; as regards the bipolar supplies, the polarity is defined by a switch on the front panel.

In remote control mode, the current varies according to the external control signal. Its value ranges from 0 to + 10 V for monopolar power supplies and from -10 V and + 10 V for bipolar power supplies to enable a true zero crossing.

The basic mode is a current regulation with a voltage limitation adjusted at 110 % of the nominal output voltage (rectangular characteristic).

The I and U monitors are available..

OPTIONAL :

  • Remote control panel available
  • IEEE or RS232 interface
  • Voltage limitation adjusted by a 10-turn potentiometer on the front panel
  • Continuous adjustment of the output current between + In and -In by the front panel potentiometers for the bipolar power supplies
  • On request, other voltage values for remote control mode.

Description

The main devices of the power supplies are the following :
  • The switching-on and protection components
  • A power transformer for galvanic isolation and voltage adaptation
  • One or two rectifiers and filtering devices
  • One or two serial regulation circuits (transistors)
  • A control / regulation / security circuit, which allows an easy remote control mode : the current can be settled and modulated (around its nominal value for example )

 

Electric features

- Nominal line voltage :
(other voltages on demand)

400 V three phase

- Acceptable line variation :

+6% ; -10%

- Fréquency range :

50 / 60 Hz

- Cooling mode

Taped water or forced air

 

Tap water (if exists) :

 
 
   

- flow rate :

0,8 liter / mn / kW (except special mention)

   

- temperature range :

11°C to 25°C

- Ambient operating temperature range

11°C to 35°C

 

ADJUSTMENT AND STABILITY (typical values)

 
Class 100 ppm or 10-4
Classe 10 ppm ou 10-5
- Accurate adjustment in 1 % range
By 1-turn potentiometer
By 10-turn potentiometer
- Reading on indicator(s) 3.5 digits
Current
Current and voltage
- Line (+6% to -10% of nominal line voltage) :
± (2.10-5 Is + 2.10-5 In)
± (2.10-6 Is + 2.10-6 In)
- Load variation (± 20 %) :
± (2.10-5 Is + 2 10-5 In)
± (2.10-6 Is + 2 10-6 In)
- By degree
± (10-4 Is +10-4 In)
± (10-5 Is +10-5 In)
- Long term drift (8 hours) after ½ hour of thermal stabilization ; under conditions of constant line voltage, load and temperature
± (10-4 Is +10-4 In)
± (10-5 Is +10-5 In)
- Peak to peak noise (1 Hz bandwidth) :
± (10-5 Is +10-5 In)
± 2 (10-6 Is +10-6 In)
- Residual ripple
(3 mV eff +10-4 Vn)
(2 mV eff +10-6 Vn)

Is : output operating current ; In : output nominal current ; Vn : output nominal voltage.

Note : typical values are half of guaranteed values




Bipolar power supplies, monopolar power supplies, laboratory electromagnet, calibration furnaces.

Copyright © BOUHNIK SAS 2003