CAYLAR, instrumentation scientifique
 
 
Fabricant d'électro-aimants,
de teslamètres RMN,
d'alimentations de puissance
 
 
 
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CAYLAR, instrumentation scientifique
 
Fabricant d'électro-aimants, de teslamètres RMN, d'alimentations de puissance

 
 
 
 
 
 
 
 
 

Magnet Power Supplies

 

A tailor-made power supply

High precision analog control loop power supplies for inductive loads such as electromagnets, superconducting coils, Helmholtz coils and others.
Autonomous analog power supplies with digital controls, readouts and supervision. The interfaces are digital and analog.

  • Monopolar or bipolar 4 Quadrants regulated in current or magnetic field.
  • Analog control for very low noise and high stability.
  • Stability class 100 ppm, 10 ppm or 1 ppm.
  • Output current : 0 A to 500 A.
  • Output power: 1 W to 100 kW.
  • Output voltage : 0 V to 1000 V.
  • External analog control or by dual internal 20-bit DAC (100% and 1%).
  • Very low noise 24-bit digital reading.
  • Reading resolution: 10µA.
  • Digital current setpoint: 1mA.
  • Absolute accuracy: 2ppm.
  • SCPI controls via digital interface RS232, Ethernet, MODBUS available.
  • Analog interfaces (Read ±10V, Output ±10V, Status, Interlocks and Analog powering).
 

Accuracy and Reliability

CAYLAR power supplies are mainly designed to provide a very high stability current to magnetic systems such as electromagnets, superconducting magnets, Helmoltz coils, calibrated according to the load and the desired characteristics.

Our power supplies have been dedicated to the scientific world for over 40 years and offer superior performance for fundamental research activities.
The stability class are given for a period of 8 hours.

CAYLAR current sources are compatible with an analog or digital NMR control loop for absolute field regulation.


 
 
 

MPU 6U

Rack 6U 19" jusq'à 6kW en monopolaire 2 quadrants ou 3kW en bipolaire 4 quadrants.

MPU 6U
 
 
 

MPU 16U

Baie 16U 19" jusqu'à 24kW en monopolaire 2 quadrants ou 12kW en bipolaire 4 quadrants.

MPU 16U
 
 
 

MPU 24U

Baie 24U 19" jusqu'à 48kW en monopolaire 2 quadrants ou 24kW en bipolaire 4 quadrants.

MPU 24U
 
 
 

MPU - 5U - 3kW

  • Mass : Up to 50Kg
  • Max Power Monopolar 2 quadrants : 3kW
  • Max Power Bipolar 4 quadrants : ±1.5kW
  • Max voltage : 50 V
  • Max current : 120
 
 

MPU - 20U - 24kW

  • Weight : Up to 180Kg
  • Max Power Monopolar 2 quadrants : 24kW
  • Max Power Bipolar 4 quadrants : ±12kW
  • Max voltage : 200 V
  • Max current : 500 A
 
 

MPU - 36U - 50kW

  • Mass : Up to 400Kg
  • Max Power Monopolar 2 quadrants : 50kW
  • Max Power Bipolar 4 quadrants : ±25kW
  • Max voltage : 200 V
  • Max current : 500 A
 
 

General specifications

TypeMonopolare, True Bipolar 4-quadrants
Current
Up to 500 A
Voltage
Up to 1 000 V
CURRENT Regulation
VOLTAGE Regulation
FIELD Regulation (HALL and NMR sensor)

 

Technologies

Current sensor
SHUNT or 0-FLUX DCCT
Magnetic field sensor
HALL or RMN (option)
Technology
with or without any switched mode power supplies
Control loop
Analogic and digital
Speed ramp control (mA/s)
Thermostatically controlled electronics
(1ppm Option)
Setpoint resolution (I, U, B)
2 x DAC 20-bit - Down to µV (10-6 setting)
Resolution measurements (I, U, B)
True ADC 24-bit

 

Performances

Topology2 or 4 quadrants
Stability class100ppm, 10ppm, 1 ppm
Long term stability (8 h)<± 0.5 ppm
Ripple and noiseJusqu’à 1 mV eff + 10-6 Vn
Temperature coefficientJusqu’à <0.1 ppm/° C
 

Ramp control

Ramp speed control
0.1 mA/s
Sinusoidal, triangular profile

 

Supraconductor

Power supply for SHUNT SUPRA  
Quench protection    
Current control
Current control with coil voltage limitation

 

Interfaces and control

Drivers
MODBUS
Ethernet
RS232
External setpoint and analog I, U & B copies

 

Stability

Class : 100 ppm, 10ppm, 1ppm, 0.1ppm with NMR Field Regulator

Class1 ppm10 ppm100 ppm
Ripple and noise1 mV eff + 10-6 Vn2 mV eff + 10-5 Vn3 mV eff + 10-4 Vn
High frequency noise
Temperature coefficient
<1 ppm / °C<2 ppm / °C<10 ppm / °C
Absolut accuracy
<±0.5 ppm
<±5 ppm
<±50 ppm
Long term stability (8 h)
<±0.5 ppm
<±5 ppm

<±50 ppm
NMR Regulation (option)
±1 mG / ±0.1 µT (no drift)
±1 mG / ±0.1 µT (no drift)
 

Monitoring

  • Reading of the internal temperature.
  • Reading of the temperature of the servo electronics.
  • Reading of the water temperature.
  • Reading of the water flow rate.
  • Reading of the analog safety devices.
 

Analog Protections

  • Ramp speed limit.
  • Overheat detection of all heating elements.
  • Over power.
  • Overvoltage.
  • Overcurrent.
  • Analog voltages.
  • Water flow rate.
  • Leakage detection.
  • Condensation detection.
  • Transistor fault.
  • Quench protection for superconductors.
  • 3 external interlock.

 
 

Ask for information

* Mandatory fields.
 
 
 
 
 
 
 
 
 
 

Regulation*

 
 
 
 
 

MPU - 6U - 6kW

  • Weight : Up to 30 Kg
  • Max Power Monopolar 2 quadrants : 6kW
  • Max Power Bipolar 4 quadrants : ±3kW
  • Max voltage : 130 V
  • Max current : 80 A
  • Air cooling
  • Switching mode technology