Magnet Power Supply
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.
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 50 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.
Red: Internal reading from CAYLAR porwer supply / Blue: External independent reading / Green: Internal Temperature
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 - 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
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
| Type | Monopolare, 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
| Topology | 2 or 4 quadrants |
| Stability class | 50ppm, 10ppm, 1 ppm |
| Long term stability (8 h) | <± 0.5 ppm |
| Ripple and noise | Jusqu’à 1 mV eff + 10-6 Vn |
| Temperature coefficient | Jusqu’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 : 50 ppm, 10ppm, 1ppm, 0.1ppm with NMR Field Regulator
| Class | 1 ppm | 10 ppm | 50 ppm |
| Ripple and noise | 1 mV eff + 10-6 Vn | 2 mV eff + 10-5 Vn | 3 mV eff + 10-4 Vn |
| High frequency noise | — | — | — |
| Temperature coefficient | <1 ppm / °C | <2 ppm / °C | <5 ppm / °C |
| Absolut accuracy | <±0.5 ppm | <±5 ppm | <±25 ppm |
| Long term stability (8 h) | <±0.5 ppm | <±5 ppm | <±25 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
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