## NCA / MCA Autoranging Power Supplies

The NCA/MCA series is an auto ranging power supply design in which the power supplies operate over the full range of their output voltage & current, up to the units maximum rated output power. This results in an operating range which is up to 3-times wider than that of a more conventional power supply. When fitted with the optional computer interface, the MCA/NCA series become versatile programmable power supplies. In principle, the rectified line voltage drives a square wave generator, whose AC voltage is transformed, rectified and filtered, producing the output voltage. For regulation, the square wave voltage is pulse width modulated.

Series | V_{max} | A_{max} | P_{max} | Width | Height | Depth | Weight |
---|---|---|---|---|---|---|---|

NCA 750-55 | 55 V | 40 A | 750 W | 443 mm | 133 mm | 350 mm | 12 kg |

NCA 1500-55 | 55 V | 80 A | 1.5 kW | 443 mm | 133 mm | 550 mm | 20 kg |

NCA 3000-55 | 55 V | 160 A | 3 kW | 443 mm | 133 mm | 650 mm | 25 kg |

MCA 750-150 | 150 V | 15 A | 750 W | 443 mm | 133 mm | 350 mm | 10 kg |

MCA 1500-150 | 150 V | 30 A | 1.5 kW | 443 mm | 177 mm | 450 mm | 17 kg |

MCA 3000-150 | 150 V | 60 A | 3 kW | 443 mm | 177 mm | 650 mm | 37 kg |

MCA 6000-150 | 150 V | 120 A | 6 kW | 443 mm | 355 mm | 650 mm | 61 kg |

MCA 9000-150 | 150 V | 180 A | 9 kW | 443 mm | 535 mm | 650 mm | 90 kg |

MCA 750-400 | 400 V | 6 A | 750 W | 443 mm | 133 mm | 350 mm | 10 kg |

MCA 1500-400 | 400 V | 12 A | 1.5 kW | 443 mm | 177 mm | 450 mm | 17 kg |

MCA 3000-400 | 400 V | 24 A | 3 kW | 443 mm | 177 mm | 650 mm | 35 kg |

MCA 6000-400 | 400 V | 48 A | 6 kW | 443 mm | 355 mm | 650 mm | 61 kg |

MCA 9000-400 | 400 V | 72 A | 9 kW | 443 mm | 535 mm | 650 mm | 90 kg |

MCA 750-750 | 750 V | 3 A | 750 W | 443 mm | 133 mm | 350 mm | 10 kg |

MCA 1500-750 | 750 V | 6 A | 1.5 kW | 443 mm | 177 mm | 450 mm | 16 kg |

MCA 3000-750 | 750 V | 12 A | 3 kW | 443 mm | 177 mm | 650 mm | 33 kg |

MCA 6000-750 | 750 V | 24 A | 6 kW | 443 mm | 355 mm | 650 mm | 61 kg |

MCA 9000-750 | 750 V | 36 A | 9 kW | 443 mm | 535 mm | 650 mm | 90 kg |

MCA 750-1500 | 1.5 kV | 1.5 A | 750 W | 443 mm | 133 mm | 350 mm | 10 kg |

MCA 1500-1500 | 1.5 kV | 3 A | 1.5 kW | 443 mm | 177 mm | 450 mm | 17 kg |

MCA 3000-1500 | 1.5 kV | 6 A | 3 kW | 443 mm | 177 mm | 650 mm | 32 kg |

MCA 6000-1500 | 1.5 kV | 12 A | 6 kW | 443 mm | 355 mm | 650 mm | 61 kg |

MCA 9000-1500 | 1.5 kV | 18 A | 9 kW | 443 mm | 535 mm | 650 mm | 90 kg |

MCA 750-3000 | 3 kV | 750 mA | 750 W | 443 mm | 133 mm | 350 mm | 10 kg |

MCA 1500-3000 | 3 kV | 1.5 A | 1.5 kW | 443 mm | 177 mm | 450 mm | 17 kg |

MCA 3000-3000 | 3 kV | 3 A | 3 kW | 443 mm | 177 mm | 650 mm | 32 kg |

MCA 6000-3000 | 3 kV | 6 A | 6 kW | 443 mm | 355 mm | 650 mm | 61 kg |

MCA 9000-3000 | 3 kV | 9 A | 9 kW | 443 mm | 535 mm | 650 mm | 90 kg |

Mains connection | ≤ 1500W: 230V ±10% 47Hz to 63Hz ≥ 3000W: 400V ±10% 47Hz to 63Hz, three-phase |

Ambient temperature | 0°C to +40°C |

Setting range | from approx. 0.1% to 100% |

Setting resolution | ±1 x 10^{-4} |

Residual ripple (0-10MHz) | < 2 x 10^{-4}pp + 200mVpp |

Recovery time | Voltage control: Current control: |

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

Discharge time constantfor output without load | approx. 10sec for MCA NCA have active down regulation. |

Deviation | for ±10% mains voltage variation: for no load / full load: over 8 hours under constant conditions: within the temperature range: |

- Auto ranging characteristic with constant power limitation
- 5 power classes and 6 Voltage classes: 55V to 3000V
- up to 1500V with floating output
- compact size (19″ case), light-weight and high efficiency
- short-circuit & flashover proof
- unlimited operation with nominal power (even in short-circuit conditions)
- voltage and current regulation with automatic, sharp transition and additional power limitation
- control mode indicated by LED
- 4½ digit DVM for voltage and current for all power classes
- voltage and current setting with10-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 also for capacitive loads
- sense connections to compensate voltage drop at the load cables for NCA
- active down control for NCA