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Industrial Power Supply COTEK AEK-3000HV

Highlights & Details

  • Input voltage: 90-264VAC, 127-370VDC
  • Output voltage: adjustable from 0 to 105%
  • Power: 3000 watts
  • Parallel operation with up to 8 devices
  • Control via RS485 and I²C (integrated in Oring version)
  • Control via RS232 (RS485-to-RS232 converter required)
  • Power OK signal
  • Remote On/Off
  • Remote Sense
  • Overvoltage protection
  • Overload protection
  • Overtemperature protection

Description

  • Built-in Oring diode to minimize signal interference and improve communication characteristics
  • Integrated RS485 and I²C modules for central control of multiple power supply units
  • Serial connection allows output voltage up to 800 VDC with high power density

The output voltage and current can be adjusted from 0% to 105% via analog or digital interfaces. A free graphical user interface (GUI) is available on request.

In addition, COTEK’s AEK series can be operated in series or parallel mode with full current sharing. This enables the design and deployment of flexible, cost-effective power supply systems with high power density of up to 24 kW.

Additional Advantages

  • Extremely compact design with integrated fans
  • Wide input voltage range 90-264 VAC, 127-370 VDC
  • Variants: 150 V, 200 V, 250 V, 300 V, 400 V
  • Series connection enables output voltage up to 800 V
  • Current limiting
  • Output voltage adjustable in a range of 0% - 105%
  • Output current adjustable in a range of 0% - 105%
  • Parallel operation (control of up to 8 devices via expansion board CT-251 for master, plus one CT-551 for each slave)
  • Series operation up to max. 500VDC (control of up to 8 devices via expansion board CT-204)
  • Set and actual values of the device can be read/monitored: voltage, current, temperature
  • Reading of status flags
  • Selectable auxiliary voltage: +5V / 0.5A or +9V / 0.3A
  • Power OK signal
  • Remote On/Off
  • Remote Sense
  • Protection: Overvoltage protection (OVP), overload protection (OLP), overtemperature protection (OTP), fan failure

Applications

Charging technology, motors, laser technology, water treatment, industrial furnaces, etc. – everywhere variable voltages and currents are required.

Control

  • Simple control via potentiometer (expansion board EasyAdjust3000) or control voltage
  • Communication/control via I²C (communication protocol on request)
  • RS485 / RS232

Properties

Type: Enclosed
No. of Output Voltages: 1 - Single
Application: Industrial, Programmable, IT Technology
Protection Class: Protection Class I
Input Connector: Screw Terminal
Output Connector: Screw Terminal
For Region: Europe, USA / Canada
FAQ

External Power Supplies (Plug-in and Desktop Power Supplies)

Find practical answers to frequently asked questions about our external plug-in and desktop power supplies for industrial, medical, and IT applications. These articles support you with selecting the appropriate model, navigating country-specific mains plug options, and ensuring safe commissioning and troubleshooting.

For an external power supply unit (e.g. a desktop power supply) to operate safely, four criteria must match your device: voltage, current, polarity, and connector dimensions. You will usually find the required ratings on your device’s rating plate (typically under "Input") or on your previous power supply under "Output".

  1. Voltage (volts / V) – must match exactly: The output voltage of the power supply unit must match your device's input voltage precisely. Excessive voltage can permanently damage the electronics; insufficient voltage will cause the device not to start or to run unstably.
  2. Current (amperes / A) – may be higher: The power supply unit must supply at least the current required by the device. A higher ampere or wattage rating on the power supply poses no risk, as the device only draws the current it actually requires.
  3. Polarity – must match: Check the polarity symbol on the device. DC barrel connectors are usually centre-positive (positive pole inside). The replacement power supply must have identical polarity.
  4. Connector dimensions (DC barrel connector): The connector must fit securely and smoothly into the socket. Common dimensions specify the outer and inner diameters (e.g. 5.5 × 2.1 mm or 5.5 × 2.5 mm). If socket dimensions are non-standard or unclear, universal power supplies with an adapter set can help.

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