KoCoS Blog

When testing electrical components, such as motors, accurate, reliable and powerful power supplies are required. Furthermore, in production, many processes are automated where time is an important factor in testing.

The voltage sources of the EPOS CV series are designed for above mentioned requirements, where adjustable output voltages up to 270 VAC / 300 VDC are needed.

A special feature of the EPOS CV voltage sources is the variable transformer with a fast motor drive that controls the AC/DC output voltage. A variable transformer is used because it enables a continuously adjustable voltage and is insensitive to current peaks. With the EPOS CV voltage sources, the output voltage can thus be steplessly adjusted to the respective requirements automatically and manually. 
The voltage sources are provided with internal voltage and current measurements via a controller, which significantly increases the efficiency of the system. The internal measurement electronics permanently control and regulate the values and ensure function monitoring. Among other things, the voltage sources are overload-protected with a circuit breaker that disconnects the output circuits in the event of a short circuit, for example. 
The series has been equipped with a convenient operating unit with touchscreen, jog wheel and function keys. The system is easy to operate and extremely user-friendly due to the control unit and display.
The output voltage can be set in stand-alone mode via the rotary knob. In automatic mode, the EPOS CV voltage sources can be easily integrated into own applications via an Ethernet interface.
The voltage sources of the EPOS CV series are available in different power classes. They are used wherever continuously adjustable DC and AC voltages in the range up to 270 VAC or 300 VDC are used. All models are suitable for connection in the frequency range 50 Hz / 60 Hz. 

Typical data of the motor-driven EPOS CV voltage sources are:

EPOS CV 821

  1. one phase
  2. 1 x 15..270 VAC
  3. 1 x 15..300 VDC
  4. 1 x 30 AAC
  5. 1 x 20 ADC
  6. 8,1 kVA

EPOS CV 831

  1. one phase
  2. 1 x 15..270 VAC
  3. 1 x 15..300 VDC
  4. 1 x 40 AAC
  5. 1 x 30 AAC
  6. 11,5 kVA

EPOS CV 753

  1. three phase
  2. 3 x 15..300 VACPN
  3. 3 x 15..520 VACPP
  4. 1 x 15..300 VDC
  5. 3 x 25 AAC
  6. 1 x 32 ADC
  7. 22,5 kVA

EPOS CV voltage sources provide both a high output voltage and a high output current. Especially when operating motors, large starting currents occur when the full rated voltage is applied, which can be many times the rated currents. The voltage sources are capable of supplying these current peaks up to 10 times the rated current of the load during the switch-on process.

Testing is the only way to ensure that electrical components function correctly. By analyzing the curve signatures of the actuating and operating currents and the resulting characteristics, it is possible to make accurate statements about the behavior of components and thus draw conclusions about their electrical and mechanical condition. For such analyses, KoCoS provides powerful AC/DC sources in the form of the EPOS CV series of voltage sources.

Would you like to find out more? You can find more information at the following link or contact us by mail at info(at)kocos.com.

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