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Pump units control device YYNY type

The device is designed as a variable-frequency drive for pumps to replace less efficient throttle controlled systems. The device is used in pump units of cold and hot water supply. Number of controlled pumps is from 2 to 10. The devices are manufactured for both the inner market and export.
Designer and Manufacturer: PJSC «DEG».

Figure 1 - Functional diagram of the pump unit.

The devices are designed as an enclosed cabinet which contains the following:

  • frequency converters;
  • switching low-voltage equipment;
  • input/output and interface units;
  • alarm and display elements.

Cabinets are designed for mounting on a horizontal surface or a vertical wall.
The devices may contain a different number of switching units, controls, alarm and display elements, depending on the circuit solutions (on demand). The number and size of cabinets depends on the set
of elements in the device.

The devices support the following:

  • pump group alternate soft start with successive switching to mains;
  • connection of any or only one pump drive motor to the frequency converter and the frequency control of its speed to maintain a preset process variable in the automated control system;
  • periodic change of working and standby pump units, their operation mode change and control according to a preset algorithm;
  • connection of any not connected to a frequency converter pump drive motors to mains;
  • operative selection of the pump drive motor when switching from one pump to another;
  • pump drive motors overload and short circuit protection;
  • energy efficiency.

The device provides a savings of 30% to 90% of electricity depending on the regulation range.
The device makes it possible to reduce the wear of electrical equipment, pumps, lock valves and pipelines, 1.5 to 2 times increases service life and overhaul life of equipment.
Functional diagram of the pump unit is given in Figure 1.

  • ambient temperature from 0 °С to +40 °С;
  • relative humidity is up to 80% at the temperature of + 25 °C (without moisture condensation);
  • environment should not contain current-conducting dust or explosive mixtures and vapors of acids and alkalis;
  • altitude above sea level is to 1000 m.

Warranty operation life is 12 months from the date of commissioning.

Warranty operation life of the installations exported is not more than 18 months from the date of the state border crossing.


Export Department:

Elena Kats
tel.+38 (050) 422-79-27
e-mail: elena.kats@deg.com.ua