Customized Frequency Inverter Guarantee Water Supply in Slovakia

INVT frequency inverters meet the strictest criteria, and the inverters have been certified by TÜV SÜD Germany.

The frequency drives we supply have special software for controlling pumps for constant pressure water supply and irrigation systems. The use of inverters to control pumps is an ideal solution for requirements for different amounts of water taken during the day (public and private water distribution, apartment buildings, houses, gardens, swimming pools, heat pumps ...). The inverters can cascade several pumps by using contactors and relay outputs. The inverters provide full protection of the electric motors, which is much more effective than protection with motor starters. The inverters also protect the pumps against dry running issue; they have the option of connecting level probes and a ball valve with a drive for automatic filter rinsing. We offer free technical support and advice. We can individualize the parameterization of inverters according to special customer requirements. After connecting the power supply and the electric motor, the inverter is ready for immediate use.

Advantages:
• saving electricity
• incomparably higher user comfort (constant pressure in the system prevents unpleasant fluctuations in flow and water temperature)
• constant water pressure in the system without fluctuations even when the amount of water taken changes
• lower input costs for the pressure vessel, a significantly smaller pressure vessel (8-24l) is sufficient compared to controlling the pump with a pressure switch
• longer service life of the rubber bag of the pressure vessel (due to the constant pressure, there is no periodic expansion and compression of the bag, even when the vessel is not regularly inflated)

Features:
• Slow start and deceleration of the pump will significantly reduce resp. completely removes sandblasting of the well (significantly extends the life of the pump and well)
• quiet operation of the pump without pressure shocks when the pump is switched on and off
• The INVT GD10 is ready for immediate use after connecting the wires
• possibility of connecting a level probe for measuring the height of the water level in the well with the display of the inverter (possibility of automatic reduction of the pump power when the water drops in the well, alarm ...)
• inverters provide full protection of the electric motors of the pumps (no motor starter required)
• protection against dry running, undervoltage, overvoltage, phase failure and more than 20 other types of protection
• when the water in the well is depleted, the pump stops and starts again automatically when the water level in the well rises or after the set time has elapsed
• detection of pipe rupture, damage to the pump blades with subsequent blocking of the pump operation
• protection against damage to the sensor or damage to the sensor wires
• possibility of automatic pressure change by the irrigation control unit during irrigation to other preset pressures (up to 16 different pressures) than the pressure used during normal operation (no use of pressure reducing valves)
• simple and fast change of pressure in the system, regulation range from 0 to 10bar, the required pressure is simply selected on the control panel (over 10bar consult your dealer)
• The inverter automatically regulates the pump speed depending on the amount of water taken and when the water draw is completed, the inverter enters sleep mode
• the inverter wakes up from sleep mode when the pressure drops 0.25 bar below the setpoint
• after stabilization of the consumption, it is possible to achieve an accuracy of up to ± 0.01 bar, which represents at the required pressure
for example: 3.5bar control accuracy in the range from 3.49 to 3.51bar
• the basic equipment of the inverter includes a motor hour meter and an electricity meter with the possibility of resetting the counter by the user (allows monitoring of operating costs and service intervals)
• possibility of connecting an external control panel with display of various parameters (current pressure, current, pump power, operating hours, electricity consumption, ..) with the possibility of placing at any distance from the inverter
• possibility of connecting a ball valve for automatic filter cleaning in selected intervals of 0.1-3600 hours, depending on the time or running time of the pump (operating hours)
• accurate calibrated pressure sensor in stainless steel design with 5m shielded cable ensures long equipment life and precise pump control
• fault detection with display of alphanumeric characters on the display with the possibility of external signaling
• recommended distance between the low voltage inverter and the pump up to 50 m (above 50 m it is necessary to use a ac output reactoror sine wave filter)
• possibility to connect pump operation signaling (LED, bulb, GSM, sound signaling ...)
• possibility of connection to a computer, display of status and physical quantities on a computer, control of the pump via a local computer, resp. remotely over the internet
• possibility to increase protection to IP66, contact your dealer