The features of the SKCA and SKCB full frequency conversion series products are as follows:
Employing the latest digital integrated full-frequency conversion control technology, this system consists of two or more frequency conversion water pumps connected in parallel. The difference between this product and traditional mobile frequency conversion water supply equipment (i.e., single frequency conversion control technology) is that each water pump is equipped with a corresponding digitally integrated frequency conversion control system. All pumps can simultaneously change frequency, and the pump unit operates in a frequency-frequency-frequency-frequency-frequency conversion mode. Furthermore, a problem with any one frequency converter will not affect the operation of the other pumps. The equipment offers significant energy savings, more stable operation, and enhanced safety.
(I) Comparison of Operating Principles
Single frequency conversion water supply equipment
Traditional single-frequency inverter water supply equipment: When water consumption is less than the flow rate of a single pump, one pump is started first, and the pump operates at the inverter frequency. As water consumption increases, the frequency increases, causing the pump speed to increase. When the flow rate of a single pump is less than the water consumption and less than the flow rates of two pumps, the second pump starts at the inverter frequency, while the first pump switches to the fixed frequency operation. This continues until the third pump starts at the inverter frequency, at which point the first and second pumps switch to the fixed frequency operation. When water consumption decreases, the pumps are decommissioned in a first-in, first-out order. This operating mode is usually called mobile inverter mode. Because the equipment is equipped with only one inverter, at most one pump can operate at the inverter frequency during operation.
SKCA Full Variable Frequency Water Supply Equipment
SKCA/SKCB full frequency conversion series water supply equipment: When water consumption is less than the flow rate of a single pump, only one pump is started first, operating at a variable frequency. As water consumption increases, the frequency increases, causing the pump speed to increase. When the flow rate of a single pump is less than the water consumption and less than the flow rates of two pumps, the second pump starts at a variable frequency, and the control system calculates and distributes the water consumption evenly to the first and second pumps. This continues until the third pump starts at a variable frequency, at which point the first, second, and third pumps operate with an even distribution of water consumption. When water consumption decreases, the pumps that started first are deactivated in a first-in, first-out order. This equipment operates on a one-to-one frequency conversion basis, and multiple pumps can operate at the same frequency simultaneously during operation.
(II) Comparison of Application Features
Traditional single-frequency water supply equipment:
1. Unsafe: Multiple water pump units share one frequency converter. When the frequency converter fails, the entire set of equipment will not be able to work properly.
2. Unstable: Frequent switching between power frequency and variable frequency causes temporary fluctuations in water pressure during the switching process;
3. High energy consumption: Due to frequent fluctuations in water usage, variable frequency pumps often operate outside their high-efficiency range, resulting in higher unit energy consumption. Furthermore, the longer the pump operates in its inefficient range, the higher the unit energy consumption of the equipment will be. This is why some people say that variable frequency water supply equipment is not energy-efficient and has high energy consumption.
SKCA/SKCB Full Variable Frequency Water Supply Equipment:
1. Safety: Each pump in the full frequency conversion water supply system is equipped with a frequency converter. When one frequency converter or pump fails, the other pumps can still operate normally.
2. Stability: Because each water pump switch is performed using frequency conversion, water pressure fluctuations are minimal;
3. Energy saving: Since multiple water pumps can be frequency-controlled at the same time, it can ensure that the water pumps operate in the high-efficiency range most of the time, which can greatly reduce the unit energy consumption of the equipment unit and make it more energy-efficient!
