Water Supply Equipment
KYG series variable frequency speed control constant pressure water supply equipment
The KYG series variable frequency speed control constant pressure water supply equipment incorporates the world’s most advanced variable frequency technology. It employs imported brand-name frequency converters and uses programmable logic controllers (PLCS) to adjust the speed and number of pumps (single or multiple units), achieving closed-loop regulation of constant pressure variable water supply. This ensures the most rational and economical operation of the water supply system while enabling fully automated operation.The product features a compact structure, comprehensive functionality, and a small footprint. It replaces traditional water towers and elevated water tanks, saving on project costs, shortening construction timelines, and preventing secondary water contamination.
Applications
*Domestic and fire water supply for ordinary residential buildings, commercial-residential buildings, and residential communities.
*Domestic water supply for multi-story buildings such as office buildings, commercial buildings, and clubs.
*Domestic and fire water supply for high-rise buildings, high-end hotels, and restaurants.
*Production and domestic water supply for industrial and mining enterprises.
*Various types of water treatment plants and booster pumping stations.
*Central heating and air conditioning circulation systems.
*Sewage treatment systems.
*Petroleum, chemical, and pharmaceutical systems.
*Boiler constant pressure make-up water systems.
*Agricultural irrigation, garden sprinkling, water features, and musical fountains.
Product Features
*High Efficiency & Energy Saving
The system automatically adjusts pump speed and operating units based on water demand, ensuring optimal efficiency and significant energy savings.
*Stable Water Pressure with Adjustable Set Pressure
Closed-loop control maintains constant pressure by automatically compensating for differences between actual and set values.
*High Automation, User-Friendly Operation
Equipped with a programmable logic controller (PLC), the system enables unmanned operation with simple controls.
*Comprehensive Protection Functions
Features safeguards against short circuits, phase loss, overcurrent, overvoltage, overheating, and overload.
*Extended Lifespan for Motors & Pumps Soft-start via frequency conversion reduces electrical grid impact and water hammer effect. Pumps operate in a rotating sequence (first-in, first-out) to ensure balanced wear.
*Reduced Contamination & Maintenance Eliminates the need for elevated water tanks, preventing secondary pollution and reducing cleaning efforts.
*Cost-Effective & Time-Saving Installation Compact design minimizes space requirements, lowers investment costs, and shortens construction timelines.
Working Conditions
*Ambient Temperature: -5℃ to 40℃
*Ambient Humidity: <90% (no condensation)
*Altitude: ≤1000m
*Power Supply Voltage: 380VAC ±5%
*Power Supply Frequency: 50Hz ±5%
*Vibration: <0.5G
*Ambient Atmosphere: Non-corrosive, non-flammable gases, minimal dust.
Technical Parameters for Control System
*Flow Range: 0–2000 m³/h (per pump)
*Pressure Range: 0–2.7 MPa
*Number of Pumps Controlled: 1–6 main pumps + 1 small pump
*Rated Motor Power per Pump: 0.55–315KW
*Constant Pressure Mode: Pump outlet pressure stabilization
*Control Method: Digital PID
*Input Signals: Voltage (DCO–10V), Current (0–20mA)
*Operation Mode: Multi-pump parallel operation
*Startup Method for Mains Frequency Circuit: Direct start for motors ≤22 kW，Reduced-voltage start for motors ≥30 kW
*Control Accuracy: ±0.01 MPa
*Stabilization Time: ≤40 seconds
*Noise Level: ＜ Pump rated noise
*Protection Rating: IP40
ViRheos
