GW-IVC Intelligent Variable‑Frequency Control Cabinet

1. Function Overview

A. High‑efficiency & Energy‑saving

Adopting constant‑pressure variable‑flow and variable‑pressure variable‑flow water‑supply systems, the water pump always operates at its optimal energy‑saving state. Output power increases when water consumption rises and decreases when water consumption drops; output power adjusts automatically according to actual water demand.

Since pump flow rate is proportional to rotational speed, while power is proportional to the cube of rotational speed, remarkable power‑saving effect can be achieved. For example, when flow drops to 80 % of the pump rated value, energy consumption can be reduced to 51.2 %.

B. Stable, Reliable and Highly‑automated Inverter Control Cabinet

Core components adopt water‑supply‑dedicated controllers and high‑quality inverters. With proven technology and high stability, the cabinet adapts to harsh working conditions. Unattended operation is supported for easy management.

C. Low operating noise, stable pressure and high control accuracy for the system

D. Comprehensive Equipment Protection Functions

Protections include over‑current, over‑voltage, overload, phase loss, locked‑rotor, power‑supply phase unbalance, and water‑source shortage protection.

E. Alternating cyclic operation for multiple water pumps

Average working hours of each pump are balanced to reduce risks of pump seizure caused by rust.

F. Extended Service Life

Soft‑start function is available for all connected water pumps, which reduces instantaneous impact and mechanical wear.

G. 4G Remote Monitoring

Built‑in 4G communication module supports remote cloud‑platform monitoring. Real‑time remote viewing is available for pipeline pressure, pump operating status, running current & voltage, and fault alarms. Remote parameter modification and remote pump start/stop are supported. Alarm notifications will be actively pushed upon equipment faults. Access is available via mobile APP and web‑portal; historical operating data can be exported to facilitate remote operation & maintenance.

2. Operating Conditions for Variable‑Frequency Control Cabinet

1. Applicable altitude ≤ 2000 m; derating is required for altitude above 2000 m.
2. Ambient relative humidity: 20 %‑80 %.
3. Ambient temperature around cabinet: ‑10 ~ 40 ℃; 24‑hour average temperature shall not exceed +35 ℃ (internal cabinet working temperature ≤ 50 ℃).
4. No conductive dust or corrosive gas that may damage metal and insulation shall exist on‑site.
5. No violent vibration or shock; equipment tilting angle shall not exceed 5°.
6. Power‑supply voltage fluctuation range: ±10 %.

3. Working Principle of Variable‑Frequency Control Cabinet

During normal system operation, the controller samples water‑pressure signals from pipeline pressure sensors. Measured pressure values are compared against preset internal pressure values. Analog signals are output after PID calculation to adjust inverter output and regulate pump flow, so as to realize variable‑flow constant‑pressure water supply.

Technical Specifications

Soft‑start & variable‑frequency speed‑regulation control cabinet

Item	Parameter
Controlled Motor Power	0.18‑250 kW
Control Voltage	380 V
Number of Controlled Motors	Configurable on demand
Pressure Control Accuracy	±0.02 MPa
Applicable Altitude	≤2000 m (derating required for altitude＞2000 m)
Ambient Temperature	‑25 ℃ ~ +40 ℃
Relative Humidity	≤95 %, non‑condensing
Vibration	＜0.5 G