(I). Pump Requirements
★1. Flow rate requirements: At 600m³/h, head requirement ≥8 meters; at 520m³/h, head requirement ≥10 meters; pump efficiency ≥60%. The above requirements must be based on measured data with no negative deviation. Provide data, head, flow rate, power, curve charts, and test reports issued by national-level testing institutions with CMA and CNAS certifications.
★2. Rated pump power ≥22KW, weight ≤38kg, rotational speed ≥3300 rpm, solid passage size ≥28mm, insulation class ≥H, protection rating ≥IP68, outlet diameter ≤DN200 (provide test reports issued by national-level testing institutions with CMA and CNAS certifications).
▲3. Submersible pump motor type: Permanent magnet synchronous motor;
▲4. The entire pump is made of wear-resistant and corrosion-resistant 304 stainless steel in a single piece; Vickers hardness (HV) of impeller, pump casing, impeller chamber, and guide vane ≥1000.
5. Voltage and wiring method: Voltage 380V; Wiring method: Three-phase four-wire. 6. Cable: Each pump comes with 20 meters of submersible-grade cable, using waterproof quick connectors with protection rating ≥IP67,
(II) Control System
1. The control system base is equipped with silent wheels and handles on both sides for easy transport. The control system has a visual operation interface, allowing control instruments to clearly display operating parameters in darkness or sunlight. It monitors operating parameters in real-time, featuring display functions for leakage, current overload, phase loss, overvoltage, undervoltage, overfrequency, underfrequency, and motor overheating, along with corresponding safety protection measures.
2. The control system uses variable frequency control, allowing adjustable pump motor speed.
▲3. Control cabinet protection rating: ≥IP55.
"▲" indicators are key technical parameters; national-level third-party test reports must be provided as valid proof according to parameter requirements. Failure to provide them will be treated as a negative deviation.
