Wolong High-Voltage Variable Frequency Drive Case Study | Pakistan K Electric Power Supply Project | Medium-Voltage VFD System Bidding and Engineering Delivery

Wolong Electric (Zhejiang) Power Electronics Co., Ltd. (Address: Room 202, Building E, West Section of People's Avenue, Caopo Street, Shangyu District, Shaoxing City, Zhejiang Province, No. 1801) hereby issues Authorization Letter NO.WLPEFX20260019, authorizing Techno Control Pvt. Ltd. (Lahore, Pakistan) to use our Variable Frequency Drives (VFDs) for bidding on the K Electric VFDs project. This authorization is valid from 2026/9/1 until the conclusion of this project. Technical Clarification: The ten tender requirements have been confirmed individually: - Complete GA drawings, single-line diagrams, wiring diagrams, schematic diagrams, logic diagrams, and cable schedules will be provided approximately 2 weeks after contract signing. - Wolong VFDs can coordinate with existing medium-voltage system protection (existing protection logic must be provided). - External interface specifications and control power requirements will be provided as scheduled. - Fire detection and extinguishing protection are typically handled by the medium-voltage system. If implemented via the VFD, external smoke detectors or alarm signals must be connected to the VFD. - Cabinet dimensions, room space requirements, and HVAC specifications will be provided as scheduled. - A complete signal exchange list will be submitted upon order receipt and prior to shipment. - Foundation drawings (including structural details, installation dimensions, and civil engineering requirements) will be provided 2 weeks after contract signing. - Engineering software and configuration file backups will be delivered with the equipment (excluding DSP/FPGA core control source code). - Upon equipment delivery, technical personnel will provide operations and maintenance training to client engineers and deliver the system manual. Equipment layout for RFQ1 and RFQ2 projects awaits owner confirmation (centralized in a single room, distributed across rooms, or arranged according to process requirements). Overseas Performance Support: The same platform high-voltage VFD has been successfully deployed in 16 overseas projects, including: 6560kW motors at Saudi Arabia CG test bench; 6000kW pumps at SEVERN; 4000kW fans in Kenya; 3700kW injection pumps at AL-WAHA oilfield, Middle East; 3000kW fans at Rio Tinto, South Africa; 2250kW pumps at DAINSA, Mexico; 2240kW compressors at GGL-II, Karachi, Pakistan; and 2000kW compressors at ATB, Germany. Applications cover motors, pumps, fans, injection pumps, compressors, ball mills, hoists, crushers, rubber mixers, and presses.