Temporary power consumption projects for infrastructure projects
Project overview
Provide full-cycle power supply services for high-speed rail site construction, including 1600kVA box-type substation leasing, cable laying, three-level power distribution construction, power acceptance and delivery, and on-site operation and maintenance.
Indonesia fit
Provide the general contractor with integrated power supply services including box-type transformer rental, three-level power distribution, acceptance and delivery, on-site operation and maintenance, and on-site recycling, to solve the problems of idle self-purchased equipment, repeated specification approvals, and uncontrollable construction schedules; the solution is suitable for multi-department acceptance of Indonesian infrastructure projects, rainy season construction, and frequent changes in site loads.
Professional configuration and standards
The 1600kVA box transformer is configured according to IEC 60076, IEC 62271, and IEC 61439, and the low-voltage power supply is configured according to three-level power distribution and two-level protection, TN-S grounding, 30mA/100mA graded leakage protection and SNI/PUIL Construction electricity requirements are implemented; withstand voltage, ground resistance, leakage protection action, phase sequence, load trial operation and cable insulation tests are completed at the factory and on site. The on-site team is responsible for daily inspections and monthly infrared temperature measurements.
Key specification comparison table
| Configuration items | common practice | Optimized delivery specifications and value |
|---|---|---|
| Procurement model | One-time purchase box change, exit and idle | Leasing + entry and exit in stages, matching construction nodes |
| protection architecture | Temporary pull cord, incomplete protection | Three-level power distribution and two-level protection, TN-S grounding, leakage protection classification |
| Acceptance and delivery | The general contractor coordinates multiple departments on his own | Handle safety supervision/PLN acceptance, provide test records and completion documents |
Delivery challenges and solutions
a.Challenge: The construction period is tight, and the local safety inspection and acceptance standards are strict, so it is easy to stop the work for rectification due to compliance issues.
Solution: Adopting a standardized three-level power distribution and two-level protection structure, we handled the local safety supervision and PLN acceptance procedures on behalf of the company, with 100% passing the inspection and zero rectification and suspension of work.
b.Challenge: The construction site is located in a hilly area, where laying cables is difficult and the risk of theft is high.
Solution: Adopting an underground cable laying solution and supporting a cable anti-theft alarm system, the troubleshooting time is shortened by 80%.
c.Challenge: The construction schedule changes frequently, and fixed procurement equipment is left idle and wasted.
Solution: The box-type substation leasing model is adopted to support entry and exit in stages, and flexible scheduling of construction nodes, significantly reducing idle equipment costs.
Project results
The power supply cycle is shortened by 50%, and the project starts ahead of schedule; the leasing model reduces the comprehensive cost of power supply by 45%, eliminating the need for later equipment disposal.