Disassembling a cast resin busway is a heavy-duty engineering procedure that requires certified personnel and strict safety protocols. The process begins with absolute power isolation using Lockout/Tagout (LOTO) procedures. Due to the solid epoxy resin encapsulation, these busway sections are exceptionally heavy; therefore, dismantling requires removing the joint blocks first, followed by utilizing proper rigging and hoisting equipment to safely lower the sections without cracking the protective resin casing.
Unlike standard sheet-metal busways, cast resin busways feature conductors completely embedded in a solid epoxy compound, giving them extreme weather and chemical resistance, but also significantly increasing their weight. Proper disassembly requires a methodical approach:
- 1. Strict Power Isolation (LOTO Procedures): Before any physical work begins, the main power supply must be completely cut off. Certified electricians must apply strict Lockout/Tagout (LOTO) protocols and verify zero voltage using industrial multimeters to guarantee a safe working environment.
- 2. Dismantling the Joint Connections: The disassembly starts at the joints. Technicians must carefully unbolt the torque-indicating bolts and remove the connecting joint blocks (or splice plates). If the joints were additionally sealed with waterproof resin compounds (common in outdoor IP68 installations), this seal must be professionally cleared to separate the sections.
- 3. Rigging and Mechanical Support: Because cast resin sections are dense and heavy, manual lifting is strictly prohibited. Heavy-duty rigging, such as chain hoists or mechanical lifts, must be secured around the busway section before the mounting brackets or hanger drops are loosened.
- 4. Controlled Extraction and Inspection: Once detached from the mounting supports, the busway section is slowly lowered to the ground. It is critical to avoid any impact or dropping, as severe physical shock can crack the epoxy resin insulation. The dismantled sections should be placed on wooden pallets and properly covered for safe storage or transportation.
