14-Module Two-Tier Power E-House

The lower modules are engineered around the line-up: cubicle positions, front operating aisle and rear maintenance space follow the cubicle type, line-ups can run continuously across adjacent modules, and the module walls leave a transition at each mating face. The floor is a cable trench under removable covers; cable enters from the foundation cable layer and is terminated, fixed and phase-marked inside the trench. Switchgear assemblies and protection panels are customer-supplied or integrated within the agreed scope, and their voltage, current and short-circuit ratings are governed by the equipment supplier's technical agreement; ETENZ is responsible for the mounting bases, internal interfaces and inter-cubicle connections.

The eight lower modules open onto each other at their mating faces, stringing one aisle through the full length so an operator can walk to the far end without stepping outside. The aisle floor sits flush with the trench covers, linear lighting and emergency lighting run the length of it, and the clear width follows front-of-cubicle operation and equipment access. Opening positions and module partitions are confirmed against the equipment layout; where separate compartments are required, doored partitions replace the openings and the aisle stays continuous.

Power and control cable run on separated tray tiers or divided ducts, with bending radii and fixing intervals set by cable type and spare capacity left between tiers. Cables crossing levels run up the riser to the upper tier, sealed and fire-stopped where they pass through the floor. Cable screens and equipment earths collect on the earth bar (PE) and bond into the enclosure's equipotential system; site earth-grid parameters and earthing responsibility are set project by project.

Climate control is specified module by module rather than building-wide: each module's wall-mounted air conditioning and ventilation is sized to its own heat load, a hot primary module shares no air path with a control module, and taking one unit out of service leaves its neighbours untouched. Air conditioning, lighting and maintenance sockets are fed from that module's auxiliary distribution box, whose circuits and control devices follow the load inside. Cooling capacity is confirmed against heat load; environmental design targets are configurable, typically −40 to +55 ℃ operating and up to 4000 m altitude with derating.

Supply and exhaust openings with louvres are paired along the airflow direction, fitted with stainless mesh guards and removable filters, and weather-hooded and sealed outside so airflow and the IP54/55 protection target hold together. Emergency lighting and escape signage inside switch over automatically on loss of mains. Detection, alarm and interlock interfaces are brought out to the module wall during fabrication; suppression equipment can be supplied and installed within scope, or specified and free-issued by the customer.