Battery Energy Storage Enclosure (48 packs, 5 MWh)

Yes. The core supply from ETENZ is the enclosure and the battery racks: compartmented shell structure, full-side doors along the long side, zone partitions, 48-position battery racks, and the reserved interfaces for liquid cooling, dehumidification, fire protection, LV distribution and monitoring. Battery packs, PCS and BMS are outside the default scope — they are free-issued by the customer or integrated within the agreed project scope. Which tier you take is your call: bare-shell supply, subsystem integration, finished cabin delivery or OEM/ODM private-label are all available, and the delivery tiers on this page spell out what each one contains.

5 MWh is the nominal capacity this cabin reaches with the current pack configuration, and 48 is the number of positions the rack is designed around; both follow the pack model. Change the pack and the arm tier heights, position pitch, per-tier loading and coolant connection points are re-laid to the new pack's envelope, weight and anchor points — the total number of positions moves with them. The usual route is for ETENZ to issue the standard rack and envelope drawing first and have the battery side confirm against it, which saves a round compared with reworking the racks during assembly. Capacity, efficiency and cycle life are defined by the battery and system parties.

No cold plate. What ETENZ supplies is the whole-cabin liquid-cooling package: the chiller, the distribution manifold, the hoses and quick couplings to each rack, and flow balancing between racks. The cold plate sits inside the battery pack and belongs to the pack design. Cooling capacity is selected against the heat load given by the system party, and the chiller is normally mounted outside — end wall, roof or on a skid — with its position drawn on the layout because it affects your footprint. Cell temperature and temperature-spread targets are met jointly by the cabin side and the pack side, not guaranteed by the cabin alone. Liquid cooling is the mainstream configuration for storage cabins today; air-cooled builds have been delivered too, generally only where capacity is small or a particular site calls for it.

On the LV side, yes: LV auxiliary distribution and control cubicles, lighting and emergency lighting, sockets, earthing and equipotential bonding, and the internal power and control wiring are all in scope. On the DC side it follows the project scope — in-cabin DC combining, busbars, output terminals and sealed gland plates can be built, and the scope ends at the DC output terminals. Beyond those terminals, the PCS, transformer, MV switchgear and grid-connection equipment belong to the customer or the system party; we issue the DC interface documents — terminal positions, acceptable cable sizes, bending space — to work to.

This cabin uses pipe-network suppression: the manifold connection sits outside, the branch valves have a room of their own, and pipework is run inside to each battery zone. Smoke, heat and combustible-gas detectors report to the fire alarm panel, and the release interlock and the volt-free alarm contacts are wired at the works. The suppression system can be supplied and installed by ETENZ, or specified by you or free-issued — both have been done; either way the detection, alarm and release-monitoring interfaces stay in scope. Explosion venting and combustible-gas-interlocked emergency extract are configured to the project and to local rules: European projects size the vent area, select the vent panels and check the cabin's pressure resistance to EN 14994 / EN 14797. The cabin makes no claim of UL 9540, NFPA 855 or fire-authority approval — that is system-level evidence and local approval territory.

This cabin's outline is non-standard, set by the site conditions and the pack arrangement on the project: at 5650 mm it is about 400 mm shorter than a standard 20 ft box, and at 3288 mm it is taller, trading vertical space back into depth — easier to place where site depth is tight or an existing foundation has to be reused. The trade-off is that it is not an ISO box type, so transport is arranged as an out-of-gauge load rather than as a standard container. If the site takes a standard box and you want ordinary container shipping, the 20 ft containerised storage cabin is the easier option.

The usual route is a battery-ready cabin: racks, liquid-cooling distribution, routing and interfaces all completed, with the packs installed by you or by the system integrator — pack assembly and installation are outside the default scope. The works inspection is cabin-level: structure, cooling under load, fire, LV, IP and circuit tests, with the records issued in the handover file; it does not cover testing of the battery system itself. Having the packs installed and energised under witness means agreeing that scope and the responsibility split separately in the contract.

Two cases. European projects follow the EN family: structure to EN 1993 (Eurocode 3), fire detection to EN 54, suppression to EN 15004 / EN 12094, explosion venting to EN 14994 / EN 14797, LV to IEC 61439-1 / -2, auxiliary supply at 400/230V three-phase + N + PE (TN-S) 50Hz; within scope the delivery carries CE marking (LVD 2014/35/EU + EMC 2014/30/EU), the declaration of conformity and component certificate file, with nameplate and documents in CE format and the destination language. North American projects are adapted to the interface document, nameplate and documentation requirements of UL / NFPA, with the exact scope agreed in the contract. One thing holds either way: CE or standards adaptation covers only the cabin and the systems within ETENZ scope, not the batteries, the PCS or the storage system as a whole. UL 9540, NFPA 855 and fire-authority approval are system-level evidence and local approval; the cabin makes no claim of passing them. Projects in China follow IEC / GB.

Yes. Storage cabins are available under OEM/ODM and customer private-label delivery: brand nameplate, colours and marking language follow your standard, the pack count and rack tier heights are re-laid to your battery pack, and outline dimensions, entry and exit positions and interface standards are aligned to your platform. For a multi-site programme the result can be frozen as one baseline cabin type and interface library, so later batches are copied from the same drawing set and the compliance file follows the same route.

Four things are enough for a meaningful quotation. First, the battery pack's envelope dimensions, weight, anchor points and coolant connection positions and count. Second, the list, dimensions and supply split for the PCS and distribution equipment, plus how far you want the DC side taken. Third, the installation environment: indoor or outdoor, ambient temperature, humidity, altitude and the corrosion class required. Fourth, the outline and transport limits: usable site dimensions, foundation type, lifting method and destination. If you have a layout drawing, a single-line diagram or drawings of an existing cabin type, send those too — it saves a round of questions.