Yes — that is the first tier, Bare-Shell Supply (Interfaces Reserved). ETENZ provides the structure, envelope, anti-static raised floor and cable trunking, panel steel bases, battery rack, penetrations, earthing and electrical interfaces, and your own or your nominated panel builder does the installation and wiring. Send the panel schedule, outline dimensions and base fixing arrangement early, so steel bases and penetrations can be set out once during manufacturing.
ABS
ISO 14001
ISO 45001
ISO 9001
115/22kV Secondary Equipment E-House
For substation main contractors, power system integrators and protection & control panel builders — secondary panels line up along one side, over an anti-static raised floor with a cable layer and a station DC battery rack; enclosure manufacturing plus subsystem integration, from bare shell to OEM/ODM.
Secondary Equipment E-HouseSwitchgear Room & Distribution RoomPLC/MCC Control RoomRenewable Grid-Connection Power DistributionCustom Equipment Integration Unit
Key Metrics
One-piece, single level
Structure
25years
Design life
IP54·55
Ingress
C3-C5
Corrosion
Product Features
Single-side panel lineup
Protection, control, AC/DC distribution and transformer protection panels sit in one row along a single side, with a full-length operating and handling aisle in front, rear wiring space set by cabinet depth and label strips reserved for bay numbering.
Single-side panel lineup
Protection, control, AC/DC distribution and transformer protection panels sit in one row along a single side, with a full-length operating and handling aisle in front, rear wiring space set by cabinet depth and label strips reserved for bay numbering.
Single-side panel lineup
Protection, control, AC/DC distribution and transformer protection panels sit in one row along a single side, with a full-length operating and handling aisle in front, rear wiring space set by cabinet depth and label strips reserved for bay numbering.
Raised floor cable layer
An anti-static raised floor runs in front of the panels with individually removable chequer-plate covers; power and control cables run in separate trunking below, trunking and mesh tray on different levels, so one span can be opened without lifting the whole aisle.
Station DC battery rack
The battery rack is a two-tier frame braced diagonally at both ends and along the back, fully bolted and epoxy coated; shelf bearers are set out in the factory for the cell type and rows per tier, with DC cables rising directly from the floor layer beneath.
In-house auxiliary distribution
The auxiliary distribution box is designed and manufactured by ETENZ: incomer, lighting, socket, fan and detection circuits each on their own miniature circuit breaker, outgoing cores numbered through a terminal rail, leaving only the external connection for site.
Fire detection and interlock
The fire alarm control panel and module box are assembled and wired in the factory, with detectors, manual call points and sounder-beacons on a loop and interfaces reserved for interlock and remote monitoring; suppression can be ETENZ-supplied or customer-nominated.
Cabin climate and dehumidification
A wall-mounted air conditioner with its own control box works together with intake filters and exhaust fans as a ventilation-plus-cooling combination, sized for the heat and condensation duty of secondary equipment rather than loading one method with the whole demand.
Product Details
Protection, control, AC/DC distribution and transformer protection panels are placed in one row along a single side, label strips reserved for bay numbering, with a full-length operating and handling aisle in front. ETENZ sets out cabinet positions, steel-section bases and cable penetration routes from the customer's panel schedule and station control diagrams; base fixings and rear wiring space follow cabinet depth. The panels themselves are customer-supplied or integrated within the agreed scope, and their electrical performance and protection settings remain governed by the panel manufacturer's technical agreement.
An anti-static raised floor is laid in front of the panels, its chequer-plate covers individually removable to open the cable layer beneath. Power and control cables run in separate trunking, with trunking and mesh tray on different levels to avoid crossings, and earthing conductors follow the same routes and branch off where needed. Floor-layer height is set from cable sizes and bending radii, so one span can be opened for maintenance without lifting the whole aisle and without taking clear height out of the cabin.
The battery rack for the station DC supply is a two-tier frame, braced diagonally at both ends and along the back to act as one structure, fully bolted so it can be carried in as parts and assembled in position, and epoxy coated. Shelf bearer spacing is set out in the factory for the cell type and the number of rows per tier, DC cables rise directly from the floor layer beneath, and the inter-cell connector harness ships with the rack. The battery bank itself is customer-supplied or integrated within the agreed scope, with capacity and configuration governed by the DC system design.
The auxiliary distribution box is designed and manufactured by ETENZ: incomer, lighting, socket, fan and detection circuits each sit on their own miniature circuit breaker across two DIN rails, phase and earth colours follow the marking convention, and outgoing cores are numbered through a terminal rail. Sockets, lighting and switches inside the cabin are pre-wired to the terminal rails to the wiring schedule, cores are ferruled with adjustment length left, so only the external supply and signal connections remain for site.
The fire alarm control panel and module box are assembled and wired in the factory, with cabin detectors, manual fire call points and sounder-beacons connected on a loop, and the panel leaving interfaces free for interlock and monitoring communications. Exit signage and emergency lighting follow the escape route, and the escape door opens directly from inside. Suppression can be supplied and installed by ETENZ or nominated and supplied by the customer; no whole-cabin fire rating is claimed for this unit.
Side-wall intake passes through filters into the cabin and exhaust fans discharge through the opposite wall, each fan behind a stainless perforated guard with an identification plate and removable as a unit for maintenance. Beyond ventilation, a wall-mounted air conditioner with its own control box covers the high-temperature and dehumidification duty, sized for the heat and condensation conditions of secondary equipment rather than loading one method with the whole demand. Lighting, switches and cabling are run with the ceiling and wall panels, with luminaires set along the aisle so they do not conflict with the operating face in front of the panels.
Delivery Scope Options
Scope 1
Bare-Shell Supply (Interfaces Reserved)
Scope 1Bare-Shell Supply (Interfaces Reserved)
Enclosure and provisions only; secondary equipment and station DC are fitted by the customer or their nominated supplier. Structure, envelope, raised floor and cable trunking, panel steel bases, battery rack, penetrations, earthing and electrical interfaces are completed in the factory.
Scope Includes:
Steel frame, corrugated walls, roof and rock-wool insulation
Panel steel bases and battery rack prefabricated to the layout
Anti-static raised floor, removable chequer-plate covers and trunking
Earth bars, doors and penetrations, electrical interfaces reserved
Scope 1
Bare-Shell Supply (Interfaces Reserved)
Scope 1Bare-Shell Supply (Interfaces Reserved)
Enclosure and provisions only; secondary equipment and station DC are fitted by the customer or their nominated supplier. Structure, envelope, raised floor and cable trunking, panel steel bases, battery rack, penetrations, earthing and electrical interfaces are completed in the factory.
Scope Includes:
Steel frame, corrugated walls, roof and rock-wool insulation
Panel steel bases and battery rack prefabricated to the layout
Anti-static raised floor, removable chequer-plate covers and trunking
Earth bars, doors and penetrations, electrical interfaces reserved
Technical Specifications
Product type
Modular power E-House (substation secondary equipment cabin)
Structure
One-piece single level (sectional optional)
Dimensions
Custom to panel lineup and transport conditions
mm · ISO 668 / 1496 (ISO box types only)
Design life
25
years · ASCE 7 (load basis)
Roof / wall panel
Roof 2.0 galvanised steel / wall 1.6–2.0 corrugated steel
mm
Insulation
50 (rock-wool sandwich)
mm · ISO 6946
Ingress protection
IP54 / IP55 (confirmed by layout and openings)
IEC 60529
Corrosion category
C3 / C4 / C5
ISO 12944 (salt spray ISO 9227)
Operating temperature
Typically −40 ~ +55 (configurable)
℃ · IEC 60721-3
Altitude
≤ 4000 (derated)
m
Served voltage class
Project configured (50/60 Hz)
kV
Accommodated equipment
Protection / control / AC-DC distribution / transformer protection panels, station DC supply
Floor system
Anti-static raised floor + removable chequer-plate covers, trunking and mesh tray on separate levels
Climate method
Ventilation + wall-mounted air conditioning (sized to heat load)
Electrical interfaces
Lighting / sockets / earthing / auxiliary distribution / signals
IEC 60445 (marking)
Fire
Detection / alarm / interlock interfaces; suppression ETENZ-supplied or customer-supplied
NFPA 72
Factory testing
Factory inspection + energisation / interlock / functional checks; witness testing optional
Warranty
12 (extendable to 24, project dependent)
months
Certification
ISO 9001 / 14001 / 45001; ABS (American Bureau of Shipping)
| Parameter | Specification |
|---|---|
| Product type | Modular power E-House (substation secondary equipment cabin) |
| Structure | One-piece single level (sectional optional) |
| Dimensions | Custom to panel lineup and transport conditions mm · ISO 668 / 1496 (ISO box types only) |
| Design life | 25 years · ASCE 7 (load basis) |
| Roof / wall panel | Roof 2.0 galvanised steel / wall 1.6–2.0 corrugated steel mm |
| Insulation | 50 (rock-wool sandwich) mm · ISO 6946 |
| Ingress protection | IP54 / IP55 (confirmed by layout and openings) IEC 60529 |
| Corrosion category | C3 / C4 / C5 ISO 12944 (salt spray ISO 9227) |
| Operating temperature | Typically −40 ~ +55 (configurable) ℃ · IEC 60721-3 |
| Altitude | ≤ 4000 (derated) m |
| Served voltage class | Project configured (50/60 Hz) kV |
| Accommodated equipment | Protection / control / AC-DC distribution / transformer protection panels, station DC supply |
| Floor system | Anti-static raised floor + removable chequer-plate covers, trunking and mesh tray on separate levels |
| Climate method | Ventilation + wall-mounted air conditioning (sized to heat load) |
| Electrical interfaces | Lighting / sockets / earthing / auxiliary distribution / signals IEC 60445 (marking) |
| Fire | Detection / alarm / interlock interfaces; suppression ETENZ-supplied or customer-supplied NFPA 72 |
| Factory testing | Factory inspection + energisation / interlock / functional checks; witness testing optional |
| Warranty | 12 (extendable to 24, project dependent) months |
| Certification | ISO 9001 / 14001 / 45001; ABS (American Bureau of Shipping) |
Product FAQs
No. 115/22kV is the voltage class of the substation this cabin serves — an application, not a rating or a performance guarantee for the enclosure. The voltage, current and protection settings of the panels inside are fixed by the panel manufacturer's technical agreement; what the cabin provides is lineup space, clearance and maintenance access, penetrations, earthing and cable routes. Secondary equipment for other voltage classes is laid out the same way, from a new panel schedule.
Yes. The rack is a two-tier bolted structure, and shelf bearer spacing, rows per tier and overall frame size are set out in the factory for your cell type and DC system configuration, then carried in as parts and assembled in position. We need the cell type, single-cell dimensions and weight, rows per tier and the orientation of the layout. The battery bank itself is customer-supplied or integrated within the agreed scope, with capacity and configuration governed by the DC system design.
As a ventilation-plus-cooling combination: side-wall intake through filters, exhaust fans on the opposite side, and a wall-mounted air conditioner with its own control box covering the high-temperature and dehumidification duty, so no single method carries the whole load. Sizing comes from the heat dissipation in the panel schedule, the site temperature and humidity conditions and the temperature band allowed inside. Cooling capacity and dehumidification method are fixed during design from the heat load calculation.
Detection, alarm, interlock and remote monitoring interfaces are ETENZ scope: the fire alarm control panel and module box are assembled and wired in the factory, with detectors, manual call points and sounder-beacons on a loop, and exit signage and emergency lighting along the escape route. Suppression can be supplied and installed by ETENZ or nominated and supplied by the customer, according to project scope. No whole-cabin fire rating is claimed; fire classification and acceptance follow the approval requirements at the project location.
The cabin is built as one piece, manufactured, fitted out and inspected in the factory and shipped complete, so there is no on-site joining work. Lifting is from bottom lifting points — four of them with retractable lugs on the unit shown here — with lug positions and quantity fixed during structural design from cabin length, weight and centre of gravity; the corner posts and rings on the roof are for sea lashing and roof-cover support and are not lifting points. Foundation type, fixing method and transport envelope limits are confirmed during design, and route permits for over-width or over-height moves are arranged by the project or the forwarder.
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