125 kA High-Power Test Lab E-Houses for NR Electric
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Project Overview
ETENZ manufactured five high-power test lab E-Houses for NR Electric's 125 kA AC/DC high-power breaking test system at NR Electric's production base in Changzhou, China: the current source, voltage source, power supply, control room and test cell buildings. The current source, voltage source and test cell buildings are clear-span, with no internal columns; the largest, the current source building, measures 15.4 × 11 × 6.3 m, and the test cell stands 7 m high. ETENZ fabricated each building in sections and joined the sections into complete buildings on site by three-dimensional modular assembly, then fitted out the HVAC, auxiliary power distribution and lighting inside. The E-Houses were delivered in October 2026. On-site commissioning is complete, and the test system is awaiting entry into service.
Service Scope
Five Test Lab E-Houses: Manufacturing, Site Assembly and Auxiliary Systems
ETENZ carried out the structural design and manufacture of all five buildings, assembled them on site by three-dimensional modular assembly and fixed them on their foundations, and fitted out the auxiliary systems inside: HVAC, auxiliary power distribution and lighting (including emergency lighting), the earthing system and the cabling. The control room also has anti-static flooring, a 3 × 1.5 m double-glazed observation window in the wall that faces the test cell, and pre-drilled mounting positions for eight panels and a 12-workstation operator console. NR Electric supplied the power sources, circuit equipment and panels of the test system.
Engineering & Integration
One Building for Each Test Circuit
The current source, voltage source, power supply, control room and test cell each have their own building, from the 11 × 4 × 3.2 m power supply building to the 15.4 × 11 × 6.3 m current source building, and each is sized to the layout and maintenance aisles of the equipment it houses.
Three-Dimensional Modular Assembly, Clear-Span Interiors
Each building was fabricated in sections and joined on site by three-dimensional modular assembly; the largest, the current source building, measures 15.4 × 11 × 6.3 m once assembled. The current source, voltage source and test cell buildings have no internal columns, so the equipment layout and maintenance aisles are not tied to a column grid.
A 7 m Test Cell With a Large Roll-Up Door
The 10 × 10 × 7 m test cell has a large roll-up door in its front wall, so test objects can be moved in and out in one piece.
Control Room Directly Beside the Test Cell
The control room stands against the test cell, with a 3 × 1.5 m double-glazed observation window in the facing wall and drainage and waterproofing along that side. Inside, the lighting runs on separate normal and emergency circuits, and a primary and a secondary earthing grid run under the floor.
Delivery Outcome
The five E-Houses were delivered in October 2026, joined and set in place on site, with the HVAC and auxiliary power distribution fitted out. On-site commissioning is complete, and the test system is awaiting entry into service.
Project Value
Each test circuit has its own building sized to its equipment, the large buildings are clear-span, and all five were assembled on site from factory-built sections, the largest to 15.4 × 11 × 6.3 m. For equipment makers, utilities and research institutes planning a high-power test lab or testing centre, the project is a working reference for the prefabricated buildings, with structure, HVAC, auxiliary power distribution and site assembly from one manufacturer.
Project Facts
| Current source | 15.4 × 11 × 6.3 m (L × W × H) |
|---|---|
| Voltage source | 15 × 13 × 4.5 m (L × W × H) |
| Power supply | 11 × 4 × 3.2 m (L × W × H) |
| Control room | 10 × 5 × 3 m (L × W × H) |
| Test cell | 10 × 10 × 7 m (L × W × H) |
| Delivery | October 2026 |
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Related Application Solutions
Prefabricated E-House Project Delivery Solution
ETENZ delivers configurable prefabricated E-House projects for electrical equipment integration, covering enclosure manufacturing, layout, wiring paths, factory checks, interface coordination, and OEM/ODM cooperation.
Related Products
ETENZ products related to the manufacturing, integration, or delivery scope of this project
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