- ISO 9001 · CE · IEC 60076
- SGS / BV Inspection
- Shipping to 15+ Countries

Transformer Series
Pre-Fabricated Containerised Substations


Transformer Series
Pre-Fabricated Containerised Substations
Containerised substations from 500 kVA to 63 MVA. The complete electrical room is built and commissioned inside a shipping container, then delivered as one unit — the fastest route to energising a remote or fast-track site.
- Free on-site acceptance, commissioning and training
- One-year warranty from the date of delivery
- Full-wave impulse tested before it ships
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Everything that would normally be built into a substation building — transformer, switchgear, protection, auxiliary supply, lighting, ventilation and cable management — is installed and tested inside a container at the factory.
Capacity 500 kVA – 63 MVA. The unit ships as standard freight, arrives ready to connect, and can be relocated later if the site plan changes.
- Capacity 500 kVA – 63 MVA
- Complete electrical room built and tested inside a shipping container
- Ships as standard freight, arrives ready to connect
- Relocatable — suits phased developments and temporary supply
- Ventilation, lighting, fire detection and auxiliary supply integrated
- Suitable for remote sites and fast-track project schedules
Mining and remote industrial sites, solar and wind farms, temporary and phased power supply, and fast-track infrastructure projects.
Technical Specifications
| No. | Item | Unit | High Voltage Unit | Transformer Unit | Low Voltage Unit |
|---|---|---|---|---|---|
| 1 | Rated Voltage | kV | 6, 10, 35 | 6, 10, 35 | 0.22, 0.38, 0.66 |
| 2 | Max. Operating Voltage | kV | 7.2, 12, 40.5 | - | - |
| 3 | Rated Frequency | Hz | 50 | ||
| 4 | Rated Capacity | kVA | - | 30~2000 | - |
| 5 | Rated Current | A | 400, 630, 1250 | - | 50~4000 |
| 6 | 1 min Power Frequency Withstand Voltage | kV | 42 (Phase-to-ground and phase-to-phase), 48 (Isolation gap) | - | 2.5 |
| 7 | (10kV) Lightning Impulse Withstand Voltage | kV | 75 (Phase-to-ground and phase-to-phase), 85 (Isolation gap) | - | - |
| 8 | (10kV) Rated Short-circuit Breaking Current | kA | 31.5 | - | - |
| 9 | Tapping Range | % | - | ±2×2.5%, ±5% | - |
| 10 | Vector Group | - | - | Yyn0, Dyn11 | - |
| 11 | Impedance Voltage | % | - | 4, 4.5, 6, 8 | - |
| 12 | Protection Grade (Standard Product) | - | IP33 | IP23 | IP33 |
| 13 | Sound Power Level | dB(A) | - | ≤ 50 | - |
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Zhongwei Willis (Shanghai) Electric Technology Co., Ltd. is a Shanghai-based supplier of power transmission and distribution equipment — transformers, substations and switchgear for clients across Africa, the Middle East, Southeast Asia and Central Asia, from 10 kV to 500 kV.
- ISO 9001
- CE
- IEC 60076
- SGS / BV
Products
Contact
- Room 21, Block D, 6/F, No. 1000 Zhenchen Road, Baoshan District, Shanghai, China
- +86 131 5355 3230
- WhatsApp +86 176 0546 5723
- 3373867314@qq.com
© 2025 Zhongwei Willis (Shanghai) Electric Technology Co., Ltd. All rights reserved.
Supplied to IEC 60076 · ANSI/IEEE · CE · ISO 9001


