Overview
CBMV transformer containers are built to specifications to connect to 1 to 4 BESS containers. It includes:
The main transformer - three-phase double winding 10kV~35kV Oil immersed type transformer with optional integrated oil pool/recovery system.
Switch cabinet with 4 LV Automatic circuit breakers + 1 MV Circuit breakers and Power Distribution system.
200kVA Auxiliary Transformer to provide auxiliary power to its controller and to the 4 BESS containers (each requiring a maximum of 44 kVA).
Integrated Smart Energy Meter, UPS, SPD.
We provide 2 variants: 3300kVA, 6600kVA for 2, 3 or 4 units of 20C1600K.
For systems installed starting January 2026, we have a new version with SF6 free switchgears. This is available for order starting August 2025..
Specifications
Overview
Model | CBMV3300K | CBMV6600K |
Rated power | 3300kVA | 6600kVA |
Transformer type | Oil-Immersed | Oil-Immersed |
LV/MV voltage | 0.69kV/10kV ~ 35kV | 0.69kV/10kV ~ 35kV |
Transformer vector | Dy11 – y11 | Dy11 – y11 |
Rate grid frequency | 50Hz/60Hz | 50Hz/60Hz |
Protection
AC input protection | ACB (1,600A/3P)×2 | ACB (1,600A/3P)×4 |
Transformer protection | Oil-temperature | Oil-temperature |
AC MV output protection | MV Vacuum circuit breaker | MV Vacuum circuit breaker |
General
Ingress protection rating | IP54 - C5M | IP54 - C5M |
Auxiliary power supply | Standard: 100kVA | Standard: 200kVA |
Operating temperature | -40~+60°C | -40~+60°C |
Relative humidity | 0~95% | 0~95% |
Max. altitude | 1,000m | 1,000m |
Cooling type | ONAN | ONAN |
Communication port | Ethernet Modbus | Ethernet Modbus |
Dimensions (W*D*H) | 6,058x2,438x2,591mm | 6,058x2,438x2,591mm |
Weight (kg) | ＜16T | ＜25T |
Standard compliance | IEC 62271-202, EN 50588-1, IEC 60076, IEC 62271-200, IEC 61439-1 | IEC 62271-202, EN 50588-1, IEC 60076, IEC 62271-200, IEC 61439-1 |