ZGS11 Series Combination Transformer (American Box Transformer)Detailed product description：

The ZGS11 series combination transformer (American box transformer) has less investment and occupies less land than traditional civil substations, and is flexible and convenient to use. It is widely used in urban network reconstruction, as well as distribution places such as high-rise buildings, residential communities, industrial parks, commercial centers, airports, schools, factories, and mining enterprises.
The product complies with the GB/T17467-1998 standard, and the parameters adopt the IEC1330-1995 standard. At the same time, some of the requirements refer to the mechanical industry standard JB/T10217 "Combination Transformer". The product has the characteristics of strong output capability, low noise, low loss, small size, compact structure, flexible and convenient installation, and safety and reliability.

The load switch of ZGS11 series combination transformer (American box transformer) adopts products produced by Cooper Company in the United States. The rated current of the terminal type combination transformer load switch is 300A, the thermal stability current is 12.5kA/2S, the dynamic stability current is 31.5kA, the short-circuit closing current is 31.5kA, the power frequency withstand voltage is 42kV, the impulse withstand voltage is 75kV, the load operation frequency is 100 times, and the mechanical operation frequency is ≥ 2000 times. The rated current of the ring network type transformer load switch is 600A, the thermal stability current is 16kA/2S, the dynamic stability current is 40kA, the short-circuit closing current is 40kA, the power frequency withstand voltage is 42kV, the impulse withstand voltage is 75kV, the load operation frequency is 100 times, and the mechanical operation frequency is ≥ 2000 times.
The plug-in fuse and backup protection fuse are products produced by Cooper Company in the United States, and their fuse specifications are selected according to standard requirements. For example, the 400kVA group transformer dual sensitive fuse uses B-O-N-40A, the 500kVA group transformer uses B-O-N-50A, the 630kVA group transformer uses B-O-N-65A, and the 800kVA group transformer uses B-O-N-80A.

The low-voltage part of the ZGS11 series combination transformer (American box transformer) is configured according to the user's primary scheme diagram. The main switch uses imported ABB OETL isolation switch, and the branch switch uses Beijing ABB S5N circuit breaker. The capacitor compensation is automatically compensated according to the capacity specified in the user's drawing, and the group switching uses CJ19 contactor.

The ZGS11 series combination transformer (American box transformer) uses a fully sealed S11 energy-saving transformer, which has a lower no-load loss than the SB10 type oil transformer. High voltage 10 ± 2 × 2.5% kV, low voltage 400V/230V.