# Pad-mounted Transformers & ZGS11 Combined Substations from China

Explore the documented ZGS11 pad-mounted combined-substation reference: 10/0.4 kV, 50–1,250 kVA, with ring-main or terminal arrangements and project-defined interfaces.

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Explore the documented ZGS11 pad-mounted combined-substation reference: 10/0.4 kV, 50–1,250 kVA, with ring-main or terminal arrangements and project-defined interfaces.

## Documented configuration

The ZGS11 catalogue reference integrates the transformer, load switch, fuses and off-circuit tap changer. Select the ring-main or terminal arrangement from the single-line diagram. This reference does not establish the complete ratings of every customer-specific design.

- **Series**: ZGS11
- **Voltage ratio**: 10 / 0.4 kV
- **Reference capacity**: 50–1,250 kVA
- **Network arrangement**: Ring-main or terminal
- **Integrated equipment**: Transformer, load switch and fuses
- **Tap changer**: Off-circuit tap changer

## Define the installation before ordering

- State rated capacity, primary and secondary voltage, frequency, vector group, impedance and tapping requirements.
- Provide the ring-main or terminal single-line diagram, earthing method, switching duty and protection coordination.
- Confirm fuse selection, load-switch interfaces, terminal arrangement, metering and access requirements.
- Review ambient conditions, enclosure requirements, installation space, cable entry, lifting and transport limits.
- Identify the destination specification, required tests and document schedule. Off-circuit tapping requires the transformer to be de-energised under the applicable operating procedure.
## Destination standards and approval

A catalogue rating is not proof of IEEE/ANSI conformity, CSA certification or utility approval. For a North American or other destination enquiry, provide the exact utility specification, applicable standards and required evidence. The equipment design and document package must be matched to that project.

## Technical selection

### What ratings are documented for ZGS11 on this page?

The listed ZGS11 reference is 10 / 0.4 kV and 50–1,250 kVA. Other voltage ratios, capacities or configurations require project-specific technical confirmation.

### Do these catalogue ratings automatically establish IEEE/ANSI conformity, CSA certification or destination utility approval?

No. Catalogue ratings alone do not establish IEEE/ANSI conformity, CSA certification or utility approval. Match the selected design, applicable tests and any required approvals to the destination specification.

Final ratings, configuration, performance and supply scope are defined in the project technical agreement.

[Prepare a transformer RFQ](https://kestvan.com/distribution-transformer-rfq)

[Compact substations](https://kestvan.com/products/compact-substations)

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## Technical guides and project preparation

- [Compact substations](https://kestvan.com/products/compact-substations)
- [Transformer RFQ guide](https://kestvan.com/distribution-transformer-rfq)
- [Voltages and standards](https://kestvan.com/voltage-and-standards)
- [Frequently asked questions](https://kestvan.com/faq)