Frequently asked questions.

Prepare a clearer inquiry and identify the product documents needed for selection, cabinet integration and operation.

Product identification and requirements.

4 questions

Which product families does Liqiang manufacture?

The range covers indoor vacuum circuit breakers, outdoor vacuum circuit breakers, load break switches, and disconnectors and earthing switches. Review the product range to identify the family relevant to your installation.

What information should I send for product selection?

Include the required rated voltage, current and switching duty, installation environment, proposed model, quantity and delivery destination. Send the cabinet or mounting drawing and control diagram where dimensions, operating supply or interlocks affect the selection.

Can a photograph confirm a compatible replacement?

A photograph helps identify the arrangement, but dimensions and control interfaces also need review. Send the nameplate designation, rated requirements, mounting drawing, operating supply and wiring information for the existing equipment.

What should I include when requesting a quotation?

State the exact model or product family, required configuration, electrical duty, quantity, destination and requested delivery date. Include the documentation and packing requirements that form part of your specification.

Mounting, operation and control.

5 questions

How do I specify an indoor breaker arrangement?

Identify fixed, withdrawable or side-mounted construction and the model under consideration. Review the cabinet dimensions, phase and terminal spacing, mechanism, insulation arrangement, operating supply, auxiliary contacts and required interlocks. See the switching-device selection guide.

Which families include a three-position arrangement?

Our product range includes VQL-12, VQL-24 and VQLA-12 three-position designs. Confirm the installation arrangement, operating supply, mechanical interfaces and interlocks against the specific model documents rather than applying another family’s configuration.

What should be reviewed for an outdoor feeder breaker?

Discuss the feeder duty, site conditions, manual or motor operation, operating supply, sensing and controller requirements. The mounting arrangement, integral disconnector, PT supply and insulation-cover requirements are configuration topics to review for the selected product.

What information is needed for a load break switch?

Confirm load-switch or fuse-combination duty, the exact designation, installation orientation, operating direction and operating method. Review the control supply, auxiliary contacts, earthing arrangement and required interlocks with the cabinet drawing.

How should isolation and earthing interfaces be specified?

State the isolation or earthing function, mounting space, phase spacing, operating direction, shaft position and auxiliary-contact requirements. Coordinate the switch interfaces and interlocks with the panel design. Review the disconnector and earthing-switch range.

Drawings, manuals and test reports.

5 questions

Where can I find product manuals?

The Downloads page lists available product documents. Confirm that the document edition and arrangement match the equipment being reviewed.

Which manual should I use for my equipment?

Use the manual for the exact model, operating arrangement and document edition. If you are unsure which document applies, send the model designation and the information you need.

How do I request a dimension drawing or wiring diagram?

Send the model, construction arrangement and required control supply. Include your installation drawing and control requirements so the matching dimension and wiring information can be discussed.

Which company certificates and product documents can I review?

The manufacturing and quality page brings together Liqiang’s management-system certificates, production information and inspection resources. The product pages provide model-specific manuals, drawings and available test reports. Include the documents required for supplier qualification or technical approval when sending your enquiry.

What information helps with installation or maintenance support?

Send the product designation, a clear nameplate photograph, the installation and control drawings, and a description of the question. Use the operating and maintenance documents relevant to the exact model and arrangement.

Product engineering series

About Liqiang

Manufacturing and technical support.

Technical selection guide