Power Equipment Blog

Buyer Guides

Practical Selection Guides for Power Distribution Buyers

These articles support real procurement questions: how to choose the right transformer, substation, switchgear, RMU, or LV cabinet before asking for quotation.

Jinxing dry-type transformer product photograph
Dry-Type Transformer Guides

Dry-Type Transformer Temperature Controller Supply Scope

Specify a dry-type transformer temperature package as an interface, not as the word “controller.” The order should identify sensor type and location, controller functions, auxiliary power, fan or cooling outputs, alarm and trip contacts, communication, panel location, wiring, tests and documents. Setpoints and operating responses must follow the approved transformer design and project protection philosophy.

Read guide
Jinxing dry-type transformer product photograph
Dry-Type Transformer Guides

Dry-Type Transformer Transport Split and Reassembly Scope

Decide before ordering whether a dry-type transformer will arrive fully assembled, in factory-defined sections, or with selected parts supplied loose. The decision must cover the shipping envelope, weight, lifting points, packing, storage, reconnection, torque or inspection records, site tests and who accepts the reassembled unit.

Read guide
Jinxing low-voltage switchgear product photograph
Low-Voltage Switchgear Guides

LV Switchgear Metering Schedule for Multi-Tenant Buildings

An LV switchgear metering specification should show every metering point on the single-line diagram and identify the associated feeder, CTs, meter, test links, communications, seals, terminals and responsible party. Separate utility billing meters from landlord energy monitoring and tenant sub-metering. Then state who supplies, installs, configures, tests and accepts each item.

Read guide
Jinxing low-voltage switchgear product photograph
Low-Voltage Switchgear Guides

LV Switchgear Spare Feeders: Installed Devices or Space?

Define an LV switchgear spare feeder as a purchased provision, not a blank line in the panel schedule. It may be a fully equipped unused feeder, a factory-prepared compartment and bus interface, or physical space reserved for a future section. Those choices leave different work for the future and different risks for the initial assembly.

Read guide
Jinxing oil-immersed transformer product photograph
Oil-Immersed Transformer Guides

Oil Transformer Terminal Options: Bushings or Cable Boxes?

Choose an oil-immersed transformer terminal arrangement from the approved connection method, insulation coordination, clearances, cable system, access, environmental exposure and installation responsibility. Exposed bushings can suit an approved open connection, while a cable box can create a defined enclosed termination space. Neither option is automatically safer, cheaper or compatible with every site.

Read guide
Jinxing ring main unit product photograph
Ring Main Unit Guides

RMU Cable Connector Compatibility Before Purchase

Verify an RMU cable connector against the actual cable, bushing interface, insulation level, screen and earthing method, dimensions, test access and installation procedure. A connector that matches a nominal voltage or conductor size may still fail the mechanical, electrical or space requirements of the offered RMU.

Read guide
Jinxing ring main unit product photograph
Ring Main Unit Guides

RMU Spare Ways: Fully Equipped Modules or Reserved Space?

Define an RMU spare way as a specific purchased provision. It may be a fully equipped unused functional unit, a factory-prepared interface for a later module, or space reserved for another assembly. Those options preserve different electrical functions and require different future work.

Read guide
Jinxing oil-immersed transformer product photograph
Distribution Transformer Guides

Transformer Quote Validity: Handling Changes Before Order

A transformer quotation stays usable only when its technical baseline, included accessories, documents, delivery assumptions and validity date are visible. When any of those inputs changes, ask for a marked revision and a clear list of price, design, test and schedule effects. Do not treat the original price as transferable to a different voltage, connection, enclosure, accessory set or delivery scope.

Read guide
Jinxing medium-voltage switchgear product photograph
Medium Voltage Switchgear Guides

Switchgear Labels and Mimic Diagram: Buyer Approval Guide

Request a panel-by-panel label schedule and front-elevation artwork tied to the approved single-line diagram. Agree equipment identifiers, feeder descriptions, language, symbols and drawing revisions before labels are manufactured. Review physical markings separately from control logic: an accurate diagram does not prove that interlocks or remote commands operate correctly. ![Jinxing medium-voltage switchgear product photograph](/assets/jinxing/products-web/mv-switchgear-main.jpg) Review the controlled approval points before requesting a project quotation.

Read guide
Jinxing dry-type transformer product photograph
Dry-Type Transformer Guides

Transformer Nameplate Approval Before Manufacturing Release

Approve a transformer nameplate drawing against the accepted equipment data, connection drawing and project identification schedule. Resolve conflicting values before releasing the affected manufacturing documents. Separate information that can be approved at design stage from unit-specific information completed later, and require a final reconciliation with the delivered transformer and its records. ![Jinxing dry-type transformer product photograph](/assets/jinxing/products-web/dry-type-main.jpg) Review the controlled approval points before requesting a project quotation.

Read guide