ELEVGRID / UTILITY & SUBSTATIONS

Utility &
Substation
Solutions

Connect the system requirements to a clearly defined equipment scope.

Prepare transformer, compact-substation and distribution-equipment enquiries for new substations, extensions and distribution projects. Start with the network conditions, installation constraints and interfaces that the proposed equipment must satisfy.

Discuss your project

SYSTEM INTERFACE MAPDefine each connection.

Substation interfaces CONCEPT ILLUSTRATION

Illustrative context only — not a project reference or an approved engineering drawing.

Review the project interface checklist

01 / NETWORKUtility connectionSystem voltage · fault level · connection requirements
02 / TRANSFORMATIONTransformer / substation packageRatings · configuration · supply boundary
03 / DISTRIBUTIONSwitchgear & outgoing feedersProtection · terminals · downstream interface

Conceptual interface map only. It is not a single-line diagram, approved design or confirmed supply package.

02 / PROJECT REQUIREMENTS

Utility/Substation Project Conditions

Describe what the project needs to connect, replace or extend before selecting equipment.

New substations

State the project stage, utility connection requirements, incoming supply arrangement and planned outgoing feeders. Identify who owns system design and approval.

Extensions to existing stations

Provide the existing single-line diagram, equipment nameplates and interface drawings. Identify shutdown constraints and any proposed parallel operation for engineering review.

Distribution projects

Describe the served loads, installation arrangement, planned growth and access constraints. Confirm whether the enquiry concerns individual equipment or an integrated package.

03 / PROJECT REQUIREMENTS

Voltage, Capacity and System Inputs

Use project values with units and document revisions. Mark unavailable data as “to be confirmed”; do not replace it with assumed ratings.

Network & voltage: Nominal system voltage and required equipment rated voltages; primary and secondary voltages; frequency and phase; required insulation levels and utility specification.
Capacity & operating duty: Required kVA or MVA with units, load profile, expected demand and growth assumptions. Identify redundancy or parallel-operation requirements; capacity alone does not establish suitability.
System & protection: Available fault-level data and duration, earthing arrangement, protection philosophy and relevant system studies. State transformer impedance, vector group and tapping requirements where specified.
Site & installation: Indoor or outdoor installation, ambient temperature, altitude, space limits, cable access and transport route. Describe environmental conditions requiring technical review.
Specification baseline: Single-line diagram, equipment schedule or BOQ, project specifications and their revisions. Identify applicable standards, editions, utility review requirements and unresolved inputs.

04 / PROJECT REQUIREMENTS

Supply Scope to Be Confirmed

The categories below describe possible enquiry scope. They are not a promise that every equipment type or configuration is available.

01Network connection

02Equipment scope

03Outgoing interfaces

Reserved for this solution’s equipment supply context. No project evidence is implied.

Transformers

Confirm transformer type, ratings, winding configuration, cooling, tapping, terminations and accessories against the project duty.

Compact / prefabricated substations

Identify the intended enclosure, transformer and switchgear arrangement, access, ventilation and cable interfaces. Package availability and assembly responsibility require confirmation.

High- & low-voltage distribution equipment

Specify the actual system voltage, switchgear duties, busbar requirements, protection and metering, control supply and cable entry. Category names alone are not equipment specifications.

Associated components

Provide drawings, quantities, materials where specified, terminal details and interface dimensions for bushings, tanks, radiators or other requested components. Availability and compatibility require review.

05 / PROJECT REQUIREMENTS

Equipment and Interface Coordination

One equipment selection can affect several connections. Keep an interface register alongside the equipment schedule.

Reserved for this solution’s system interface visual. No project evidence is implied.

Electrical connection: Match rated voltages, required insulation levels, current duties and agreed transformer characteristics to upstream and downstream requirements.
Mechanical connection: Confirm general arrangement, foundation loads, overall dimensions, terminal positions, cable or busduct entry, clearances and access for maintenance.
Protection & control: Define CT/VT requirements where applicable, trip and alarm contacts, auxiliary supplies, interlocks and communication interfaces. Protocol and equipment compatibility must be reviewed.
Responsibility & revisions: Give each interface an owner, drawing reference, revision and confirmation status. A proposal remains open until the responsible project parties resolve it.

06 / PROJECT REQUIREMENTS

Technical Clarification and Deliverables

Use these review checkpoints to define what is required and who must confirm it.

01
Requirement review
Identify equipment, specification revisions, missing data and utility-specific conditions.
02
Technical clarification
Record proposed configurations, deviations, interface responsibilities and outstanding decisions.
03
Document agreement
Agree the required datasheets, drawings, review stages, test documentation and acceptance criteria.
04
Release & handover requirements
Define approval responsibilities, release conditions, final document index and packing or delivery information in the agreed contract scope.

Document availability, testing scope, witness arrangements, languages and submission dates require agreement for the specific equipment. No test capability, certificate, approval or delivery date is established by this workflow.

07 / PROJECT REQUIREMENTS

Related Published Products

A published product is a reference for discovery, not an approved selection for your project.

EQUIPMENT ANATOMYILLUSTRATIVE / NOT TO SCALE

Concept illustration. Confirm the actual configuration and approved drawing for your project.

PUBLISHED PRODUCT / TRANSFORMER

35kV Oil-Immersed Power Transformer

The published product page identifies utility substations among its application contexts. Review the product information as a starting point; suitability, configuration and final guaranteed values require project confirmation.

Review published product

08 / PROJECT REQUIREMENTS

Project FAQ

Can I enquire before all ratings are final?

Yes. Share the available single-line diagram, BOQ or specification, identify the project stage and mark outstanding values. Missing information can be listed for clarification; an initial enquiry does not establish an approved equipment selection.

Does this solution include a complete turnkey substation?

Do not assume turnkey or EPC scope. Identify the required equipment and services separately. System studies, civil works, installation, commissioning and utility approvals need explicit responsibility and scope agreement.

Can a new transformer operate in parallel with an existing unit?

Parallel operation requires project engineering review of both units and the system. Provide existing nameplate data, ratings, vector group, impedance, tap information and the operating arrangement. Do not infer compatibility from matching capacity alone.

Are utility approvals or certificates included?

Identify the specific utility, approval process and evidence required. Availability, applicability and acceptance must be confirmed for the offered equipment. A product listing or standards reference is not utility approval.

Can transformer and switchgear requirements be submitted together?

Yes. Provide the equipment schedule and interfaces for a coordinated scope review. Confirm availability, package boundaries, protection and control responsibilities, and the party responsible for integration before commitment.

What if no suitable product is listed?

Submit your requirements through the existing RFQ. The absence of a listing does not establish availability or unavailability; the requested scope must be reviewed before an offer can be confirmed.

09 / PROJECT REQUIREMENTS

RFQ Input Checklist

Project context: New build or extension; project stage; destination; utility requirements and responsible design party.
Electrical requirements: Capacity and units; primary/secondary voltage; frequency; phase; specified vector group, impedance, tapping and insulation requirements.
System & site: SLD and fault-level information where available; protection and earthing requirements; installation, ambient conditions, altitude and access.
Supply & interfaces: Equipment list and quantities; package boundaries; interface drawings; existing-equipment data when extending a station.
Documents & schedule: Specification revisions; required deliverables and review stages; target delivery date and destination port where known. Mark open items explicitly.

Use the existing technical fields where they fit. Put project context, interface details and unresolved questions in Additional Technical Requirements or the supporting specification. Submit the information you have; the checklist is a preparation guide.

Recommended next step

Carry the project brief forward.

Standards & Compliance ↗Testing & Factory Acceptance ↗

Review equipment requirements ↗

10 / PROJECT REQUIREMENTS

Bring the project conditions together.

Share your equipment schedule, system inputs and open questions to begin technical and commercial review.

Reserved for this solution’s project enquiry visual. No project evidence is implied.

Submit project requirements

Final supply scope, technical configuration, documents and delivery terms are subject to written confirmation.