Distribution substations are the critical nodes where energy is apportioned regionally and the operational safety of the network is maintained. Our distribution substation service covers the design and physical construction of centers where energy is distributed safely and manageably — from MV distribution facilities and circuit breaker-metering cabins to LV distribution panels. We deliver both new installations and renewal of existing substations for organized industrial zones, large facilities, and infrastructure projects.
Miratek acts as the single point of contact on these projects from design to acceptance. The engineering process starts with load distribution and selectivity analysis and is completed with cubicle and panel configuration, site installation, protection coordination, and supervised commissioning. Panel manufacturing uses type-tested systems compliant with the IEC 61439 series.
Future observability and expandability of the substation are planned at the design stage; needs such as spare feeders and remote monitoring infrastructure are built into the project from the outset.
Distribution Substation Technical Summary
| Voltage level | MV 1-35 kV distribution, LV 0.4 kV distribution |
| Substation types | MV distribution substation, circuit breaker-metering cabin, LV distribution substation |
| Application area | OIZ infrastructure, industrial facilities, campuses, infrastructure projects |
| Equipment types | MV cubicles, LV distribution panels, protection relays, metering systems |
| Compliance | IEC 61439-compliant panel systems |
| Delivery model | Turnkey; design, installation, and acceptance included |
How We Work
Needs Analysis and Site Survey
The loads to be fed, the feeder count, and future expansion needs are assessed on site.
Design and Engineering
The single-line diagram, cubicle and panel configuration, and selectivity coordination are engineered.
Manufacturing and Procurement
MV cubicles and LV panels are sourced from type-tested manufacturers in line with the specification.
Site Installation
The substation structure is prepared; cubicle and panel installation together with busbar and cable connections are completed.
Testing and Commissioning
The substation is energized after protection relay tests, grounding measurements, and functional checks.
Acceptance and Documentation
Acceptance procedures are completed; as-built drawings and test reports are handed over.
Scope of Work
- Construction of MV distribution substations and circuit breaker-metering cabins
- Installation of LV main and sub-distribution panels
- Feeder allocation, busbar systems, and cable connections
- Protection relay installation, setting, and selectivity coordination
- Preparation of metering and meter connection infrastructure
- Grounding installation and measurements
- Renewal and capacity upgrades of existing distribution substations
Frequently Asked Questions
What is the difference between a distribution substation and a transformer substation?
A transformer substation converts the voltage level, whereas a distribution substation apportions energy at the same voltage level across multiple feeders and enables the network to be controlled. In many projects, the two functions are designed together within the same structure.
Our existing distribution substation cannot handle the new loads — do we need a complete renewal?
Not always. During the site inspection, the capacities of the existing cubicles and panels are assessed; in most cases, capacity can be increased by adding feeders, reinforcing busbars, or partially renewing panels. A complete renewal is recommended only where it is technically unavoidable.
Can remote monitoring be added to a distribution substation?
Yes — remote monitoring and alarm infrastructure can be installed both in new builds and in existing substations. Metering and communication hardware is incorporated into the project so that energy consumption and fault conditions can be monitored centrally.
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