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CompactSubstation SectionalView

MajorCompartments/Components · RingMainUnit · 3xSingleCoreXLPECable · DistributionTransformer · InsulatedCopperBusbar · LVDistributionBoard

Compact Substation 12kV - 24kV

| Compact & Robust Enclosure | | Safe & Reliable Operation | | Weather proof & Vermin proof | | Customised Solutions |

Responding To Your Needs

The compact substation comprises of the following components : · · · · · Enclosure SF6 Ring Main Unit Hermetically sealed Distribution Transformer L.V. Distribution Board Inter-connection for internal equipments

Ring Main Unit

The Medium Voltage Ring Main Unit is a type-tested, metal enclosed, SF6 insulated indoor switchgear. It is equipped with 3-position switch-disconnector for line feeding and switch-fuse combination for transformer protection. It meets most of the demand encountered in network operation by virtue of the following features : · · · · · · · · · High degree of personnel safety High degree of reliability Maintenance-free Operation not affected by environmental effect Compact & small in size Conforms to IEC standards IEC Publication NO.60298, 60694, 60265-1, 60420 & 60129 Equipped with Earth fault indicator (optional) Equipped with shunt release & auxiliary switch for remote operation and indication (optional) Motorisation (optional) LV Distribution Board

LV Distribution Board


Compact Substation is normally used for power distribution in light industrial area, commercial and residential areas etc

The LV panel is equipped with copper busbars, incoming link units, outgoing fuse units, and instrument panel for metering, indication and site work's auxiliary supply.


The construction of Enclosure is prefabricated mild steel housing. The metal base is made of extruded channel welded frame to ensure rigidity and ease of transportation / installation. Ventilation apertures with air filter are provided for natural ventilation. Double doors are equipped with key lock and rubber seals. The degree of protection provided for the enclosure meets the IP54 standard.

Ring Main Unit Enclosure

Distribution Transformer

Distribution Transformer

The Distribution Transformer is a hermetically sealed type and is duly-connected with the LV Distribution Board and Ring Main unit. The transformers medium voltage terminals are connected directly to the Ring Main Unit and the low voltage terminals directly to the LV Distribution Board by means of cables/busbars.


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