LT Panels & Distribution Switchboards
TPE manufactures custom LT panels and distribution switchboards for industrial power distribution. The source arrangement, feeder schedule and approved electrical ratings define the assembly, with supply from Kolkata across India.
Product-type reference. The supplied make and configuration are confirmed in your quotation.
LT panel manufacturing in Kolkata
Tirupati Power Enterprises manufactures LT panels and distribution switchboards for industrial and project requirements from Kolkata. Send your single-line diagram (SLD), load or feeder schedule and installation details to start a quotation. The proposal should identify the incomer, outgoing circuits, busbar system, protective devices, enclosure and agreed supply scope.
A low-tension panel distributes and controls electrical power within the installation’s low-voltage system. This page covers the custom distribution assembly; individual breakers, motor starters and capacitor banks have their own selection requirements. For procurement teams in West Bengal, Odisha, Assam and elsewhere in India, include the delivery postcode and the project drawing revision so that freight, dispatch scope and the technical offer refer to the same requirement.
Choose the LT panel arrangement for your load
The starting point is the source and feeder arrangement, rather than a cabinet size or an ampere rating alone. A main LT board may distribute incoming power to several downstream panels; a dedicated power control centre or motor control centre has a more specific duty. Identify each source, normal operating state and outgoing circuit before comparing proposals.
Requirement | Define in the enquiry | Why it changes the offer |
|---|---|---|
Single incomer distribution | Source rating, incomer device and outgoing feeder schedule | Sets the main distribution and protection arrangement |
Multiple incomers or bus sections | Source combinations, bus coupler and permitted operating states | Defines interlocks, control logic and sectionalisation |
Main board with motor feeders | Motor list, starting method and upstream/downstream scope | Separates distribution duty from motor-control requirements |
Expansion or replacement | Existing SLD, interface dimensions and shutdown constraints | Identifies connections, access and changes needing review |
LT distribution panel specification checklist
Use the table as an enquiry schedule, not as a list of universal TPE ratings. Each rating and construction detail must be confirmed in the project offer. A 415 V supply, for example, does not by itself define the assembly’s fault withstand, insulation coordination or usable continuous current.
Specification | Information to provide | Confirmation to request |
|---|---|---|
Supply and sources | Voltage, frequency, phases, transformer/DG details and earthing system | Approved source arrangement and rated system parameters |
Current and busbars | Demand, diversity, future capacity, busbar material and neutral duty | Assembly current rating and thermal design basis |
Short-circuit duty | Prospective fault current and required duration at the panel location | Withstand/protection coordination for the proposed assembly |
Incomers and outgoings | Device type, poles, ratings, trip functions, breaking capacity and make | Line-by-line device schedule and settings responsibility |
Enclosure and access | Indoor/outdoor location, IP requirement, ambient, front/rear access | Dimensions, ventilation, clearances and installation arrangement |
Cable interfaces | Top/bottom entry, cable sizes, quantity and gland-plate requirements | Termination space, bending access and supplied entry accessories |
Metering and controls | Measurements, CT requirements, alarms, communication and interlocks | Control supply, drawings and external interface boundaries |
Verification and documents | Applicable assembly standard, consultant specification and inspection needs | Design/routine verification evidence and agreed deliverables |
Construction, protection and verification to agree before order
Ask for the general arrangement, SLD, bill of materials and control drawings applicable to the quoted revision. Confirm the enclosure arrangement, internal separation where specified, busbar supports, protective circuit and access for inspection or maintenance. More sheet thickness or a higher breaker rating is not a substitute for an agreed assembly design.
Where the project specifies IEC 61439 or an applicable Indian adoption, request evidence for the actual assembly configuration. Design verification and routine verification address different responsibilities; naming a standard on a quotation does not establish that all required evidence is available. Specify inspection or witness requirements before manufacturing, including the records needed for acceptance.
For transformer and generator sources, define whether parallel operation is permitted and which interlocks prevent prohibited operating states. Identify who supplies protection studies, settings, external wiring and commissioning. Changes to a breaker make or series should be reviewed against the approved design rather than treated as automatically interchangeable.
What determines an LT panel price?
LT panel pricing depends on the engineered scope: incomer and feeder count, selected switchgear, busbar system, fault duty, enclosure construction, metering, control functions and documentation. Two panels with the same main current rating can have materially different scope and cost.
For a useful commercial comparison, ask each bidder to quote against the same SLD revision and device schedule. Separate panel manufacture and routine checks from freight, unloading, installation, civil works, cabling, site testing and commissioning. Have taxes, payment terms, quotation validity and dispatch timing stated explicitly. TPE confirms configuration, pricing and availability through the project quotation; this page does not publish a standard panel price.
Send an LT panel RFQ that can be quoted line by line
An SLD and a feeder list provide a better starting point than “one LT panel”. If drawings are incomplete, send the available load schedule and clearly identify which items still require engineering review. Attach documents to the enquiry below or share the requirement with our team.
- Project name, delivery city/postcode, quantity and required-on-site date.
- Latest SLD and feeder schedule, with source and bus-coupler operating logic.
- System voltage/frequency, incomer current, fault level and duration.
- Approved switchgear makes, trip requirements, metering and control interfaces.
- Enclosure/IP requirement, ambient conditions, access and top/bottom cable entry.
- GA dimensions or space constraints, verification documents and inspection requirements.
- Clear inclusions for transport, installation, testing and commissioning.
Checks before you approve the order
Main distribution or PCC?
Use the LT board requirement to define the overall distribution arrangement. Use the PCC buying page when the project specifically calls for a power control centre with its own feeder and protection schedule.
Motor-control scope
Route motor starting, overload coordination and operating sequences to the MCC requirement rather than hiding them in a general LT feeder list.
Power-factor correction interface
An APFC bank needs its own measured reactive-power and switching assessment. State whether it is a separate assembly and define its connection to the LT system.
Buying guidance and technical references
Related products and buying guidance
Electrical panel manufacturing capability
PCC manufacturing and quotation requirements
Motor control centres and motor schedules
APFC panel selection and quotation
Prepare an LT panel specification
Sources and further reading
Schneider Electric Electrical Installation Guide: distribution switchboards and verification
Questions about LT Panels & Distribution Switchboards
Do you manufacture LT panels in Kolkata?
Yes. Tirupati Power Enterprises manufactures custom electrical panels in Kolkata. Send the SLD, feeder schedule, ratings, fault duty and site details so that the technical and commercial scope can be confirmed.
Can you quote an LT panel without a final SLD?
Available load and source details can support an initial discussion. Mark missing design inputs clearly; final device selection, drawings and manufacturing scope need an agreed design basis.
What is the difference between an LT panel and a PCC?
LT panel is a broad term for a low-voltage assembly. A PCC is a power control centre with a particular distribution and control duty. Use the project SLD and feeder schedule to establish the exact scope rather than relying on the name alone.
Which ratings are needed for an LT panel quotation?
Provide the supply voltage and frequency, incomer and feeder currents, prospective fault level and duration, protection requirements, enclosure conditions and cable-entry arrangement. Confirm assembly ratings in the offer.
Is installation included in the LT panel price?
It is included only where the quotation explicitly says so. Agree freight, unloading, installation, cable work, site testing and commissioning separately from panel manufacture.
Can you supply LT panels to Odisha and Assam?
TPE handles requirements across India from Kolkata. Share the delivery postcode, project schedule and transport or site constraints so that dispatch and any site-service scope can be confirmed in the quotation.
Does an IEC 61439 reference mean the panel is certified?
No. Ask for the applicable design and routine verification evidence for the proposed assembly. A standard reference by itself does not prove third-party certification or verification of a particular configuration.
Need this for your application?
Send the specification, quantity and delivery PIN code. Our Kolkata team quotes supply across India, including eastern India, with availability and freight confirmed for your order.