Overview
LT panels and control panels serve different functions within an electrical system. An LT distribution panel manages defined low-voltage circuits and protection interfaces; a control panel implements the control requirements specified for the equipment or process. The required functions and supply boundaries should be stated rather than inferred from the panel name.
Typical applications and industries
The following are general duty contexts to discuss, not a list of OSTL customer installations or a guarantee of suitability for every site.
- Industrial distribution and process installations with an engineered load and protection schedule.
- Commercial buildings, hospitals and campuses with planned distribution or equipment-control needs.
- Utility or infrastructure auxiliary systems where the specification calls for panels.
- Transformer and compact-substation projects needing coordinated low-voltage or control interfaces.
Define the operating duty
Share the single-line or control diagram, load/circuit list, system voltage, current and fault-duty requirements, operating sequence and installation environment. For a control panel, define the required logic and interfaces. Do not assume a particular controller, communication protocol or automation function is included.
General construction considerations
These are design topics, not fixed features promised for every supplied unit. Confirm the construction in the project-specific offer.
- Incoming/outgoing circuit arrangement, switching and protection selected for the agreed duty.
- Busbars, wiring and earthing arrangement specified for the design and installation conditions.
- Enclosure, access, cable entry, ventilation and internal arrangement discussed with the project team.
- Metering, indication, interlocking and control devices provided only within the agreed functional scope.
Ratings and scope
Ratings as per project requirement. Confirm the ratings for the proposed assembly and its components. Do not apply a transformer MVA/kV limit to switchgear, panels or a complete substation assembly. No panel current, fault rating, enclosure class or substation voltage range is published here.
BIS, ISO and project-specific documentation
OSTL has held BIS licences in all five major transformer categories since 2020. This is a company credential, not a blanket BIS certification claim for this product line. Ask for the exact licence scope and the standards and documentation applicable to the proposed equipment.
OSTL is ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 certified; copies available on request. Management-system certification does not establish a particular product rating, enclosure class, efficiency level or test approval. Agree the technical requirements and supporting records in the written offer.
Related equipment and project context
Send a clearer quotation brief
Contact the Kolkata corporate office with the equipment category, duty, rating required, supply/interface voltages, quantity, site conditions and requested dispatch destination. Unknown items can be marked for technical discussion; do not assume a standard configuration.
Landline: 033 4061 3200 · ostltd@hotmail.com. The quotation checklist can help organise the brief.
Frequently asked questions
Does OSTL make LT panels and control panels?
Yes. Both are confirmed categories. The function, arrangement and equipment included are defined against the project specification.
What current and fault ratings are available?
Ratings are as per project requirement. Panel-specific current, voltage and short-circuit ratings need confirmation; transformer MVA and kV ceilings are not panel ratings.
Does every panel include automation or communication?
No. Provide the required control logic, interfaces and any communication needs. No PLC, protocol or automation package is implied by this page.
Is a particular panel standard or enclosure class certified?
No blanket product certification, standard conformity, enclosure class or design-verification claim is made here. Agree the applicable requirements and documentary evidence for the proposed panel.