LT stands for low tension, and an LT panel is usually the first major board after your transformer or utility supply. Everything downstream depends on it. If it is undersized or badly protected, the entire electrical system suffers. That is why we treat LT panels with a lot of care, even when the design looks straightforward on paper.
What makes up an LT panel
A typical LT panel has an incoming breaker, a busbar chamber and a set of outgoing feeders. Depending on the current, the incomer might be an MCCB or an air circuit breaker. We add ammeters, voltmeters and multifunction meters so you can actually see what your plant is drawing, which helps in spotting overloads early.
Busbar sizing is where we spend the most time. We calculate current-carrying capacity, temperature rise and the fault level the busbar must withstand, then choose copper or aluminium accordingly. Proper supports and insulators are used so the busbar does not move under short-circuit forces. These things rarely get noticed until the day they matter.
Incomer options
MCCB or air circuit breaker depending on the current rating.
Sized busbars
Calculated for current, temperature rise and short-circuit strength.
Outgoing feeders
Breakers or fuse switches arranged for each load or sub-panel.
Metering
Ammeters, voltmeters and multifunction meters as required.
Spare ways
Extra outgoing space for future loads.
Generator and capacitor ready
Provision for changeover and power factor correction.
Busbars, spare capacity and planning ahead
Space for future feeders is something we always suggest. Plants grow, new machines arrive, and a panel with no spare room forces expensive modifications. Leaving a few spare outgoing slots costs little now and saves a lot later. We can also plan for capacitor or generator connections if you expect them.
Our LT panels are built in Greater Noida and delivered across India. Share your connected load and incoming details, and we will propose a suitable configuration. If you have an existing LT panel that needs an upgrade, we can review it and advise what should change.
Where it is commonly used
Before you place an order
A common mistake is to design an LT panel exactly to today's load. Then a new machine arrives, and there is no free feeder or busbar capacity. Adding a few spare ways and a slightly higher busbar rating costs little at the start and saves a costly modification later. We usually discuss this openly during design.
Cable entry is another practical point. Top or bottom entry, and how many cables per feeder, affects the enclosure size and the gland plate arrangement. Telling us about your cable sizes early lets us leave enough room, and your electrician will thank you when it is time to terminate.