Discuss LT Panel & HT Panel
LT Panel
In industries and domestic’s applications, various electrical and electronics devices and distribution boards such panels use. Low Terminal panels receive power from a generator or transformer and distributor. It is also a kind of electrical distribution board. To provide luxury living for the human, in the continuity of the electrical supply for the load appliances like fans, motors, etc. LT Panel plays a critical role in industry and factory.
In this Low Terminal (LT) Panel, different types of switchgear equipment used. Some of them are Bus Coupler, Air Circuit Breaker (ACB), Miniature Circuit Breaker (MCB), Relays, Switches, and Fuses. To reduce the performance of this panel, the major failures like overvoltage, under-voltage, overload, and over currents will leads. By using MIL-STD-217F, Low Tension (LT) panel manufacturing process is mainly intended to bring out the process issues. And also failure modes using the reliability tool PFMEA concepts and also evaluate the reliability of this panel.
LT Panel
Simply LT Panel (Low Terminal) is a kind of distribution board. That receives power generator or transformer and distributes the same as like as to numerous electronic devices and distribution boards. These kinds of LT Panel (Low Terminal) mostly used in the industry and factory for both internal and external use. And also, therefore, they are quite heavy to withstand different climatic conditions. Most of the LT Panels (Low Terminal) are making and designed for work with low electricity consumption. It is also more cost-effective.
LT Panel Consists of
To control/switch the power required in different machines, sections, purpose, LT switchgear consists of the main incoming Circuit Breaker (MCCB/ACB). As per the capacity of the Transformer, Rated Bus-bars, Outgoing Circuit Breakers (ACB/MCCB/MCB). Are built-in necessary indications and measuring equipment for current, voltage, power. So that the panel operator can easily monitor and check the usage. To rescue any kind of accident, all the bus-bars/live parts well insulated.
HT Panel
HT Panel stands for High Terminal. It is also as like as LT Panel except that used for high tension cables. A lot of quality assembled HT Panel (High Terminal) make ready and designed on the basis of the rated voltage of 12 kV, 33 kV. The current rating of HT Panel- 400 A to 250 A. The range of breaking capacitors starts from 250 MVA to 1500 MVA.
HT Panel or Switchgear basically consists of VCB, LBS, and SF6 Circuit Breaker. And the switchgear is of optimized design for Bangladesh supply condition and ambient. Indoor plant 11/33 KV Vacuum Circuit Breaker basically used for the protection of the transformer.
HT Panel
VCB boards unequivocally designed after severe industry parameters and are appreciated for features like predominant quality and cost-adequacy. VCB Panels are likewise accessible from unique hardware makers (OEM) to consolidate establishments or for use infix, retrofit and redesign ventures.
Difference between HT Power Supply and LT Power Supply
This implies it will give a high voltage in (kV), DC voltage. That is valuable for plasma gleam cleaning, and to a little degree DC sputtering, if the kV is given up to 4 to5 Kilo volts.
1) HT power supply
Basically it is a stage up transformer. That is constructs the high KV, and afterward, a rectifier. That changes over the ventured up air conditioning voltage into DC voltage.
2) LT power supply
This is giving low voltage yet high current. Since for vanishing of any metal, you need high current (20 to 70 Amps). To liquefy the dissipation material kept on the vessel. So you need an LT power supply.
It basically comprises of a stage down transformer. That creates a low voltage and a high current at the auxiliary, and you dissipation anodes where you interface the tungsten fiber associated with this output.
Components of LT (Low Terminal) & HT (High Terminal) Panel
The approaching section has Incoming Bus-bars, Air Circuit Breaker (ACB). The Sub-approaching section comprises of Monitoring gadgets. Examples, LEDs, Meters and Protection gadgets like Relays, Rotary Switches, Miniature Circuit Breaker (MCB), and HRC Fuses. The feeder section has Feeder Bus-bars.
Bus-bars
The bus bars air-protected and made of high caliber and high conductivity, high-quality aluminum. The interconnection between bus bars and different parts will be high conductivity aluminum. The bus bars will have uniform cross-segment all through the length. The bus bars and interconnections will protect with heat shrinkable PVC sleeve. And be shading code is red, yellow, blue and dark to distinguish the three stages and impartial of the LT board.
Air Circuit Breaker
Air circuit breakers, which generally utilized for the assurance of electrical gear with a stumbling loop. It associated with a hand-off intended to open the breaker naturally under irregular conditions. For example, overflow, over-burden, over-burdens, and so on. Air Circuit Breaker gives the short out, over-burden, earth flaw insurance of LT board.
The approaching section has Incoming Bus-bars, Air Circuit Breaker (ACB). The sub-approaching section comprises of Monitoring gadgets. For example, LEDs, Meters and Protection gadgets like Relays, Rotary Switches, Miniature Circuit Breaker (MCB), and HRC Fuses. The feeder section has Feeder Bus-bars.
Miniature Circuit Breakers
A miniature circuit breaker (MCB) is a little circuit breaker that utilized for residential and mechanical applications. It has two functions, for example,
Switching function: Switching Function of the MCB permits the association/separation of the LT panel.
Insurance function: Protection Function of MCB must seclude the LT panel in case of over current and over-burden and short-circuits.
LEDs
LED represents a light-transmitting diode. These are essentially utilizing for making pointers and different sorts of lightning. LED electrical vitality is changing over into optical vitality. These are a case of electroluminescence the primary points of interest in utilizing these are low vitality utilization, longer lifetime, solid form, littler size, and so forth. Today wherever LED lights are utilized and the use of LED is tremendous.
Pointers and signs: these are essentially utilized in meters, sign lights, traffic signals, leave signs, lightweight messages, showing boxes, and so forth.
Meters
These meters are computerizing type. These are multi-functioning meters. It should gauge KW, KVA, KVAR, V, I, PF, and so forth.
Transfer
A transfer is a programmed gadget that detects an anomalous state of LT panel and closes its contacts. These contacts in turns close and complete the circuit breaker trip loop LT panel subsequently makes the circuit breaker stumbled for separating the shortcoming part of LT panel from the remainder of the solid section.
Switches
A switch is using in the LT panel as a gadget for manifesting the moment of truth in the electric circuit. The switches might order into this panel, for example, the Rotary switch and press button.
HRC Fuses
HRC fuses or high breaking limit fuses. In these sorts of the circuit, the wire or component can convey deficiency current for known time. During this time the shortcoming is clearing, at that point, it doesn’t blow or melts else it liquefies.
About Post Author
