LT Switchgear - Integrated Power & Engineering

Low Tension (LT) Switchgear – 415V, 50Hz Power Distribution Panels | Integrated Power & Engineering

At Integrated Power & Engineering, we deliver reliable Low Tension (LT) Switchgear solutions engineered for safe, stable, and efficient low-voltage power control and distribution. Our LT panels are designed for 415V AC (3-phase, 4-wire), 50Hz systems—supporting dependable protection, optional smart monitoring, and long service life across residential, commercial, and industrial infrastructures in Bangladesh.

In standard electrical design practice, the main incomer rating is selected based on transformer capacity, while outgoing feeders are configured based on actual user load distribution (lighting, HVAC, lifts, pumps, MCC loads, DBs, and critical feeders). Following this universal approach, we supply custom-built LT switchgear lineups that match your transformer rating, fault level, and site constraints—ensuring safety, reliability, and cost-effective performance.

Product Overview: What is LT Switchgear?

LT Switchgear is the central low-voltage distribution system that receives power from a distribution transformer (and/or DG/UPS/solar sources where applicable) and distributes it to multiple circuits through protected feeders. It ensures controlled switching, safe isolation, and protection against overloads, short circuits, and faults—reducing downtime and protecting valuable electrical equipment.

Product Range (LT Panels We Offer)

Our LT switchgear lineup includes:

Main LT Panel (MLTP)
Power Control Center (PCC)
Motor Control Center (MCC)
Distribution Boards (DB / SDB / LDB)
Changeover Panels / ATS (Grid–DG–UPS transfer)
Feeder Pillars (indoor/outdoor distribution)
Busbar Trunking Systems (BBT)
Synchronizing Panels (DG synchronization and load sharing)

Panels can be supplied in fixed type or draw-out type, depending on your maintenance strategy and operational preference.

Key Specifications (Universal Technical Data)

Rated System Voltage

415V AC, 3-phase, 4-wire

Frequency

50Hz

Rated Current

Up to 6300A (customizable based on transformer rating and system design)

Short Circuit Withstand

Up to 65kA for 1 second (as required by fault level and protection coordination)

Enclosure Protection (IP Rating)

IP42 / IP54 / IP65 (indoor/outdoor options)

Standards & Compliance

Designed and manufactured to meet relevant requirements, including:

IEC 61439 / IS 8623
IEC 60947
Project/utility specifications where applicable

Typical Universal Lineup Concept

Transformer-Based Incomer + Load-Based Outgoing Feeders

✅ Main Incomer Section (Transformer Rated)

Incomer breaker (ACB/MCCB) selected as per transformer capacity and fault level
Busbar sizing based on rated current and thermal performance
Safe isolation provisions and protection coordination
Digital metering options (V, A, kW, kWh, PF, Hz) with indications

✅ Bus Section / Bus Coupler (Optional)

Used for dual incomer arrangements or bus sectionalizing
Improves operational flexibility and maintenance convenience

✅ Outgoing Feeder Section (Load Distribution Based)

Feeders grouped by load type (DBs, MCC, HVAC, lifts, pumps, critical loads)
MCCB/MCB feeders with selective protection
Provision for future expansion and additional feeders

✅ APFC Section (Optional but Recommended)

Improves power factor and power quality
Helps reduce reactive power penalties and improves efficiency

✅ Source Integration (Project-Based)

DG synchronizing / ATS changeover
UPS-backed critical feeder distribution
Solar inverter coupling and monitoring
Optional SCADA/BMS connectivity for centralized monitoring

Key Features & Benefits

Safe operation & reliable protection against overloads and short circuits
Modular and scalable design to support future expansion
Smart monitoring options with metering, status indication, and alarms
Energy efficiency support through APFC and load management
Custom-built panels tailored to site layout, busbar rating, and feeder needs

Applications

Commercial & Residential Buildings
Hospitals, Universities, and Schools
Shopping Malls & IT Parks
Industries & Manufacturing Units
Data Centers & Telecom Facilities
Hotels, Airports & Metro Stations
Infrastructure & Utility Services

Why Choose Integrated Power & Engineering?

Local manufacturing & support in Bangladesh for faster delivery and service
Certified components (Schneider / ABB / Siemens or approved equivalents)
Project-based customization aligned with transformer rating and load distribution
End-to-end service from design → manufacturing → testing → installation support → after-sales

FAQs (Frequently Asked Questions)

1) How do I select the main incomer rating for an LT panel?

The incomer rating is selected based on your transformer capacity (kVA), expected loading, and the site’s fault level. We design the incomer using appropriate ACB/MCCB selection and busbar sizing to match the transformer output safely.

2) How are outgoing feeders determined in LT switchgear?

Outgoing feeders are planned according to your actual load distribution—such as lighting, HVAC, lifts, pumps, MCC motor loads, and critical circuits—so that each feeder has correct protection and reliable operation.

3) What is the difference between PCC and MCC panels?

A PCC (Power Control Center) mainly distributes power to various feeders and sub-panels, while an MCC (Motor Control Center) focuses on motor feeders and includes control, protection, and starter arrangements for motors and pumps.

4) Can LT switchgear integrate with DG, UPS, and solar systems?

Yes. LT switchgear can be designed to integrate with diesel generators (DG) through ATS/changeover or synchronizing panels, and can also support UPS-backed feeders and solar inverter coupling, based on your project needs.

5) Which IP rating should I choose for LT panels?

For indoor electrical rooms, IP42 is common. For dusty or humid environments, IP54 is preferred. For outdoor installation or harsh conditions, IP65 may be recommended depending on the site exposure.

6) Is APFC necessary in LT switchgear?

APFC is optional but strongly recommended when improving power factor is required. It helps reduce reactive power penalties, improves power quality, and can lower operating costs.

7) Do you supply fixed type or draw-out type LT switchgear?

We supply both. Fixed type panels are cost-effective and widely used, while draw-out type improves maintenance convenience and reduces downtime for critical installations.

8) Do you provide design, testing, and after-sales support?

Yes. We provide end-to-end service including design support, manufacturing, routine testing, installation/commissioning assistance, and after-sales support within Bangladesh.