UNEECO LV

ABOUT US
UNEECO, the prime Division of UNEECO Group of Companies, have own type tested panels, representing a number of prestigious & world famous manufacturers who have enabled us to extend our services in the areas of electrical & electronics engineering. We supply all products & equipment for the Electrical Utility from our reputed Principals who have proven reliability, in-house expertise to manufacture state of the art high quality products for optimum performance.

UNEECO Products

UNEECO LV UNEECO MV ALL

Main Panel

Main Panel is called the Main Distribution Board or MDB is the primary hub that connects the facility to the power source. It acts as the “master controller”. It receives high-capacity power directly from a utility transformer or generator and divides it into smaller, safer circuits to feed sub-panels or large equipment.

The international standard for low voltage (LV) main panels is the IEC 61439 series. This standard replaced the older IEC 60439 series to provide clearer definitions of responsibilities and more rigorous testing procedures.

For an LV Main Distribution Board (MDB), the standard is split into two primary parts:
IEC 61439-1 (General Rules): This provides the fundamental requirements, definitions, and verification framework applicable to all types of LV assemblies.
IEC 61439-2 (Power Switchgear and Controlgear Assemblies): This is the product standard specifically for main distribution boards, motor control centers (MCCs), and large power panels.
Forms of Separation: Definess the internal subdivision (e.g., Form 3b or 4b) to isolate busbars from functional units for safer maintenance.

Sub Main Panel

Sub Main Distribution Board (SMDB)—also known as a sub main panel—acts as the intermediate link between the Main Distribution Board (MDB) and the final consumer units or equipment.

Sub Main Distribution Boards (SMDBs) are governed by the same international standards as Main Distribution Boards: the IEC 61439 series.

IEC 61439-2 (Power Switchgear and Controlgear Assemblies): This is the most common standard for SMDBs in industrial and commercial environments. It applies to panels operated by “instructed or skilled persons” and covers high-performance requirements like short-circuit withstand and temperature rise.

Internal Separation: Often specified as Form 2b for sub-panels to isolate busbars from functional units, enhancing safety.

Disribution Board

Distribution Board (DB)—also known as a Consumer Unit or Final DB—is the last stage of the distribution network before the power reaches the actual appliances, lights, and sockets.

Standard: Typically governed by IEC 61439-3, which covers distribution boards intended for use by non-experts.

Motor Control Panel

Motor Control Center (MCC) or Motor Control Panel is a specialized assembly designed to start, stop, and protect electric motors. While a standard distribution board just provides power, an MCC provides functional control. It manages the heavy “inrush” current of motors during startup and monitors their performance to prevent burnouts or mechanical failures.
Key Functions Motor Starting methods such as DOL (Direct-On-Line), Star-Delta, or Variable Speed Drives (VFDs) for smooth acceleration. Overload Protection: Uses Thermal Overload Relays or electronic sensors to trip the circuit if the motor draws too much current (e.g., if a pump is jammed). Remote Automation: Integrates with PLCs (Programmable Logic Controllers) or Building Management Systems (BMS) to allow motors to be controlled automatically based on pressure, flow, or temperature. In high-end Schneider systems like BlokSeT or Okken, the MCC is made of withdrawable units (drawers). This allows a technician to pull out a single motor’s control module for repair without shutting down the rest of the factory.
Specific Standards for MCCs IEC 61439-2 (The Main Standard): Governs the assembly itself, focusing on the integration of motor starters, busbar structures, and temperature limits during continuous motor operation. IEC 60947 (Component Standard): While 61439 covers the panel, the individual components inside (like contactors, soft starters, and VFDs) must comply with the IEC 60947 series (e.g., IEC 60947-4-1 for electromechanical contactors and motor-starters). IEC/TR 61641 (Arc Flash): This is a critical technical report for MCCs. It provides the criteria for testing the assembly under internal arc fault conditions to ensure the safety of operators standing in front of the panel. For high-reliability MCCs like Schneider Okken or BlokSeT, Form 3b or 4b separation is standard. This ensures that the withdrawable units (drawers) are isolated from the main busbars, allowing a single motor starter to be serviced while the rest of the panel remains live.

Feeder Panel

Feeder Panel (or Feeder Pillar) is a specialized distribution board designed to provide power to downstream loads or remote equipment across a large site. While a Main Panel (MDB) manages the primary source, a Feeder Panel is often located outdoors or at the perimeter of a building to feed specific infrastructure like street lighting, pumps, or separate workshops. Standard: Like other power panels, it is governed by IEC 61439-2. Durability: If outdoor, they are often rated IP54 or IP65 for weatherproofing.”

ATS Panel

Automatic Transfer Switch (ATS) is an intelligent power “bridge” that ensures a building stays powered even if the main utility grid fails. Its primary job is to automatically switch the electrical load between two different power sources—usually the Utility Grid (Primary) and a Backup Generator or UPS (Secondary). It follows IEC 61439, the ATS device itself must comply with IEC 60947-6-1, which specifically covers “Multiple function equipment – Transfer switching equipment.”

ATS is housed inside a metal panel, the complete assembly must comply with IEC 61439-2

Automatic Power Factor Correction panel

APFC panel is an electrical device that automatically adjusts the power factor of an electrical installation. The power factor is the ratio of real power (kW) to apparent power (kVA) in a system. A low power factor indicates inefficient use of electrical power, leading to higher energy costs and potential penalties from utility companies. The APFC panel helps maintain a power factor close to unity (1), which is essential for optimizing energy consumption and ensuring the smooth operation of electrical equipment.
Standard: IEC 61921 is an international standard that specifies requirements for low-voltage AC shunt capacitor banks used for power factor correction

ATS Controller

The ATS Controller serves as the central control unit for an Automatic Transfer Switch (ATS). It is responsible for monitoring the power supply and managing the switching operations to ensure a seamless transfer of power between the normal and emergency power sources. The ATS Controller continuously checks parameters such as voltage, frequency, and phase angle to detect any issues with the primary power supply. Upon failure, it initiates the transfer sequence to the backup power source, ensuring that critical loads continue to operate without interruption.

Active Harmonic Filter Panel

In Schneider Electric’s low voltage (LV) switchgear, the AHF panel refers to the Active Harmonic Filter section. It is a specialized power quality solution, primarily from the AccuSine family (e.g., AccuSine PCS+), designed to stabilize electrical networks by cleaning up harmonic distortion.
Enclosure: Typically a floor-standing or wall-mounted modular panel with ingress protection ranging from IP00 to IP54.
Standard Ratings Current: Standard modules are available in 60A, 120A, 200A, and 300A units.
Scalability: Up to 10 units can be connected in parallel to provide a combined compensation of up to 3000A. Voltage: Designed for networks ranging from 380V to 690V AC.
The AHF panel is first and foremost a low-voltage switchgear and controlgear assembly. It must comply with the IEC 61439 series, which replaced the older IEC 60439 standard