Global Business Solutions

Trinity  has a versatile range of Power Factor Correction relays suitable for all applications. These controllers are available in economy version with minimum features, intelligent models with advance control algorithm and also sub-second switching models with solid state outputs.

The entire series is economical user friendly and extremely reliable. Designs of these have been field proven for nearly fifteen years with more then 10000 units in service.

Measurement

All models are single phase measurement. APFCR & NEWTON+ needs a CT input from the mains as well as from Capacitor Bank (For VAR mode operation). NANOVAR take only one current input from the mains, since they have only basic PF control option. Voltage input is taken from phase & neutral.

Ease of installation

These controllers are user friendly and easy to program. There is no need to program C/K or bank sizes manually.

Low current operation

In VAR mode operation (Available in APFCR and NEWTON+) these controllers can sense as low as of 1% of the main load and take corrective action. PF control option requires minimum 2.5% of mains current for Newton+(Fast) and 6% of mains current for others.

Intelligent Control

The control parameter is VAR, and not PF. Target PF value is just used to calculate the capacitive VAR required to be added/removed to achieve the desired PF. e.g. If the target PF is unity, means that the target VAR in the system is zero. If system KVAR is 200 lagging, then the controller needs to add 200 KVAR of capacitor banks to reach zero VAR.

The calculation of the reactive power in the system is done by taking instantaneous samples of all voltage and current waveforms, in all four quadrants. These values are then subjected to DSP techniques to add a frequency independent 90° phase shift to current samples. The product of these voltage and current samples then generate signed VAR value.

VAR controller then takes into calculation the prevailing system KVAR, the prevailing bank KVAR and the bank sizes of each stage, and then switches ON/OFF the combination which is closest to the needed VAR.

This assumes a balanced loading of the electrical system. For unbalanced load conditions, Accuvar model is re-commanded.

L&T Electrical & Automation (E&A) offers a complete range of Automatic Power Factor Correction (APFC) controllers for industrial and commercial applications that automatically correct the power factor of electrical installations.

The (APFC) controllers enable monitoring of key parameters such as power factor, %I-THD & %V-THD to achieve the desired power factor, which results in energy saving and reduction in electricity bills.

Compact in size, APFC controllers are easy to use and install and, at the same time, it ensures exceptional reliability and efficiency of the electrical system.

 

etaULTRA - 3 CT Sensing APFC controller for Contactor and Thyristor switching

etaULTRA APFC Controller automatically corrects the power factor by connection and disconnection of capacitors. It has a specially formulated optimization program in the microcontroller which ensures accurate power factor control at set point and hunt-free operation.

• etaULTRA for Contactor switching : 8R, 16R
• etaULTRA for Contactor + Thyristor switching : 8T + 2R, 14T + 2R, 8T + 8R

Features:

• 2 & 4 Quadrant Operation for Sites with/without Solar Plants.
• 3 - Phase Current & Voltage Measurement
• PF Display – 3 Steps after Decimal
• Cascading in Master-Slave Configuration possible to increase contact outputs to 64 steps
• Provision for Dual PF Settings for Mains & DG Application
• Inbuilt RS 485 MODBUS Communication Protocol
• Power Quality Information such as Total & Individual I-THD & V-THD up to 31stOrder.

 

etaSMART - 1 CT Sensing APFC controller for Contactor and Thyristor switching

etaSMART APFC Controller automatically corrects the power factor by connection and disconnection of capacitors. With an in-built specially formulated optimization program in microcontroller, it ensures accurate power factor control at set point and hunts free operation.

etaSMART for Contactor switching – 4R, 6R, 8R, 12R, 14R, 16R

etaSMART for Thyristor switching – 6T, 8T, 12T, 15T

Features:

• 2 & 4 Quadrant Operation for Sites with/without Solar Plants
• AUTOSET function – for Automatic programming of controller
• CT Secondary – 1/5 Amp Site Selectable
• Automatic detection & correction of CT polarity [in 2 quadrant mode]
• PF Display – 3 Steps after Decimal

 

etaCON M - 1 CT Sensing APFC controller for Contactor switching

The etaCON M Series are communicable power factor controllers which automatically correct power factor with the help of contactors by switching the required number of capacitor banks.

The etaCON M series is compact in design. It is available in two frame sizes

Frame 1: etaCON M3, etaCON M5 : 96mm x 96mm

Frame 2: etaCON M8 : 144mm x 144mm

Features:

• 2 & 4 Quadrant Operation for Sites with/without Solar Plants
• Backlit LCD Display
• CT Secondary – 1/5 Amp Site Selectable
• Automatic detection & correction of CT polarity [in 2 quadrant mode]
• Optional RS 485 Modbus Communication protocol
• Maamidi

Relay Cards -- with 1 change over, 8  channels and 230v ac.