EQUALIZER-ST
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esiPGC EQUALIZER-ST MEDIUM AND LOW VOLTAGE MOTOR STARTUP SOLUTION

EQUALIZER-ST SYSTEM OVERVIEW The EQUALIZER-ST is a real-time, dynamic reactive power compensation system that utilizes a proven industrial technology to provide an additional solution for the challenges related to large motor startups. The system itself operates at low voltage and by utilizing a step-up transformer, the EQUALIZER-ST is also able to compensate for medium voltage networks. Medium Voltage Using a 690 V Step-Up Transformer THE ELECTRICAL CHALLENGE A motor start demands very high reactive power for a relatively short period of time. The starting current of an AC motor usually...

CENTRALIZED MOTOR STARTUP COMPENSATION The EQUALIZER-ST is a centralized motor startup solution, that provides fast compensation in real-time. In an environment of many motors, one EQUALIZER-ST system serves any number of motors, assuming that two motors are not started simultaneously. Eliminating the need to use individual soft start devices for each motor, makes the EQUALIZER-ST more cost effective than conventional compensation systems. The most common causes of overcurrents leading to voltage sags are motor startups. One of the main design features of the EQUALIZER-ST is its ability to...

Motor Current Waveform EQUALIZER-ST Current Waveform Network Current Waveform Measured Values Without & With Compensation: PARAMETER WITHOUT COMPENSATION WITH COMPENSATION Total Voltage Sag During Startup AU % Current During Startup

Network Voltage Waveform Motor Current Waveform 3 kA 0 kA -3 kA EQUALIZER-ST Current Waveform 3 kA 0 kA -3 kA 3 kA 0 kA -3 kA Network Current Waveform

EQUALIZER-ST Reactive Power - MP 3 Measured Values Without & With Compensation: PARAMETER COMPENSATION COMPENSATION Total Voltage Sag During Startup At 66 kV ΔU % Total Voltage Sag During Startup At 11 kV ΔU % Total Current At 11 kV

EQUALIZER-ST Reactive Power - MP 3

Low Voltage System which is designed to control the reactive energy at MV using a boosting transformer * *The System can be used without a boosting transformer for networks up to 690 V (480 V, 400 V, etc.) ABOUT ELSPEC Since it's launch in 1988, Elspec has continued to develop, manufacture and market innovative power quality solutions that often exceed our clients expectations. Our innovations not only simplify the understanding of the quality of power itself, but are also highly compatible making it suitable for any business and or application. Elspec's international team of professionals...