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electronic load controller manufacturer
electronic load controller manufacturer

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ELECTRONIC LOAD CONTROLLER

 

WHAT IS ELC? Electronic Load Controller (ELC) is a controller used in small hydro power plant to control the frequency of generator by diverting excess power to dummy/ballast load. Power diversion to dummy load is done electronically through thyristor (SCRs) automatically without any moving parts and human interference. The goal of ELC is to make sure that generated power by the turbine is the same with power consumed by load. thus frequency and voltage will be maintained stable (50Hz). Some of main advantages of ELC are:
  • Constant frequency and voltage thus avoid damage on electrical appliances
  • No watter hammer risk, since there is no need to close the valve
  • Avoid runaway speed on generator
  • No operator required to open or close the turbine (unintended operation is possible)
  • Plug and play system, no special skill required to install and operate it
  • Free of maintenance and long life expectancy
HIGHLIGHT FEATURES
  • Micro controller DIGITAL system technology for high performance, accuracy and reliability
  • Phase angle control based, with dual step system for less harmonic
  • Dip switch control for additional PI setting, frequency, droop, synchronization and on grid application
  • Built in under/over frequency relay (5A)
  • No parameter adjustment/setting required during commissioning
  • Suitable for synchronous for isolated, grid connect or paralel system
  • Integrated with standard protection and metering, no need additional panel
  • Simple and robust, easy in operation and maintenance
  • Competitive price compare to other type of control system.
GENERAL ELC SPECIFICATION
1. ELC Type     Digital system with microcontroller
2. Control method Phase angle control, two steps
3. Power           1 - 500 kW
4. Voltage   230/400 Volt or 120/208 Volt
5. Phase  1 & 3 Phase
6. Frequency 50 Hz or 60 Hz
7. Freq. accuracy <± 0.2 Hz
8. Freq. sensing 10 ms or 100 times/s at 50 Hz
9. Recovery time ±3 seconds

ELC Standard Protection

  •  Main load MCCB
  •  Main load contactor
  •  Fuse/ MCB protection
  •  Over/Under Frequency relay (optional)
  •  Lightning arrester (optional)
  • Exhaust fan cooler (optional)
ELC Standard Metering
  •  Pilot lamps generator, 3 phase
  •  Ampermeter ballast, 3 phase
  •  Ampermeter consumer, 3 phase
  •  Voltmeter generator, 1 Phase
  •  Hour counter, 1 Phase
  •  Frequency generator, 1 Phase
  •  Digital Multi meter (optional)

 

Download the brochures

ELC BROCHURE ENGLISH

ELC BROCHURE BAHASA

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