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  Thyristor / Contactor Switched APFC System  
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HT Application APFC RELAY



  Main Features :
  • Highly Sensitive.
  • Accuracy Class I.
  • Certified from NABL accredited Laboratory.
  • Intelligent Multi Method Switching (MMS) Algorithm.
  • Four Quadrant Measurement.
  • Data memory-45 days on hourly basis.
  • Communication port RS-232/485.
  • 2 / 4 Line LCD Display with backlit.
  • Energy Pulse Output.
  • Plug & Play Operation.
  • Computerized Test & Calibration Report.
  • Payment Lock Facility.
  • Plug in Terminal.
  • IP-54 Degree of Protection.

HT APFC RELAY - An intelligent high speed DSP + Microprocessor Based device to measure, calculate, display and store all electrical network parameters. Voltage & Current Feedback is achieved through HT CTís & PTís.

In built Intelligent Multi Method Switching (MMS) Algorithm enables user to get close control on network reactive power requirement. Multi Method Switching (MMS) Algorithm allows user to set different target power factor for Diesel Generators and Windmill Stations. A built in self test facility provided for checking calibration and operation of the relay without external load. The control functions even at low operating loads with great accuracy

GB Controlís APFC controller find usage and applications in all segments of industry viz Automobile factories, Cement Plants, Chemical & Fertilizer Plants, Metal Industries etc.

The other built in features viz Over Voltage Protection, Low Voltage Protection, Under Load Protection, Over Load Protection High Temperature etc. provides nonstop operation of APFC System.

Technical Specifications :

Auxiliary Supply :  110V/220V /440V Measurement via PT
Primary :  up to 132KV configurable in multiples of 11KV
Secondary :  110V
Inputs- Current Via CT. :  1A/5A CT Secondary
Current ckt. Burden :  <0.1VA
Display :  Single Line 16 char./4 Line 20 char. alphanumeric LCD
Power consumption :  Voltage circuits-10VA,Current circuits< 2VA.
Indications :  Dual color LEDís.
Operating modes :  Auto, Manual, Program, Standby mode.
Interface :  RS-232/RS-485, GSM (Optional).
Output :  1 to 16 Transistor/ Relay output
Enclosure :  144 mm x 144mm metal enclosure.
Mounting Orientation :  Vertical with attachable clamping screw terminals.
Mechanical arrangement :  IP 54
Weight :  900 gms.
Pulses Output :  KWH, KVARH.

Display Parameters :

  • Voltage, Current, Power Factor, Active Power (KW), Apparent Power (KVA)

  • Reactive Power (KVAR), Capacitive Reactive Power (CKVAR)

  • Active Energy (KWH), Apparent Energy (KVAH), Reactive Energy (KVARH)

  • Real Time, Date, Network fault message display

  • Capacitor bank status display, Load side Parameters viz. Current, P.F. & KVA.

Protections :
Controller offers protections in the following situations. High voltage, Low voltage, Over- load, Under-load, Voltage Imbalance. Load Current Imbalance, Over Capacitor Current, Capacitor Current. Imbalance, Over Temperature.

Programmable Parameters :

Target Power Factor : 0.90 lead to 0.85 lag.
Time Delay (TD) : 1 minute to 20 Minutes
CT Ratio : Current Transformer ratio to observe actual load current.
PT Ratio : Potential Transformer ratio to observe actual Line Voltage.
No. of Steps : 1 to 8 Capacitor steps.

Operating Mode : Auto Mode / Manual Mode / Programme Mode / Standard Mode.
Compensation Mode : Average / Maximum / Minimum of Load Kvar Basis.
Memory Storage : 45 Days on hourly basis


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