V Instruments

Feeder Protection Simulation Experimental Unit

Feeder Protection Simulation Experimental Unit

This Feeder Protection Simulation Study Unit used for simulating and studying the protection schemes of Radial & parallel feeder protection  and  various fault conditions.  Protection is provided through over current + earth fault relay. Necessary Resistive /lamp load & CT’s and PT’s are also provided in the testing panel. Proper rating fuses and protection devices are provided in the panel, it consists of

  1. Power systems Protection Relays (Digital Relays)
  2. Panel with Meter arrangements

Power system Protection Relays

 2 No’s of Numerical  3 phase over current relay + earth fault relay  (MAKE C&S)

  • 2 No’s of Numerical  Directional -3 phase over current relay + earth fault relay  (MAKE C&S)
  • Numerical over voltage / under voltage relay-MAKE C&S/PLI (provided with Optional cost)

 Numerical 3 phase over current relay + earth fault relay (non-directional relay)

  • Type                         :           Digital Relay (Numerical type)
  • Function                         :           3 elements over current +single element

EF Relay

  • CT Input                         :           1A
  • Current Setting                         :           up to 120%
  • Time Setting                         :           available
  • Function                         :           IDMT
  • Output                                     :           NC&NO Contact@2A
  • Auxiliary supply                         :           230VAC
  • Make                         :           C&S

Numerical 3 phase directional over current relay + earth fault relay (directional relay)

  • Type                         :           Digital Relay (Numerical type)
  • Function                         :           3 elements over current +single element

EF Relay

  • CT Input                         :           1A
  • Current Setting                         :           up to 120%
  • Time Setting                         :           available
  • Function                         :           IDMT
  • Output                                     :           NC&NO Contact@2A
  • Auxiliary supply                         :           230VAC
  • Make                         :           C&S

Numerical  3 phase over /Under Voltage relay

 

  • Type                         :           Digital Relay (Numerical type)
  • Function                         :           3 elements over /Under voltage Relay
  • PT Input                         :           110VAC
  • Voltage Setting                         :           up to 120%
  • Time Setting                         :           available
  • Function                         :           IDMT
  • Output                                     :           NC&NO Contact@2A
  • Auxiliary supply                         :           230VAC
  • Make                         :           C&S

Panel with Meter arrangements

Powder coated MS panel with stickered front panel is provided to fix all the relays, Digital meters , CT & PT  etc  , The detailed specifications is as below

Instruments Transformers (CT & PT)

  •  5/1 A CT is provided for all current relays
  • CT secondary outputs are terminated in front panel with necessary terminal identification for relay interconnection by user
  • 220/110V or 63V PT is provided for all voltage & frequency & synchronizing relays
  • CT secondary outputs are terminated in front panel with necessary terminal identification for relay interconnection by user
  • All relays specification matched with feeder panel specification using CT/PT’s
  • All are mounted on a nice cabinet with necessary diagram indication

 Digital Meters

 18 no. of AC digital ammeter provided for current measurement in various sections of feeder

  • Three no. of ac digital voltmeter provided for ac voltage measurement.

 Others features

 Nine numbers of current limiting resistor-1.5A with banana terminations is provided for short circuit fault creations

  • 3 phase breakers & MCB’s are provided for protection &Necessary 3 phase indicators are provided

 3 phase Load

  •  One number of three phase Lamp load provided with diff-load selector switch is provided for alternator loading
    • Input :           3 phase 415vac
    • Capacity :           5 KVA
    • Number of load ON/OFF switch:

Input                                                              :           3 Phase -415vac & Capacity

:           3 Phases -3KVA

Experiments

  • Study of radial feeder protection with time /current grading
  • Study of Parallel feeder protection/current grading