Micro controller directional over current relay study trainer
MICRO CONTROLLER BASED DIRECTIONAL OVER CURRENT RELAY
- One no. of PIC-Micro controller used as processor to read fault-current, & Voltage phase angle & relay function.
- One no. LCD to indicate Current & Time Constants.
- Four no. of key used for Set Point adjustments
- One no. of 5A CT used to sense fault current
- One no. of 230/9V PT used to sense voltage
- One no. of ZCD for phase angle measurement.
- One no. of 12V auxiliary relay used for contractor operation.
- One no of LED to indicate the relay tripping operation
SPECIFICATION:
- Current input: 0-5 Amp.
- Voltage input: 0-230V
- Phase diff.: 0-89 deg.
- of contact: One no. NC contact @ 220V, 5Amp rating
- One no. of NO contact @ 220V, 5Amp rating.
- Auxiliary supply: 230V AC, 50Hz
- Power ON/OFF switch with indictor.
CURRENT & VOLTAGE INJUCTION SOURCE
- One no. of auto transformer 8A used for current adjustment.
- One no. of auto transformer 8A used for Voltage adjustment so as phase angle adjustment.
- Two no’s of loading & phase shifting transformer provided for current and phase Adjustment (230/16V, 4A)
- Current & Voltage output terminated in the banana-sockets.
- Specification: Current range: 0-5 Amp AC. (continuously variable) phase Diff 0-90 deg. (w.r.t. voltage)