Micro controller based earth fault relay trainer

• One no. of PIC-Micro controller used as processor to read fault-current, & relay Function.
• One no. LCD to indicate current & time parameters.
• Four no. of key used for set point adjustmens
• One no. of 5A CT used to sense EARTH current
• One no. of 12V auxiliary relay used for contactor operation
• One no of LED provided to indicate the relay tripped indication

SPECIFICATION

•  Current Input: 0-2 Amp
• One number NC contact @ 220V, 5Amp rating,
• One number of NO contact @ 220V, 5Amp rating.
• Auxiliary supply: 230V AC, 50Hz
• Power ON/OFF switch with indicator

CURRENT INJUCTION SOURCE

• One no. of auto transformer used for current adjustment
• One no. of loading transformer used for current source.
• Current output terminated in the banana-sockets
• One no. of digital meter used to indicate current.
• Specification: current range: 0-2Amp AC (Continuously Variable).

EXPERIMENTS:

• Study & testing of DMT type earth-fault relay with different current & time setting.
• Study & testing of IDMT type earth-fault relay with different current & time setting

Optional:

• PC Interface with the above Relay