Micro controller based IDMT/DMT type over/under frequency relay study trainer

• One no. of PIC-Micro controller used as processor to read supply frequency & relay function.
• One number LCD to indicate Frequency & Time Parameters
• Five no’s of key used for Set point Adjustments
• One no. of 230/9V PT & ZCD used to sense supply frequency
• One no. of 12v auxiliary relay used for contactor operation
• One no of LED provide to indicate the relay tripping indication

 SPECIFICATION:

• Frequency input: (30-70Hz)
• Number of contact: One number NC contact @ 12V, 5A rating
• One number of NO contact @ 12V, 5A rating.
• Auxiliary supply: 230V AC, 50Hz.
• Power ON/OFF switch with indicator

VARIABLE FREQUENCY SOURCE

• One no. of 230V/24 voltage source provided with frequency adjustment (30-70Hz)

• Outputs terminated in the banana-sockets
• One no. of LCD used to indicate output frequency.
• Specification: Voltage range: 24V/230V AC (30-100Hz)

EXPERIMENTS:

• Study and testing of over/under frequency relay function with DMT/IDMT characteristics.

Optional:

• PC Interface with the above Relay