Microcontroller Based Differential Relay

Microcontroller Based Differential Relay :

This test set-up consists of a. Microcontroller based differential relay. b. 300VA transformer set-up

SPECIFICATIONS :

• One PIC Microcontroller used as processor to read all current, (PY, SY) & activation of relay function
• One LCD to indicate, - Set value, All currents - Set time, DMT/IDMT type - Relay tripping time. - Biased/Unbiased type status
• Four numbers of key used - To select IDMT/DMT type or biased un-biased type - Set current value adjustment - Set time adjustment - Reset function
• Six 5A CT used to sense primary and secondary current.
• One 12V TPTT auxiliary relay used for contactor operation.
• Specification: - Current input : 0-5Amp - Voltage input : 0-230V - Number of contact : Three number No contact @ 220V, 10Amp rating. - Auxiliary supply : 230VAC, 50Hz
• PC interfacing facility power ON/OFF switch with indicator.
• Make : VI MICRO
• Model : VPL - 83A