service for calibration of high voltage laboratory equipments for nabl accreditation . at dept . of electrical engineering , nit rourkela . , description: calibration of high voltage laboratory equipments for nabl accreditation . , 500kv ac power frequency test setup ( as per the specification mentioned in annexure ii in tender documents ) , 400kv impulse voltage test setup ( as per the specification mentioned in annexure ii in tender documents ) , 100kv ac power frequency test setup for partial discharge ( pd ) measurement ( as per the specification mentioned in annexure ii in tender documents )