1.Commissioned tests on newly purchased instruments, regular calibration of all types of quality control and maintenance instruments, and completion tests on instruments, converters and multi-function meters for SCADA (Supervisory Control and Data Acquisition) in new power plants and substations. 

2.Regular quality control calibration of physical measurement instruments such as infrared radiation temperature measurement guns, density meters (SF6 constant temperature pressure gauge) and working environment measuring instruments such as magnetic meters, noise meters, and irradiance meters and calibration of HP safety protection and inspection equipment. 

    (1)Calibration of various types of instruments and converters for SCADA 

    (2)Calibration of portable pointer-type and digital instruments 

    (3)Calibration of various types of field maintenance and testing instruments

    (4)Calibration of HV instruments

    (5)Calibration of working standard related instruments 

    (6)Calibration of impedance bridge and related instruments

    (7)Calibration of signal generators, oscilloscopes and related instruments

1.Regular repair or overhaul of instruments, converters, and multi-function meters for SCADA in power plants and substations. 

2.Maintenance of quality control maintenance equipment within the Company.

    (1)Maintenance of various types of instruments and converters for SCADA 

    (2)Repair of portable pointer-type and digital instruments

    (3)Repair of various types of field maintenance and testing instruments 

    (4)Repair of HV instruments

    (5)Calibration of working standard related instruments

    (6)Maintenance of impedance bridge instruments

    (7)Maintenance of signal generators, oscilloscopes and related instruments

1.Establishment, maintenance and retracing of the top standards of electricity within the Company.

2.Improvement to standard instrument calibration methods and techniques and correction to standards of transformer.

    (1)Calibration of reference standard related instruments

    (2)Calibration of calibration standard related instruments

    (3)Calibration of measuring standard related instruments

    (4)Calibration of precision impedance bridge 

    (5)Calibration of precision signal generators and oscilloscopes

1.Regular overhaul, completion test and maintenance of protection relays in power plants and substations. 

2.Replacement of protection relays in power plants and substations, and provision of simulation testing and accident analysis. 

    (1) Protection relay testing and repair 

    (2) Automatic voltage regulator (AVR) testing and repair

    (3) Dynamic test technology for protection relays

    (4) Analysis of protection relay accidents

    (5) Static and dynamic tests on feeder information terminal unit (FTU)