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List of maintenance and repair service items

Item categor Controller part Tools required Man-hours requirement Test purpose
1.1 Measurement of power supply and switching power supply Multimeter 0.5h-1h Inspect whether the service voltage of equipment and each unit is stable
1.2 Detection of PCB board function Multimeter, oscilloscope, etc 2h-4h Check whether the operation status and performance of each PCB board are stable
1.3 Trip test of controller interlock protection Multimeter 2h-3h Check whether the main body of SVC equipment can output alarm and trip in time when an fault occurs
1.4 Input and output detection of controller Multimeter, short connecting piece, screwdriver, etc. 2h-3h 1. Check whether the signal displacement of circuit breakers, disconnectors and other equipment in the main circuit of SVC is correct. 2. Whether the input switching value can output alarm and trip in time in case of fault of the body and auxiliary equipment of SVC equipment
1.5 Inspect and fasten terminal wiring Multimeter, screwdriver 1h-2h Make sure all wiring is secure
1.6 Monitoring computer and background optimization processing and backup Mobile hard disk, special optimization software 1h-2h Make the running environment of monitoring software be safe and stable, and extend the service life of the monitor
1.7 Cleaning controller Vacuum cleaner, alcohol, brush, rust remover, three-proof paint for PCB board, etc. 2h-3h Extend the service life of electronic devices
Item category Thyristor valve part Tools required Man-hours requirement Test purpose
2.1 Detection of thyristor resistance Multimeter 1h-2h Check whether the resistance of thyristor meets the standard and observe how much the performance of thyristor decrease
2.2 Pressure equalizing detection of thyristor valve Multimeter, professional experimental wire 1h-2h Check whether the thyristor and resistance-capacitance absorption circuit are normal
2.3 Conduction test of thyristor valve Multimeter, oscilloscope, professional experimental wire 2h-3h Check whether the thyristor can be triggered reliably
2.4 Pulse box waveform detection of electromagnetic triggering thyristor valve Oscilloscope 2h-3h Check whether the pulse circuit works normally
2.5 Energy-taking test of the TE board of photoelectric thyristor valve Screw driver, short connecting piece 2h-3h Check whether TE board works normally
2.6 Setting experiment of breakdown detection Multimeter, professional experimental wire 1h-2h Check whether the equipment trips reliably in case thyristor is broken down
2.7 Resistance value detection of resistance-capacitance absorption part Multimeter, screwdriver 1h-2h Check whether the resistance-capacitance absorption capacitance is normal
2.8 Capacitance value detection of resistance-capacitance absorption part Capacitance meter, needle-nose pliers 1h-2h Check whether the resistance-capacitance absorption capacitance is normal
2.9 Fastening of electrical wiring Adjustable wrench, screwdriver 1h-2h Ensure that all wiring is firm to prevent electric discharge and air leakage
2.10 Bolt fastening High-pressure air gun, alcohol, rust remover, three-proof paint, etc. 2h-3h Make sure that all bolts at connections are tight
2.11 Cleaning of thyristor valve Multimeter, screwdriver 1h-2h Ensure that the thyristor valve is clean and the components are extended
2.12 Earthing detection Earthing resistance tester 1h-2h Check whether the earthing point is reliably grounded
Item category Item voltage controller and filter channel Tools required Man-hours requirement Test purpose
3.1 DC resistance detection of reactor Insulating ladder of DC resistance tester 2h-3h Check whether there is wire break and short circuit between turns in the reactor
3.2 Inductance detection of reactor Inductometer, wire, etc. 1h-2h Check whether the inductance of reactor meets the standard
3.3 Resonance point detection of filter channel Inductometer, capacitance meter, wire, etc. 3h-4h Check the performance parameters of capacitor and reactor and judge whether the resonance point deviates
3.4 Fastening of electrical wiring Multimeter, screwdriver 2h-3h Check whether the equipment wiring is loose, ensure that the wiring is firm, and prevent electric discharge, electric leakage and heating
3.5 Insulation and withstand voltage test of capacitor and reactance Equipment for withstand voltage test 12h-24h Test the insulation characteristics of capacitance and reactance
3.6 Fastening of fixing bolts Adjustable wrench, insulating ladder (it shall be provided by the user in special case) 2h-3h Check whether the bolts of the equipment are loose, ensure that the bolts are tight, and prevent electric discharge, electric leakage and heating
3.7 Record of arrester action 0.5h Check the action of arrester to see if there is overvoltage fault
3.8 Grounding detection Ground resistance tester, wire, etc. 0.5h-1h Check whether the ground point is reliably grounded
3.9 Cleaning of primary equipment High-pressure water gun, alcohol, rust remover, brush, etc. 3h-4h Ensure that the primary equipment is clean and free of metal that can lead to electric discharge
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