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Normal working Input current increased T1 coil= 109.9℃, T1 core= 100.4℃, Photo-coupler(U2)= 80.4℃Photo-coupler(U3):=89.4℃ Ambient= 25.2 ℃ No hazard U2(pin3-pin4) U2(pin1-pin2) U2(pin1) U2(pin3) U3(pin3-pin4) s-c s-c o-c o-c s-c 264 264 264 264 264 5min 5min 5min 5min 5min F1 F1 F1 F1 F1 0.045 0.288 0.288 0.286 0.045 Unit shut down immediately after shorted recoverable, No hazard Normal working, No hazard Normal working, No hazard Normal working, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard Unit shut down immediately after shorted recoverable, No hazard R3 s-c 264 1h26min F1 0.290→0.310 U3(pin1-pin2) s-c 264 5min F1 0.051 U3(pin1) o-c 264 5min F1 0.048 U3(pin3) o-c 264 5min F1 0.046 TR1(pin1-pin2) s-c 264 5min F1 0.028 TR1(pin3-pin4) s-c 264 5min F1 0.034 TR1(pin4-pin5) C8 s-c s-c 264 264 5min 5min F1 F1 0.049 0.040 D4 s-c 264 5min F1 0.023 Output s-c 264 5min F1 0.038 Output s-c 100 5min F1 0.026
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Output o-l 264 8h33min F1 0.290→0.309→0.334→0.358 Overload to 3.4 A, unit shutdown, No hazards, T1 coil= 99.1℃, T1 core= 95.5℃, Photo-coupler(U2)= 89.8℃Photo-coupler(U3):=93.5℃ Ambient= 27.5 ℃ Transformer o-l 264 8h53min F1 0.285→0.312→0.330→0.362 Overload to 3.42 A, unit shutdown, No hazards, T1 coil= 101.5℃, T1 core= 95.5℃, Photo-coupler(U2)= 82.6℃Photo-coupler(U3)= 92.6℃ Ambient= 25.2 ℃ s-c short, o-l overload, o-c open circuit supplementary information Note: Under Rated Voltage Report in result section: Measure transformer temperature at all times (one thermocouple or IR pistol) Fuse/ other protective device opened Yes / No Components damaged (state which ones) Emit Flames? Emit molten metal? Did it pass the electric strength test? What happened to the equipment? Shutdown / cycle protection / normal operation /input power or current reduced
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