ELECTRICAL ANSI CODE


12   ———- Overspeed (2 set points)
14   ———- Underspeed (2 set points)
21B ———- Underimpedance
24   ———- Overfluxing (V/Hz)
25   ———- Synch-check
26/63 ———-  Thermostat / Buchholz
27/27S ———- Undervoltage (L-L/L-N)
27D ———- Positive-sequence undervoltage
27R ———- Remanent undervoltage
30 ———- Annunciation
32P ———- Directional real overpower
32Q/40 ———- Directional reactive overpower
37 ———- Phase undercurrent
37P ———- Directional active underpower
38/49T ———- Temperature monitoring
40 ———- Field loss (underimpedance)
46 ———- Unbalance/negative sequence
47 ———- Negative sequence overvoltage
48 ———- Excessive starting time
49 ———- RMS Thermal overload
50/27 ———- Inadvertent energization
50/51 ———- Phase overcurrent
50BF ———- Breaker failure
50G/51G ———- Ground sensitive
50N/51N ———- Ground fault
50V/51V ———- Voltage restrained overcurrent
51C ———- Capacitor bank unbalance
51LR ———- Locked rotor
59 ———- Overvoltage (L-L or L-N)
59 ———- Overvoltage (L-L)
59N ———- Neutral voltage displacement
60/60FL ———- CT/VT supervision

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