U<ANSI 27
Chitetezo cha Undervoltage
Trips when the voltage falls below the setting.
Ma relay oteteza
Chithunzi cha AMR
- Zolowetsa zamakono ndi ma voltage ngati pakufunika
- Kuyika kwa digito ndi kutulutsa ngati pakufunika
- Chophimba chachikulu chokhudza
- RS232 ndi RS485 madoko
- Kuthandizira kwa protocol ya IEC 61850 yolumikizirana
IEC 61850
communication protocol
RS232 · RS485
serial ports
Touch
large touch screen
Ntchito zoteteza
U>ANSI 59
Chitetezo cha Overvoltage
Trips when the voltage rises above the setting.
I>> / I>ANSI 50/51
Chitetezo chosagwirizana ndi njira
Instantaneous (50) and IDMT time-delayed (51) tripping on overcurrent and short circuit.
IE>> / IE>ANSI 50N/51N
Chitetezo chopanda njira
Instantaneous and time-delayed protection against residual current and phase-to-earth faults.
I> →ANSI 67
Directional overcurrent chitetezo
Overcurrent that checks the power direction, operating only for forward or reverse faults.
IE> →ANSI 67N
Directional Grounding Protection
Directional earth fault, for ring networks and parallel feeders.
I2>ANSI 46
Negative chigawo overcurrent chitetezo
Detects unbalance, broken conductors and single phasing from the negative-sequence current.
θ>ANSI 49
Chitetezo chowonjezera
A thermal model of the plant that trips before a cable, transformer or motor overheats.
CBFANSI 50BF
Chitetezo chachikulu cholephera
Trips the upstream breakers when a breaker fails to open after a trip command.
I> ↑CLP
Ntchito yozindikira katundu wozizira (CLP)
Raises the settings for a while after a long-dead feeder is re-energised, avoiding nuisance trips.
I2f / I1fInrush
Inrush current kuzindikira ntchito
Recognises transformer inrush from the second harmonic and blocks false trips.
Id>ANSI 87
Chitetezo chosiyana
Compares the currents into and out of the plant and clears faults inside the zone fast.
Mapulogalamu apamwamba
01Ili ndi malo amphamvu komanso osavuta kugwiritsa ntchito mapulogalamu pokhazikitsa ntchito zosiyanasiyana
02Kutha kujambula mpaka 200 oscillographs, chipika chaulendo
03Ili ndi magulu 4 owongolera
04Ma module a pulogalamu ya Signal Routing pogawira ma siginecha ogwira ntchito kuti atumize zolowa ndi zotuluka
05Kutha kutulutsa zoikamo zopatsirana mumtundu wa XRio
Zikalata zotumizira
- Power Research Institute