U<ANSI 27
Undervoltage protection
Trips when the voltage falls below the setting.
Marelay ekudzivirira
AMR relay
- Ikozvino uye magetsi ekuisa sezvinodiwa
- Digital kupinza uye kubuda sezvinodiwa
- Hombe touch screen
- RS232 uye RS485 zviteshi
- Tsigiro yeIEC 61850 kutaurirana protocol
IEC 61850
communication protocol
RS232 · RS485
serial ports
Touch
large touch screen
Dziviriro mabasa
U>ANSI 59
Overvoltage dziviriro
Trips when the voltage rises above the setting.
I>> / I>ANSI 50/51
Kwete-directional overcurrent kudzivirira
Instantaneous (50) and IDMT time-delayed (51) tripping on overcurrent and short circuit.
IE>> / IE>ANSI 50N/51N
Non-directional grounding protection
Instantaneous and time-delayed protection against residual current and phase-to-earth faults.
I> →ANSI 67
Directional overcurrent kuchengetedza
Overcurrent that checks the power direction, operating only for forward or reverse faults.
IE> →ANSI 67N
Inotungamira Grounding Dziviriro
Directional earth fault, for ring networks and parallel feeders.
I2>ANSI 46
Negative chikamu overcurrent kudzivirira
Detects unbalance, broken conductors and single phasing from the negative-sequence current.
θ>ANSI 49
Kudzivirirwa kwakanyanya
A thermal model of the plant that trips before a cable, transformer or motor overheats.
CBFANSI 50BF
Kiyi yekutadza kudzivirira
Trips the upstream breakers when a breaker fails to open after a trip command.
I> ↑CLP
inotonhora mutoro wekuona basa (CLP)
Raises the settings for a while after a long-dead feeder is re-energised, avoiding nuisance trips.
I2f / I1fInrush
Inrush ikozvino yekuona basa
Recognises transformer inrush from the second harmonic and blocks false trips.
Id>ANSI 87
Kudzivirirwa kwakasiyana
Compares the currents into and out of the plant and clears faults inside the zone fast.
Software features
01Iyo ine simba uye nyore-kushandisa-software nharaunda yekumisikidza akasiyana mabasa
02Kugona kurekodha kusvika ku200 oscillographs, rwendo log
03Ine 4 regulatory mapoka
04Signal Routing software module yekugovera masiginecha ebasa kuti adzorere zvinopinda uye zvinobuda
05Kugona kuburitsa relay marongero muXRio fomati
Relay zvitupa
- Power Research Institute