U<ANSI 27
Parenga ngaohiko raro
Trips when the voltage falls below the setting.
Ngā relay tiaki
AMR Rere
- Ko nga whakaurunga o naianei me nga ngaohiko ina hiahiatia
- Ko te whakauru me te whakaputanga mamati ina hiahiatia
- Mata pa nui
- RS232 me RS485 tauranga
- Tautoko mo te kawa korero IEC 61850
IEC 61850
communication protocol
RS232 · RS485
serial ports
Touch
large touch screen
Nga mahi tiaki
U>ANSI 59
Parenga ngaohiko
Trips when the voltage rises above the setting.
I>> / I>ANSI 50/51
Parenga-a-ringa-a-roto
Instantaneous (50) and IDMT time-delayed (51) tripping on overcurrent and short circuit.
IE>> / IE>ANSI 50N/51N
Parenga papa-kore
Instantaneous and time-delayed protection against residual current and phase-to-earth faults.
I> →ANSI 67
Te whakamarutanga i te aue nui
Overcurrent that checks the power direction, operating only for forward or reverse faults.
IE> →ANSI 67N
Parenga Papa Whakapapa
Directional earth fault, for ring networks and parallel feeders.
I2>ANSI 46
Waahanga kino te whakamarumaru i te aue
Detects unbalance, broken conductors and single phasing from the negative-sequence current.
θ>ANSI 49
Parenga taumaha
A thermal model of the plant that trips before a cable, transformer or motor overheats.
CBFANSI 50BF
Parenga rahunga matua
Trips the upstream breakers when a breaker fails to open after a trip command.
I> ↑CLP
mahi kimi uta maeke (CLP)
Raises the settings for a while after a long-dead feeder is re-energised, avoiding nuisance trips.
I2f / I1fInrush
Taumahi rapunga o naianei
Recognises transformer inrush from the second harmonic and blocks false trips.
Id>ANSI 87
Parenga rereke
Compares the currents into and out of the plant and clears faults inside the zone fast.
Ngā āhuatanga pūmanawa
01He taiao rorohiko kaha me te ngawari ki te whakamahi mo te whakarite i nga momo mahi
02Te kaha ki te tuhi ki te 200 oscillographs, te raarangi haerenga
03E 4 nga roopu whakahaere
04Kōwae pūmanawa Tohu Ararere mo te tohu tohu mahi hei tuku i nga whakaurunga me nga putanga
05Te kaha ki te whakaputa i nga tautuhinga relay ki te whakatakotoranga XRio
Tiwhikete rei
- Te Whare Rangahau Mana