U<ANSI 27
Undervoltage laka invenna (ANSI 27) 1.1.
Trips when the voltage falls below the setting.
Protection relay
AMR relay a ni
- A tul angin current leh voltage input te
- A tul angin digital input leh output
- Touch screen lian tak a ni
- RS232 leh RS485 port a awm bawk
- IEC 61850 inbiakpawhna protocol tanpui
IEC 61850
communication protocol
RS232 · RS485
serial ports
Touch
large touch screen
Invenna hnathawh te
U>ANSI 59
Overvoltage laka invenna (ANSI 59) 1.1.
Trips when the voltage rises above the setting.
I>> / I>ANSI 50/51
Non-directional overcurrent laka invenna (ANSI 50-51) a ni.
Instantaneous (50) and IDMT time-delayed (51) tripping on overcurrent and short circuit.
IE>> / IE>ANSI 50N/51N
Non-directional grounding hmanga venhimna (ANSI 50N-51N) hmanga siam a ni.
Instantaneous and time-delayed protection against residual current and phase-to-earth faults.
I> →ANSI 67
Directional overcurrent laka invenna (ANSI 67-67 TOC) a ni.
Overcurrent that checks the power direction, operating only for forward or reverse faults.
IE> →ANSI 67N
Directional Grounding hmanga venhimna (ANSI 67N-67N TOC) hmanga siam a ni.
Directional earth fault, for ring networks and parallel feeders.
I2>ANSI 46
Negative component overcurrent laka invenna a ni
Detects unbalance, broken conductors and single phasing from the negative-sequence current.
θ>ANSI 49
Overload laka invenna (ANSI 49) 1.1.
A thermal model of the plant that trips before a cable, transformer or motor overheats.
CBFANSI 50BF
Key chhiat laka invenna (ANSI 50BF) .
Trips the upstream breakers when a breaker fails to open after a trip command.
I> ↑CLP
cold load hriat theihna hnathawh (CLP) .
Raises the settings for a while after a long-dead feeder is re-energised, avoiding nuisance trips.
I2f / I1fInrush
Inrush current hriat theihna function a ni
Recognises transformer inrush from the second harmonic and blocks false trips.
Id>ANSI 87
Differential laka invenna (ANSI 87) 1.1.
Compares the currents into and out of the plant and clears faults inside the zone fast.
Software feature hrang hrang a awm
01Function hrang hrang siamna tur software environment chak tak leh hman awlsam tak a nei a
02Oscillograph 200 thleng record theihna, trip log
03Regulatory group 4 a nei a
04Signal Routing software module hmanga relay input leh output-a function signal pekna tur
05XRio format-a relay settings output theihna
Relay certificate pek a ni
- Power Research Institute a ni