Woodward highprotec MRI4, User Manual

Page: 436 / 727

Protective Elements
Parameter Description Setting range Default Menu path
Char Characteristic DEFT,
IEC NINV,
IEC VINV,
IEC EINV,
IEC LINV,
RINV,
ANSI MINV,
ANSI VINV,
ANSI EINV,
Therm Flat,
IT,
I2T,
I4T
DEFT [Protection
Para
/<1..4>
/I-Prot
/I[1]]
t Tripping delay
Only available if: Characteristic = DEFT
0.00 - 300.00s 1.00s [Protection
Para
/<1..4>
/I-Prot
/I[1]]
tchar Time multiplier/tripping characteristic factor.
The setting range depends on the selected
tripping curve.
Only available if: Characteristic = INV Or
Characteristic = Therm Flat Or
Characteristic = IT Or Characteristic = I2T
Or Characteristic = I4T
0.02 - 20.00 1 [Protection
Para
/<1..4>
/I-Prot
/I[1]]
Reset Mode Reset Mode
Only available if: Characteristic = INV Or
Characteristic = Therm Flat Or
Characteristic = IT Or Characteristic = I2T
Or Characteristic = I4T
instantaneous,
delayed,
calculated
instantaneous [Protection
Para
/<1..4>
/I-Prot
/I[1]]
t-reset delay Reset delay for intermittent phase failures
(INV characteristics only)
Available if:Reset Mode = delayed
0.00 - 60.00s 0s [Protection
Para
/<1..4>
/I-Prot
/I[1]]
IH2 Blo Blocking the trip command, if an inrush is
detected.
inactive,
active
inactive [Protection
Para
/<1..4>
/I-Prot
/I[1]]
436 MRI4 DOK-HB-MRI4-2E