4 PERFORMANCE OF VOLTAGE PROTECTION FUNCTIONS
4.1 UNDERVOLTAGE PROTECTION
Pick-up (IDMT and DT) Setting +/- 5%
Drop-off (IDMT and DT) 1.02 x Setting +/-5%
IDMT operate +/- 5% or 50 ms, whichever is greater
DT operate +/- 2% or 50 ms, whichever is greater
DT reset < 75 ms
Repeatability < 1%
4.2 OVERVOLTAGE PROTECTION
Pick-up (IDMT and DT) Setting +/- 5%
Drop-off (IDMT and DT) 0.98 x Setting +/-5%
IDMT operate +/- 5% or 50 ms, whichever is greater
DT operate +/- 2% or 50 ms, whichever is greater
DT reset < 75 ms
Repeatability < 1%
4.3 RESIDUAL OVERVOLTAGE PROTECTION
IDMT pick-up 1.05 x Setting +/- 5%
DT pick-up Setting +/- 5%
Drop-off (IDMT and DT) 0.95 x Setting +/-5%
IDMT operate +/- 5% or 65 ms, whichever is greater
DT operate +/- 2% or 60 ms or whichever is greater
DT reset < 35 ms
Repeatability < 10%
4.4 NEGATIVE SEQUENCE VOLTAGE PROTECTION
Pick-up Setting +/- 5%
Drop-off 0.95 x Setting +/-5%
DT operate +/- 2% or 50 ms, whichever is greater
Repeatability < 5%
P14x Chapter 23 - Technical Specifications
P14xEd1-TM-EN-1 541