Woodward MRM4, Manual

Page: 437 / 460

Tolerances
JAM Protection: JAM [x] Tolerance
Pickup ±1.5% of the setting value resp. 1% In
Resetting ratio
97% or 0.5% x In
t DEFT
±1% resp. ±10 ms
Operating time <65 ms
Release time <45 ms
Undercurrent Protection: I< [x] Tolerance
I< ±1.5% of the setting value resp. 1% In
Resetting ratio 97% or 0.5% x In
t DEFT
±1% resp. ±10 ms
Operating time <65 ms
Release time <45 ms
Mechanical Load Shedding MLS Tolerance
Pickup Threshold ±1.5% of the setting value resp. 1% In
Resetting ratio 97% or 0.5% x In
t-Pickup Delay DEFT
±1% resp. ±10 ms
Dropout Threshold ±1.5% of the setting value resp. 1% In
Resetting ratio 97% or 0.5% x In
t-Drop Delay DEFT
±1% resp. ±10 ms
Operating time <65 ms
Release time <45 ms
Circuit Breaker Failure Protection CBF Tolerance
I-CBF> ±1.5% of the setting value resp.1% In
resetting ratio 0.5% x In
t-CBF ±1% resp. ±10 ms
Operating time
Starting from I higher than 1.3 x I-CBF>
<40 ms
Release time <40 ms
EN MRM4 01/11 Page 437