Eaton EMR-3MP0 - Page 167

Underload Pickup based on a multiplier of FLA
JAM pickup based on a multipler of FLA
t [s]
Underload delay time
JAM Delay Time
JAM function, not
active during start
delay function.
Underload Trip
function, is not
active during start
delay function.
Underload Pickup based on a multiplier of FLA
JAM pickup based on a multipler of FLA
multiples of FLA
1
2
4
6
8
10
20
50
100
200
300
500
1000
10.5 2 4 6 810 20 100
Fig. 43: Underload and JAM Trip Function
These would be represented by two such vertical lines, both below the normal load
current. Be sure to set the alarm level above the trip level. Both trips and alarms are held
o󰊍 by the start delay. Each has its own run or pickup delay. Use the start delay to block
tripping until the load stabilizes after a start. Use run delays to avoid nuisance alarms or
trips for load transients.
167www.eaton.comEMR-3MP0
4 Protective Elements
4.7 37 – Underload Module