hager h3+ - Lsni Trip Units

136LE005550A
Description of the h3+ communication system
2.1 h3+ electronic trip units
2.1.1
LSnI trip units
t (s)
tr
tsd
I (A)
lr lilsd
LSnI
- Configuration using adjustment dials.
- Signalling the status of the trip unit via LED (Ready).
- Signalling the overload alarm via LED (>Ir).
- Possible adjustment of the threshold for the long time delay Ir and the short
time delay current Isd. The tr and tsd parameters and the instantaneous trip
parameters are fixed.
- Possible adjustment of the neutral pole protection on 4-pole versions
(neutral positioned on the left).
40 A 100 A 160 A 250 A
P160 X X X -
P250 X X X X
L - Long time delay protection
Ir (tripping between 1.05 and 1.20 x Ir)
Ir1 (A) In = 40 A 16 - 18 - 20 - 22 - 25 - 28 - 32 - 34 - 37 - 40
Ir1 (A) In = 100 A 40 - 45 - 50 - 57 - 63 - 72 - 80 - 87 - 93 - 100
Ir1 (A) In = 160 A 63 - 70 - 80 - 90 - 100 - 110 - 125 - 135 - 150 - 160
Ir1 (A) In = 250 A 90 - 100 - 110 - 125 - 140 - 160 - 180 - 200 - 225 - 250
fine adjustment Ir2 0.91 - 0.92 - 0.93 - 0.94 - 0.95 - 0.96 - 0.97 - 0.98 - 0.99 - 1
tr (accuracy -21%/+1%)
tr (s) at 6 x Ir 5 (fixed)
S - Short time delay protection
Isd (accuracy -10/+10%)
Isd adjustment = Ir x … OFF - 1.5 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 10
tsd (ms) at 10 x Ir 100 (fixed)
non-tripping time (ms) 80
maximum cut-o time (ms) 150
I - Instantaneous protection
Ii (accuracy +15/-15%) 15 x In (fixed) 11 x In (fixed)
time delay (ms) fixed
non-tripping time (ms) 10
maximum cut-o time (ms) 50
Neutral adjustment (4P only)
neutral protection (Ir, Isd) x … OFF - 50% - 100%
neutral protection Ii Same as phases
time delay Same as tr, tsd and instantaneous