4.2 Determination of the FEM Classification
100%
73%
40%
47%
10%
20%
40%
100 50
100%
17 50
17 17
100%
50 50
100%
90 10
80%
Load%
Operating time% Operating time%Operating time%
Load% Load% Load%
Operating time%
40
Load
Spectrum
State of Loading Cubic
Mean
Value
Average Daily
Operating Time
in hours
Calculated Total
Operating Time
in hours
Light
Occasional full load;
Usually light load;
Small fixed load
k 0.5
2
3,200
Medium
Occasional full load;
Usually light load;
Average fixed load
0.5
k
0.63
1
1,600
Heavy
Repetitive full load;
Usually average load;
Heavy fixed load
0.63
k
0.8
800
Very Heavy
Usually almost full
load; Very heavy
fixed load
0.8 k
1
400
0.5
0.25
R
Ar
L
1
2
3
4
5
Green
Yellow
White
Red
Input
Motor
Rotor
Bridge
Rectifi
er
Motor
Stat
or
1
2
3
4
5
Up
Down
Contro
l Cir
cuit
Push button switch
Resistor
Fuse
Earthing
ACV
Black
4.1 Rated Percentage Duty Cycle (%ED)
Do not exceed the rated intermittent period.
WARNING
The service life of the product is significantly dependent on the frequency at
which it is operated. To ensure long service life, operate the winch within its
rated percentage duty cycle (%ED). The rated percentage duty cycle (%ED)
is expressed by the duty factor (%ED) obtained at therated voltage and
percentage duty cycle(%ED)=
lifting time+lowering time
lifting time+idle time+lowering time+idle time
The maximum startup frequency represents the frequency of startup
operations per hours, including inching operations. The rated speed, which
indicates the average speed of winding up or down at a rated load. A cycle is
limited at 10 minutes at most.
%
4. Working method
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