Easy-Start ES Instruction Manual
Pre-Installation
INSTALLATION
2-10
Application Considerations
Starting Time
The Easy-Start ES is designed to operate at
500% of its current calibration setting, (set by the
DIP switches) for 20 seconds. If longer starting
times are used, the Easy-Start ES will trip due to
the overcurrent protection feature; (see Figure
3-1).
If longer starting times are required, the extended
start-time option must be purchased. This option
inhibits the inverse-time current trip during the
extended start time.
Notice
-
Consult Motor Manufacturer for Effect
of Longer Starting Time on Motor Life.
Suppose we have a 150 HP, 180 FLA motor
which is driving a load with 120 second start time
and the current limit is set for 500%, i.e. 900
amps. From Figure 4-1, Model ES180 will supply
900 amps but only for 40 seconds; therefore a
larger unit such as ES260 is required. Using
Figure 4-1, we see that ES260 will handle 900
amps for almost 200 seconds. So ES260 with
extended start time option can be used for this
application.
Circuit Breakers
The Easy-Start ES is capable of 500% current
limit for 20 seconds. The circuit breakers, or
protective devices used upstream, should be
sized so that they can handle the maximum
current for 20 seconds, or longer where extended
start times are required.
Automatic Reset
Automatic reset normally is not used with the
Easy-Start ES due to its 5 cycle ride-through
capability. The control is wired for manual reset
as standard.
Model Number ES045
Starts-Per-Hour
Curr.
Starting
Start
Percent Off-Time
Limit
Current
Time
AC Amps
Sec.
0%
10%
20%
30%
2
180
240
360
480
250%
113
5
80
120
160
200
10
50
70
85
100
20
20
30
40
50
2
150
220
300
360
300%
135
5
60
100
130
150
10
40
50
60
70
20
16
25
30
35
2
100
160
200
240
400%
180
5
40
60
80
100
10
20
30
40
50
20
10
16
20
24
2
80
120
150
180
500%
225
5
30
40
50
60
10
12
16
20
24
20
1
4
8
12
Starts-Per-Hour ES045
Table 2-1
Model Number ES070
Starts-Per-Hour
Curr.
Starting
Start
Percent Off-Time
Limit
Current
Time
AC Amps
Sec.
0%
10%
20%
30%
2
180
240
320
480
250%
175
5
80
120
150
180
10
40
60
70
80
20
20
30
35
45
2
120
200
240
320
300%
210
5
40
60
100
120
10
20
30
40
60
20
8
16
20
30
2
60
120
160
200
400%
280
5
30
40
60
80
10
12
20
30
40
20
4
8
16
20
2
40
80
120
140
500%
350
5
12
24
40
60
10
4
8
16
20
20
-
4
8
12
Starts-Per-Hour ES070
Table 2-2
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