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Universal Remote Control MX-880Z - SPECS SHEET Technické informace Strana 176

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™
© 2000–2014 Schneider Electric
All Rights Reserved
Masterpact™ NT and NW Universal Power Circuit Breakers
Trip Curves
176
05/2014
Figure 172: Micrologic 2.0A Trip Unit
1.5
1
1
CURRENT IN MULTIPLES OF Ir (Ir = LONG-TIME SETTING x In)
CURRENT IN MULTIPLES OF Ir
(Ir = LONG-TIME SETTING x In)
.5
.6
.7
.8
.9
1.5
2
3
4
5
6
7
8
9
10
15
20
30
40
50
60
70
80
90
100
.5
.6
.7
.8
.9
2
3
4
5
6
7
8
9
10
15
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
1500
2000
3000
4000
6000
7000
8000
9000
5000
10000
.005
.006
.007
.008
.009
.01
.015
.02
.03
.04
.05
.06
.07
.08
.09
.1
.005
.006
.007
.008
.009
.01
.015
.02
.03
.04
.05
.06
.07
.08
.09
.1
.15
.2
.3
.4
.5
.6
.7
.8
.9
1
.15
.2
.3
.4
.5
.6
.7
.8
.9
1
1.5
2
3
4
5
6
7
8
9
10
1.5
2
3
4
5
6
7
8
9
10
15
20
30
40
50
60
70
80
90
100
15
20
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100
150
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600
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800
900
1000
1500
2000
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4000
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6000
7000
8000
9000
10000
TIME IN SECONDS
CYCLE
2
1
1 CYCLE
150
24
20
.5
16
12
8
2.51.5 2
4
35
6
8
10
4
2
1
16
LONG-TIME PICKUP
x In = Ir
LONG-TIME
DELAY BANDS
SECONDS AT 6 x Ir
SHORT-TIME
PICKUP
x Ir
24
Curve No. 0613TC0009
Drawing No. B48095-613-09
Micrologic 2.0A Trip Unit
Characteristic Trip Curve No. 613-9
Long-Time Pickup and Delay
Short-Time Pickup with No Delay
The time-current curve information is to be used for
application and coordination purposes only.
Curves apply from -30°C to +60°C (-22°F to +140°F)
ambient temperature.
NOTE:
1. There is a thermal-imaging effect that can act to
shorten the long-time delay. The thermal-imaging
effect comes into play if a current above the long-time
delay pickup value exists for a time and then is cleared
by the tripping of a downstream device or the circuit
breaker itself. A subsequent overload will cause the
circuit breaker to trip in a shorter time than normal. The
amount of time delay reduction is inverse to the
amount of time that has elapsed since the previous
overload. Approximately twenty minutes is required
between overloads to completely reset thermal-
imaging.
2. The end of the curve is determined by the short-time
setting.
3. Total clearing times shown include the response times
of the trip unit, the circuit breaker opening, and the
extinction of current.
4. Overload indicator illuminates at 100%.
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