Schneider Electric 3.0A Manual De Usuario
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
48049-136-05
Section 1—General Information
Rev. 01, 07/2012
© 1999–2012 Schneider Electric All Rights Reserved
12-EN
ENGLISH
Instantaneous Protection
Instantaneous protection protects equipment
against short circuits with no intentional time
delay.
against short circuits with no intentional time
delay.
•
Instantaneous protection (Ii) (A) is standard
on the 3.0A, 5.0A and 6.0A trip units.
on the 3.0A, 5.0A and 6.0A trip units.
•
Instantaneous protection on 2.0A trip units is
achieved by using short-time protection (Isd)
with the short-time delay factory set to 0
(zero).
achieved by using short-time protection (Isd)
with the short-time delay factory set to 0
(zero).
•
Instantaneous protection on the 3.0A, 5.0A
and 6.0A trip units is based on the circuit
breaker sensor rating (In).
and 6.0A trip units is based on the circuit
breaker sensor rating (In).
•
Instantaneous protection on the 2.0A trip unit
is based on the long-time pickup setting (Ir).
is based on the long-time pickup setting (Ir).
•
Circuit breaker open command is issued as
soon as threshold current is exceeded.
soon as threshold current is exceeded.
•
Instantaneous protection uses peak current
measurement.
measurement.
•
When instantaneous protection switch is set
to off, the instantaneous protection is
disabled.
to off, the instantaneous protection is
disabled.
Figure 9:
Instantaneous Protection Switches
Table 3:
Micrologic Instantaneous Values
Setting
Interruption Current
2.0A
Isd (= Ir x..)
1.5
2
2.5
3
4
5
6
8
10
3.0A
Ii (= In x..)
1.5
2
3
4
5
6
8
10
12
5.0A
Ii (= In x..)
2
3
4
6
8
10
12
15
off
6.0A
Ii (= In x..)
2
3
4
6
8
10
12
15
off
Ii = UL and ANSI instantaneous
Isd = IEC instantaneous (short-time with zero delay)
In = sensor rating
Ir = long-time pickup
Isd = IEC instantaneous (short-time with zero delay)
In = sensor rating
Ir = long-time pickup
Micrologic 6.0A Trip Unit
Micrologic 5.0A Trip Unit
x Ir
2
2.5
3
4
5
6
8
10
1.5
setting
Isd
instantaneous
long time
alarm
tr
(s)
.4
.5
.6
.7
.8
.9
.95
.98
.98
1
Ir
x In
.5
1
2
4
8
12
16
20
20
@ 6 Ir
24
06134243
x In
2
3
4
5
6
8
10
12
1.5
setting
Ii
instantaneous
long time
alarm
tr
(s)
.4
.5
.6
.7
.8
.9
.95
.98
.98
1
Ir
x In
.5
1
2
4
8
12
16
20
20
@ 6 Ir
24
06133203
.4
.5
.6
.7
.8
.9
.95
.98
.98
1
delay
short time
I i
tsd
(s)
on
I
2
t
.
2
.
3
.
4
.
4
.
1
.
2
.
3
.
1
0
off
instantaneous
long time
alarm
Ir
x In
.5
1
2
4
8
12
16
20
20
tr
(s)
@ 6 Ir
24
setting
x Ir
2
2.5
3
4
5
6
8
10
Isd
1.5
x In
3
4
6
8
10
12
15
off
2
06133204
.4
.5
.6
.7
.8
.9
.95
.98
.98
1
delay
short time
I i
tsd
(s)
on
I
2
t
.
2
.
3
.
4
.
4
.
1
.
2
.
3
.
1
0
off
instantaneous
long time
alarm
Ir
x In
ground fault
B
C
D
E
F
G
H
H
J
Ig
tg
(s)
on
I
2
t
.
2
.
3
.
4
.
4
.
1
.
2
.
3
.
1
0
off
A
.5
1
2
4
8
12
16
20
20
tr
(s)
@ 6 Ir
24
setting
x Ir
2
2.5
3
4
5
6
8
8
10
Isd
1.5
x In
3
4
5
8
10
12
15
off
2
test
06133351
A
A
A
A
Micrologic 2.0A Trip Unit
Micrologic 3.0A Trip Unit