ABB MMCO-2 - Page 5

I
.
L
.
41
-
121.2
CHARACTERISTICS
,
cont
’
d
.
Make
:
30
Amp
at
250
Vdc
for
1
sec
(
one
shot
)
Break
:
50
W
Resistive
up
to
250
Vdc
Contact
Rating
One
input
requires
battery voltage
to
enable
phase
tripping
.
Second
input requires
battery voltage
to
enable
ground tripping
.
Directional control
can
be
enabled
or
bypassed
on
any
combination
of
the
four
Trip
Units
(
<
J
>
-
TC
,
<
|
)
-
!
NST
,
GRND
-
TOC
,
GRND
-
INST
)
via
settings
with
this
option
.
Directional
Control
(
Option
)
Input
which
causes
reset
of
sealed
-
in
trip
LED
when
battery voltage
is
applied
to
it
.
Remote
Reset
(
Option
)
Targets
are
dated and time
-
tagged
.
Current
date and time
can
also be read
.
(
Uses
lithium
battery
backup
.
)
Real
-
time
Clock
(
Option
)
DC
Power
Drain
8
Watts
max
.
10
Watts
max
.
Operating
Voltage
38
-
140
Vdc
200
-
280
Vdc
Nominal
Voltage
DC
Power
Supply
48
/
125
Vdc
250
Vdc
1
Second
Rating
200
Amps
100
Amps
OHMIC
Burden
Continuous
Rating
16
Amps
5
Amps
ct
Type
5
A
ct
1
Act
AC
Ratings
.
005
O
.
025 0
.
Table
3
:
IEC
(
CO
)
TYPE
TIME
CURVE
CALIBRATION
POINTS
Table
2
:
USA
(
CO
)
TYPE
TIME
CURVE
CALIBRATION
POINTS
OPERATING
TIME
CURVE
TYPE
TIME
CURRENT
APPLIED
TIMES
P
/
U VALUE
OPERATING
TIME
CURVE
TYPE
TIME
CURRENT
APPLIED
TIMES
P
/
U
VALUE
DIAL
DIAL
IN
IN
SECONDS
SECONDS
A
30
5
x
2.038
1.080
MMCO
-
2
5
X
0.352
0.188
30
20
x
20
X
B
5
X
1.607
0.338
5
X
14.693
12.186
30
MMCO
-
5
30
20
X
10
X
C
5
X
5
X
30
1.587
0.095
MMCO
-
6
1.201
1.025
30
20
X
10
X
NOTE
:
10
milliseconds
pickup
time
for
the
TD
relay
must
be
added
to
the above
operate
times
for
total
operate
time
of
the
MMCO
relay
.
5
X
MMCO
-
7
30
1.585
0.859 20
X
MMCO
-
8
5
X
1.979
0.872
30
20
X
MMCO
-
9
5
X
30
1.331
0.572 20
X
MMCO
-
11
5
X
1.226
0.195
30
20
X
NOTE
:
10
msec
pickup
time
,
for
the
TD
relay
,
must
be
added
to
the above
operate
times
for
total
MMCO
relay
operate
time
.
5
Courtesy of NationalSwitchgear.com