Introduction
4
1.4
Front Panel Interface
Each SB Energy-Comm trip unit features a rating plug (purchased
separately), front panel keypad, liquid crystal display (LCD), and a
EIA-232 communications port for use with a PC or laptop. The trip
unit’s integral front panel keypad and LCD provide the user with
direct access to device data and settings. Through detailed
menus and graphical displays, the user may view and modify the
system configuration and communication parameters, as well as
protective and metering function settings. Both real-time and
accumulated data are available, in addition to current and voltage
waveforms. The user may also view information in the trip log
associated with the five most recent trips.
1.4.1
Keypad
The front panel provides the user with four keypad buttons for
easy touch-control interface which uses no switches or knobs for
making adjustments to this trip unit. The keypad buttons permit
navigation through the displays to allow the local programming of
settings and viewing of those settings.
The Up
and Down
arrow keys are used for scrolling
through a menu of choices displayed on the LCD. The Enter
key is used to select a choice or move between two selections.
The Escape
key is used to exit from a given menu to the next
higher level.
Table 1.2
UL 489 Symmetrical RMS Amperes Interrupting Rating (kA)
Optional Ratings and Application Voltage
Breaker Frame Size
1200A
2000A
3200A
5000A
Alternate A.I.R. (kA): Blue Label “SBA”
@ 240V AC
65
85
N/A
N/A
@ 480V AC
65
65
N/A
N/A
@ 600V AC
42
50
N/A
N/A
Standard A.I.R. (kA): Black Label “SBS”
@ 240V AC
100
100
150
150
@ 480V AC
100
100
100
100
@ 600V AC
50
65
85
85
High A.I.R. (kA): Red Label “SBH”
@ 240V AC
200
200
200
200
@ 480V AC
150
150
150
150
@ 600V AC
100
100
100
100
Short Time Delay Rating (kA) t=0.5 sec.
25
35
50
65
Table 1.3
IEC 947-2 Rating–Standard SBS
Interrupting
Ratings
Symmetrical
RMS
Kiloamperes
50/60 Hz.
AC Voltage
Breaker Frame Size
1200A
2000A
3200A
5000A
415
I
cu
I
cs
I
cw
100
100
25
100
100
35
100
100
50
100kA
100kA
65kA
690
I
cu
I
cs
I
cw
65
65
25
65
65
35
65
65
50
65kA
65kA
65kA
