Installed Breaker Ct Size Referred To By Third And Fourth Characters Of Trip Unit Catalog; Trip Unit Catalog Number Suffixes For Optional Functions; Microversatrip Pm Trip Unit Suffixes For Communication, Metering, And Relaying - GE MicroVersaTrip Plus Series User Manual

1. Introduction
Character
2
3
4
5
Table 2. Breaker frame size maximum CT mferred to by second
character of Trip Unit catalog number.
The third and fourth characters of the catalog
number indicate the CT that is actually installed in
the breaker, as listed in Table 3. The table also indi­
cates whether each CT is available with only RMS9C
T rip Units or with both types.
CT
Characters
01 150 A
02 200 A
03 225 A
04 400 A
06 600 A
08
800 A
10 1000 A
16 1 600 A
20 2000 A
25
2500 A
30 3000 A
32 3200 A
40 4000 A
50
5000 A
Table 3. Installed breaker CT size referred to by third and fourth
characters of Trip Unit catalog number.
The fifth character of the catalog number is the let­
ter L, which indicates that all Trip Units come with
long-time overcurrent protection. Additional letters
are appended to the catalog number to indicate
installed protective functions, as in Table 4 . These
suffixes are valid for both MicroVersaTrip Plus and
MicroVersaTrip PM style Trip Units. They are
appended from left to right in the order given.
Maximum
Allowable CT
2000 A
2500/3000/3200 A
4000 A
5000 A
Size
Trip Unit Series
RMS9C
both
RMS9C
both
RMS9C
both
both
both
both
both
both
RMS9C
both
RMS9C
Suff"IX Protective Function
s Short-time overcurrent protection
I Instantaneous overcurrent protection
H Fixed high-range instantaneous
K
Fixed high-range instantaneous
30S only)
G Ground fault
GD Defeatable ground fault (not UL
listed)
Z1 or Zone-selective interlock:
72. Z 1 - ground fault only
Z2 - ground fault and short time
Switchable instantaneous/short time
X
and ground fault
listed)
4.
Table Trip Unit catalog number suffixes for optional
MicroVersaTrip PM catalog numbers contain an
additional one- or two-letter suffix to indicate the
communication, metering, and relaying functions
installed, as shown in Table 5. MicroVersaTrip Plus
catalog numbers do not have this final suffix.
Suff"IX
(none) MicroVersaTrip Plus Trip Unit
PM Metering, relaying, and communication
M Metering and communication
p Relaying and communication
Table 5. MicroVersa Trip PM Trip Unit suffixes for
communication, metering, and relaying.
Finally, if the Trip Unit is ordered as a replacement,
an "R" suffix is appended to the catalog number.
For example, a Trip Unit with catalog number
B2 10LSIGZ 1PM has the following functions:
B2 - Trip Unit for Power Break II with maximum
CT of 2000 A
1 0 - breaker current sensor (CT) of 1 000 A
L - long-time overcurrent protection
S - short-time overcurrent protection
I - adjustable instantaneous protection
G - ground-fault protection
4
(AKR-
(AKR
only, not UL
functions.
Function