GE Industrial Solutions WavePro Low-Voltage Power Circuit Breakers - Manual (Page 10)

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
2
• Defeatable ground fault, with or without I
2
T
• Zone-selective interlock, with ground fault only or
with both ground fault and short-time protection
• Switchable short time and instantaneous with ground
fault
Additional optional functions available only with
MicroVersaTrip PM Trip Units are as follows:
• Available configurations
– Communication and metering
– Communication, metering, and protective
relaying
• Remote communication with POWER LEADER™
communications network (commnet)
• Metering functions
– Voltage (V)
– Energy (kWh/MWh/GWh)
– Total real power (kW/MW)
– Total apparent power (kVA/MVA)
– Demand power (kW/MW)
– Peak demand power (kW/MW)
– Frequency (Hz)
• Protective relaying
– Undervoltage
– Overvoltage
– Voltage unbalance
– Current unbalance
– Power reversal
NOTE: MicroVersaTrip PM style Trip Units require
external +24 Vdc control power.
NOTE: Le déclencheur de type MicroVersaTrip PM
necessite l’utilisation d’une alimentation extérieure 24
Vcc.
1-3 Trip Unit Catalog Numbers
A simple catalog-numbering system defines all of the stan-
dard and optional Trip Unit functions for each of the two
series of Trip Units. K332LSIGDZ1R is an example of a
valid catalog number.
The first character of the catalog number, K, defines the
Trip Unit as configured for a WavePro circuit breaker.
The second character of the catalog number indicates the
breaker frame size, as listed in Table 1.
Code
Breaker
Frame Size
8 800 A
1 1600 A
2 2000 A
3 3200 A
4 4000 A
5 5000 A
Table 1. Breaker frame size referred to by the second character of the
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 2.
Code CT Size
01 150 A
04 400 A
08 800 A
16 1600 A
20 2000 A
32 3200 A
40 4000 A
50 5000 A
Table 2. 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 letter 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 func-
tions, as in Table 3. These suffixes are valid for both
MicroVersaTrip Plus and MicroVersaTrip PM Trip Units.
They are appended from left to right in the order given.
Suffix Protective Function
S Short-time overcurrent protection
I Instantaneous overcurrent protection
G Ground fault
GD Defeatable ground fault (not UL listed)
Z1 or
Z2
Zone-selective interlock:
Z1 – ground fault only
Z2 -– ground fault and short time
X Switchable instantaneous/short time and ground
fault (not UL listed)
Table 3. Trip Unit catalog number suffixes for optional functions.
MicroVersaTrip PM catalog numbers contain an addi-
tional one- or two-letter suffix to indicate the communica-
tion, metering, and relaying functions installed, as shown