Ground-Fault Display; Protective-Relay Fault Display; Shunt Trip And Undervoltage Release Trip Displays (Rms9D Series Trip Units Only); Clearing The Trip Information - GE MicroVersaTrip Plus Series User Manual

4. Status Mode

Ground-Fault Display

When a ground-fault trip occurs, the display illus­
trated in Figure 62 appears. The fault current is dis­
played in units of the breaker CT sensor rating.
xCI',
Multiply the sensor rating of the breaker by the dis­
played fault current multiplier to obtain the ground­
fault current at trip.
:J Ll
.L I
coo
Figure 62.

Trip Unit status display for ground-fault trip.

Protective-Relay Fault Display

After a protective-relay trip, the display indicates
FAULT with a target for the type of relay that initi ated
the trip. This is illustrated in Figure 63 for an
overvoltage trip. The targets for the five protective
relays are listed in Table 18.
V >
Figure 63.

Trip Unit status display for protective-relay trip.

Code Protective Relay
llV Voltage unbalance
Ill Current unbalance
Undervoltage
V<
V>
Overvoltage
�l
Power reversal
Table 18.

Trip Unit display targets for protective relays.

Shunt Trip and Undervoltage Release Trip
Displays (RMS9D Series Trip Units Only)
When a Power Break ®II breaker trips due to the
Shunt Trip, Shunt Trip with Lockout, or
Undervoltage Release, the display indicates the trip
with a flashing target, as illustrated in Figure 64. The
indications
Undervoltage Release trips, respec tively. Note that
the
FAULT
ST A TUS
originated external to the breaker and may not
represent a true fault condition.
xCT
FAULT
Figure

Clearing the Trip Information

Since trip information is stored in nonvolatile mem­
ory, the Trip Unit continues displaying the trip
information until it is manually cleared or a new trip
ST A TUS
occurs. After the trip information has been recorded
or reviewed, it can be cleared with the keypad. With
the Trip Unit in Status mode, hold down the
key and press the
FAULT
then cleared and the display reverts to
in Figure 56.

Trip Operations Counter Display

Trip operations counters record the total number of
overcurrent trips. To review any of the trip opera­
tions counters while in Status mode, press the
key until the desired count appears. Figure 65
illustrates a typical trip operations counter display.
This example indicates that there have been three
long-time trips on this breaker since the counter was
last reset.
32
ST and UVR appear for Shunt Trip and
segment does not display, since the trip
64.

Trip Unit status display for Undervoltage Release trip.

key. The trip information is
SELECT
ST ATUS
UVR
VALU E
as
STATUS O K,
SELECT