GE Industrial Solutions microEntelliGuard Trip Unit User Manual

GE Energy

Industrial Solutions

GEH-703 Installation Instructions

microEntelliGuard™ Trip Unit

For Spectra® RMS Molded-Case Circuit Breakers

TM

with microEntelliGuard

Trip Units

Before starting, the trip unit must be energized. Energize
the trip unit using any one of the following means:

• EntelliGuard
GTUTK20)

• Portable Battery Pack (Cat. No. TVPBP) in conjunction
with a Battery Pack Adapter Cable (Cat. No. TVPBPACC)

• 24Vdc control power (requires that the breaker be
connected to control power source via the distribution
cable system)

• Self power- the trip unit will “self power” when carrying
at least 20% of current sensors’ rated current (either
from actual load or with high current test set).

When energized, the trip unit’s Main Menu will
illuminate in the LCD as shown at left.

CAUTION: Changing protective functions or protective
relay set points under load conditions may result in a
breaker trip. Follow proper safety procedures.

TM

Trip Unit Digital Test Kit (Cat. No.

Overview

These instructions are intended to familiarize the user
with the various display screens and setup parameters
associated with the microEntelliGuard
using the trip unit’s 5-button keypad. For complete
microEntelliGuard
refer to GE user’s manual GEH-702.

CAUTION: Trip unit parameters should only be adjusted
to values specified by a professional engineer.

TM

Trip Unit programming instructions,

TM

Trip Unit

SETUP - this mode is used to establish the trip unit’s
overcurrent (LSIG) and protective relay parameters.

a. From the Main Menu, press the UP or DOWN button

until SETUP is highlighted.
b. Press the FORWARD button to begin the setup process.
c. The first setup screen to appear is LANGUAGE. To

change the parameter value, press either the UP or

DOWN button to scroll through available choices.

The parameter will flash on the LCD to indicate that

the value has been changed.
d. To save changes, you must press the ENTER button

before advancing to the next parameter screen.
e. To advance to the next parameter screen, press the

FORWARD button (in this case, the next parameter

following LANGUAGE is LONG TIME). When more

than one parameter/value exists on a setup screen,

the first value will be automatically highlighted. Use
the UP or DOWN buttons to change the parameter
values. Remember to press the ENTER button
to save changes before advancing to the next
parameter screen.

f. Repeat this process until all parameters/values have

been adjusted and saved.

g. After scrolling through all available setup parameters,

the LCD display will return to the Main Menu. Pressing
and holding the BACK button also returns the LCD
display to the Main Menu.

IMPORTANT: The last parameters in the SETUP menu
are DATE and TIME. These parameter values are used in
the EVENTS screen to date/time stamp circuit breaker
trip events.

METER – this mode is used to monitor current (and
other parameters).

a. From the Main Menu, press the UP or DOWN button

until METER is highlighted.

b. Press the FORWARD button to advance to the first

metering screen. The first parameter displayed is
CURRENT. The LCD displays current in amps on
phases A, B, and C.

c. Trip units optioned with advanced metering have

additional parameters that can be displayed. Press
the FORWARD button to advance to the next display
screen or to the Main Menu.

STATUS – this mode is used to view protective
parameter settings, errors and software information.

a. From the Main Menu, press the UP or DOWN button

until STATUS is highlighted.

b. Press the FORWARD button to advance to the first

status screen. This screen displays the overcurrent
protective settings that are programmed into the
trip unit.

c. Press the FORWARD button to advance to the ERROR

STATUS screen. This screen is normally blank. If the
trip unit detects an error, it will be displayed (refer to
GEH-702 for error codes).

d. Press the FORWARD button to advance to the

VERSION screen. This screen displays the trip
unit’s software revision level, build date, and
communications baud rate information.

e. Press the FORWARD button to advance to the Main

Menu.

EVENTS – this mode is used to view trip events. An event
log stores up to ten individual trip events (EVENT 1 is
always the most recent trip event and EVENT 10 is the
oldest trip event).

a. From the Main Menu, press the UP or DOWN button

until EVENTS is highlighted.

b. Press the FORWARD button to advance to EVENT 1.

The display indicates the trip type (LSIG), phase (ABC)
and level of fault that caused the trip.

c. Press the FORWARD button to advance to the next

event (up to EVENT 10).

d. Press the FORWARD button to advance to the Main

Menu.

NOTE: The event log can be cleared of all trip events by
simultaneously pressing the UP and DOWN buttons.

Spectra and MicroVersaTrip are registered trademarks and EntelliGuard and
microEntelliGuard are trademarks of the General Electric Company.

These instructions do not cover all details or variations in equipment nor do they
provide for every possible contingency that may be met in connection with installation,
operation, or maintenance. Should further information be desired or should particular
problems arise that are not covered sufficiently for the purchaser’s purposes, the
matter should be referred to the GE Company.

GE Energy

41 Woodford Avenue, Plainville, CT 06062
www.geelectrical.com
© 2010 General Electric Company

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GEH-703 Rev. 1 (07/10 M45)