Page 38 - 通用电气（中国）有限公司

EntelliGuard* L

Measurement Functions and Power Supplies

Ammeter
SETUP
An Ammeter is supplied with each EntelliGuard* Accuracy
at 100% of
METER
METER Electronic Trip Unit. The current in each of the three Parameter Measured Units Resolution breaker rating
phases and the Neutral can be viewed.
STATUS The device has an accuracy of 2% when viewed at Current L1, L2, L3, N A 0000 2%
the nominal current of the breaker and an accuracy
EVENTS of 5% when viewed when the breaker is running at
Electronic Trip Units METER Trip Operations counter. Accessible under the ‘STATUS’ menu the Trip
50 - 85% of its full load.
Trip Reason Indicators (event logging)

The Electronic Trip Unit keeps track of data indicating
STATUS
Operations Counter registers a maximum of 255
why the associated breaker has tripped and on how
overcurrent faults with their reason. (LT, ST, I or GF-EF).
many occurrences have taken place. Accessible
EVENTS
EVENTS
under the ‘EVENTS’ menu the Trip Reason Indicator
The data can be viewed and reset through the
STATUS menu Pickup status option.
keeps track of a maximum of 10 events that have
METER
stores the voltage, the phase’s involved, the current
value, the reason of the trip and the trip number (see
STATUS caused the EntelliGuard breaker to trip. The device
STATUS
counter). When an auxiliary voltage is connected the
EVENTS time and date of the event are also stored.
Intro
Neutral Protection LT, ST and I protection device can be jointly set to
A SET UP When inserted into a 4 pole breaker the one of the following values:
0%, 50%, 63% or 100%. x the values set for the
EntelliGuard* Electronic Trip Unit senses that
METER the breaker in which the device is installed has phase protection device.
a Neutral Pole. Via the set Up menu, a Neutral
B STATUS Setting option then becomes available in which the
EVENTS
C Reset Choice Function
When a fault has occurred the Trip Unit trips the required corrective actions. To follow this procedure
associated breaker. It is then deemed normal Trip Unit reset function should be set to MANUAL.
D installation practise to verify the reason of the However, in some cases it is required that
the breaker resets itself automatically. If this
fault before reconnecting power by resetting and
switching the breaker on. The advanced options functionality is required, the reset function should
included in the EntelliGuard* Trip Unit provide the be set to AUTOMATIC.
E user with the fault reason, magnitude and location, A selector switch on the Trip Unit front face allows
thus allowing the user to easily establish the the user this choice.
Auxiliary Power Supply
X The 24V DC auxiliary supply allows of the trip The separately available Test Box Kit can also be
unit setup function when the standard supply is used as a temporary power supply.
disconnected. At circuit loads >20% the standard This device has a battery pack and optionally can
power supply allows full uses of the setup option. provide power by using a 24 V DC power supply.

Test Kit
To verify that the Electronic Trip Unit is interfacing The device has a 24V auxiliary supply to allow it’s
correctly with the Breaker and to establish if the use in a secondary function as power supply of the
circuitry in the Trip Unit is functioning correctly a Trip unit when no network power supply is available.
test kit is available. The device can be plugged in to a jack on the trip
Unit Front face.
Trip Unit Toolkit - EntelliGuard manager toolkit
• Compatible with GTU, PremEon S, and MET trip units
• One-to-one connection with trip unit
• WaveForm capture/test available on standard version only
• 407999/GTUTK20 (testkit) is required for interfacing with EntelliGuard trip unit.
• Software free and could be downloaded from this website:
http://www.geindustrial.com/products/conversion-kits-and-trip-units/trip-unit-toolkit

B.8