hager hw+ User manual

User manual
hw+
sentinel electronic trip units
RESET AUTO
MANUAL
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26LE007969A
01 About this manual 3
1.1 Safety instructions 3
1.2 Using this manual 5
02 sentinel electronic trip unit 6
2.1 Description 6
2.2 Display 8
2.3 LI trip unit 10
2.4 LSI trip unit 11
2.5 LSIG trip unit 12
2.6 Hager Power setup software 13
03 The types of protection device 15
3.1 Overview of protections 15
3.2 Long time delay protection against overcurrent 16
3.3 Short time delay protection against overcurrent 18
3.4 Instantaneous protection against overcurrent 20
3.5 Earth fault protection 21
3.6 Neutral protection 22
3.7 Zone Selective Interlocking function (ZSI) 23
04 Protection settings 26
4.1 Principle 26
4.2 Long time delay (LTD) protection setting 32
4.3 Short time delay (STD) protection setting 34
4.4 Instantaneous (INST) protection setting 36
4.5 Adjustment of the earth fault (GF) protection setting 37
4.6 Adjustment of the neutral (N) protection setting 39
4.7 Reviewing the settings 41
05 Commissioning the circuit breaker 44
06 Alarm management 45
6.1 PTA overload prealarm 45
6.2 Overload alarm 47
6.3 Trip alarm 48
6.4 System alarm 49
07 Maintenance indicator 52
08 Replacing the backup battery 53
09 Replacement of the rating plug of the electronic trip unit 60
Contents Page

36LE007969A
About this manual
1.1 Safety instructions
Warnings and instructions
This documentation contains safety advice which must be respected for your own safety and
to prevent property damage.
Safety advice relating to your own safety is identified by a safety warning symbol in the
documentation. Safety advice relating to damage to property is identified by "ATTENTION".
The safety warning symbols and the wording below are classified according to the risk level.
DANGER
DANGER indicates an imminent dangerous situation which, if not avoided, will result in
death or serious injuries.
ATTENTION
ATTENTION indicates a warning message relating to equipment damage.
ATTENTION also indicates important instructions for use and particularly relevant
information regarding the product, which must be respected to ensure eective and safe
use.
WARNING
WARNING indicates a potentially dangerous situation which, if not avoided, may result in
serious injuries or even death.
CAUTION
CAUTION indicates a potentially dangerous situation which, if not avoided, may result in
minor or moderate injuries.

46LE007969A
About this manual
1.1 Safety instructions
Qualified personnel
The product or the system described in this documentation must be installed, operated and
maintained by qualified personnel only. Hager Electro accepts no responsibility regarding the
consequences of this equipment being used by unqualified personnel.
Qualified personnel are those people who have the necessary skills and knowledge for
building, operating and installing electrical equipment, and who have received training
enabling them to identify and avoid the risks incurred.
Appropriate use of Hager products
Hager products are designed to be used only for the applications described in the catalogues
and in the technical documentation relating to them. If products and components from other
manufacturers are used, they must be recommended or approved by Hager.
Appropriate use of Hager products during transport, storage, installation, assembly,
commissioning, operation and maintenance is required to guarantee problem-free operation in
complete safety.
The permissible ambient conditions must be respected. The information contained in the
technical documentation must be respected.
Publication liability
The contents of this documentation have been reviewed in order to ensure that the information
is correct at the time of publication.
Hager cannot, however, guarantee the accuracy of all the information contained in this
documentation. Hager assumes no responsibility for printing errors and any damage they may
cause.
Hager reserves the right to make the necessary corrections and modifications to subsequent
versions.

56LE007969A
Purpose of the document.
This manual is designed to provide users, electricians, panel builders and maintenance
personnel with the technical information required for the commissioning and operation of hw+
circuit breakers with sentinel electronic trip units.
Field of application
This document applies to hw+ circuit breakers with electronic trip units.
Revisions
Version Date
6LE007969A September 2022
Documents to consult
Document Reference
User manual for hw+ air circuit breakers 6LE007331A
Installation manual for hw+ air circuit breakers 6LE007893A
hw+ user maintenance guide 6LE007897A
You can download these publications and other technical information from our website: www.
hager.com
Contact
Address Hager Electro SAS 132 Boulevard d’Europe
67215 Obernai France
Phone + 33 (0)3 88 49 50 50
Website www.hager.com
About this manual
1.2 Using this manual

66LE007969A
sentinel electronic trip unit
2.1 Description
hw+ air circuit breakers are equipped with a sentinel electronic trip unit on the front to protect
against overloads, short circuits and earth faults.
It has a display and dials to configure the protection settings and monitor correct operation.

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sentinel electronic trip unit
2.1 Description
The following characteristics are common
to all the versions of the sentinel electronic
trip units:
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1Display
2Button which can be used to :
- clear the alarm after the air circuit
breaker has tripped,
- navigate through the display screens.
3Adjustment dials of the sentinel electronic
trip unit.
4Rated current value In of the air circuit
breaker. This value is provided by the
rating plug installed on the electronic trip
unit.
5USB-C port to connect an external battery.
This USB-C port also allows connection
to a computer equipped with the Hager
Power setup commissioning software
(see Chapter 4.1 Principle).
6Backup battery powering the display after
electrical tripping.
This enables the display to signal
the tripping and its cause.
7Backup battery housing cover.
ATTENTION
To guarantee that the electronic trip unit functions well, it is recommended that a 24V
DC SELV external power supply be connected (recommended product reference Hager
HTG911H) to the TU terminal block.
Without this external power supply, the electronic trip unit requires the presence of a
minimum current of 120 A on one phase or 80 A per phase to provide its protection
functions.

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Description of the display
sentinel electronic trip units are equipped with a display that makes it easy to adjust and read
the causes of tripping of the hw+ circuit breakers.
AZE
6
7
8
9
1 2 3 4 5
R
1Overload indicator: displayed as soon as the current exceeds 105% of Ir.
2Error indicator: displayed when an error is detected.
3Maintenance indicator: displayed when a maintenance intervention is required.
4Text display area: displays the name of the protection parameter during adjustment or after a trip in
addition to the error codes of non-critical system alarms.
5Low or missing battery indicator: displayed if the electronic trip unit backup battery needs
changing or is not connected.
6Tripindicator: together with the digital display zone, the text display zone and the phase display,
enables the cause of the tripping to be precisely determined.
7Overload indicator: flashes as soon as the current exceeds 105% of Ir and is lit and steady above
112.5% Ir
8Overload pre-alarm indicator: warns of an imminent tripping risk.
9ReadyToProtect indicator: displayed when the electronic trip unit is operational
and ready to protect.
ANumerical display zone: used to display the values of the various settings
and what the tripping value was, using the following units.
A Ampere
 Peak current
S Second
I²t I²t curve
Also displays the codes of the critical system alarms.
ZPhase display: Neutral on the left / Phase L1 / Phase L2 / Phase L3.
EReference screen: shows the number of screens in the electronic trip unit
as well as its position in the display order.
RBargraph: used to view the currents read on the most highly loaded phase L1, L2 or L3 as a
percentage of the Ir setting.
sentinel electronic trip unit
2.2 Display

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In standby, the ReadyToProtect indicator flashes, indicating normal operation of the sentinel
electronic trip unit.
A short press of the button displays a 1st screen showing the highest current of the 3
phases flowing through the circuit breaker.
1
2
3
1
Current flowing through the circuit breaker in % of Ir.
2
Value in amps of the current flowing through the circuit breaker
on the most highly loaded phase.
3
Relevant phase.
sentinel electronic trip unit
2.2 Display

10 6LE007969A
The sentinel electronic trip unit is available in 3versions: LI, LSI and LSIG
LI sentinel trip unit
The LI sentinel trip unit is used to protect long cable lines where the rated fault current is
limited due to the impedance of the cable.
The dials are accessible from the front of the sentinel electronic trip unit, allowing precise
adjustment of the protection parameter settings. The protection adjusted in this way is
independent of the ambient temperature.
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1LTD Long time delay protection setting
2INST Instantaneous protection setting
3Neutral N protection setting
sentinel electronic trip unit
2.3 LI trip unit