ensto LYNX 3400 User manual

LYNX 3400
Installation and operation
manual for directional and polyphase
current fault detectors for MV
underground networks
Ed. 06.2019 V1
Ref: 72789_a / 2009363

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Legal notices
WARNING:
For the operation of this system in complete safety, it is essential that the installers,
users and technicians follow the procedures and precautions described in this guide.
Non-compliance with these instructions may cause damage to the products and/or
serious or even mortal injury.
-Before unpacking
>Verify that the product in its packaging has not been damaged during transport.
>Verify that the product is suitable for the intended installation.
-Before installation
>Carefully read the operation guide before installing or using this product.
>Perform the installation carefully, ensuring that the equipment remains
clean throughout the operation.
-After installation
> If you are installing this product for someone else, leave the guide for the end user.
> Clean the work area after installation.
The product may only be installed by a competent person with adequate training in
the installation practices and with adequate knowledge of proper safety and
installation practices for electrical equipment. If local regulations have requirements
relating to this training or adequate knowledge in terms of the installation of electrical
equipment, the aforementioned requirements must be complied with by this person.
Ensto Novexia declines all liability for any property damage or personal injury caused
by poor installation, mishandling, or failure to comply with safety recommendations.
General

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1 Introduction...........................................................................................4
1.1.Product purpose.......................................................................5
1.2.General characteristics.............................................................5
1.3.List of equipment required for installation ................................8
(not supplied by Ensto Novexia)
2 Installation...............................................................................................9
2.1.Unpacking and handling instructions ......................................10
2.2.Installation operations ............................................................. 10
2.3.External connections............................................................... 11
3 Commissioning..................................................................................... 16
3.1.Points to be checked before commissioning............................17
3.2.List of commissioning operations............................................. 18
3.3.Operational tests ...................................................................... 19
4 Operation............................................................................................... 21
4.1.Functionality ............................................................................. 22
4.2.Commands, tests, parameters, upgrades with new functions..24
5 Maintenance..........................................................................................26
5.1.Preventive................................................................................ 27
5.2.Corrective.................................................................................28
6 Technical assistance............................................................................29
7 End of product life cycle......................................................................30
Contents

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1Introduction
1.1.Product purpose
1.2.General characteristics
1.3.List of equipment required for
installation (not supplied by Ensto
Novexia)
1. Introduction

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1.1.Product purpose
LYNX 3400 fault detectors are designed to be installed on the underground sections of
MV networks earthed by means of a limiting coil. The detector enables the following
aims to be achieved:
•Improving detection performance
•Counting faults and changing the operation of auxiliary contacts
•Standardizing cores, voltage sensors, indicator lights and their connections
•Standardizing and extending the usable lives of batteries
•Using plug and coded type connectors for connecting current probes
1.2.General characteristics
Reset test and
calibration voltage
sensor button
Calibration Led

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MVnetwork
Voltage Frequency
15 to 20kV
50 Hz / 60 Hz
Detection of single phase-earth faults (2 cases : 'Jeu1" and "Jeu2"
-Residual current detection threshold
-Residual voltage detection threshold
-Threshold and holding time of residual voltage
Signaling according to fault direction
30A or 60A peak
4.5kV or 9kV peak
1.75 kV or 3.5kV rms. –50ms
Red or green
Polyphase current thresholds in A
500 Aeff - 80 ms - alternate red and green
Double current thresholds in A
250 Aeff -80 ms - alternate red and green
Fault indication duration in hours
2 hours
Accumulator
Battery
Supercapacitor 350F Lithium
LSH20
Counter
4-digit display
H = 17.8 mm
Fault response time in ms
100 ms
Fault indication reset after triggering
-Indication locking
- By the restoration of LV or MV > 5A
-On expiry of the long-term time delay
-By manual operation
3 s
2 hours
Reset button
External indicator light housing
-Number of LEDs
-Total luminous flux
-Flashing frequency
-Standard flashing capacity with lithium batteries
6
7Ln 1 s
200 hours
Environment
-Operating temperature
-Storage temperature
-Humidity level
-Vibration resistance (IEC 68-2-6 & 68-2-29)
-Protection rating
-Overall dimensions
-Device mass (excluding cables)
-15 °C to + 55 ° C
-25 ° C to + 70 ° C
up to 100 % 2 g
IP30 - IK07
289 x 200 x 92 mm
1.1 kg

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•Storage
Storage temperature: -25 to +70°C
Relative humidity: 10 to 100%
•Operation
Normal operating temperature:
-15 to +55°C
Relative humidity: 10 to 100%
Cable routing
LV power
supply
connected in
parallel
External
indicator light
LV power supply
Cores
Remote indication
Climatic conditions
200 92.5
0
289
External
indicator light
Voltage sensors
Current sensors
Voltage sensors
(if needed)

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1.3.List of equipment required for installation
Directional detectors:
NAME
DESCRIPTION AND CONTENTS
Lynx 3425
1 directional detector with an LV power supply, a counter and supercapacitor
Lynx 3445
1 directional detector with an LV power supply, a counter and lithium batteries
Lynx 3455
1. stand-alone directional detector, with a counter and lithium batteries
Composition of a complete unit
o1 Lynx case equipped depending on the version with:
o1 supercapacitor
o1 or 2 lithium batteries (not supplied)
oresin-coated cores with 1 meter wired connectors
o1 red and green external indicator light housing connected
to theLynx using a 7 meter connection cable
1 Lynx connection cable - 7 meter wired core connectors
1 Lynx connection cable - 7 meter wired voltage sensors
connectors
Accessories supplied alone (depending on the option)
o1 Lynx case with an LVpower supply or stand-alone depending on
the option without accessories
oresin-coated cores with 1 meter wired connectors
o1 external indicator light housing (red, green)
o1 x 2 or 12 meter wired connecting harness depending on the option,
comprising:
1 Lynx connection cable with core connectors
1 Lynx connection cable with voltage sensors connectors
1 Lynx-indicator light housing cable
oLSH20 type battery, one per case with an LVpower supply and two per stand-
alone case
Standard equipment enabling the device to be wall-mounted (screws and wall
plugs) is not supplied by Ensto Novexia.
1. Introduction

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2. Installation
2.1. Unpacking and handling instructions
2.2. Installation operations
2.3. External connections
2. Installation

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)
,
Mounting distances:
215 mm x 175 mm
2.1. Unpacking and handling instructions
Open the box and check in relation to the order.
2.2. Installation operations
Installing the LYNX 3400 case
The LYNX 3400 case is fixed to a flat wall using the following accessories
(not supplied by Ensto Novexia):
-4 slotted head screws Ø4.5 X L 35 mm
-4 wall plugs Ø6 L 30 mm
To access the 4 case mounting holes,
remove the cover.
After inserting the wall plugs into the wall
(See the mounting distances opposite position
each of the 4 Ø 4.5 screws in its hole.
Installing the external indicator light housing
The indicator light housing is supplied with a 3X1.5² U1000RO2V type
cable, measuring 2, 7 or 12 meters long depending on the order.
Mounting distances for the housing 53 x 38 mm (2 xØ 4.5 screws).
Toconnect the indicator light housing to the LYNX case see page 14.

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2.3. External connections
Connecting the CORES (without medium voltage)
The current probes used with the LYNX 3400
are splitted core current sensors with a lever
clasp on a resin-coated core. Ratio 1/500.
The assembly uses three identical cores
detecting:
-single-phase faults on the earth
-polyphase faults
USE OF CORES
VERSION 2012
2. Installation

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Each core is mounted on an underground cable phase, with the green
side facing towards the unit's busbar.
It is centered and attached to the cable using 3 self-centering rubber
bosses.
The screened braid for each phase has to be created by an insulated
conductor and passed inside the corresponding core.
The wires for each core are connected using a coded 2-contact MATE-N-
LOCK connector.
A 4x1.5mm² U1000RO2V type cable equipped with female MATE-N-
LOCK connectors is supplied for connecting cores to the LYNX 3400's J2
terminal block. Insert the stripped end with end sleeves into the LYNX's
cable grommet.
Connect the J2 terminal block as follows:
l1 l2 l3 C NC
Terminal I1: Brown wire
Terminal I2: Black wire
Terminal I3: Grey wire
Terminal C: Blue wire (common)
Terminal NC: Not connected

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Connecting the voltage sensors
The voltage sensors used with LYNX 3000s are the capacitor dividers of
separable connectors (plug-in terminals) located:
- on transformers of HV/LV substations or
- on network cells of switching substations
These capacitor dividers were previously fitted with voltage sensors removable
potential connection. See installation instructions of the voltage sensors
supplier.
An earth connection has also to be done.
All the wiring from the voltage sensors and the earth connection will have to be
grouped in a standardized female Harting connector.
A cable 4X1.5mm² type U1000RO2V is supplied for linking the capacitor
dividers to the LYNX 3000. On the capacitor divider side this cable is fitted with
a standardized male Harting connector.
Connect the J1 terminal block as follows:
U1 U2 U3 C
Terminal U1: Brown wire
Terminal U2: Black wire
Terminal U3: Grey wire
Terminal C: Blue wire (common)
Detector connection in parallel (max. 3):
- Pass the cable end through the appropriate cable gland (refer to page 7)
- Connect to terminal strip J1 by doubling the wires in the terminal strip
Important!!! In all cases you must restart the calibration procedure for all
detectors (refer to page 19)

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Connecting the external indicator light housing
The LYNX 3400's indicator light housing has red and green lights. It is
supplied with a 3X1.5mm² U1000RO2V type cable. Position the indicator light
with the cable gland facing downwards.
Connect the J9 terminal block as follows:
Terminal +: Brown wire
Terminal V: Black wire
Terminal R: Grey wire (or blue)
+ V R
Connecting to remote indication
The connection is made using a 4X1.5mm² U1000RO2V type cable (not
supplied). An equipment fault may be actuated by the detector in
response to:
-A need to replace the battery or batteries when the original battery
becomes flat after 7.5 years of use
-An anomaly affecting the alternative auxiliary power supply
-An anomaly affecting the electronics
Connect the J5 terminal block (removable and screwed-in) as follows:
Terminals NC: Not connected
Terminal R: Red fault
Terminal V: Green fault
Terminal DE: Equipment fault
Terminal C: Common
NCNC R V DE C
2. Installation

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Power supplies (depending on the option)
-LV power supply + supercapacitor option
350 Farad 2.7 V supercapacitor –duration life life 15 years
-LV power supply + battery option
1x D20 LSH 20 type lithium battery, not supplied - duration life: ≥ 7.5 years
-Stand-alone option
2x D20 LSH 20 type lithium batteries, not supplied - duration life: ≥ 7.5 years
Pay attention to the direction of the batteries: the two batteries face in the
same direction (+ to the left).
-230V AC external power supply (LV power supply option)
The LYNX 3400's normal power source is low voltage 230 V, which is
available on site. The LV is supplied to the LYNX 3400 by a 2 x 1.5mm²
U1000RO2V type cable –not supplied. LYNX 3400s does not need to be
connected to the neutral earth.
Connecting the J4 connector
N PH
•Insert the cable via the LYNX 3400's cable grommet.
•Connect the cable's neutral and phase wires respectively:
-Neutral, to the left-hand terminal.
-Phase, to the right-hand terminal.
•Check the condition of the fuse F1. A 5X20 F type
(250mA) spare fuse is available on the lower left-hand
side of the detector.
NB.: During lengthy storage periods, the lithium battery may be passivated, and
therefore unable to supply the current needed for the LYNX 3400 to operate. To
depassivate it:
- Short circuit its terminals with a 47 Ohm 3W resistor
- Wait for a noticeable rise in the resistor's temperature (10 to 30
seconds depending on the condition of the batteries)

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3Commissioning
3.1. Points to be checked
before commissioning
3.2. List of commissioning operations
3.3. Operational tests
3. Commissioning

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3.1. Points to be checked before commissioning

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3.
M
ise
en
servic
e
3.2 List of commissioning operations
Configuration fault detection sensitivity
The LYNX 3400s have two detection levels labeled "Jeu 1" and "Jeu 2" (Game 1
and 2).
Game 1 corresponds to the greater sensitivity of the earth fault detection, this
position is used preferentially.
The game position 2 is intended for special cases including that of detectors
complementing the departure equipment comprising a majority of directional
detectors of older generation (prior to 2009).
To validate the parameter set, set IN16 to GAME 1 or GAME 2 and then press
BP1 to memorize the position of the inverter.
IN 16 - GAME 2 IN16-GAME 1
Game 1: factory setting position
Configuring the network's MV voltage
To take into account the network's MV voltage, the configuration of the voltage is
carried out by the inverter ST2.
S
T
2
Medium voltage 15 kV
Medium voltage 20 kV
20 kV: factory setting position

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Configuring the fault signaling delay
A fault appearing on the network is signaled by the LYNX 3400 only if it causes the
disappearance of the MV voltage after a configurable time notably allowing to avoid
the activation of the signaling during the reclosing cycle.
The LYNX 3400s have a time delay adjustable to: 10s or 40s or 70s.
The time delay is configured via the Tempo 1 and Tempo inverters:
Tempo 1
Tem
po 2 10 s 40 s 40 s 70 s
10s : factory setting position
At the end of the configuration, for the new parameters to be taken into account,
make an action on BP1 (BP reset μC) LED LD1 lights up for 200 ms.
3.3 Operational tests
The LYNX 3400 is used for MV networks operated in 15kV or 20kV 50 Hz.
You can modify the selection of the mains voltage, the time delay configuration
and the earth fault detection sensitivity:
At the first power up of the box, the led LD1 lights up red:
System is not calibrated so it is necessary to launch a calibration of the voltage
sensors;
Calibration of the voltage sensors (TAKE CARE !!! the network's MV voltage
must be present) :
- Press the "calibration" BP (BP2) for 3s, LED LD1 flashes, indicating the
calibration in progress. If the LYNX 3400 is equipped with a display you can
read during the current test "ETAL"
- At the end of the calibration (about 10s)
 LED LD1 light off and the display disappears indicating correct calibration.
 LED LD1 continues to flash and the display shows "DEFO" the box can not
calibrate.
To restart the calibration procedure, open the lid of the LYNX 3400 and press
the red BP BP1 which is used to reset the cabinet and thus stop the
calibration.

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Then, press the "calibration" BP (BP2) for 3s to restart a new calibration, if the
system remains in fault there is a problem on the voltage measurement chain:
 On the voltage sensors
 On the connection of Harting connectors
 On the directional LYNX
Important !!! a calibration can be started at any time (without the red led LD1
light on )
If the calibration is not correct, the detector is not functional.
Launch of a LYNX 3400 Test
To check the operation of the detector a press on the BP "Test" (BP4) starts
the test procedure. If the LYNX 3400 is equipped with a display, it indicates
"TEST".
Both TS contacts close and the Red and Green LEDs flash on the Lynx board
and the external LED for 1minute. The polyphase counter "POLY" is
incremented. You can stop the current test by pressing the BP "Raz test" (BP2