Enelion Energy Guard User manual

Energy Guard
Assembly manual
Enelion Sp. z o.o.
inf[email protected]

Copyright, Enelion Sp. z o. o.
The manual may change as the product develops. The information provided may not be correct. All rights
reserved.
Revision: V 1.1
Number of pages: 16
Released: September 24, 2021
1

Energy Guard - Assembly manual 9 - 2021
Contents
1 Important information 4
1.1 General provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 General information 5
3 Design indications of the installation 6
3.1 Recommended power connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Location selection criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Assembly 8
4.1 Mounting the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Modification of the electrical switchboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Controll after commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.4 FAQ ................................................... 10
5 Dynamic Load Balancing 11
5.1 DLBsystem ............................................... 11
5.2 Energy Guard - impact on DLB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.3 Configuration .............................................. 11
5.4 Queuing ................................................. 12
5.5 Maintenance............................................... 12
6 Technical data 13
6.1 Enelion Energy Guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2 Contents

Energy Guard - Assembly manual 9 - 2021
Congratulations on the purchase of the Enelion product and thank you for your trust.
Before installation, please make sure that the module packages contain all the elements. Up to date version of
the operation manual can be accessed at http://enelion.com/help.
Please note the contents of the manual before initiating any activities related to the installation, or activation of
Energy Guard.
3 Podzi ˛ekowania za zakup

Energy Guard - Assembly manual 9 - 2021
1. Important information
1.1. General provisions
Installation and servicing of the device must be per-
formed by qualified and authorized persons, and re-
pairs may only be carried out by the manufacturer or
entities authorized by the manufacturer.
Tampering with the mechanical, electrical and elec-
tronic components and the device software is forbid-
den and shall result in the nullification of the warranty.
The exceptions include operations described herein
and those agreed in writing with the manufacturer.
The manufacturer is not responsible for damage to
property resulting from the forbidden interference in the
product.
The electrical installation to be used by the device dur-
ing its operation must meet the conditions described
in the installation manual. The manufacturer is not re-
sponsible for incorrect assembly and/or protection of
the electrical installation to which the device is con-
nected.
The manufacturer is not responsible for the malfunction
of the electrical installation to which the device is con-
nected.
The electrical installation to be used by the device dur-
ing its operation must comply with the legal standards
in force in the place of assembly and the operation of
the device. The manufacturer is not liable for any dam-
age caused by an electrical installation that does not
meet legal standards.
The device does not have a built-in switch. The de-
vice activates when the supply voltage is applied. The
power supply cut off function must be provided by the
appropriate electrical installation devices described in
the assembly manual. Except in emergencies, the de-
vice must not be turned off during the charging process.
It is forbidden to supply the power to the device when
the device casing remains open.
The manufacturer is not responsible for loss of health
or life by any persons resulting from failure to comply
with the above-mentioned recommendations.
The AC charger station to which the Energy Guard will
be connected, must be updated to the latest software
version and DLB function activation it is required, which
is described in this manual.
1.2. Safety instructions
All operations described in this manual should be per-
formed only after making sure that there is no voltage
in the power cord.
Outdoor installation should not be carried out during
precipitation or strong wind, if there is a risk of water
or dirt getting into the device.
4 Important information

Energy Guard - Assembly manual 9 - 2021
2. General information
Enelion Energy Guard (EEG) is a device that monitors
energy consumption the whole building, from a single
household to the largest office parks. Based on the
power ordered from the energy supplier and the current
consumption measured by Energy Guard, it is possible
to obtain information - how much power can be directed
for EV charging. Energy Guard can also be used in
the chain of charger stations (car parks, shopping cen-
ter, fleet parking lots), which allows you to use the full
potential of the current supplied energy. Current mea-
surement is performed with the use of measuring coils,
which simplifies the installation process.
Fig. 1: Enelion Energy Guard
Enelion Energy Guard is compatible with the propri-
etary Enelion Chain communication protocol, enabling
communication with the local network of the charger
stations. Thanks for that it is possible to enable Enelion
DLB function, providing dynamic load balancing. This
allows for more effective use of the connection’s power
for charging vehicles.
INFO
See User manual to learn more. The manual
contains detailed information on the functional-
ity and use of the device.
The Enelion Energy Guard comes with a set of mea-
suring coils. The set of EEG includes three current
transformers, intended for installation on the supplying
power wires to the building, omitting charger stations or
on the main connection supplying the entire facility. For
each phase fall one current transformer.
We can distinguish, depending on the needs:
1. Measuring transformers in Home option, with di-
ameter of the hole: 7 mm and maximum input
current 40 A.
Fig. 2: Measuring coils in Home option
2. Measuring transformers in Business option, with
diameter of the hole: 26 mm and maximum input
current 100 A, 23 mm ×33 mm and maximum in-
put current 300 A or 36 mm and maximum input
current 500 A .
Fig. 3: Measuring coils in Business option
INFO
Measuring coils with 300A and 500A of maxi-
mum current are in opening coils version. It is
a possibility of individual choice of measuring
coils, according to the customer requirements.
5 General information

Energy Guard - Assembly manual 9 - 2021
3. Design indications of the installation
3.1. Recommended power connection
Enelion Energy Guard is adapted to be powered from
five or three-wire (with avoiding the PE conductor), in
the TN-S and TT type of networks.
HINT
Energy Guard can work in 3 or 1 phase con-
figuration. This Assembly manual is based on
3-phase version. All connection should be done
taking into account the number of phases.
Devices for communication with charging terminals are
supported by the Enelion Chain communication inter-
face. For implementation of it, a wired connection be-
tween devices using a CAT 5 or CAT 6 Ethernet cable
is required.
3.2. Location selection criteria
This device is designed to be installed inside of the
electrical switchboard, near of the powering cords, on
which should be attached the measuring coils.
oWARNING
It is forbidden to install the device in easily ac-
cessible locations.
INFO
It is possible to choose the place of installa-
tion of measuring coils. They can be installed
on lines feeding the building load [Fig.4] or to-
gether with the charging stations lines feeding
the building load only [Fig.5].
Fig. 4: Measurement of the entire connection with the
charging terminals.
Fig. 5: Measurement of the load excluding charging ter-
minals.
6 Design indications of the installation

Energy Guard - Assembly manual 9 - 2021
oWARNING
The location of the measuring coils should be
noticed in the Dealer Tool Box configuration.
The device should not be located in a place of high ex-
posure to sunlight, which could cause overheating. Do
not install the device near heat sources nor in the loca-
tions exposed to high humidity.
It is forbidden to install the device in explosion hazard
zone.
Before installation, make sure that the mounting space
inside the switchboard is sufficient for the device. For
more information see the Switchboard modification.
oWARNING
The manufacturer accepts no responsibility for
any damage resulting from failure to comply
with the above-mentioned recommendations.
7 Design indications of the installation

Energy Guard - Assembly manual 9 - 2021
4. Assembly
oWARNING
Before commencing the installation, switch off
the power supplied to the cables.
Fig. 6: Energy Guard 3-phase variant connection dia-
gram.
INFO
In case of 1-phase version, only one measur-
ing coil should be connected and belonging to it
voltage line.
4.1. Mounting the device
Enelion Energy Guard is designed for mounting on a
DIN rail, inside the switchboard.
1. Cables should be prepared and connected to the
CAN bus in accordance to the diagram above.
The order of the wires does not matter. We sug-
gest using a twisted pair cable with a maximum
length of 500 m.
INFO
Pay attention to communication bus termi-
antion, both in Energy Guard and charg-
ing station.
Use termination for devices at the beginning and
end of the network. Termination is done by mov-
ing the switch in the green connector direction.
Termination in enabled by default. [Fig.7].
Fig. 7: Termination switch.
2. Measuring coils should be installed on wires of all
phases according with the order indicated above.
oWARNING
Red arrows show the direction of the cur-
rent flow. Wrong order or incorrect instal-
lation of the current transformers will pre-
vent the properly operation of the EEG.
Direction of the installation, according to the ar-
row on the transformer (disconnect the power
supply cables to the switchboard and insert
through the transformer from the side marked
with the arrow).
8 Assembly

Energy Guard - Assembly manual 9 - 2021
INFO
The Home version measuring coils, are
equipped in the necessary cables and
connector that should be plugged into the
EEG.
The Business version measuring coils,
are not equipped in the cables. Sug-
gested cables with a conductor cross-
section of 0,5 mm2.
3. Voltage lines (power supply) EEG should be con-
nected under the order indicated in the diagram
[Fig.6]. The device does not require additional
protection. The cables on the switchboard side
should be connected to the terminals of the ap-
paratus located before branching the circuits in
the switchboard (e.g. a meter or the main pro-
tection - overcurrent switch). We suggest using
stranded type cables with a core cross-section of
0,5 mm2.
oWARNING
A reliable and stable voltage source must
be provided. Connecting the Energy
Guard voltage lines to a point constituting
a side branch of the installation may result
the loss of the power source in the case
that this branch would be disconnected,
for example by triggering its protection.
Fig. 8: Sample connection of the voltage lines to
the selected apparatus in the switchboard.
4.2. Modification of the electrical
switchboard
Since the Enelion Energy Guard has different
dimensions than the standard fuse which is in-
stalled in the switchboard, it is required to enlarge
the hole in the blend.
Fig. 9: EEG installed in the electrical switch-
board.
INFO
It is permissible to mount the EEG in other
orientations than directly on the DIN rail,
if required by the switchboard design.
4.3. Controll after commissioning
After connecting the wiring and mounting the
EEG, the power can be restored. The EEG has a
very simple interface:
Fig. 10: LED interface on the front of the device.
Status led:
(a) Pulsing blue - correct state, charging does
not take place.
(b) Pulsing green - correct state, correct state,
ongoing charging at any device.
(c) Flashing yellow - No connection with the
charging station (CAN bus)
(d) Red - Fault/Damage
Phase diodes:
(a) Red - power consumption on a given phase
(b) Green - energy return on a given phase
9 Assembly

Energy Guard - Assembly manual 9 - 2021
4.4. FAQ
Problem Remedy
The LEDs of the given
phases are green, and no
renewable energy sources
are connected to the electri-
cal system.
The measuring coils were
installed frontside back
The status LED flashes yel-
low
Check the connection of the
CAN bus wires.
The status LED is red Contact with the service
The status LED flashes
blue, despite charging
The charging station DLB
function is not enabled.
10 Assembly

Energy Guard - Assembly manual 9 - 2021
5. Dynamic Load Balancing
5.1. DLB system
Dynamic Load Balancing - DLB - is a smart system of
load management used during EV charging process. It
allows dividing the total input power between connec-
tors in a way, that allows maintaining consumption be-
low a given level. It helps to prevent surcharging net-
work of the charger’s operator with extra fees from an
electric power supplier. DLB also allows using avail-
able power, which appears after disconnecting any car
from the charger in the network. It can be used from
the quantity of just two connectors, up to couple of hun-
dreds of them, so it can be applied as well as in the
single household as well as in the whole parking lot.
In the basic version, an internet connection is not nec-
essary for DLB to work. After energizing chargers,
they’ll know what to do.
Nevertheless, after fitting „master” unit in the Bridge
communication module and Enelion administration sys-
tem, you gain access to many developed functions al-
lowing remote management of charging.
5.2. Energy Guard - impact on DLB
The combination of EnergyGuard with a network of
chargers allows the DLB functionality to be extended
to include other electrical devices than chargers in the
power distribution. From this point on, the connection
limitation will determine the total power allocated to the
building including chargers. The chargers will adjust the
charging power of the cars so that, together with other
electrical devices, the current limit of the connection will
not be exceeded.
When energy-consuming devices are turned on, the
Energy Guard, measuring the load, transmits the in-
formation about the current energy consumption to the
charging station, thanks to which there is a proportional
reduction of the available power for EV charging - there
is no risk of overloading the home electrical installation,
and thus triggering electrical protection.
Energy Guard can also be used in a network of charg-
ers (parking, shopping centres, fleet parking), which al-
lows you to use the full potential of the current supplied
energy, without increasing it - that is profitable and thus
valued by accountants in every company. During peak
hours, cars can be charged with the minimum required
power adequately distributed by Enelion’s charging ter-
minals. The undoubted advantage of using EEG is the
possibility of having a network of chargers with a total
power exceeding that available - having 22kW available
for chargers, we can have several 22kW chargers that
will always charge with the maximum available power.
Fig. 11: No DLB system
Fig. 12: Active DLB system
When the charging stations are connected to the inter-
net, system status can be monitored and managed via
the administration system Enelink.
5.3. Configuration
Configuration can be done via DealerToolBox. This
software is available on the manufacturer website. To
configure the network of chargers, it is necessary to
know the maximum current limit of the connection. Typ-
ically, this parameter corresponds to the tripping value
of the fuse protecting the connection in the switchgear.
Another configuration parameter is the location of the
EnergyGuard measurement in the switchgear. Energy-
Guard can be installed in two ways:
1. The measurement of the whole power network to-
gether with charger stations [Fig.4].
2. The measurement of the whole power network
without charger stations [Fig.5].
INFO
Information on the connection variants with dia-
grams can be found in the chapter Design indi-
cations of the installation.
11 Dynamic Load Balancing

Energy Guard - Assembly manual 9 - 2021
By default, the chargers will treat the measurement as
if they did not include chargers, but it is possible to con-
figure the device using the Delaer Toolbox.
oWARNING
Incorrect configuration may lead to unexpected
behavior of the charging power sharing algo-
rithm.
Configuration
parameters
Comment
Current limita-
tion of the mains
connection 32 A
Corresponds to the limita-
tion per phase - for a single-
phase 7,4 kW and three-
phase installation 22 kW the
limitation value will be the
same and will be 32 A
Measurement
of the mains
connection with
chargers
EnergyGuard installed at
the very beginning of the
mains connection - it is fol-
lowed by branches to charg-
ers and other devices
Measurement of
the mains con-
nection without
chargers
EnergyGuard installed on a
branch to the devices them-
selves - a branch to the
chargers is made before the
EnergyGuard
5.4. Queuing
According to the IEC 61296 standard, the charger must
not limit the car charging current below 6 A per phase
(1,4 kW single-phase or 4,1 kW three-phase charging).
If there is not enough power, the charger goes into
standby mode. Charging will resume when minimum
charging power is available again.
If the suspension occurs while charging more than one
car, the charging suspension is queued. The car that
has charged the most energy during that charging ses-
sion will pause first. If necessary, the next cars with the
highest energy consumption will be turned off one by
one.
In a situation where, during the pause, another car gets
a higher state of charge than the paused car, the switch
will occur. First, the charging car will pause, allowing
the second car to resume charging.
INFO
Queuing is to evenly distribute energy among all
charged cars.
5.5. Maintenance
The device is designed to operate in temperatures from
−25 °C do 55 °C. The manufacturer does not guaran-
tee the proper functioning of the device in tempera-
tures outside the specified range. Chargers that are
damaged because of exposure to temperatures below
−25 °C or above 55 °C are not covered under the war-
ranty.
oWARNING
The device may only be opened by a qualified
and authorized person.
12 Dynamic Load Balancing

Energy Guard - Assembly manual 9 - 2021
6. Technical data
6.1. Enelion Energy Guard
Electrical data
Nominal supply voltage 1x 230V AC / 3x 230V AC ( +-10%)
Network type TN-C; TN-S; TN-C-S; TT
Voltage frequency 50 Hz/60 Hz
Overvoltage category III according to EN 60664–1
Maximum value of measuring current Depends on the current transformers (Home: 40 A, Busi-
ness: 100 A, 300 A, 500 A); possibility to individual
choose for higher value of current
Accuracy Accuracy class 0,5
Maximum temporary overload* 100%
Bidirectional current measurement Yes
Measurement point parameters Three or one phase system (included correct amount of
measuring coils.)
Typical reaction time from switch on to
change the charging power
< 1,5 s
Maximum charging hold time 3 s, according with IEC 61296
Maximum charging station reaction time on
change of available power
5 s, (according with IEC 61296)
Maximum EnergyGuard reaction time on
higher current consumption detection
1 s
Maximum connection overload time** 9 s
Maximum connection current limitation 3 kA
*must be executed following conditions:
1. Connection was in 100% used by cars
2. At the same moment the external load has been
launched using 100% of the main connection
13 Technical data

Energy Guard - Assembly manual 9 - 2021
**must be executed following conditions:
1. Start the load immediately after the last Energy-
Guard measurement ( 1 s of delay)
2. The previous change in charging current oc-
curred immediately before switching on the load
( 5 s of delay)
3. Connected load was so high, that charging had
to be stopped.
4. The car did not react to the suspension of charg-
ing from the charging station. ( 3 s of delay)
Mechanical data
Housing Plastic PC/ABS, mountage on DIN rail
IP protection Mountage inside the switchboard
Maximum diameter of cables Depends on the measuring coils
Height (mm) 105 mm
Width (mm) 20 mm
Depth (mm) 80 mm
Interfaces
Maximum count of car chargers 3 pieces- in Home version; 90 pieces- in Business version
User interface Front pannel LEDs
External conditions
Working temperature from −25 °C to 55 °C
Storage temperature range from −35 °C to 55 °C
Permitted relative air humidity from 5% to 95%
Elevation above the sea level maximum 2000 m
14 Technical data

© 2021 ENELION
Pana Tadeusza 50, 80-123 Gda´ nsk, Polska