Victron energy 24/30 User manual

USER MANUAL
SKYLLA-TG 24/30 with Universal Input
SKYLLA-TG 24/50 with Universal Input
SKYLLA-TG 24/100-G with Universal Input
SKYL
LA-TG24100
victronenergie
C H
AR
G E
R

opyrights  2010 Victron Energy B.V.
All Rights Reserved
This publication or parts thereof, may not be reproduced in any form, by any method, for
any purpose.
VICTRON ENERGY B.V. MAKES NO WARRANTY, EITHER EXPESSED OR IMPLIED, INCLUDING BUT NOT
LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THESE VICTRON ENERGY PRODUCTS AND MAKES SUCH VICTRON ENERGY
PRODUCTS AVAILABLE SOLELY ON AN “AS – IS” BASIS.
IN NO EVENT SHALL VICTRON ENERGY B.V. BE LIABLE TO ANYONE FOR SPECIAL, COLLATERAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH OR ARISING OUT OF PURCHASE OR
USE OF THESE VICTRON ENERGY PRODUCTS. THE SOLE AND EXCLUSIVE LIABILITY TO VICTRON ENERGY
B.V., REGARDLESS OF THE FORM OF ACTION, SHALL NOT EXCEED THE PURCHASE PRICE OF THE
VICTRON ENERGY PRODUCTS DESCRIBED HEREIN.
For conditions of use and permission to use this manual for publication in other than
the English language, contact Victron Energy B.V.
Victron Energy B.V. reserves the right to revise and improve its products as it sees fit.
This publication describes the state of this product at the time of its publication and
may not reflect the product at all times in the future.

2 Manual Skylla with universal input
USER MANUAL SKYLLA UNIVERSAL INPUT
1. INTRODUCTION
1.1 Victron Energy
1.2 The Skylla Generation chargers
1.3 Warnings 6
2. DESCRIPTION 7
2.1 The Skylla battery charger 7
2.2 The battery 8
2.3 Protection 9
3. DIRECTIONS FOR USE 11
3.1 Installation 11
3.2 Operation 14
3.3 Maintenance 1
4. OPTIONS 16
4.1 Permanent boost-charge 17
4.2 Adjusting the charge voltage 17
4.3 Adjusting the equalize-charging mode time 18
4.4 Diode-splitter charge voltage compensation. 18
4. Traction battery compensation 19
4.6 Use as a power-supply 19
4.7 Use of a temperature sensor. 19
4.8 Charging batteries with voltage sensing 20
4.9 Intelligent startup 20
4.10 Connecting the output voltage alarm 21
4.11 Connecting remote panels 21
4.12 Connecting a remote on/off switch 22
4.13 Connecting a remote boost switch 22
4.14 Connecting a voltmeter 23
4.1 Connecting a ampèremeter 23
. FAULT TRACING 24
6. TECHNICAL SPECIFICATIONS 2
6.1 General 2
6.2 Input 2
6.3 Output 26
6.4 Mechanical 27

Manual Skylla with universal input 5
1. INTRODUCTION
1.1 Victron Energy
Victron Energy has established an international reputation as a leading designer and
manufacturer of power systems. Our R&D department is the driving force behind this
reputation. This department is continually seeking new ways of incorporating the latest
technology in our products.
A Victron Energy power system can supply high-quality energy at places where there is no
permanent mains power source available.
An automatic stand alone operating energy supply system can consist of: a Victron Energy
inverter, a Victron Energy battery charger, if required a Victron Energy Mains Manager and
batteries with sufficient capacity.
Our equipment can be used in numerous situations, in the field, on ships and in other
places where mobile power is indispensable.
Victron Energy equipment can be used for all kinds of electrical appliances for household,
technical and administrative purposes and instruments susceptible to interference.
1.2 The Skylla Generation chargers
This manual contains directions for installing the following chargers: Skylla-TG 24/30,
Skylla-TG 24/50 and the Skylla 24/100-G. It describes the functionality and operation
including their protective devices and other technical features.

6 Manual Skylla with universal input
1.3 Warnings
The cover of the battery charger may only be removed by a qualified
technician. Before obtaining access to the battery charger the mains
supply circuit must be disconnected.
Explosive gasses can occur during charging a lead-acid battery.
Prevent flames and sparks.
Provide adequate ventilation during charging.
The battery charger can not be used to charge non-rechargeable
batteries.
The on/off switch at the front of the cabinet does not switch off the
mains supply.
Discon
nect the mains supply before making or breaking the
connections to the battery.
Do not use the voltage sense facility in combination with the
diode-
splitter compensation. This will raise the output voltage,
which could damage the battery.
There is a dangerous voltage present on some of the metal parts
inside the battery charger.
The battery charger is NOT protected against reverse battery
polarity. ("+" connected to "-" and "-" connected to "+").
Follow the installation procedure.
The warranty expires when the
battery charger becomes defective due to reverse battery polarity.

Manual Skylla with universal input 7
2. DESCRIPTION
2.1 The Skylla-TG battery charger
The Skylla-TG battery charger is a fully automatic charger for 24V batteries and accepts
any mains supply that delivers 90-265 V A , with frequencies ranging from 45 to 65 Hz.
The Skylla-TG also accepts D supply, ranging from 90 up to 400 V D .
It charges the battery according to the IUoUo characteristic, which is a 3-stage charging
characteristic. This characteristic is shown below in illustration 1.
While charging, the Skylla-TG charger continuously measures the battery voltage and
current and recalculates the charging voltage and current based on the measured values.
Type
Boost vo
ltage
Float voltage
Minimal voltage
24V /
3
0A
28,5 Vdc
26,5 Vdc
25 Vdc
24V /
5
0A
28,5 Vdc
26,5 Vdc
25 Vdc
2
4V /
10
0A
-
G
28,5 Vdc
26,5 Vdc
25 Vdc
Assuming that the battery is discharged, the Skylla-TG charger commences charging in
the boost-charge mode. In this mode the battery is charged until the battery voltage
reaches the boost voltage. At this point the battery is charged to approximately 80% of its
maximum capacity. This is the end of the boost-charge mode and the Skylla-TG charger
then automatically switches to the equalize-charge mode.
During the equalize-charge mode the charging voltage still equals the boost voltage, but
the charge current slowly decreases. The duration of this mode is pre-selectable and may
be set to 4, 8 or 12 hours. The standard time of the equalize-mode is 4 hours. After this
time the Skylla-TG charger automatically switches back to the float-charge mode.
In the float-charge mode the charge voltage decreases to the float voltage and the charge
current continues to decrease. This mode lasts for 20 hours.
After the float-charge mode the charger returns to the equalize-charge mode for 30
minutes, this is to compensate for the normal leakage or self discharge of the battery.
Illustration 1.
The IUoUo charge
characteristic.

8 Manual Skylla with universal input
The Skylla-TG charger can remain connected to the battery continuously, without gas
formation taking place, caused by overcharging. It is not necessary to disconnect the
battery from the charger during long time storage, for example during the winter storage
of a ship. The Skylla-TG charger will keep your battery in optimum condition under all
circumstances and will prolong the lifetime of your battery.
A parallel load connected to the battery can cause a voltage drop. The Skylla-TG charger
automatically switches into the boost-charge mode when the battery voltage drops
below the minimal voltage.
The Skylla-TG charger is equipped with a separate starter-battery connection to charge an
extra battery, like a starter-battery. You can use this battery for starting machines, like a
boat engine for this application.
The Skylla-TG charger has a stabilised output voltage. Therefore the Skylla-TG charger can
also be used as a D power supply in applications where no battery is present.
2.2 The battery
The Skylla-TG charger can charge various batteries. The recommended battery capacity is
indicated in the table below:
Type
Recommended capacity
24
V
/
30A
100
–
200 Ah
24
V
/
50A
200
–
400 Ah
24
V
/
100
A
-
G
500
-
1000 Ah
The charge voltages of the Skylla-TG charger are factory-set. Most battery manufacturers
recommend these charging voltages for optimal charging of 24V or 48V lead-acid
batteries.
It is possible to charge different types of batteries, like traction batteries. To charge these
batteries the charging voltages of the charger have to be changed. ontact your Victron
Energy dealer or battery dealer for more details about the recommended charging
voltages.

Manual Skylla with universal input 9
2.3 Protection
The battery charger is safe to use due to its robust design and its internal electronic
protection. This chapter describes the various internal electronic protective devices.
Maximum charge current protection
 The battery charger provides a maximum charge current of 30A for the 30A charger,
50A for the 50A charger or 100A for the 100A charger.
This level is electronically limited and is factory set.
 The maximum output current can also be limited by using an external potentiometer-
panel, the Victron Energy OV panel.
Short circuit protection
 The charger output is protected against short-circuits. The short-circuit current is
electronically limited at 30A, 50A or 100A, according to the model. In this condition
the output voltage approaches 0 Volt. The battery charger resumes normal operation
when the short circuit is removed.
 The short circuit current can also be reduced by the Victron Energy OV panel.
Input protection
 The charger mains-input is protected with a fuse.
 The charger will not be damaged by using input voltage between 0 and 300 Vac.
 The charger will not be damaged by using input frequency between 0 and 65 Hz.
Over voltage protection
 The charger switches off automatically when the battery voltage becomes higher
than the over voltage value. The charger switches back on when the battery voltage
becomes less than the raise value. See the table below.
Model
Over voltage value
Raise v
alue
24V
35,5 Vdc
33,5 Vdc
 The charger output is protected with a fuse.
Starter battery protection
 The output current of the starter battery output is electronically limited at 4A. The
starter battery output is also protected against wrong connections by means of a 10A
fuse.

10 Manual Skylla with universal input
Temperature protection
 The internal temperature of the charger is measured continuously. However, due to
a high ambient temperature outside the cabinet, the temperature within the
battery charger can rise. When the external temperature of the battery charger
becomes higher than 40° , the output current decreases and the Failure led flashes.
 Before the internal temperature becomes too high due to extreme conditions the
charger switches off and the Failure LED illuminates continuously. The charger
resumes operation when the internal temperature is restored within limits.
Voltage sense protection
 When the voltage sense facility is used the charger automatically decreases the
output voltage when the voltage loss over the battery cables is more than 2 Volt in
total.
Battery watchdog timer
 The charger is equipped with a battery watchdog timer. This timer measures the
duration of the boost mode. The moment the boost mode lasts longer than 10
hours, the charger will switch to float mode. The charging voltage will then become
the float voltage. In this way it is prevented that a defective battery is needlessly
charged with a high charging voltage.

Manual Skylla with universal input 11
3. DIRECTIONS FOR USE
3.1 Installation
Find a dry and well-ventilated area to mount the Skylla charger and battery. Keep the
distance between the charger and the battery less than 6 meters.
The charger may be wall or floor mounted. Mounting on a wall improves the air
circulation within the charger cabinet and will prolong the lifetime of the battery charger.
The holes for the mains cable, the battery connections, the remote connections and the
earth connection are located at the bottom of the battery charger housing, see
illustration 2.
Connecting earth
onnect the earth screw to a real earth-point. onnections to earth have to be according
to applicable safety standards.
 On a ship: onnect the earth screw to the earth plate or to the hull of the ship.
 On land: onnect the earth screw to the earth of the mains.
 Mobile applications (a vehicle, a car or a caravan): onnect the earth screw to the
frame of the vehicle.
Connecting the battery
The connections between the Skylla charger and the battery are essential for a good
operation of the charger. Therefore the battery connections need tightening well. It is
important to use short and thick battery cables to minimise the voltage losses in the cable.
able resistance decreases accordingly as the cables become shorter and thicker.
Therefore it is not recommended to use cables longer than 6 meters. The table below
shows the recommended cable core thickness.
Type core diameter of cables until 1,5m core diameter of cables between 1,5m and 6m
24/30 6 mm
2
10 mm
2
24/50 10 mm
2
16 mm
2
24/100 35 mm
2
50 mm
2
Illustration 2,
Location of the charger
connection holes
Hole for the
negative
battery cable
Hole for the
positive
battery cable
M6 Earth
stud
Hole for the
mains cable Hole for the starter
battery cables
Hole for the
remote cable

12 Manual Skylla with universal input
- starter battery connection
+ starter battery connection
Green led
Negativ
e battery connection
Output fuses
Positive battery connection
Red led
Connection tool
The battery connection sequence
 heck if the charger is switched off and if the mains supply is disconnected.
 Remove the front of the battery charger to access the battery connections.
 If not placed, place the connection tool to the negative battery connection (-) of the
charger, see illustration 3.
 onnect the positive battery-cable (+) to the positive battery connection terminal on
the charger printed circuit board, see illustration 3.
 Hook the negative battery-cable (-) to the connection tool, see illustration 3.
 heck if the green led illuminates, see illustration 3. If not the positive and negative
battery cables have been reversed.
 Disconnect the connection tool and connect the negative battery cable (-).
The battery disconnection sequence
 Switch off the charger.
 Disconnect the mains supply.
 Disconnect the negative battery-cable.
 Disconnect the positive battery-cable.
The Skylla is NOT protected against reverse battery polarity.
("+" connected to "-" and "-" connected to "+").
Follow the installation procedure. The warranty expires when the
Skylla becomes defective due to reverse polarity.
Disconnect the mains supply
before making or breaking
connections to the battery.
Illustration 3.
Location of the battery
connections
The on/off switch at the
front of the cabinet does n
ot
switch off the mains supply.

Manual Skylla with universal input 13
Connecting the starter battery
The starter battery has to be connected using wire with a core of at least 1.5 mm
2
.
 onnect the positive (+) battery-pole to the right side of the starter battery
connector, see illustration 3.
 onnect the negative (-) battery-pole to the left side of the starter battery connector,
see illustration 3.
Connecting the mains
 heck if the battery is already connected to the charger.
 Remove the front of the battery charger to access the A input connector.
 onnect the mains PE cable (green/yellow) to the A input connector located on the
circuit board, see illustration 4.
 onnect the mains neutral cable (blue) to the A input connector.
 onnect the mains line cable (brown) to the A input connector.
 Plug the mains cable into the mains socket. Make sure that the mains socket is
connected to earth. The connection to the earth of the mains has to be according to
applicable safety standards.
Illustration 4.
Location of the
AC input connector.
AC input connector
N L
PE connection
neutral connection
line connection

14 Manual Skylla with universal input
3.2 Operation
Located on the front of the Skylla charger are an on/off switch and three rows of leds, as
shown in illustration 5.
The battery charger can be switched on and off with the on/off switch.
The “output voltage” leds indicate the output voltage value.
The “output current” leds indicate the output current value.
The other leds indicates the state of the charger.
The operation sequence
Switching the charger on with the on/off switch results in the following:
 The “on” led will flash for about 2 seconds. In these first 2 seconds the charger reads
all input signals and calculates the necessary output voltage. After 2 seconds the
charger will switch on and the “on” led illuminates.
 According to the condition of the battery the charger will start in the boost-charge
mode or at float-charge mode. If the battery is not full the “boost” led illuminates and
the charger will start boost-charging the battery.
 A dip switch can be used to set the charger so that it will always start charging in
the boost mode, irrespective of the condition of the battery.
 When the battery voltage has reached the boost voltage the charger will change into
the equalize-charge mode and the “equalize” led illuminates. This mode will last for a
pre-selectable time of 4, 8 or 12 hours.
Illustration 5. Example of the battery charger front panel.
victron energie
ACCULADER
AUTOMATIL-LADER
BATTERY CHARGER
CHARGEUR AUTOMATIQUE
Output
voltage (V)
Output
current (A)
30
29
28
27
26
25
24
23
112
100
84
70
56
42
28
14
on
boost
equalize
float
failure
on
off
Explosive gasses can occur during charging a lead-acid
battery. Prevent flames and sparks.
Provide adequate ventilation during charging.

Manual Skylla with universal input 15
 After this time the charger will enter the float-charge mode and the “float” led will
illuminate.
After the batteries are charged the Skylla charger does not have to be switched off and
the batteries can stay connected to the battery charger.
3.3 Maintenance
The Skylla charger does not require any specific maintenance. However an annual check
of the battery connections is recommended.
Keep the charger dry, clean and free of dust. If any problems arise, use the fault finding
procedure to trace the fault, see chapter 5.

16 Manual Skylla with universal input
4. OPTIONS
The Skylla charger is factory set to standard values. Some of these standard values can
be changed by a qualified electrical technician into customised values. This chapter
describes which values can be changed and how to change them.
Opening of the battery charger cabinet
In order to change the standard values the front of the charger has to be removed.
 Disconnect the mains from the charger and wait two minutes.
 Unscrew the 4 screws on the front of the cabinet, see illustration 6.
 Remove the front panel of the battery charger.
Adjustments can be made by means of turning a potentiometer or by changing the
position of a switch on the DIP-switch.
See illustration 7 for the location of the DIP-switch and the potentiometers.
Illustration 6.
emoving the front.
Attention ! The value of the potentiometers I, Vboost and Vfloat
may only be adjusted by a qualified electrician. The remaining
potentiometers may not be adjusted at any case.
Illustration 7.
Location of the DIP-switch and potentiometers.
DIP switch
I
Vboost
Vfloat
The cover of the Skylla may only be removed by a qualified
technician. Before obtaining access to the Skylla the mains supply
circuit must be disconnected.
There is a dangerous voltage present on some of the metal parts
inside the battery charger.

Manual Skylla with universal input 17
4.1 Permanent boost-charge
In some cases, for example when the battery is almost empty, it is recommended to
permanent boost-charge the battery for 10 hours. Do not permanently boost-charge
sealed lead-acid batteries. ontact your Victron Energy dealer or battery dealer for more
information on charging the battery.
To set the charger into the permanent boost-charge mode
 Place the DIP switch number 8 “R boost” to the left. In this mode
the battery is being charged to the boost voltage.
 Do not permanent boost-charge the battery for longer than 10
hours as this can cause long term gas formation in the battery and
will damage the battery.
 While a battery is being boost-charged, check the water level of
the battery frequently and if necessary add distilled water to the
battery.
4.2 Adjusting the charge voltage
The battery charger has a factory set float and boost voltage. The boost-voltage is always
higher than the float-voltage. These charging voltages are the recommended values
from almost every battery manufacturer. Before adjusting the charge voltage disconnect
the temperature sensor and/or the voltage sense wires.
To change the float-voltage
 Remove all batteries and other users that are connected to the
output of the battery charger.
 Plug the A plug into the mains and switch on the charger.
 Place DIP-switches 7 “Eq2” and 6 “Eq1” to the left position, this will
reduce the equalize time to 0 hours. The charger switches into the
float-charge mode.
 Place DIP-switch 4 “fine” to the left position in order to accurately
adjust the output voltage.
 Measure the float-voltage on the charger output by using a precision
voltage meter.
 Adjust the float-voltage by turning the “V float” potentiometer until
the recommended voltage is reached.
 orrect the equalize time by moving DIP-switch 7 “Eq2” and 6 “Eq1”.
 Place DIP-switch 4 “fine” to the right position. In this position the
output voltage is less sensitive to influence of temperature.

18 Manual Skylla with universal input
To change the boost-voltage
 Place DIP-switch 7 “Eq2” to the right and place DIP-switch 8 “R boost”
to the left. The charger switches into the boost-charge mode.
 Place DIP-switch 4 “fine” to the left position in order to accurately
adjust the output voltage.
 Measure the boost-voltage on the charger output by using a
precision voltage meter.
 Adjust the boost-voltage by turning the “V boost” potentiometer
until the recommended voltage is reached.
 Replace DIP-switch 8 “R boost” to the right.
 orrect the equalize time by moving DIP-switch 7 “Eq2” and 6 “Eq1”.
 Place DIP-switch 4 “fine” to the right position. In this position the output
voltage is less sensitive to influence of temperature.
4.3 Adjusting the equalize-charging mode time
The duration of the equalize-charge mode can be changed to fit the specifications of
the battery. The duration of the equalize-charge mode can be set to 0, 4, 8 or 12 hours.
When selecting 0 hours, the charger will skip the equalize-charge mode and will directly
switch into the float-charge mode. The standard equalize-time is 4 hours.
According to the table below the duration of the equalize-charge mode can be set by
moving the DIP-switches 7 “Eq2” and 6 “Eq1” in the corresponding way:
4.4 Diode-splitter charge voltage compensation.
If a diode-splitter (Victron Energy Argo) is connected to the Skylla
charger the charge voltage have to be raised to compensate for the
voltage loss over the diode-splitter.
If the voltage-sense option is used, do not use the diode-splitter
compensation. When both options are used simultaneously the
output voltage will be too high.
To select the diode-splitter option:
 Place DIP switch 5 “split” to the left.
0 hours 4 hours 8 hours 12 hours

Manual Skylla with universal input 19
4. Traction battery compensation
If a Traction-battery is connected to the Skylla charger the charge
voltages have to be changed. The output voltage has to be raised to
correctly charge the traction-battery. It is possible that the charge
voltages are not correct after activating this compensation. See for
adjusting the charge voltages chapter 4.2.
To set the charger into the traction mode
 Place DIP-switch 3 “trac” to the left.
4.6 Use as a power-supply
The Skylla charger can be used as a power supply without the obligation to connect a
battery to the charger output.
To use the charger as a power supply
 Put the charger into the permanent boost-charge mode, see chapter 4.1.
 Adjusted the output voltage to the desired voltage, see chapter 4.2.
With the above mentioned procedure the output voltage range is limited. When the full
output voltage range is required please contact your Victron Energy dealer. See chapter
6.3 for details.
4.7 Use of a temperature sensor.
The temperature sensor supplied with the charger can be
connected to the charger by using the 3 meter cable with
stripped and tinned cable ends. This sensor should be
mounted on the battery. The temperature sensor adjusts
the charging voltage according to the battery
temperature.
To connect the temperature sensor
 Disconnect the mains,
 onnect the - (black wire) of the temperature sensor
to the “-tmp” connector, see illustration 8.
 onnect the + (red wire) of the temperature sensor to
the “+ tmp” connector, see illustration 8.
 Switch on the mains.
 If the temperature sensor is correctly connected the
“TMP OK” on the printed circuit board led illuminates.
If this led does not illuminate or flashes, the sensor is
not connected correctly.
Illustration 8.
Location of the external connections.

20 Manual Skylla with universal input
4.8 Charging batteries with voltage sensing
When high current runs trough a thin cable between the charger and the battery there
will be a voltage loss in the cables. The charging voltage measured at the battery poles
will be lower than the specified voltage and this will result in a longer charging time.
However, the charger is equipped with a voltage sense facility. The battery voltage is
exactly measured and the charger increases the output voltage to compensate for the
voltage loss across the cables.
The charger can compensate for a maximum of 2V voltage loss over the cables. When
the voltage loss is bigger than 2V the “on” led flashes and the failure led illuminates. The
charge voltage will decrease until the voltage loss becomes maximum 2 Volt. The “on”
led flashes and the failure led illuminates until the charger is manually switched off.
When this occurs the battery cables have to be replaced because they are too thin or
have bad connections.
To install the voltage sense option
 Disconnect the mains.
 onnect a red 0,75 mm
2
wire to the positive battery pole and the “+Vse” connector
of the charger, see illustration 8.
 onnect a black 0,75 mm
2
wire between the negative pole of the battery and the “-
Vse” connector of the charger, see illustration 8.
 For properly functioning both wires have to be connected.
 Switch on the mains.
 The “VSE OK” led on the printed circuit board illuminates when connected
correctly. If this led does not illuminate the voltage sense wires are wrongly
connected.
4.9 Intelligent startup
The factory setting of the charger is such that the battery voltage is
checked when the charger is switched on (intelligent startup). In the
case of a flat battery, the charger will start charging in the boost mode.
If the battery voltage is sufficiently high during charger startup, the
charger will be charging in the float mode.
In some situations it may be desirable for the charger not to check the
battery voltage upon startup. With this charger this function is
enabled by sliding dip switch 2 “Watch” to the left.
When this dip switch is positioned on the left, the charger will always
start charging in the boost mode.
Do not use the voltage sense facility in combination with the
diode-splitter compensation, as this will raise the output voltage.