victron energy 24-80 Battery Charger User Manual

24-80 Battery Charger

Product Information

Specifications

Manufacturer: Victron Energy

Model: Skylla-TG

Available Models: Skylla-TG 24/80, Skylla-TG 24/100, Skylla-TG
24/100 3-Phase, Skylla-TG 48/50

Description

The Skylla-TG chargers are battery chargers designed and
manufactured by Victron Energy. These chargers are equipped with
protective devices and other technical features to ensure safe and
efficient charging of lead-acid batteries.

Warnings

• The cover of the battery charger should only be removed by a
  qualified technician. Prior to accessing the battery charger, the
  mains supply circuit must be disconnected.

• Explosive gases can be produced during the charging of a
  lead-acid battery. It is important to prevent flames and sparks and
  ensure adequate ventilation during charging.

• The battery charger is not suitable for charging
  non-rechargeable batteries.

• A dangerous voltage is present on some internal parts of the
  battery charger. Caution should be exercised when handling the
  unit.

• The battery charger is not protected against reverse battery
  polarity. It is essential to follow the installation procedure to
  avoid damage to the charger. The warranty will be void if the
  charger becomes defective due to reverse battery polarity.

Product Usage Instructions

1. Installation

To install the Skylla-TG charger, follow these steps:

1. Ensure that the mains supply circuit is disconnected before
   proceeding with the installation.

2. Select a suitable location for the charger, ensuring proper
   ventilation and protection from moisture.

3. Connect the charger to the battery using appropriate cables and
   connectors. Ensure the correct polarity is maintained.

4. Connect the charger to the mains power supply using a suitable
   power cable.

5. Once all connections are secure, restore the mains supply and
   verify that the charger is receiving power.

2. Operation

To operate the Skylla-TG charger, follow these steps:

1. Ensure that the charger is properly installed and connected to
   a suitable battery.

2. Turn on the charger using the power switch or button, if
   available.

3. Monitor the charging process and ensure that the charger is
   functioning correctly.

4. Adjust any settings or parameters as required, following the
   instructions provided in the manual.

5. Once the battery is fully charged, disconnect the charger from
   the mains power supply and remove the connections to the
   battery.

3. Maintenance

Regular maintenance of the Skylla-TG charger is important to
ensure optimal performance and longevity. Follow these
guidelines:

• Inspect the charger regularly for any signs of damage or
  wear.

• Clean the charger’s exterior using a soft cloth and mild
  detergent, if necessary.

• Ensure that all connections are tight and secure.

• Check the charger’s cooling system for any obstructions or
  buildup of dust or debris. Clean if necessary.

• Refer to the manual for any specific maintenance procedures
  recommended by the manufacturer.

FAQ

Q: Can the Skylla-TG charger be used to charge non-rechargeable

batteries?

A: No, the Skylla-TG charger is specifically designed for
charging lead-acid rechargeable batteries and should not be used
with non-rechargeable batteries.

Q: Is the battery charger protected against reverse battery

polarity?

A: No, the battery charger is not protected against reverse
battery polarity. It is important to follow the installation
procedure to avoid damage to the charger. The warranty will be void
if the charger becomes defective due to reverse battery
polarity.

Q: What should I do if I encounter a fault or issue with the

Skylla-TG charger?

A: Refer to the “Fault Tracing” section in the manual for
guidance on troubleshooting common issues. If the problem persists,
contact a qualified technician or the manufacturer for further
assistance.

Victron Energy
USER MANUAL GEBRUIKSAANWIJZING GEBRAUCHSANWEISUNG
SKYLLA-TG 24/80 SKYLLA-TG 24/100 SKYLLA-TG 24/100 3-Phase SKYLLA-TG 48/50

SECTIONS
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Page
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Manual Skylla-TG

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Copyrights 2004 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.

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Victron Energy Manual Skylla-TG

USER MANUAL
SKYLLA-TG 24/80 SKYLLA-TG 24/100 SKYLLA-TG 24/100 3-Phase SKYLLA-TG 48/50

Manual Skylla-TG

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USER MANUAL SKYLLA-TG CHARGERS

1. INTRODUCTION

5

1.1 Victron Energy

5

1.2 The Skylla-TG chargers

5

1.3 Warnings

5

2. DESCRIPTION

7

2.1 The Skylla-TG battery charger

7

2.2 The battery

8

2.3 Protection

9

3. DIRECTIONS FOR USE

11

3.1 Installation

11

3.2 Operation

15

3.3 Maintenance

16

4. OPTIONS

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4.1 Permanent boost-charge

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4.1 Permanent boost-charge

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4.2 Adjusting the charge voltage

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4.3 Adjusting the equalize-charging mode time

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4.4 Diode-splitter charge voltage compensation.

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4.5 Traction battery compensation

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4.6 Use as a power-supply

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4.7 Use of a temperature sensor.

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4.8 Charging batteries with voltage sensing

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4.9 Intelligent startup

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4.10 Connecting the output voltage alarm

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4.11 Connecting remote panels

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4.12 Connecting a remote on/off switch

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4.13 Connecting a remote boost switch

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4.14 Connecting a voltmeter

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4.15 Connecting a ampèremeter

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5. FAULT TRACING

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6. TECHNICAL SPECIFICATIONS

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6.1 General

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6.2 Input

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6.3 Output

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6.4 Mechanical

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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-TG chargers
This manual contains directions for installing the following chargers: Skylla- TG 24/80, Skylla-TG 24/100, Skylla-TG 24/100 3-Phase and the Skylla-TG 48/50. It describes the functionality and operation including their protective devices and other technical features.
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.
There is a dangerous voltage present on some oMf athneuaml eTtaitlapnaprtasge 5 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.
The on/off switch at the front of the cabinet does not switch off the mains supply.
Disconnect the mains supply before making or breaking the connections to the battery.
Do not use the voltage sense facility in combination with the diodesplitter compensation. This will raise the output voltage, which could damage the battery.

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2. DESCRIPTION
2.1 The Skylla-TG battery charger
The TG battery charger is a fully automatic charger for 24V or 48V batteries and is powered by a mains voltage of 230Vac, 50Hz. It charges the battery according to the IUoUo characteristic, which is a 3-stage charging characteristic. This characteristic is shown in illustration 1. While charging, the TG continuously measures the battery voltage and current and bases the charging voltage and current on the measured values.

Illustration 1. The IUoUo charge characteristic.

Type
24V / 80A 24V / 100A 24V / 100A 3-Ph 48V / 50A

Boost voltage
28,5 Vdc 28,5 Vdc 28,5 Vdc 57 Vdc

Float voltage
26,5 Vdc 26,5 Vdc 26,5 Vdc 53 Vdc

Minimal voltage 25 Vdc 25 Vdc 25 Vdc 50 Vdc

Assuming that the battery is discharged, the TG charger starts 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 TG charger automatically switches to the equalizecharge mode. During the equalize-charge mode the charging voltage stays the same as the boost voltage but the charge current slowly decreases. The duration of this mode is pre-selectable to 4, 8 or 12 hours. The standard time of the equalize- mode is 4 hours. After this time the TG charger automatically switches into the float-charge mode. In the float-charge mode the charge voltage changes into 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.

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The 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 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 TG charger automatically switches into the boost-charge mode when the battery voltage drops below the minimal voltage. The 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 TG charger has a stabilised output voltage. Therefore the TG charger can also be used as a DC power supply in applications where no battery is present.

2.2 The battery

The TG charger can charge various batteries. The recommended battery capacity is indicated

in the table below:

Type

Recommended capacity

24/80

300 – 600 Ah

24/100

500 – 1000 Ah

24/100 3-Ph

500 – 1000 Ah

48/50

200 – 400 Ah

The charge voltages of the TG charger are factory set. Most battery manufactures 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. Contact your Victron Energy dealer or battery dealer for more details about the recommended charging voltages.

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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 50A for the 50A charger,
80A for the 80A 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 potentiometerpanel, the Victron Energy COV panel.

Short circuit protection The charger output is protected against short- circuits. The short-circuit current is
electronically limited at 50A, 80A 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 COV 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 voltage 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 24V 48V

Over voltage value 35,5 Vdc 68,1 Vdc

Raise value 33,5 Vdc 64.1 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.

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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°C, 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.

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3. DIRECTIONS FOR USE
3.1 Installation
Find a dry and well-ventilated area to mount the TG 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.

Hole for the remote cable
Hole for the positive battery cable

Illustration 2, Location of the charger connection holes

Hole for the mains cable
M6 Earth Stud

Hole for the starter battery cables

Hole for the negative battery cable

Connecting earth Connect the earth screw to a real earth-point. Connections to earth have to be according to applicable safety standards. On a ship: Connect the earth screw to the earth plate or to the hull of the ship. On land: Connect the earth screw to the earth of the mains. Mobile applications (a vehicle, a car or a caravan): Connect the earth screw to the frame
of the vehicle. v
Connecting the battery The connections between the TG 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. Cable 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 24/80 24/100 24/100 3-Ph 48/50

core diameter of cables until 1,5m 16 mm2 35 mm2 35 mm2 10 mm2

core diameter of cables between 1,5m and 6m 25 mm2 50 mm2 50 mm2 16 mm2

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The battery connection sequence
The Titan is NOT protected against reverse battery polarity. (“+” connected to “-” and “-” connected to “+”). Follow the installation procedure. The warranty expires when the Titan becomes defective due to reverse polarity.

Disconnect the mains supply before making or breaking the connections to the battery.

The on/off switch at the front of the cabinet does not switch off the mains supply.

Check 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. Connect 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. Check 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.

– starter battery connection

+ starter battery connection

Green led

Negative battery connection

Output fuses

Illustration 3.

Positive battery connection

Location of the battery

Red led

connections

Connection tool

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Manual Skylla-TG

Connecting the starter battery The starter battery has to be connected using wire with a core of at least 1.5 mm2. Connect the positive (+) battery-pole to the right side of the starter battery connector, see
illustration 3. Connect the negative (-) battery-pole to the left side of the starter battery connector, see
illustration 3.

Connecting the mains Check if the battery is already connected to the charger. Remove the front of the battery charger to access the AC input connector. Connect the mains PE cable (green/yellow) to the AC input connector located on the
circuit board, see illustration 4. Connect the mains neutral cable (blue) to the AC input connector. Connect the mains line cable (brown) to the AC 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.

AC input connector

N L

Illustration 4. Location of the AC input connector.

PE connection neutral connection
line connection

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illustration 4b Connecting the 3phase mains Check if the battery is already connected to the charger. Remove the front of the battery charger to access the AC input connector. Connect the mains PE cable (green/yellow) to the AC input connector located next to the
Magnetic Circuit Breaker, see illustration 4b. Connect the 3 mains line cables to the Magnetic Circuit Breaker. 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.

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3.2 Operation
Located on the front of the TG 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.

Illustration 5. Example of the battery charger front panel.
The operation sequence:
Explosive gasses can occur during charging a lead-acid battery. Prevent flames and sparks. Provide adequate ventilation during charging.

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 preselectable time of 4, 8 or 12 hours. After this time the charger will enter the float-charge mode and the “float” led will illuminate.

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After the batteries are charged the TG charger does not have to be switched off and the batteries can stay connected to the battery charger.
3.3 Maintenance
The TG 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.

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4. OPTIONS
The TG 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.
The cover of the Titan may only be removed by a qualified technician. Before obtaining access to the Titan the mains supply circuit must be disconnected.
There is a dangerous voltage present on some of the metal parts inside the battery charger.
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.
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. Removing the front.

DIP switch

I Vboost Vfloat
Illustration 7. Location of the DIP-switch and potentiometers.

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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. Contact 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 AC 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. Correct 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.

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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. Correct 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:

0 hours 4 hours 8 hours 12 hours
4.4 Diode-splitter charge voltage compensation.
If a diode-splitter (Victron Energy Argo) is connected to the TG 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.

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4.5 Traction battery compensation
If a Traction-battery is connected to the TG 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 TG 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, Connect the – (black wire) of the temperature sensor
to the “-tmp” connector, see illustration 8. Connect 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.

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4.8 Charging batteries with voltage sensing
Do not use the voltage sense facility in combination with the diodesplitter compensation, as this will raise the output voltage.

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. Connect a red 0,75 mm2 wire to the positive battery pole and the “+Vse” connector of
the charger, see illustration 8. Connect a black 0,75 mm2 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. When dip switch 2 “Watch” is positioned on the right, it is checked upon startup whether the battery voltage is sufficiently high to enable a start in the float mode. If it is not, the charger is started in the boost mode as yet.

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4.10 Connecting the output voltage alarm
The charger is equipped with a potential free alarm contact (change over type). If the battery voltage is in between Vmin and Vmax the contact is activated. (See figure 8, remote connections: NO, NC, COM).

Model 24V 48V

Vmin 23,8 Vdc 47,6 Vdc

Vmax 33,5 Vdc 67 Vdc

4.11 Connecting remote panels
Victron Energy provides four optional remote panels that can be connected to the charger. See illustration 8 for the circuit board connector where the remote panels have to be connected to.

The COV panel: The maximum charging current of 50A, 80A or 100A, according to the model, can be limited with an external panel. This panel, the Victron Energy COV panel, contains an adjustable potentiometer. Limiting the maximum charging current can be useful to meet the batteries specifications, or to make sure the shore fuse does not blow.

To connect the panel: Disconnect the mains. Connect the panel to the “+ pot” and “-pot” connector.

The CMV panel: This panel indicates the charging mode and possible failures.

To connect the panel: Disconnect the mains. Connect the boost led to the ” L_BO” connector. Connect the equalize led to the “L_EQ” connector. Connect the float led to the “L_FL” connector. Connect the failure led to the “L_FA” connector. Connect the ground of the panel to the “GND” connector.

The CSV panel: With the CSV panel the charger can be switched on or off. On the panel a green “on” led is present. To operate the CSV panel you first have to switch the charger on with the on/off switch located on the front panel of the charger.

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Manual Skylla-TG

To connect the panel: Disconnect the mains Connect the on led to the “L_ON” connector. Connect the ground of the panel to the “GND” connector. Connect the “TG switch” to the “REM” connector.
The SKC panel: This panel indicates if the charger is on or off, it indicates the charging mode and it contains an adjustable potentiometer. Limiting the maximum charging current can be useful to more accurately charge the batteries according the manufacturers specifications, or to make sure the shore fuse does not blow.
To connect the panel: Disconnect the mains. Connect the on led to the “L_ON” connector. Connect the boost led to the ” L_BO” connector. Connect the float led to the “L_FL” connector. Connect the ground of the panel to the “GND” connector. Connect current control to the “+ POT” and “-POT” connector.
4.12 Connecting a remote on/off switch
A remote switch can be connected to the charger so the charger can be switched on and off from a remote location. To operate the switch, first switch the charger on with the on/off switch located on the charger.
To connect the remote on/off switch: Disconnect the mains. Connect the switch in between the “REM” and the “GND” connector.
4.13 Connecting a remote boost switch
A remote switch can be connected to the charger so the charger can be switched permanently into the boost-charge mode. Due to parallel loads connected to the battery it is advised to switch the charger into the permanent boost-charging mode in order not to discharge the battery. If the switch is closed the charger switches into the permanent boost-charge mode. If the switch is opened again the charger will automatically go to the float-charge mode. This in order not to overcharge a battery with charging it to long with higher charging voltage.
To connect the boost switch: Disconnect the mains. Connect one pole of the switch to the “RBOO” connector. Connect the other pole of the switch to the “GND” connector.

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4.14 Connecting a voltmeter
The remote-connector offers a possibility to connect a voltmeter. It is possible to connect a digital as well as an analogue voltmeter. This output can only be used when the voltagesense is connected. The voltage at this output is equal to the voltage measured at the point where the voltage sense wires are connected.
Connecting a voltmeter Disconnect the mains voltage. Make sure that the voltage sense wires are connected, see chapter 4.8. Connect a black wire between the “-” connection of the voltmeter and “-VM” at the
remote connector. Connect a red wire between the “+” connection of the voltmeter and “+VM” at the
remote connector. Connect the mains voltage.
4.15 Connecting a ampèremeter
The remote connector offers a possibility to connect an ampèremeter, which indicates the output current of the charger. For the 50A charger an ampèremeter, which indicates 50A at 60mV input voltage is required. For the 80A charger an ampèremeter, which indicates 80A at 60mV input voltage is required, likewise for the 100A charger an ampèremeter, which indicates 100A at 60mV input voltage is required.
Connecting an ampèremeter Disconnect the mains voltage. Connect a black wire between the “-” connection of the ampèremeter and “-AM” at
the remote connector. Connect a red wire between the “+” connection of the ampèremeter and “+AM” at the
remote connector. Connect the mains voltage.

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Manual Skylla-TG

5. FAULT TRACING

When a fault occurs in the battery charger, the following table can be used in order to find the

fault. Before the TG is being checked, make sure that all the devices connected to the battery

charger are removed. If the fault can not be solved contact your Victron Energy dealer.

Problem

Possible cause

Solution

The charger does not The mains voltage has to be in between Measure the mains voltage and make sure it is in

operate

185Vac and 265 Vac.

between 185Vac and 265Vac.

A broken input fuse.

Return the charger to your dealer.

The battery is not The equalize-charge mode is set to being fully charged a too short period.

Set the equalize-charge mode to a longer time.

A bad battery connection.

Check the battery connections.

The boost charge voltage is set to a wrong value.

Adjust the boost charge voltage to the right value.

The float charge voltage is

Adjust the float charge voltage to the right

set to a wrong value.

value.

The capacity of the battery is too large. Connect a battery with a smaller capacity or

install a larger charger.

The output fuses are broken.

Replace the output fuses.

The battery is being overcharged
The failure led illuminates The failure led flashes The failure led flashes in a code1 The failure led illuminates in combination with a blinking on/off led

The battery charger is set into the permanent boost-charge mode.

Deselect the permanent boost DIP-switch (Rboost).

The boost charge voltage is set to a wrong value. The float charge voltage is set to a wrong value. A bad battery. The battery is located in a warm place

Adjust the boost charge voltage to the right value. Adjust the float charge voltage to right value.
Check the battery. Connect a temperature sensor

The battery is too small.

Reduce the charge current.

The charger is switched off as a result of a high ambient temperature.
The charger is reducing the output current as a result of a high ambient temperature. The output fuses are broken.

Place the charger in a cooler, or better ventilated place. Place the charger in a cooler, or better ventilated place.
Replace the output fuses.

There is a voltage drop higher than 2V Turn the charger off, replace battery cables and

across the battery cables.

connect them well.

A qualified technician may only remove the cover of the Titan. Before obtaining access to the Titan the mains supply circuit must be disconnected.

1Flashing code sequence is two times on in one second and then one second off.

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6. TECHNICAL SPECIFICATIONS

6.1 General
Switch on behaviour Efficiency 24/80
24/100 48/50 Temperature range
EMC Emission
Immunity Vibration Safety

Charger can switch on under every load 85 % at 230Vac and 30Vdc 80A 85 % at 230Vac and 30Vdc 100A 85 % at 230Vac and 60Vdc 50A 0 °C until +40 °C, decreasing output power if temperature > +40ºC According Council Directive 89/336 EEG EN 55014 (1993) EN 61000-3-2 (1995) EN 61000-3-3 (1995) EN 55104 (1995) IEC 68-2-6 (1982) EN 60335-2-29 (1991)

6.2 Input

Input voltage range

Input voltage range 3-Ph

Frequency range

Maximum Input current

model:

24/80

24/100

24/100 3-Ph

48/50

Input fuse

model:

24/80

24/100,48/50

24/100 3-Ph

Cos phi / power factor

185 – 265 Vac,

full output power available

320 – 460 Vac 3-Ph, full output power available

45 – 65 Hz,

full output power available

At 230V ac input voltage :

12A at 30V / 80A

16A at 30V / 100A

3x 6A at 30V / 100A

16A at 60V / 50A

250Vac/8A and 12A fast 6,3x32mm, or equivalent 2 x 250Vac /12A fast 6,3x32mm, or equivalent 2 x 250Vac /12A fast 6,3x32mm, or equivalent and 3-Ph MCB 6A B 1,0

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Manual Skylla-TG

6.3 Output
Model

TG 24/80

Boost charge voltage Float charge voltage Output voltage range Output voltage range supply mode2 Charge characteristic Voltage compensation for diode- splitter, via DIP-switch

28,50 Vdc 26,50 Vdc 24-33Vdc 0-33Vdc
IUoUo + 0,6 V

TG 24/100 TG 24/100 3-Ph

TG 48/50

28,50 Vdc 26,50 Vdc 24-33Vdc 0-33Vdc

57 Vdc 53 Vdc 48-66Vdc 0-66Vdc

IUoUo + 0,6 V

IUoUo + 0,6 V

Model

TG 24/80

Current/voltage stability

± 1 %

Boost charge voltage

compensation for traction

+ 2,0 V

battery, via DIP-switch

Maximum output current

80A

Output current range

0-80A

Output voltage ripple

measured with a 50A, 80A or <100mVtt

100A resistive load

Maximum output power

2250W

Short circuit current

80A

Maximum starter battery

4A

current

Low battery alarm relay

23,8 Vdc

±0,8Vdc

High battery alarm relay

33.5Vdc

± 0,8Vdc

Output fuse (flat car fuse)

6 x 20A

Leakage current from battery

when the battery charger is 6,4 mA

turned off

• 6,3mm x 32mm fuse 30A slow

TG 24/100 TG 48/50

± 1 %

± 1 %

+ 2,0 V

+ 4,0 V

100A 0-100A

50A 0-50A

<100mVtt <200mVtt

3000W 100A 4A

3000W 50A n/a

23,8 Vdc ±0,8Vdc 33.5Vdc ± 0,8Vdc 8 x 20A

47,6 Vdc ±1,6Vdc 67 Vdc ± 1,6Vdc other *

6,4 mA 6,4 mA

2 Contact your Victron Energy dealer for this option.

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6.4 Mechanical

TG 24/80 TG24/100 TG48/50

TG 24/100 3-Ph

Cabinet Protection Colour Dimensions Dimensions including box Weight Weight including box Input 230Vac connection Battery connection Earth connection Temperature sensor connection Starter battery connection Cooling Noise Relative humidity

Aluminium sea water resistant IP 21 Blue (RAL5012), epoxy coated 368 x 250 x 257mm 438 x 320 x 330mm

Aluminium sea water resistant IP 21 Blue (RAL5012), epoxy coated 515 x 260 x 265mm 645 x 370 x 375mm

9.8 Kg 10.5 Kg

23 Kg 24,3 Kg

Connection block, suitable for wires up to 4 mm² M8 bolts

Connection block, suitable for wires up to 10 mm² M8 bolts

M6 Studs at bottom of the cabinet M6 Stud at bottom of the cabinet

Connection block

Connection block

Connection block, suitable for wires Connection block, suitable for wires

up to 1,5mm²

up to 1,5mm²

Forced air cooling

Forced air cooling

< 45dB(A)

< 45dB(A)

95% (maximal)

95% (maximal)

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Manual Skylla-TG

250

25

200

250

7

309

365

23

Ø 6 220

25

200

Ø 8

All measurements in mm. © victron energy b.v.

Skylla-TG 24/80, 24/100 and Titan 48/50 dimensions

drawing no.: TI020000 date: 220703
revision.: 01

Manual Skylla-TG

29

258

29

200

250

7

515 459

2 3 Ø 6 220
2 5
2 0 0

All measurements in © victron energy b.v.
30

Ø 8 Skylla-TG 24/100 3-Phase dimensions
Manual Skylla-TG

drawing no.: TI030000 date: 130504 revision.: 00

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