Victron energy multiplus compact User manual

Manual
EN
Handleiding
NL
Manue
l
FR
Anleitung
DE
Manual
ES
Appendix
MultiPlus Compact
12 | 800 | 35-16 230V 24 |800 | 16-16 230V
12 | 1200 | 50-16 230V 24 | 1200 | 25-16 230V
12 | 1600 | 70-16 230V 24 | 1600 | 40-16 230V

Copyrights 2008 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.
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. MAKES NO WARRANTY, EITHER EXPRESSED 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 HERE IN.
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

1
EN NL FR DE ES Appendix
1. SAFETY INSTRUCTIONS
General
Please familiarize yourself with the safety features and instructions by first reading the
documentation supplied with this product before using the equipment. This product has
been designed and tested in accordance with international standards. The equipment
must be used exclusively for the purpose for which it was designed.
WARNING: ELECTRIC SHOCK HAZARD.
The product is used in conjunction with a permanent energy source (battery). Input and/or
output terminals may still be dangerously energized, even when the equipment is
switched off. Always switch off the AC supply and the battery before carrying out
maintenance or servicing the product.
The product has no internal user-serviceable components. Do not remove the front plate
or operate the product if any panels have been removed. All servicing must be
undertaken by qualified personnel.
Never use the product where there is a risk of gas or dust explosions. Consult the battery
manufacturer's information to ascertain that the product is intended for use in conjunction
with the battery. Always comply with the battery manufacturer's safety instructions.
WARNING: Do not lift heavy loads without assistance.
Installation
Read the installation instructions in the installation manual before installing the equipment.
This is a Safety Class I product (supplied with a protective grounding terminal).
Uninterruptible protective grounding must be provided at the AC input and/or output
terminals. Alternatively the grounding point located externally on the product may be
used. Whenever it is likely that the grounding protection has been damaged, the product must
be turned off and secured against unintended operation; please contact qualified service staff.
Ensure that the DC and AC input cables are fused and fitted with circuit breakers. Never
replace a safety component with a different type. Consult the manual to determine the correct
component.
Before applying power, ensure that the available power source matches the configuration
settings of the product as described in the manual.

2
Ensure that the equipment is used under the correct ambient conditions. Never operate the
product in a wet or dusty environment. Ensure there is adequate free space for ventilation
around the product and check that the ventilation vents are not blocked.
Ensure that the required system voltage does not exceed the product's capacity.
Transport and Storage
Ensure that the mains power and battery leads have been disconnected before storing or
transporting the product.
No liability can be accepted for any transport damage if the equipment is shipped in non-
original packaging.
Store the product in a dry environment; the storage temperature must be between -20°C and
60°C.
Consult the battery manufacturer's manual in respect of transport, storage, charging,
recharging and disposal of the battery.

3
EN NL FR DE ES Appendix
2. DESCRIPTION
2.1 General
MultiPlus Compact-functional
The MultiPlus Compact gets its name from the multiple functions it can perform. It is a
powerful true sine wave inverter, a sophisticated battery charger that features adaptive
charge technology and a high-speed AC transfer switch in a single compact enclosure.
Beside these primary functions, however, the MultiPlus Compact has several advanced
features that provide a range of new applications as outlined below.
Uninterrupted AC power
In the event of a grid failure, or shore or generator power being disconnected, the inverter
within the MultiPlus Compact is automatically activated and takes over supply to the
connected loads. This happens so fast (less than 20 milliseconds) that computers and
other electronic equipment will continue to operate without disruption.
Parallel and 3-phase operation capability
Up to 6 inverters can operate in parallel to achieve higher power output.
Operation in 3-phase configuration is also possible.
PowerControl – Dealing with limited generator or shore side power
With a Multi Control Panel a maximum generator or shore current can be set. The
MultiPlus Compact will then take account of other AC loads and use whatever is extra for
charging, thus preventing the generator or shore supply from being overloaded.
PowerAssist – Boosting the capacity of shore or generator power
This feature takes the principle of PowerControl to a further dimension allowing the MultiPlus
Compact to supplement the capacity of the alternative source. Where peak power is so often
required only for a limited period, it is possible to reduce the size of generator needed or
conversely enable more to be achieved from the typically limited shore connection. When the
load reduces, the spare power is used to recharge the battery.
Programmable relay
The MultiPlus is equipped with a programmable relay that by default is set as an alarm relay.
The relay can be programmed for all kinds of other applications however, for example as a
starter relay for a generator.
2.2 Battery charger
Adaptive 4-stage charging characteristics: bulk – absorption – float – storage
The microprocessor-driven adaptive battery management system can be adjusted for various
types of batteries. The adaptive function automatically adapts the charging process to battery
use.
The right amount of charge: variable absorption time
In the event of slight battery discharge, absorption is kept short to prevent overcharging and
excessive gas formation. After deep discharging, the absorption time is automatically
extended in order to fully charge the battery.

4
Preventing damage due to excessive gassing: the BatterySafe mode
If, in order to quickly charge a battery, a high charge current in combination with a high
absorption voltage has been chosen, damage due to excessive gassing will be prevented by
automatically limiting the rate of voltage increase once the gassing voltage has been reached.
Less maintenance and aging when the battery is not in use: the Storage mode
The Storage mode kicks in whenever the battery has not been subjected to discharge during
24 hours. In the Storage mode float voltage is reduced to 2,2V/cell (13,2V for 12V battery) to
minimise gassing and corrosion of the positive plates. Once a week the voltage is raised
back to the absorption level to ‘equalize’ the battery. This feature prevents stratification of the
electrolyte and sulphation, a major cause of early battery failure.
Two DC outputs for charging two batteries
The main DC terminal can supply the full output current. The second output, intended for
charging a starter battery, is limited to 4A and has a slightly lower output voltage.
Increasing service life of the battery: temperature compensation
The temperature sensor (supplied with the product) serves to reduce charging voltage when
battery temperature rises. This is particularly important for maintenance-free batteries, which
could otherwise dry out by overcharging.
Battery voltage sense: the correct charge voltage
Voltage loss due to cable resistance can be compensated by using the voltage sense facility
to measure voltage directly on the DC bus or on the battery terminals.
More on batteries and charging
Our book ‘Energy Unlimited’ offers further information on batteries and battery charging, and
is available free of charge on our website (see www.victronenergy.com -> Support &
Downloads’ -> General Technical Information). For more information on adaptive charging,
please also refer to the General Technical Information our website.
2.3 Self consumption – solar energy storage systems
When the Multi/Quattro is used in a configuration in which it will feed back energy to the grid it
is required to enable grid code compliance by selecting the grid code country setting with the
VEConfigure tool.
This way the Multi/Quattro can comply to the local rules.
Once set, a password will be required to disable grid code compliance or change grid code
related parameters.
If the local grid code is not supported by the Multi/Quattro an external certified interface device
should be used to connect the Multi/Quattro to the grid.
Special note for Australian customers: IEC62109.1 certification and CEC approval for off-grid
use does NOT imply approval for grid-interactive installations. Additional certification to IEC
62109.2 and AS 4777.2.2015 are required before grid-interactive systems can be
implemented. Please check Clean Energy Council website for current approvals.

5
EN NL FR DE ES Appendix
3. OPERATION
3.1 On/Off/Charger Only Switch
When switched to "on", the product is fully functional. The inverter will come into
operation and the LED "inverter on" will light up.
An AC voltage connected to the "AC in" terminal will be switched through to the "AC out"
terminal, if within specifications. The inverter will switch off, the "mains on" LED will light
up and the charger commences charging. The "bulk", "absorption" or "float" LEDs will light
up, depending on the charger mode.
If the voltage at the "AC-in" terminal is not within specifacations, the inverter will switch
on.
When the switch is switched to "charger only", only the battery charger of the MultiPlus
will operate (if mains voltage is present). In this mode input voltage also is switched
through to the "AC out" terminal.
NOTE: When only the charger function is required, ensure that the switch is switched to
"charger only". This prevents the inverter from being switched on if the mains voltage is
lost, thus preventing your batteries from running flat.
3.2 Remote control
Remote control is possible with a 3-way switch or with a Multi Control panel.
The Multi Control panel has a simple rotary knob with which the maximum current of the AC
input can be set: see PowerControl and PowerAssist in Section 2.
For the appropriate DIP switch settings, see sect. 5.5.1.
3.3 Equalisation and forced absorption
3.3.1 Equalisation
Traction batteries may require regular equalisation charging. In the equalisation mode, the
MultiPlus will charge with increased voltage for one hour (1V above the absorption voltage for
a 12V battery, 2V for a 24V battery). The charging current is then limited to 1/4 of the set
value. The “bulk” and “absorption” LEDs flash intermittently.
Equalisation mode supplies a higher charging voltage than most DC consuming
devices can cope with. These devices must be disconnected before additional
charging takes place.
3.3.2 Forced absorption
Under certain circumstances, it can be desirable to charge the battery for a fixed time at
absorption voltage level. In Forced Absorption mode, the MultiPlus will charge at the normal
absorption voltage level during the set maximum absorption time. The “absorption” LED will
be ‘on’.

6
3.3.3 Activating equalisation or forced absorption
The MultiPlus can be put into both these states from the remote panel as well as with the front
panel switch, provided that all switches (front, remote and panel) are set to “on” and no
switches are set to “charger only”.
In order to put the MultiPlus in this state, the procedure below should be followed.
If the switch is not in the required position after following this procedure, it can be switched
over quickly once. This will not change the charging state.
NOTE: Switching from “on” to “charger only” and vice versa, as described below, must be done quickly. The
switch must be toggled such that the intermediate position is 'skipped', as it were. If the switch remains in
the “off” position even for a short time, the device may be turned off. In that case, the procedure must be
restarted at step 1. A certain degree of familiarisation is required when using the front switch on the
Compact in particular. When using the remote panel, this is less critical.
Procedure:
1. Check whether all switches (i.e. front switch, remote switch or remote panel switch if present) are in the
“on” position.
2. Activating equalisation or forced absorption is only meaningful if the normal charging cycle is completed
(charger is in 'Float').
3. To activate:
a. Switch rapidly from “on” to “charger only” and leave the switch in this position for ½ to 2 seconds.
b. Switch rapidly back from “charger only” to “on” and leave the switch in this position for ½ to 2 seconds.
c. Switch once more rapidly from “on” to “charger only” and leave the switch in this position.
4. On the MultiPlus the three LEDs “Inverter”, “Charger” and “Alarm” will now flash 5 times.
If a MultiControl panel is connected, on the panel the LEDs “bulk”, “absorption” and “float” will also flash 5
times.
5. Subsequently, on the MultiPlus the LEDs “Bulk”, “Absorption” and “Float” will each light during 2
seconds.
If a MultiControl panel is connected, on the panel the LEDs “bulk”, “absorption” and “float” will also each
light during 2 seconds.
6.
a. If the switch on the MultiPlus is set to “on” while the “Bulk” LED lights, the charger will switch to
equalisation.
Similarly, if the switch on the MultiControl panel is set to “on” while the “Bulk” LED lights, the charger will
switch to equalisation.
b. If the switch on the MultiPlus is set to “on” while the “Absorption” LED lights, the charger will switch to
forced absorption.
Similarly, if the switch on the MultiControl panel is set to “on” while the “Absorption” LED lights, the charger
will switch to forced absorption.
c. If the switch on the MultiPlus is set to “on” after the three LED sequence has finished, the charger will
switch to “Float”.
Similarly, if the switch on the MultiControl panel is set to “on” after the three LED sequence has finished,
the charger will switch to “float”.
d. If the switch is has not been moved, the MultiPlus will remain in ‘charger only’ mode and switch to
“Float”.

7
EN NL FR DE ES Appendix
3.4 LED Indications
Inverter
The inverter is switched on and supplies
power to the load. Battery operation.
inverter
on
charger
off
alarm
charger only
The inverter is switched on and supplies
power to the load.
Pre alarm: overload, or
battery voltage low, or
inverter temperature high
inverter
on
charger
off
alarm
charger only
The inverter is switched off.
Alarm: overload, or
battery voltage low, or
inverter temperature hig, or
DC ripple voltage on battery
terminal was too high.
inverter
on
charger
off
alarm
charger only
Charger
The AC input voltage is switched through
and the charger operates in bulk or
absorption mode.
inverter
on
charger
off
alarm
charger only
The AC input voltage is switched through
and the charger is switched off.
The battery charger can not reach battery
end voltage (bulk protection mode).
inverter
on
charger
off
alarm
charger only
LED off
LED flashes
LED illuminated

8
The AC input voltage is switched through
and the charger operates in bulk or
absorption mode.
inverter
on
charger
off
alarm
charger only
The AC input voltage is switched through
and the charger operates in float mode.
inverter
on
charger
off
alarm
charger only
Remote Control panel (optional)
Power Control and PowerAssist indication
inverter on
mains on
overload
bulk
low battery
absorption
temperature
float
on
charger only
off
Note: When the LED’s “overload” and “low battery” are on simultaneously, the Multi(Plus) or
Inverter Compact has switched off due to excessive DC ripple voltage.

9
EN NL FR DE ES Appendix
4. INSTALLATION
4.1 Location
The product must be installed in a dry and well-ventilated area, as close as possible to
the batteries. There should be a clear space of at least 10cm around the appliance for
cooling.
The product is suitable for wall mounting. For mounting see appendix A.
The appliance can be mounted horizontally as well as vertically; vertical mounting is
preferable. The vertical position offers optimum cooling.
The interior of the product must remain accessible after installation.
Try and keep the distance between the product and the battery to a minimum in order to
minimize cable voltage losses.
For safety purposes, this product should be installed in a heat-resistant
environment if it is used with equipment where a substantial amount of power is
to be converted. You should prevent the presence of e.g. chemicals, synthetic
components, curtains or other textiles, etc., in the immediate vicinity.
This product should be installed by a qualified electrician.
Excessively high ambient temperature will result in the following:
Reduced service life.
Reduced charging current.
Reduced peak capacity, or shutdown of the inverter.
Never mount the appliance directly above the batteries.

10
4.2 Connection of Battery cables
In order to fully utilize the full capacity of the product, batteries with sufficient capacity and
battery cables with sufficient cross section should be used. See table.
24/800
24/1200
24/1600
12/800
12/1200
12/1600
Preassembled
cable length 1.5 m
(mm
2)
10 16 25 16 25 35
Recommended
cross section (mm
2
)
1,5 15 m
16
25
35
35
50
70
5 10 m
35
50
70
70
100
140
24/800
24/1200
12/800
12/1200
12/1600
24/1600
Recommended
battery capacity (Ah)
40 – 200 40 – 400 100 – 400 150 – 700 200 – 700
Remark: Internal resistance is the important factor when working with low capacity batteries.
Please consult your supplier or the relevant sections of our book “electricity on board”,
downloadable from our website.
Procedure
Proceed as follows to connect the battery cables:
Use an insulated box spanner in order to avoid shorting the battery.
Avoid shorting the battery cables.
Connect the battery cables: the + (red) and the - (black), to the battery see appendix A.
Reverse polarity connection (+ to – and – to +) will cause damage to the product. (Safety fuse
inside the MultiPlus Compact can be damaged)
Secure the nuts tightly in order to reduce the contact resistance as much as possible.

11
EN NL FR DE ES Appendix
4.3 Connection of the AC cabling
The mains -input & output terminal connector can be found on the bottom of the MultiPlus
Compact, see appendix A. The shore or mains cable must be connected to the connector
with a three-wire cable. Use a three-wire cable with a flexible core and a cross section of
2.5mm².
Procedure
Proceed as follows to connect the AC cables:
The AC output cable can be connected directly to the male-connector. (the connector pulls
out!)
The terminal points are indicated clearly. From left to right: “N” (neutral), earth, and “L1”
(phase).
The AC input cable can be connected directly to the female-connector. (the connector pulls
out!)
The terminal points are indicated clearly. From left to right: “L1” (phase), earth, and “N”
(neutral).
Push the "input" connector into the AC-in connector (near to rear-side).
Push the "output" connector into the AC-out connector (near to front-side).
This is a Safety Class I product (supplied with a protective grounding terminal).
Uninterruptible protective grounding must be provided at the AC input
and/or output terminals and/or chassis grounding point located externally
on the product.
The MultiPlus is provided with a ground relay (relay H, see appendix B) that
automatically connects the Neutral output to the chassis if no external AC
supply is available. If an external AC supply is provided, the ground relay H
will open before the input safety relay closes. This ensures the correct
operation of an earth leakage circuit breaker that is connected to the output.
- In a fixed installation, an uninterruptable grounding can be secured by means
of the grounding wire of the AC input. Otherwise the casing must be grounded.
- In a mobile installation (for example, with a shore current plug), interrupting
the shore connection will simultaneously disconnect the grounding connection.
In that case, the casing must be connected to the chassis (of the vehicle) or to
the hull or grounding plate (of the boat).
- In case of a boat, direct connection to the shore ground is not recommended
because of potential galvanic corrosion. The solution to this is using an isolation
transformer.

12
4.4 Optional Connections
A number of optional connections are possible:
Undo the four screws at the front of the enclosure and remove the front panel.
4.4.1 Second Battery
The MultiPlus Compact has a connection (+) for charging a starter battery. For connection see
appendix 1
4.4.2 Temperature Sensor
The temperature sensor supplied with the product may be used for temperature-compensated
charging. The sensor is insulated and must be mounted on the batteries minus pole. Default
output voltages for Float and Absorption are at 25°C. In adjust mode temperature
compensation is disabled.
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
14.5
15.0
0 5 10 15 20 25 30 35 40 45 50 55 60
Battery temperature
Volts
20
21
22
23
24
25
26
27
28
29
30
Volts
4.4.3 Remote Control
The product can be remotely controlled in two ways:
- With an external 3-way switch
- With a Multi Control Panel
Please see section 5.5.1. for appropriate DIP switch settings.
4.4.4. Programmable relay
The MultiPlus is equipped with a multi-functional relay that by default is programmed as an
alarm relay. The relay can be programmed for all kinds of other applications however, for
example to start a generator (VEConfigure software needed).
Near the connection terminals an LED illuminates when the relay is activated (refer to S, see
appendix A)

13
EN NL FR DE ES Appendix
4.4.5 Parallel Connection
The MultiPlus can be connected in parallel with several identical devices. To this end, a
connection is established between the devices by means of standard RJ45 UTP cables.
The system (one or more MultiPlus units plus optional control panel) will require
subsequent configuration (see Section 5).
In the event of connecting MultiPlus units in parallel, the following requirements must be
met:
- A maximum of six units connected in parallel.
- Only identical devices may be connected in parallel.
- The DC connection cables to the devices must be of equal length and cross-section.
- If a positive and a negative DC distribution point is used, the cross-section of the connection between
the batteries and the DC distribution point must at least equal the sum of the required cross-sections of
the connections between the distribution point and the MultiPlus units.
- Place the MultiPlus units close to each other, but allow at least 10 cm for ventilation purposes under,
above and beside the units.
- UTP cables must be connected directly from one unit to the other (and to the remote panel).
Connection/splitter boxes are not permitted.
- A battery-temperature sensor need only be connected to one unit in the system. If the temperature of
several batteries is to be measured, you can also connect the sensors of other MultiPlus units in the
system (with a maximum of one sensor per MultiPlus). Temperature compensation during battery
charging responds to the sensor indicating the highest temperature.
- Voltage sensing must be connected to the master (see Section 5.5.1.4).
- If more than three units are connected in parallel in one system, a dongle is required (see Section 5).
- Only one remote control means (panel or switch) can be connected to the system.
4.4.6 Three-phase operation (see appendix D)
The MultiPlus can also be used in 3-phase configuration. To this end, a connection
between the devices is made by means of standard RJ45 UTP cables (the same as for
parallel operation). The system (MultiPlus units plus an optional control panel) will require
subsequently configuration (see Section 5).
Pre-requisites: see Section 4.4.5.

14
5. CONFIGURATION
Settings may only be changed by a qualified engineer
Carefully read the instructions before changes are made.
Batteries should be placed in a dry and well-ventilated area during charging.
5.1 Standard settings: ready for use
On delivery, the MultiPlus is set to standard factory values. In general, these settings are
suitable for single-unit operation.
Warning:Possibly, the standard battery charging voltage is not suitable for your
batteries! Refer to the manufacturer's documentation, or to your battery supplier!
Standard MultiPlus factory settings
Inverter frequency 50 Hz
Input frequency range 45 - 65 Hz
Input voltage range 180 - 265 VAC
Inverter voltage 230 VAC
Stand-alone / parallel / 3-phase stand-alone
Search mode off
Ground relay on
Charger on/ off on
Battery charge curve four-stage adaptive with BatterySafe mode
Charge current 75% of the maximum charge current
Victron Gel Deep Discharge (also suitable
for Victron AGM Deep Discharge)
Automatic equalisation charging off
Absorption voltage 14.4 / 28.8v
Absorption time up to 8 hours (depending on bulk time)
Float voltage 13.8 / 27.6V
Storage voltage 13.2 / 26.4V (not adjustable)
Repeated absorption time 1 hour
Absorption repeat interval 7 days
Bulk protection on
AC input current limit 12A (= adjustable current limit for PowerControl and
PowerAssist functions)
UPS feature on
Dynamic current limiter off
WeakAC off
BoostFactor 2
PowerAssist on
Programmable relay alarm function

15
EN NL FR DE ES Appendix
5.2 Explanation of settings
Settings that are not self-explanatory are described briefly below. For further information,
please refer to the help files in the software configuration programs (see Section 5.3).
Inverter frequency
Output frequency if no AC is present at the input.
Adjustability: 50Hz; 60Hz
Input frequency range
Input frequency range accepted by the MultiPlus. The MultiPlus synchronises within this
range with the AC input frequency. The output frequency is then equal to the input
frequency.
Adjustability: 45 – 65 Hz; 45 – 55 Hz; 55 – 65 Hz
Input voltage range
Voltage range accepted by the MultiPlus. The MultiPlus synchronises within this range
with the AC input voltage. The output voltage is then equal to the input voltage.
Adjustability:
Lower limit: 180 - 230V
Upper limit: 230 - 270V
Inverter voltage
Output voltage of the MultiPlus in battery operation.
Adjustability: 210 – 245V
Stand-alone / parallel operation / 2-3 phase setting
Using several devices, it is possible to:
increase total inverter power (several devices in parallel)
create a split-phase system
create a 3-phase system.
The standard product settings are for standalone operation. For parallel, three phase or split
phase operation see section 4.4.5 and 4.4.6.
Search Mode (Applicable in stand-alone configuration only)
If search mode is ‘on’, the power consumption in no-load operation is decreased by approx.
70%. In this mode the Compact, when operating in inverter mode, is switched off in case of no
load or very low load, and switches on every two seconds for a short period. If the output
current exceeds a set level, the inverter will continue to operate. If not, the inverter will shut
down again.
The Search Mode can be set with a DIP switch.
The Search Mode “shut down” and “remain on” load levels can be set with VEConfigure.
The standard settings are:
Shut down: 40 Watt (linear load)
Turn on: 100 Watt (linear load)

16
AES (Automatic Economy Switch)
Instead of the search mode, the AES mode can also be chosen (with help of VEConfigure
only).
If this setting is turned ‘on’, the power consumption in no-load operation and with low loads is
decreased by approx. 20%, by slightly 'narrowing' the sinusoidal voltage.
Not adjustable with DIP switches.
Applicable in stand-alone configuration only.
Ground relay (see appendix B)
With this relay (H), the neutral conductor of the AC output is grounded to the chassis when the
back feed safety relay is open. This ensures the correct operation of earth leakage circuit
breakers in the output.
If a non-grounded output is required during inverter operation, this function must be turned off.
(See also Section 4.5)
Not adjustable with DIP switches.
Battery charge curve
The standard setting is ‘Four-stage adaptive with BatterySafe mode’. See Section 2 for a
description.
This is the recommended charge curve. See the help files in the software configuration
programs for other features.
Battery type
The standard setting is the most suitable for Victron Gel Deep Discharge, Gel Exide A200,
and tubular plate stationary batteries (OPzS). This setting can also be used for many other
batteries: e.g. Victron AGM Deep Discharge and other AGM batteries, and many types of flat-
plate open batteries. Four charging voltages can be set with DIP switches.
Automatic equalisation charging
This setting is intended for tubular plate traction batteries. During absorption the voltage limit
increases to 2,83V/cell (34V for a 24V battery) once the charge current has tapered down to
less than 10% of the set maximum current.
Not adjustable with DIP switches.
See ’tubular plate traction battery charge curve’ in VEConfigure.
Absorption time
The absortion time depends on the bulk time (adaptive charge curve), so that the battery is
optimally charged. If the ‘fixed’ charging characteristic is selected, the absorption time is fixed.
For most batteries, a maximum absorption time of eight hours is suitable. If an extra high
absorption voltage is selected for rapid charging (only possible for open, flooded batteries!),
four hours is preferable. With DIP switches, a time of eight or four hours can be set. For the
adaptive charge curve, this determines the maximum absorption time.
Storage voltage, Repeated Absorption Time, Absorption Repeat Interval
See Section 2. Not adjustable with DIP switches.