Operating Instructions
"UniVert 2" inverter
and SBS option
AEG Power Supply Systems GmbH
Department: PPSD TED
Name: Gleitsmann/Schenuit
Revision: 01
Date: 06.08.2008
Operating Instructions
8000012364 BAL, en
"UniVert 2" inverter
Notes on these Operating Instructions
Duty to Provide Information
These operating instructions must be read carefully by all persons
working with or on the inverter system prior to installation and initial
start-up.
These operating instructions are a composite part of the inverter
system.
The operator of this unit is obliged to make these operating
instructions available to all personnel transporting or starting up units,
or performing maintenance or any other work on the unit.
Validity
These operating instructions comply with the current technical
specifications of the inverter system at the time of publication. The
contents do not constitute a subject matter of the contract, but serve
for information purposes only.
AEG reserves the right to make modifications with regard to contents
and technical data in these operating instructions without prior
notification. AEG cannot be held liable for any inaccuracies or
inapplicable information in these operating instructions, as no
obligation to continuously update the data and maintain their validity
has been entered into.
Warranty
Our goods and services are subject to the general conditions of
supply for products of the electrical industry, and our general sales
conditions. We reserve the right to alter any specifications given in
these operating instructions, especially with regard to technical data,
operation, dimensions and weights. Claims in connection with
supplied goods must be submitted within one week of receipt, along
with the packing slip. Subsequent claims cannot be considered.
AEG will rescind all obligations such as warranty agreements, service
contracts, etc. entered into by AEG or its representatives without prior
notice in the event of maintenance and repair work being carried out
with anything other than original AEG parts or spare parts purchased
by AEG.
Handling
These operating instructions are structured so that all work necessary
for start-up, maintenance and repair of the units can be performed by
qualified personnel.
Illustrations are provided to clarify and facilitate certain steps.
If danger to personnel and equipment cannot be ruled out in the event
of certain work, it is highlighted accordingly by pictograms explained
in chapter 1, Safety Instructions.
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"UniVert 2" inverter
Abbreviations
The following abbreviations are used in these instructions:
INV = Inverter
SBS = Static Bypass Switch
DOU = Display and Operation Unit
SMPS = Switch Mode Power Supply
PSM = Power Supply Monitoring
Hotline
Do you have any suggestions for improving these operating
instructions?
Do you have any questions on any of the subjects dealt with in these
operating instructions?
Our service department is available on the hotline number given
below:
No part of these operating instructions may be transmitted,
reproduced and/or copied by any electronic or mechanical means
without the express prior written permission of AEG Power Supply
Systems GmbH.
The instructions for operation and maintenance, as well as the
following safety regulations must be complied with to ensure the
safety of personnel as well as the availability of the unit. All personnel
installing/dismantling, starting up, operating or servicing the unit must
be familiar with and observe these safety regulations. Only qualified
personnel may perform the described work using tools, equipment,
test equipment and materials intended for the purpose and in perfect
working condition.
Important instructions are highlighted by "CAUTION:",
"ATTENTION:", "NOTE:" and indented text.
CAUTION:
This symbol identifies all working and operational procedures
requiring absolute compliance to avoid any danger to personnel.
ATTENTION:
This symbol identifies all working and operational procedures
requiring absolute compliance to prevent any damage, irreparable
or otherwise, to the INV or its components.
NOTE:
This symbol identifies technical requirements and additional
i
information requiring the operator's attention.
1.2 Accident Prevention Regulations
Compliance with the accident prevention regulations valid in the
respective country of use and the general safety regulations in
accordance with IEC 364 is mandatory.
The following safety regulations must be observed prior to any work
on the inverter system:
• disconnect the power supply,
• secure against reactivation,
• verify that the unit is disconnected from the power supply,
• earth and short-circuit the unit,
• cover or isolate any neighbouring live parts.
Page 6 of 42 8000012364 BAL, en
"UniVert 2" inverter
1.3 Danger during Maintenance and Repair Work
CAUTION:
The voltages applied to the INV can be fatal. Prior to start-up
and/or maintenance work always disconnect the INV from the power supply and ensure that the unit cannot be switched on.
The capacitors must be discharged. Free-standing and movable
components can protrude into the work area and cause injuries.
ATTENTION:
Considerable damage can be caused to equipment if unsuitable replacement parts are used during repair work, if work is carried
out by unauthorised personnel, or the safety regulations are not
observed.
NOTE:
Only trained and qualified personnel may work on or in the vicinity
i
of the INV (refer to chapter 1.4) while strictly observing the
safety regulations.
1.4 Qualified Personnel
The inverter system may only be transported, installed, connected,
started up, serviced and operated by qualified personnel who are
familiar with the pertinent safety and installation regulations. All work
performed must be inspected by responsible experts.
The qualified personnel must be authorised by the responsible safety
officer of the installation to perform the work required.
Qualified personnel is defined as personnel
• having completed training and gained experience in the respective
field,
• familiar with the pertinent standards, rules and regulations and
accident prevention regulations,
• having received instruction on the mode of operation and operating
conditions of the inverter system,
• capable of recognising and preventing dangers.
Regulations and definitions for qualified personnel can be found in
DIN 57105/VDE 0105, Part 1.
Page 7 of 42 8000012364 BAL, en
"UniVert 2" inverter
1.5 Safety Awareness
The qualified personnel defined in chapter 1.4 are responsible for
safety. They are also responsible for ensuring that only suitably
qualified persons are permitted access to the INV system or the
safety area.
The following points must be observed:
All working procedures are prohibited which are detrimental to the
safety of persons and the function of the INV system in any way.
The INV system may only be operated in perfect working condition.
Never remove or render inoperable any safety devices.
All necessary operational measures must be initiated prior to
deactivating any safety device for performing maintenance, repair or
any other work on the unit.
Safety awareness also entails informing colleagues of any unsuitable
behaviour and reporting any faults detected to the respective
authority or person.
1.6 Application
The INV system has been designed for installation in a power supply
cabinet and may only be used for uninterrupted power supply in the
described installation position and operating mode while observing
the maximum permissible connection values as given in these
operating instructions. The unit may only be used for this intended
purpose. It is not permitted to make any unauthorised modifications to
the INV or to use any spare parts and replacement parts not
approved by AEG SVS or to use the INV system for any other
purpose.
The person responsible for the installation must ensure that:
• the safety regulations and operating instructions are readily
available and are complied with,
• the operating conditions and technical data are observed,
• safety devices are used,
• the prescribed maintenance work is performed,
• the maintenance personnel is informed without delay or that the
INV system is shut down immediately in the event of abnormal
voltages or noise, high temperatures, vibrations or any similar
effects, in order to detect the cause.
These operating instructions contain all information required by
qualified personnel for operation of the INV system. Additional
information and explanations for unqualified persons and for the use
of the INV system in non-industrial applications is not included in
these operating instructions.
The warranty obligations of the manufacturer are only applicable if
these operating instructions are observed and complied with.
Page 8 of 42 8000012364 BAL, en
1.7 Liability
1.8 Directives
"UniVert 2" inverter
No liability is accepted if the inverter system is used for applications
not intended by the manufacturer. Any measures necessary for the
prevention of injury, or damage to equipment is the responsibility of
the operator or user. In the event of any claims in connection with the
unit, please contact us quoting:
• type designation,
• works number,
• reason for claim,
• period of use,
• ambient conditions,
• operating mode.
The units comply with current DIN and VDE regulations. VBG4 is met
on the basis of compliance with VDE 0106 Part 100.
The requirements of VDE 0100 Part 410, "Functional extra-low
voltage with safe isolation", are complied with when applicable.
The CE sign on the unit confirms compliance with the EC outline
directives for 73/23 EEC – Low voltage and for 89/336 EEC –
Electromagnetic compatibility if the installation and start-up
instructions described in the operating instructions are observed!
Page 9 of 42 8000012364 BAL, en
"UniVert 2" inverter
A
A
A
A
2 General Information
2.1 System Description
Depending on the system design, the following versions of safe
AC power supply are possible (Figure 1):
• Individual INV operation
• Parallel operation of several INVs
• Individual or parallel operation with SBS
DC
INV
=
~
C load
Bus termination
Individual operation
INV
=
~
Parallel operation
INV
INV
=
C load
INV
DC
DC
INV
~
INV
CAN bus
~
Bus termination
SBS
C mains
CAN bus
=
Bus termination
Figure 1 Block diagrams of various systems
Page 10 of 42 8000012364 BAL, en
=
~
Parallel operation with SBS
=
=
~
~
Man. bypass
C load
"UniVert 2" inverter
Individual INV operation:
Here an INV is supplied with DC and itself supplies the AC load. In
the event of INV fault or switch-off, the load is no longer supplied.
Parallel INV operation:
In order to increase redundancy or performance, up to 8 INVs of the
same type and the same output can be connected in parallel. Note
that if one or several of the INVs fail, the remaining INVs take over
the load. Overload of the remaining INVs can be prevented by
choosing the right number of redundant INVs. If the number of INVs
that fail or are switched off exceeds the number of available
redundant INVs, the remaining INVs switch off together.
When the INVs are switched back on by connecting the DC, they do
not switch on their output contactors at the same time until a sufficient
number of INVs (in accordance with the redundancy setting) are
available to take over the load.
INVs for parallel operation need a choke between INV output and
busbar.
Individual or parallel operation with SBS:
If one or more INVs are combined with an SPS, switchover of the
loads from the mains to the INV and vice versa is possible without
any interruption. With parallel operation systems, the load is
distributed to the remaining INVs if one or several INVs fail. The
system may switch over to the mains when a voltage drop occurs on
the load busbar as a result of the failure of one INV, or if the number
of INVs still operating is insufficient (redundancy setting). In order to
switch the load back from the mains to the INVs, n-R INVs must be in
operation (where R = redundant INVs).
2.2 Function of the System
Individual INV operation:
The INV as an individual unit supplies the loads. If it is switched off or
disturbed, either by internal faults of the INV or by failure of the
DC supply or by a DC voltage deviation, the AC loads are no longer
supplied. The INV is not synchronised with the mains or other
AC voltage sources. The INV can be connected to the DC voltage
using a switching device on the input (miniature circuit-breaker,
contactor). An internal softstart device limits the current to values
below the rated current. If the INV is switched to the DC, the control
unit starts operating. The INV supplies the output voltage if the unit is
additionally switched on using the ON/OFF switch. If the supplying
mains fails, the battery of the power supply system is discharged
(also) by the INV. When the DC undervoltage monitoring value is
reached, the INV is switched off. If the battery is charged after the
mains voltage has returned, the INV is automatically started when a
limit value of the DC undervoltage monitoring is exceeded.
Page 11 of 42 8000012364 BAL, en
"UniVert 2" inverter
Parallel INV operation:
Prerequisite for parallel operation is that the INVs on the DC and AC
side are connected in parallel, interconnected via CAN bus (16-pin,
X7) and correctly addressed. The general behaviour of an individual
INV is as described in the previous paragraph.
The loads are only supplied with voltage when n-R INVs are switched
on. The K7 output contactors of the INVs switch on simultaneously.
The load is distributed equally to all the INVs in operation. If an INV is
switched off or becomes faulty, the remaining INVs supply the load.
The INVs are not synchronised with the mains.
When the DC undervoltage monitoring value is reached, the INVs are
switched off. If the battery is charged after the mains voltage has
returned, the INVs are automatically started when a limit value of the
DC undervoltage monitoring is exceeded. The K7 output contactors of
the INVs are switched on when n-R INVs are in operation.
In order to be able to remove one INV from the interconnected
system for maintenance or repair work, we recommend providing a
DC and an AC fuse for each INV.
Individual or parallel operation with SBS:
Prerequisite for operation with SBS is that the INV and SBS are
connected in parallel on the AC side, interconnected via
CAN bus (X7) and correctly addressed. The general behaviour of an
individual INV is as described in the two previous paragraphs.
Under normal conditions, the INVs are operating synchronously with
the mains and supply the AC loads. In the event of a voltage drop on
the load busbar caused by the short circuit of an AC load or the
failure, switch-off or overload of the INVs, the thyristor contactor of
the SBS is fired and the K7 output contactors of the INVs are
switched off. The loads are supplied by the mains. When the required
number of INVs is available again, the loads are switched back from
the mains to the INVs without interruption. If the SBS is blocked, e.g.
because of mains voltage deviations, it is not possible to switch from
INV to mains or vice versa.
In order to be able to disconnect the SBS from the mains and the
AC busbar for maintenance or repair work, we recommend providing
an AC fuse for both sides and supply the loads via the manual
bypass.
Page 12 of 42 8000012364 BAL, en
"UniVert 2" inverter
2.3 Description of the INV
Its electronic high-performance components make the INV suitable
for universal applications. It has a very high degree of operational
reliability, optimum efficiency and excellent communication capability
with other systems thanks to integrated interfaces.
The control electronics of the INV have been designed on the basis of
state-of-the-art microcontroller technology. By using parameters in
the software, the main unit characteristics are determined.
SoftstartDC filterINV setTransform.AC filter
DC
Control unit
DOU
U = 231V
I = 10.3A
INV
Figure 2 Block diagram of the inverter
The main assemblies of the INV are (Figure 2):
• Softstart
• DC filter
• INV set
• Transformer
• AC filter
• INV output contactor
• Control unit
• DOU
Contactor
Load
Page 13 of 42 8000012364 BAL, en
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