Thank you for deciding to purchase the PROTECT A. UPS
from AEG Power Solutions.
The following safety instructions are an important part of
the operating instructions are will protect you against
problems from operating errors and possible dangers.
Please read these instructions carefully prior to
commissioning!
3
1Notes on these Operating
Instructions
Duty to provide information
These operating instructions will help you to install and
operate the U
PROTECT A. 500 or PROTECT A. 700 - referred to as
PROTECT A. in this document - safely and properly, and for
its intended purpose. These operating instructions contain
important information for avoiding dangers.
Please read these instructions carefully prior to
commissioning!
These operating instructions are a composite part of
PROTECT A.
The owner of this unit is obliged to communicate the full
content of these operating instructions to all personnel
transporting or starting the PROTECT A. or performing
maintenance or any other work on the unit, without the
information having to be requested.
Validity
These operating instructions comply with the current technical
specifications of PROTECT A. at the time of publication. The
contents do not constitute subject matter of the contract, but
serve for information purposes only.
ninterruptible Power Supply (UPS),
Warranty and liability
We reserve the right to alter any specifications given in these
operating instructions, especially with regard to technical data
and operation, prior to start-up or as a result of service work.
Claims in connection with supplied goods must be submitted
within one week of receipt, along with the packing slip.
Subsequent claims cannot be considered.
The warranty does not apply for damage caused by noncompliance with these instructions (such damage also
includes damage to the warranty seal). AEG will accept no
liability for consequential damage. AEG will rescind all
4
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 from AEG.
Handling
PROTECT A. is designed and constructed so that all
necessary steps for start-up and operation can be performed
without any internal manipulation of the unit. Maintenance and
repair work may only be performed by trained and qualified
personnel.
Illustrations are provided to clarify and facilitate certain steps.
If danger to personnel and the unit cannot be ruled out in the
case of certain work, it is highlighted accordingly by
pictographs explained in the safety regulations of chapter 3.
Hotline
If you still have questions after having read these operating
instructions, please contact your dealer or our hotline:
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.
PROTECTA. is an uninterruptible power supply
(UPS) for essential loads such as PCs, work-
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The PROTECT A. series is a compact, interactively operating
UPS available with nominal power output ratings 500, 700,
1000 and 1400 VA.
This document describes both types, PROTECT A. 500 and
PROTECT A.700.
2.1Brief Overview
LED display and a pushbutton switch are located on the front
of the UPS for straightforward monitoring and operation. The
display unit with traffic light function clearly signals the
particular operating condition: normal operation, battery
discharge, fault.
The connections for the mains and the loads are located on
the rear of the PROTECT A., as are the communication
interfaces and connections for telephone lines. Important UPS
data is monitored permanently and transferred to the
computer via USB or the RS232 interface and using the
CompuWatch software.
stations, relatively small-scale telecommunication
equipment and similar devices.
Features of the PROTECT A.:
♦ VI (line – interactive) protection technology
♦ Automatic voltage regulation against mains voltage
deviations (AVR)
♦ Microprocessor control for high reliability
♦ Modern battery management with integrated protection
against exhaust. discharge and overloading
♦ User-friendly display
with optimum legibility
♦ Intelligent monitoring system
with USB and RS232 interfaces
7
♦ Overvoltage protection (RJ11)
for fax, modem and phone
♦ CompuWatch software for shutdown, status messages
and measurement values for all major operating
systems (incl. Windows, Mac, Linux)
♦ Compact design / without fan
2.2Principle of Operation
The UPS is connected to a shockproof socket between the
public utility’s mains and the loads to be protected.
Under normal operating conditions, i.e. if PROTECT A. is
supplied with mains voltage, the battery charger will ensure
that the battery is always completely charged.
During this operating status, the loads connected to
PROTECT A. are supplied with voltage via mains filters which
provide effective protection against mains voltage peaks and
high-frequency faults.
In case of sustained mains undervoltage or overvoltage within
defined ranges, the automatic voltage regulator (AVR) further
stabilises the load voltage. As a result, voltage fluctuations in
the public utility’s mains are reduced to a level which is
acceptable for the loads. This is performed without recourse
to the internal energy storage, something which in turn has a
positive effect on battery availability.
Mains
Line
filter
Rectifier
UPS Block diagram PROTECTA.
A. V. R.
Load
switch
Static bypass
Inverter
Battery
8
The static bypass switch is activated in the event of a mains
failure. The inverter then takes over the voltage supply of the
connected loads, in order to prevent the risk of data loss or
damage to the loads. PROTECT A. supplies voltage until the
battery is discharged or your IT system has been shut down
and switched off properly.
The standby time mainly depends on the connected loads. If
the mains power supply is back to normal values, the UPS will
switch back the loads to mains supply. The battery charger
will then recharge the battery.
For safety reasons (as required by German standards, VDE),
the mains input in the unit will be disconnected by a two-pole
switch in the event of a mains failure. Energy backfeed to the
mains and voltage supply to the pins of the mains connector
are thus reliably avoided.
Furthermore, additional measures ensure effective protection
for the data/network interface.
9
3Safety
Useful and important information for operating
3.1General Safety Instructions
Read these operating instructions carefully prior to
commissioning of the PROTECT A. UPS and observe the
safety instructions!
Only use the unit if it is in a technically perfect condition and
always in accordance with its intended purpose, while being
aware of safety and danger aspects, and in accordance with
the operating instructions! Immediately eliminate any faults
that could be detrimental to safety.
The following pictograms are used in these operating
instructions to identify dangers and important information:
Danger!
Identifies risk of fatal injury to the operator.
Attention!
Identifies risk of injury and risk of damage to the
device and parts of the device.
Information!
i
the UPS.
3.2Safety Instructions for PROTECT A.
This chapter contains important instructions for the
PROTECT A. UPS. These must be followed during assembly,
operation and maintenance of the uninterruptible power
supply and the batteries.
The UPS is live, and the voltage can be
dangerous. The unit may only be opened by
trained and qualified personnel. Repairs may
only be carried out by qualified customer service
staff!
10
The output may be live, even if the UPS is not
connected to the mains supply, as the UPS has
its own internal power supply (battery)!
For health and safety reasons, the unit must be
earthed correctly!
PROTECT A. may only be operated with or connected to a
220 / 230 / 240 VAC mains with protective grounding using a
mains connection cable with PE conductor (included in the
delivery) that has been tested in accordance with German
standards (VDE).
Risk of burning!
The battery has powerful short-circuit currents.
Incorrect connection or isolation faults can lead
to melting of the plug connections, sparking
potential and severe burns!
The unit has a warning signal that sounds when
the battery voltage of PROTECT A. is exhausted
or when the UPS is not working in its normal
mode.
Observe the following safety instructions to
ensure permanent operational safety of and safe
work with the UPS:
♦ Do not dismantle the UPS!
♦ (The UPS does not contain any parts that require
regular maintenance. Bear in mind that the warranty
will be invalidated if the unit is opened!)
♦ Do not install the unit in direct sunshine or in close
proximity of heaters!
♦ The unit is designed to be installed inside in heated
rooms. Never install the UPS in the vicinity of water or
in an excessively damp environment!
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♦ Condensation may occur if the UPS is brought from a
cold environment into the room where it is to be
installed. The UPS must be absolutely dry prior to startup. As a result, leave it to acclimatise for at least two
hours.
♦ Never connect the mains input and the UPS output!
♦ Ensure that no fluids or foreign bodies can penetrate
the UPS!
♦ Do not block the air vents of the unit! Make sure, for
example, that children do not insert any objects in the
ventilation openings!
♦ Do not connect household appliances such as
hairdryers to the UPS!
♦ The mains connection should be near the unit and
easily accessible to facilitate disconnecting the AC
input or pulling out the plug!
♦ During operation, do not disconnect the mains
connection cable from the UPS or from the socket
outlet in the building (shockproof socket), otherwise the
protective grounding of the UPS and all the loads
connected to it will be cancelled.
Danger! Electric shocks!
Even after the mains voltage has been
disconnected, the components within the UPS
remain connected to the battery and can thus
cause electric shocks. It is therefore imperative
to disconnect the battery circuit before carrying
out any maintenance or repair work!
If it is necessary to replace the battery or carry
out maintenance work, this must be done by or
under the supervision of a specialist familiar with
batteries and the necessary safety precautions!
Only authorised persons are allowed in the
vicinity of the batteries!
12
When replacing the battery, the following must be observed:
Only ever use an identical, maintenance-free sealed lead
battery with the same data as the original battery.
Danger! Explosive!
Never throw batteries into open fire. Never open
or damage batteries. (Electrolyte may leak out
and damage skin and eyes. It may be toxic!)
Batteries can cause electric shocks and high
short-circuit currents.
Therefore, take the following safety precautions when working
with batteries:
♦ Take off watches, rings and other metallic objects!
♦ Only use tools with insulated handles!
For personal safety reasons, never switch on the
main switch when the mains connector of
PROTECT A. is disconnected!
13
3.3CE Certificate
14
3.4Technical Data
Type rating
PROTECT A.500500 VA / 300 W
PROTECT A.700700 VA / 420 W
UPS input
Nominal connection voltage220 / 230 / 240 Vac
Voltage range without battery170 Vac to 280 Vac
Frequency (automatic detection)50 / 60 Hz
ConnectionNon-heating appliance
UPS output
Rated output voltage /230 Vac
AVR technology
Rated output voltage in ±10%
battery operation
Frequency in battery operation50 Hz / 60 Hz ±1Hz
Nominal output current2.2 A (PROTECT A.500)
Changeover time
in the event of a mains failure2-6 ms (typical)
Type of voltageapproximated sine
Connection4 non-heating appliance
Protection against over-yes
temperature and short circuit
connector IEC320 C14
3.0 A (PROTECT A.700)
connectors IEC320 C13
with overvoltage protection,
3 with UPS back-up
Battery
Autonomy time at nominal load2 min
Exhaustive discharge protection/yes
protection against excess load
15
Charging time
(to 90 % of rated capacity)8 h
TypeSealed, maintenance-free
PROTECT A.500Block battery 12 V / 7 Ah
e.g. CSB, type GP1272F23-5 years acc. to EUROBAT
Yuasa, type NP7-12DConnection plug 6.3 mm
Panasonic, type LC-R127R2P (Faston 250)
PROTECT A.700Block battery 12 V / 9 Ah
e.g. CSB, type HR1234WF23-5 years acc. to EUROBAT
Yuasa, type NPW7-12DConnection plug 6.3 mm
Panasonic, type UP-RW1245P1 (Faston 250)
Communication
InterfacesUSB and RS232
Shutdown software on CDFor all common operating
systems, e.g. Windows,
Linux, Mac, Unix, FreeBSD,
Novell, Sun
General data
Inherent noise (1 m distance)< 40 dB(A)
Operating temperature range0 °C - 40 °C
Humidity0 to 90 %
(without condensation)
Installation heightUp to 1000 m
at nominal output
Housing colourSilver/black
Dimensions W x H x D [mm]100 x 140 x 330
Weight [kg]6 kg (PROTECTA.500)
6.5 kg (PROTECT A. 700)
Cooling typeIncreased natural air cooling
Storage temperature range-15° C to +50° C
(UPS electronics)
UPS with integrated battery0 °C to +40 °C
ConformityCE
16
Directives
Claims for damage during transport must always
The PROTECT A. meets the product standard EN 50091.
The CE mark 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
instructions described in the operating instructions are
observed.
For 73/23 EEC low-voltage directive
Reference numberEN 62040-1-1 : 2003
For 89/336 EMC directive
Reference numberEN 50091-2 : 1995
4Set-up
4.1Unpacking and Inspection
The unit has been completely checked and inspected.
Although the device has been packed and shipped with the
usual degree of care, damage during transport cannot be
ruled out completely.
EN 61000-3-2 : 1995
EN 61000-3-3 : 1995
be made with the transport company!
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Check the shipping container for damage on arrival. If
necessary, ask the transport company to check the goods
and make a record of the damage in the presence of the
transport company employee and report the damage to the
AEG representative or dealer within eight days of delivery.
17
Check the content is complete:
♦ PROTECT A. with 500 or 700 VA
♦ Mains connection cable with shockproof plug
acc. to CEE 7/7
Second mains connection cable with UK plug
acc. to BS 1363
♦ Two device connecting cables
♦ USB / RS232 communication cable
♦ Management software “CompuWatch” on CD
♦ Operating instructions
Please contact our hotline (see page 5) in case of any
discrepancy.
The original packaging provides effective protection against
mechanical shocks and should be retained so the unit can be
transported safely later on.
Please keep the plastic packaging bags away
from babies and children in order to safeguard
against suffocation accidents.
4.2Installation Site
PROTECT A. is designed to be installed in a protected
environment. When installing the unit, pay attention to such
factors as sufficient ventilation and suitable ambient
conditions.
PROTECT A. is air-cooled. Do not obstruct the
air vents!
The UPS should preferably be operated at room
temperature (between 15° C and 25° C).
Install the UPS in a room that is dry, relatively dust-free and
free of chemical vapours.
Make sure that no magnetic storage media are stored and/or
operated close to PROTECT A.
Check the nameplate to make sure the voltage
and frequency data correspond to the values
applicable to your loads.
18
4.3Connections, Operating and Display Elements
Front
1 Main switch of the UPS
(mains switch)
2 LED displays:
Green LED: Mains/normal operation
Yellow LED: Battery operation
Red LED:Warning/fault,
battery renewal indication
Rear
1 Load connections with
overvoltage protection and
UPS backup
2 Mains connection (UPS input)
with input fuse and integrated
back-up fuse
3 Data interface for modem/ fax/
phone (RJ11)
4 RS232 communication interface
(SUB-D 9-pin socket)
5 USB connection
6 Load connection with direct mains
supply (with overvoltage protection) –
without UPS back-up!
19
5Installation and Operation
5.1Check
Remove the UPS from its transport packaging and check that
it has not been damaged in transit. If you find any damage,
pack the unit up again and send it back to where you
purchased it.
5.2Installation
Install the UPS unit in a protected location where there is an
adequate air supply and where it will be largely free from dust
build-up, corrosive vapours and electrically conductive
contamination.
Do not operate your UPS where it is exposed to high ambient
temperatures or atmospheric humidity. Set up the UPS at
least 20 cm away from the monitor in order to avoid
interference.
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5.3Charging
The battery is charged irrespective of the setting
8 hours
The PROTECT A. is supplied with its battery fully charged.
Nevertheless, energy may have been lost during transport, so
the battery should be fully recharged before it is used for the
first time.
Connect the input of the UPS (no. 2 in the figure in chapter 4.3
on page 19) to the mains connection cable provided and plug
the mains connector into a suitable shockproof socket. Allow
the UPS to charge up for about 8 hours without any load (i.e.
without any devices such as computers, monitors, etc.
connected to it).
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of the main switch on the front of the UPS.
5.4Connecting the Load (e.g. computer)
Connect your loads to the individual UPS backed-up output
sockets on the rear of the UPS (chapter 4.3 / no. 1 / pg.19).
21
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Note that the additional output socket identified
in white has a special property (chapter 4.3 / no.
outputs. It is not backed up by the UPS, nor can
it be switched off using the main switch of the
UPS. It is intended for loads that should be
protected against overvoltage but do not
necessarily need a continued power supply
mains failure.
6 / pg.19).
This is always live irrespective of the other
(emergency power) in case of a
Limit the power to max. 500 W.
5.5Modem/Phone Connection (data line protection)
Connect the incoming phone line into the “IN” connection on the
back of the PROTECT A.
Connect the data terminal unit (phone, fax, modem) to the “OUT”
socket.
The data line protection has been designed for
RJ11 and does not support network cables
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(RJ45); these should be protected by external
measures if necessary.
Data lines are not supplied with the UPS.
5.6Communication Connection,
Connection with USB or Serial Cable
In order to allow unsupervised shutdown of the operating
system, connect the RS232 or USB cable as shown in the
drawing.
The USB connection is automatically detected.
22
The interfaces are mutually exclusive. There is no
provision for simultaneous
operation of RS232
i
and USB.
5.7Operation
Once you have connected the UPS to a suitable mains
connection, you can start operation using the UPS main
switch.
Switching ON and OFF:
Normally, the UPS operates continuously. The UPS now
supplies the output with voltage, this being signalled by the
green “Normal” LED which lights up permanently (chapter 4.3
/ no. 2 / pg. 19).
5.7.1Normal Operation
During normal operation, i.e. when mains voltage is available,
the built-in battery charger keeps the battery fully charged and
the mains voltage monitoring system switches the inverter to
standby mode.
To switch on, press the main
switch on the front of the UPS
(chapter 4.3 / no. 1 / pg.19).
You must be able to feel this
engage in its 2nd position.
Press the main switch again
to switch off the UPS.
23
The connected loads are powered using the monitored and
filtered mains voltage, which is additionally stabilised by the
integrated A.V.R. control unit. The green “Normal” LED shows
that the unit is active.
5.7.2Battery Operation / Autonomous Operation
When there is a mains failure or if the input voltage moves
outside the tolerance range, the inverter automatically
switches over to autonomous mode and supplies the loads
with voltage from the battery. This drains the capacity of the
battery and it is discharged. This status is signalled by the
green “Battery” LED flashing as well as an intermittent
acoustic signal (chapter 4.3 / no. 2 / pg. 19).
If the UPS does not automatically return to normal operation
after a few minutes, close all your work as usual and switch
off the loads (e.g. PC) before the battery is fully discharged.
This lengthens the service life of the battery! Switch OFF the
UPS by pressing the main switch.
During the discharge process as the battery capacity
consistently drops, the “Battery” LED flashes, accompanied
by an intermittent acoustic signal (once every 10 seconds).
The electronics of the UPS switch off the voltage supply of the
loads shortly after the battery undervoltage limit is reached
(“Battery” LED flashes every second; acoustic signal sounds
every second).
Never store the unit in this condition! The discharged battery
system should be recharged within a week at the latest.
When the mains voltage comes back, the UPS must be
switched on again using the main switch (only applies if it was
previously switched off manually), in order to recharge the
battery and thus store sufficient battery capacity for any
possible future mains failures.
The battery is automatically charged when the mains is
present. The battery charging time (to 90% of rated capacity)
is about 8 hours after being previously fully discharged.
5.7.3System Diagnosis / Fault Test
If the monitoring electronics detect an irregularity, the red
“Fault” LED is triggered at the same time as an acoustic fault
24
signal. This might occur because the battery undervoltage
limit has been reached, if the temperature has risen too high,
or it might indicate that the internal battery system needs to
be renewed.
Faults detected and signalled during diagnosis
must be rectified, otherwise there is a risk of
load voltage loss if a mains failure occurs!
5.7.4Shutdown and UPS Management Software
The “CompuWatch” software specially developed for these
purposes by AEG continuously checks the mains supply and
the UPS status.
In conjunction with the “intelligent” UPS, this ensures that the
availability of IT components and data security are
guaranteed.
The “CompuWatch” shutdown software supports different
operating systems, e.g. Windows Linux, Unix, Mac OS X, etc.
Refer to the manual on the CD for details about installing the
software on the various operating systems.
Other tips and information as well as updates are available
from our website at www.AEGpartnerNet.com
PRODUCTS >> Software >> CompuWatch.
25
>>
6Displays and Troubleshooting
6.1Warning Sounds
Warning
sound
Sounds every 10
seconds
Sounds every
second
Sounds every two
seconds
Sounds twice every
second
Sounds every 2
seconds;
continuous warning
sound after 50 min
Sustained warning
sound
Meaning
UPS is operating in battery mode.
UPS is running in battery mode and will shortly
shut down (battery system has reached the battery
undervoltage limit).
Battery system faulty, it may have to be renewed
(battery diagnosis negative).
UPS output is overloaded.
Overload of the step-up/down converter due to
UPS overload.
UPS faulty.
6.2General Troubleshooting and Fault Rectification
FaultCauseSolution
No LED display on
the front cover plate
Alarm buzzer sounds
continuously with
normal AC supply
Battery missingInsert the battery and first
Battery faultRenew the battery with a
On/off switch not pressed
UPS overloadCheck whether the load
charge it up for at least 8 hours
battery of the same type
Press the switch again
matches the UPS capacity
indicated in the technical
data
26
Data backup time is
into the
Check the software settings.
only very short on
power failure
Mains normal, but
“Battery” LED flashes
Communication
between UPS and
computer interrupted
UPS overloadRemove loads that are less
Battery voltage is too low Charge the battery for at
Battery fault die to high
temperature in the
operating environment or
incorrect treatment of the
battery;
advanced battery ageing
Fuse blownDe-energise the unit; insert
Mains cable looseInsert the plug firmly
Software is not installed
correctly
Cable not connected
properly
important
least 8 hours
Renew the battery with a
battery of the same type
a replacement fuse.
non-heating appliance
socket of the UPS.
Support is available at
www.AEGpartnerNet.com
Check that the RS232/USB
cable is firmly connected to
the COM or USB port of the
computer and confirm the
settings again
If you cannot solve the problem that has occurred, stop the
entire procedure, switch off the UPS and disconnect the
connector from the socket. Please contact our hotline in this
case (see page 5).
Please have the serial number of the unit as well as the
purchase date at hand. The hotline will provide you with
technical support and can inform you about further
procedures once you have described the problem.
27
7Maintenance
The PROTECT A. consists of state-of-the-art, non-wearing
components. We do, however, recommend regular visual
checks of the unit to maintain its continuous availability and
operational reliability. Check whether:
♦ there is any mechanical damage or foreign bodies can
be found in the system,
♦ any conductive dirt or dust has accumulated in the unit,
♦ accumulation of dust affects heat supply and
dissipation.
CAUTION:
The PROTECT A. must be disconnected from
the power supply prior to carrying out the
following work.
If large quantities of dust have accumulated, the unit should,
as a precaution, be cleaned with dry compressed air, in order
to ensure adequate heat dissipation.
The intervals at which visual checks should be performed are
primarily determined by the site conditions.
Checking the battery
Progressive ageing of the battery system can be detected by
regular capacity checks. Every 12 months, perform
measurements to compare the achievable standby times, e.g.
by simulating a mains failure. In this case, the load should
always have approximately the same capacity demand. Have
the battery system renewed if the time drops drastically
compared to the previous measurement.
28
7.1Battery Replacement
The following precautions should be taken
If you are not qualified to renew the battery, do
not try to open the battery cover. Leave this
ATTENTION:
A battery can cause an electric shock, and
represents a considerable hazard if handled
incorrectly.
before the battery is renewed.
♦ Switch off the UPS and disconnect the mains cable
from the socket.
♦ Remove any rings, wristwatch and other metallic
objects you may be wearing.
♦ If the replacement battery kit is damaged in any way or
shows any signs of leaking, please contact your dealer
immediately.
♦ Recycle or dispose of the used battery appropriately.
Never dispose of batteries by burning. The batteries
might explode.
Note:
i
work to qualified personnel.
29
8Storage and Disposal
Long storage times without charging or
e battery at regular intervals may
Storage
discharging th
lead to permanent damage of the battery.
If the battery is stored at room temperature (20° C to 30° C) it
will automatically discharge at a rate of 3-6% per month due
to internal reactions. Storing the battery at temperatures
above room temperature should be avoided. A high storage
temperature also means a higher rate of battery degradation.
Batteries that are stored at room temperature should be
recharged every six months to maintain their full capacity and
service life.
Connect PROTECT A. to the mains before
putting it into storage, in order to make sure
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Disposal
In the interest of environmental protection and recycling,
please dispose of the individual system components in
accordance with the regulations and legal guidelines when
permanently taking the system out of operation.
that the battery is fully charged.
The charging time should be at least 8 hours.
30
9List of Terms
9.1Technical Terminology
AVRAutomatic Voltage Regulation
DC/DC boosterCircuit technology for increasing a DC voltage
EPOE
PFCP
Appliance protectionTerm from overvoltage technology
Class DSee appliance protection
LEDL
SNMPS
VFDOutput V
VIOutput V
VFIOutput Voltage and Frequency Independent
Automatic voltage regulation against mains
voltage deviations
to a higher voltage level
mergency Power Off
Device for emergency shutdown
ower Factor Correction
Circuit technology for minimising system
disturbances (particularly important when
connecting non-linear loads)
Classic mains overvoltage protection consists
of a lightning surge arrester (Class B),
overvoltage protection (Class C) and, finally,
what is referred to as appliance protection
(Class D) – see also
http://www.phoenixcontact.de (“TRABTECH”
topic) for example
ight Emitting Diode
Electronic semi-conductor component,
commonly referred to as an LED, used for
optic signalling.
imple Network Management Protocol
A protocol encountered frequently in networks
for managing / handling components
from mains supply
The UPS output is dependent on mains
voltage and frequency fluctuations. Earlier
designation: OFFLINE
supply
The UPS output is dependent on mains
frequency fluctuations, but the mains voltage is
prepared by electronic / passive voltage
control units. Earlier designation: LINEINTERACTIVE
from mains supply
The UPS output is independent from mains
voltage and frequency fluctuations. Earlier
designation: ONLINE