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3

1.  introduction

1.1. 

Acknowledgement letter

we would like to thank you in advance for the trust you have placed in 
us by purchasing this product. Read this instruction manual carefully 
before starting up the equipment and keep it for any possible future 
consult that can arise.

we remain at you entire disposal for any further information or any 
query you should wish to make.

yours sincerely

KESS Power Solutions GmbH 

 

ˆ

 The equipment here described can cause important physical 
damages due to wrong handling. This is why, the installation 
of equipments with power blocks, maintenance and/or fixing 
of the here described equipment must be done by our staff 
or specifically authorised.

 

ˆ

According to our policy of constant evolution, we reserve the 
right to modify the specifications in part or in whole without 
forewarning. 

 

ˆ

 All  reproduction or third party concession of this manual is 
prohibited without the previous written authorization of our 
company.

1.2.  Using this manual

The target of this manual or publication is to provide information re-
garding the safety and to give explanations about the procedures for 
the installation and operating of the equipment. This manual and rest 
of support documentation has to be read carefully before installing, 
location change, setting or any handling of any kind, including the 
start up and shutdown operation.

Keep this document for future consults.

in the next pages, the “equipment” and “KESS Support-Team” terms, 
are referred to the Uninterruptible Power Supply or UPS and Service 
and Technical Support respectively.

1.2.1. 

Conventions and used symbols

Some or all the symbols of this section can be used and shown in the 
equipment and/or in the description of this document. it is advisable 
to be familiar with them and understand their meaning.

• 

«Danger of electrical discharge» symbol. Pay special 
attention to it, both in the indication on the equipment 

and in the paragraph referred to this user’s manual, because it 
contents features and basic information for person safety. To not 
respect these indications can result in serious incidents or even 
death due to electrical discharges .

• 

«warning» symbol. Carefully read the indicated paragraph 
and take the stated prevention measures, so it contents 

basic safety instructions for persons. To not respect such 
instructions can cause serious incidents. Those indications with 

“CAUTion ” symbol content features and basic instructions for 
safety of the things. To not respect such instructions can damage 
the goods.

• 

«Precaution» symbol. Read the paragraph text and take 
the stated preventive mediums, it contents the basic 

instructions and features for the equipment safety. To not respect 
these indications can create material damages on the own 
equipment, installation or loads.

• 

«notes of information» symbol. Additional topics that 
complement the basic procedures. These instructions are 
important for the equipment use and its optimum 

efficiency.

• 

«Main protective earthing terminal» symbol. Connect the 
earth cable coming from the installation to this terminal.

• 

«Earth bonding terminal». Connect the earth cable coming 

from the load and the external battery cabinet to this terminal.

• 

Preservation of the environment: The presence of this 

symbol in the product or in their associated documentation 
states that, when its useful life is expired, it will not be 

disposed together with the domestic residuals. in order to avoid 
possible damages to the environment, separate this product from 
other residuals and recycle it suitably. The users can contact with 
their provider or with the pertinent local authorities to be informed 
on how and where they can take the product to be recycled and/or 
disposed correctly.

• 

Alternating Current A.C.

• 

Direct Current D.C.

• 

Recycle

1.2.2.  For more information and/or help

For more information and/or help of your specific unit, contact our 
KESS Support-Team.

1.2.3.  Safety instructions

•  Check the data of the nameplate are the required by the instal-

lation.

• 

never forget that the UPS is a generator of electrical en-
ergy, therefore the user has to take precautions about 

against direct and indirect contacts. 
its energy source, a part from the AC mains, lies on the batteries, 
usually included in the same case or cabinet that the equipment 
electronics. However, some models and/or extended back up 
times, batteries can be supplied in a separate case or cabinet.
if the batteries are connected to the equipment and their pro-
tections are switched “on”, whenever they are, it is irrelevant if 
the UPS is or not connected to mains, as well as the status of the 
mains protection. The outlets or output power blocks will supply 
voltage meanwhile the battery set has energy.

• 

Compliance as regards to “Safety instructions“ is manda-
tory, being the user the legal responsible regarding to its 

observance and application. Read them carefully and follow the 
stated steps in the established order, keep them for future con-
sults that may arise. 

• 

if the instructions are not in total or partial and in special referred 

to the safety, do not carry on with the installation or commis-

sioning tasks, because there could be a risk on your safety or on the 
other/s persons, being able to make serious injuries even death, also it 

Summary of Contents for KESSUPS 91RT

Page 1: ...UPSseriesKESSUPS91RT 700VA 10kVA Uninterruptible Power Supply User s manual...

Page 2: ...3kVAequipmentsonly 4 3 8 Dry_out terminals drycontactforalarm 0 7to3kVAequipmentsonly 4 3 9 Connectioninparallel 4 3 9 1 Introductiontotheredundancy 4 3 9 2 Installationandparalleloperating 4to10kVAeq...

Page 3: ...amage the goods Precaution symbol Read the paragraph text and take the stated preventive mediums it contents the basic instructionsandfeaturesfortheequipmentsafety Tonotrespect these indications can c...

Page 4: ...UPSdrivestheleakagecurrentof theloaddevices Anisolatedearthcablehastobeinstalledas part of the circuit that supplies the equipment Cross cable section and its features will be same as the power supply...

Page 5: ...art from the implicit stated risks any action that make the modification internal or external of the equipment or just only the simple intervention inside of itself which is not stated in this documen...

Page 6: ...y from the equip ment in another cabinet case or rack with the interlink cables among them Do not modify its length In those equipments requested without batteries their acquisi tion installation and...

Page 7: ...the event of any modification or intervention in the product by the cus tomer s side This is a product for its use in commercial and industrial ap plications so restrictions and additional measures c...

Page 8: ...91RT models from 4 to 6 kVA 3HE from 8 to 10 kVA 5HE Battery module from 0 7 to 3 kVA Battery module from 4 to 6 kVA 3HE from 8 to 10 kVA 5HE Fixing screws Front cover Fixing screws Front cover Fixing...

Page 9: ...put terminals IEC AC outlets LS2 Modelsfrom0 7to2kVAstandard USB COM port RS232 COM port IEC inlet for AC power supply Main earth for battery module Connectorfor remoteON OFF Auxiliary contact connect...

Page 10: ...other module Battery module for equipments from 0 7 to 3 kVA Earth bonding terminal to be connected to the equipment and with other module Battery module for equipments from4 to 6 kVA The connection o...

Page 11: ...rface or SNMP for controlling the equipment via Internet Intranet Models from 4 to 10 kVA allow the parallel connection of a second equipment of the same features for a redundant configuration or to i...

Page 12: ...SNMP adapter The big IT systems based on LANs and WANs that integrate servers with different platforms they have to include an easy way of control ling and management at the manager system disposal Th...

Page 13: ...ing C characteristic for circuit breaker Regardingthesize theywillbeasminimumtothecurrentsstated in the nameplate of each UPS In the nameplate of the equipment there are only printed the nominal curre...

Page 14: ...only 1 metallic piece and bolt to joint the battery module with the equipment on tower format Once the reception is finished it is advisable to pack the UPS and the battery module s again till its com...

Page 15: ...nofthispowerrangeintherackcabinetwhenthemanipula tionsaredonebyhand thebatteryblockhastoberemovedfrom the equipment Proceedasfollowstoremovethebatteryblockorpack basedon one pack for 4 to 6 kVA models...

Page 16: ...r side of the equipment see figure 11 All the instructions relating to connections will detailed later on less those ones regarding the battery connection Therefore this section will only describe the...

Page 17: ...ment vertical There are no supports or stabilizers A A B Fig 7 Vertical tower type assembling 4 2 5 3 Vertical tower type assembling with extended back up time battery module The description of this s...

Page 18: ...8 Model in vertical tower type assembling with extended back up time battery module Regarding the connections of the UPS with the battery module in models up to 6 kVA make the following steps but rea...

Page 19: ...frame of the cabinet by means of the screws B 4 2 5 5 19 rack cabinet assembling with extended back up time battery module This section describes a single equipment with only one battery module see fi...

Page 20: ...seconnectortoconnectitwith anotherbatterymodule Socketforbattery module Wireofbatterymodule Fig 11 Batterymoduleconnectionfor8and10kVAequipments 4 3 Connection Cross cable section used in the power su...

Page 21: ...t the circuit diagram of the particular Backfeed protection for the equipment without bypass line There can be no derivation in the line that goes from the Backfeed protection to the UPS as the safety...

Page 22: ...2 and respect the circuit diagram of the par ticular Backfeedprotection fortheequipmentwithbypassline There can be no derivation in the line that goes from the Backfeed protection to the UPS as the sa...

Page 23: ...the load connected to the respective outlet has to be checked otherwise the protection will be activated and deactivated cyclically and therefore the loads will suffer the consequences For hardwired...

Page 24: ...ting the power supply to the input power block Make sure that all the loads connected to the UPS are only con nectedtotheprotectiveearthbondingterminal Thefactof not restricting the earthing of the lo...

Page 25: ...3 9 2 Installationandparalleloperating 4to10kVA equipmentsonly Communication line COM is a very low voltage circuit of safety Topreservethequality ithastobeinstalledseparate from other lines that have...

Page 26: ...s the difference in the length between the input and output cables of the equipments has to be lower than 10 Input circuit breakers Output circuit breakers Manual bypass UPS nr 1 Input To loads UPS nr...

Page 27: ...other machines or devices through the 5 dry contacts supplied in the terminal strip included in the same card and to each one of them an alarm of the 8 available can be as signed see table 6 Also the...

Page 28: ...of the monitoring software 4 3 12 Considerations before starting up the connected loads It is recommended to charge the batteries for 2 hours as minimum before using the UPS for first time When sup p...

Page 29: ...3 seconds to shut down the inverter The acoustic alarm will beep for 3 sec The equipment will be established on Bypass mode When finishing the previous action there is still voltage at the UPS output...

Page 30: ...hrough the bypass Turn On the output circuit breaker switch of the distribution panel corresponding to the new integrated equipment The complete parallel system will supply output voltage through the...

Page 31: ...tem again 6 Control panel with LCD 6 1 Control panel Fig 20 Control panel view Button Function Description Inverter start up With no AC power supply and battery connected to the equipment press the bu...

Page 32: ...te In ECO mode Blue 65 State In converter mode Blue 71 Warning EPO active Blue 72 Warning On maintain Bypass only models of 4 10 kVA Blue 81 Fault Heatsink over temperature Red 82 Warning Ambient over...

Page 33: ...passwithoutputvoltagescreen Bypass without output voltage The UPS is running on bypass mode without output voltage Fig 25 Bypasswithoutoutputvoltagescreen ECO mode Once the UPS is started up the energ...

Page 34: ...se the UPS could fail Fig 28 Warningscreen Fault When a fault occurs it reveals that some serious problems have happened the UPS will break the output voltage or will transfertobypassandthealarmwillbe...

Page 35: ...ame main screen when pressing the key for more than 1 sec the Structure of the main menu will be displayed see figure 33 Todisplaythedifferentsubmenus pressthekeys or forless than 1 sec considering th...

Page 36: ...see figure 34 Whenpressingthekey formorethan1sec theLCDwillshow the UPS status screen of the main menu structure again Press 1 sec Press o 1 sec Event logger structure menu Main menu structure Press...

Page 37: ...ter When pressing the key for more than 1 sec the LCD panel will display the screen Event log from the main menu structure again Control submenu for 0 7 to 3 kVA models 6 3 4 Measurement submenu When...

Page 38: ...is single or it is parallel and power supply to load s is broken To restore the normal condition the EPO button has to be de activated previously close the circuit again and enter into the ClearEPOsta...

Page 39: ...ctions that could satisfy a special ap plication of the user In case you require any of these special functionalists contact the KESS Support Team to change the standard configuration from fac tory 6...

Page 40: ...as battery has to be charged every 2 months The charging time has to be 12 hours as minimum Under normal conditions the battery lifetime is from 3 to 5 years at20 C Eurobat Ahighertemperaturecancaused...

Page 41: ...ment is too high Check the UPS cooling and ambient temperature of the room 93 Back Feed only 3 kVA On battery mode bypass has voltage Transfer to manual bypass and consult our KESS Support Team Do not...

Page 42: ...9 Troubleshooting guide Warning indications 7 2 3 Troubleshooting guide Other circumstances Circumstance or condition Possible cause Solution Code DescriptionintheLCDpanel 01 Bypass Abnormal Bypass p...

Page 43: ...ered product UPS KESSUPS 91RT series 7 4 Description of the available maintenance and service contracts For the UPS series KESSUPS 91RT additional warranty services are available as an option Also pre...

Page 44: ...62040 3 non linear load Transient recover time of the output voltage with load step 0 100 0 9 Transient recover time of output voltage with load step 20 100 20 6 Frequency With mains present synchron...

Page 45: ...emperature 15 50 C Storage temperature without batteries 20 70 C Operating altitude 1000 m a s l for high altitude correct it according to table 14 Relative humidity 0 95 non condensing Protection deg...

Page 46: ...KESS Power Solutions GmbH Gentzgasse 55 A 1180 Wien T 43 0 1 4704731 0 info kess at www kess at MA_16_03_KESSUPS_91RT_E...

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