Liebert NXC UPS - Emerson Network Power
Contents
1. For time when maintenance is required or when the inverter cannot maintain voltage to the load due to sustained overload current limiting or malfunction a bypass circuit shall be provided for each single module that forms part of the UPS system The modular bypass circuit s shall provide for isolation of the inverter s and provide a path for power directly from an alternate AC bypass source The UPS control shall constantly monitor the availability of the inverter bypass circuit to perform a transfer The inverter bypass of each module shall consist of a static transfer switch operating in conjunction with the inverter output static switch The static switches shall denote the solid state devices that operating simultaneously can instantaneously connect the load to the alternate AC source A Manual Load Transfers A manual load transfer between the inverter output and the alternate AC source shall be initiated from the control panel B Automatic Load Transfers An automatic load transfer between the inverter output and the alternate AC source shall be initiated if an overload or short circuit condition is sustained for a period in excess of the inverter output capability or due to a malfunction that would affect the output voltage Transfers caused by overloads shall initiate an automatic retransfer of the load back to the inverter only after the load has returned to a level within the rating of the inverter source C Back feed Protection2. 5 6 8 ANSI C62 41 EN60950 EN60529 e IEC 60146 1 1 The UPS is CE marked in accordance with EEC directives 73 23 low voltage and 89 336 electromagnetic compatibility The Quality System for the engineering and manufacturing facility certificated to conform to Quality System Standard ISO 9001 for the design and manufacture of power protection systems for computers and other sensitive electronics ENP Riis Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 1 3 SYSTEM DESCRIPTION 1 3 1 Design Requirements A For non redundant operation applicable not applicable the UPS system shall be sized to provide a minimum of kVA kW output B For redundant operation applicable not applicable the UPS system shall be sized to provide a minimum of kVA kW output with ___ module s out of service Load voltage and bypass line voltage will be___ VAC three phase and neutral Input voltage will be____VAC three phase The battery system shall have a capacity of___kW for at least____ minutes at 25 C The battery will be installed In internal battery compartment On open racks On cladded racks In battery cabinets 1 3 2 Modes of Operation The UPS shall be designed to operate as an on line double conversion reverse transfer system in the following modes A Normal UPS inverters continuously powers the critical AC load The rectifier chargers derives power from the mains A
3. C AC Input Current Limiting ENP 11 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 The maximum Input current limit can be reduced at 100 for generator operation D Input Power Walk in The rectifier charger shall provide a feature that limits the total initial power requirements the power of rectifier will increase gradually in steps and power walk in time for 5 second E Mains AC Input phase sequence reverse protection Before soft starting of the rectifier if the phase sequence of the main AC input is reversed the rectifier will not start and an alarm displayed on the LCD F Input over Current Protection Each AC phase is individually fused so that loss of any semiconductor shall not cause cascading failures 2 3 2 Battery converter Batteries shall be VRLA Maintenance Free type Constant current boost charging constant voltage boost charging float charging float charging compensation and EOD protection are available for different kinds of batteries A Charging In addition to supplying power to the load the battery converter shall be capable of producing a battery charging current sufficient to replace 95 of the battery discharge power within ten 10 times the discharge time Ripple voltage at the battery terminal RMS should be less than 1 and ripple current must not exceed 5 of C 10 Ah rating nominal discharging current Number of battery is 32 40 blocks nominal voltage is 12V per b
4. Temperature Compensation Temperature Sensor Position Shared Battery System Configuration Parallel Requisite units Parallel Redundant units ECO Mode Output Frequency level Output Voltage level LBS Function Command password Protocol 3 in 3 out 3 in 1 out e Command Battery Maintenance test Battery Capacity test System test Stop testing Forcing charge Stop forcing charge e Version Monitor Version Rectifier Version Inverter Version ENP 15 10 20kVA Parallelable UPS System Guide Specifications Version 1 0 C Alarms and Status Information Alarm and status conditions shall be reported at a single module UPS system or at a paralleled module UPS or both The display and control panel shall report the alarms and status information listed below Each alarm shall be visually displayed in text form and an audible alarm will sound for each alarm displayed see the following table E A Input Disconnect Fault BA R Battery float charging Normal Mode Control Power 1 Fail Battery fault Battery Mode Mains Phase Reversed Battery Replace Bypass Mode Mains Voltage Abnormal Battery Low Pre warning Check UPS output Mains Under voltage Battery stop charging Fan Fault Mains Frequency Abnormal Battery Charger Fault Operation Invalid RECTIFIER INPUT INDUCTOR Battery boost charging Manual On Rectifier communication fail Battery Discharging Manual O
5. Using another optional customer supplied contactor located upstream of the UPS Bypass input and whose trip coil control voltage comes from the input bypass line voltage the UPS shall provide a normally closed contact to be used for isolating the bypass source to protect the operator against back feed of energy resulting from a short circuit of the bypass line SCRs That is in the event that the UPS works on Battery mode and no main input Rectifier and Bypass is available the contactor cannot be closed So if the bypass line SCRs are short circuited the UPS will be still disconnected from the Bypass supply ENP 13 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 2 3 5 Internal Maintenance Bypass A fully rated bypass circuit shall be fitted on all single module UPS systems to provide an alternative path for power flow from the alternate AC supply to the critical load for the purpose of maintaining the UPS when it is completely powered down A Maintenance Bypass protection shall be provided it will be activated when the Maintenance Bypass Switch is closed before the inverter shutdown 2 3 6 Man Machine Interface MMI A UPS Display and Control Panel Each UPS module shall be equipped with a 320 x 240 dot graphic LCD display This shall automatically provide all information relating to the current status of the UPS as well as being capable of displaying metered values The display shall be menu driven permitting the use
6. for a Parallelable Digital Uninterruptible Power System UPS with internal battery compartment capable of supplying critical power without causing additional footprint The UPS shall automatically maintain AC power within specified tolerances to the critical load without interruption for specified duration as per battery run time during failure or deterioration of the mains power supply The UPS shall be expandable by paralleling additional modules of the same rating to provide for module redundancy or load growth requirements The manufacturer shall design and furnish all materials and equipment to be fully compatible with electrical environmental and space conditions at the site It shall include all equipment to properly interface the AC power source to the intended load and be designed for unattended operation 1 2 STANDARDS The UPS and all associated equipment and components shall be manufactured in accordance with the following applicable standards e Safety Requirements EN 50091 1 IEC 62040 1 AS 62040 1 EMC EN 50091 2 IEC 62040 2 AS 62040 2 C3 UPS classification according to CEI EN 62040 3 EN50091 3 IEC 62040 3 VFI SS 111 The above mentioned product standards incorporate relevant compliance clauses with generic IEC and EN standards for electromagnetic emission and immunity 61000 series construction 60146 series and 60529 and safety 60950 For more details see below e IEC 61000 3 11 12 e IEC 61000 4 2 4
7. handling Maximum cabinet height shall be 1 24 meters for 10KVA 20kVA UPS range 2 1 4 Cooling Adequate ventilation shall be provided to ensure that all components are operated well within temperature ratings Temperature sensors shall be provided to monitor UPS internal temperature Upon detection of temperatures in excess of manufacturer s recommendations the sensors shall cause audible and visual alarms to be sounded at the UPS control panel A separate room ambient temperature sensor shall be provided to allow control of the battery charging voltage with change of temperature The air should flow into the cabinet from the front and ventilate from the rear A minimum clearance of 200mm in the top rear and side panels of the UPS is required for the purpose of ventilation or maintenance and a clearance of 950mm of at the front for maintenance purposes 2 2 EQUIPMENT 2 2 1 UPS System The UPS system shall consist of an appropriate number of single module units to meet capacity and redundancy requirements Each UPS module shall consist of a rectifier battery converter three phase inverter mains bypass static protective devices and accessories as specified Each UPS module shall also include a battery disconnect and battery system ENP 10 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 2 2 2 Configurations The UPS system shall consist of either a single module unit Systems greater than one module shall
8. 5 Lower limit 10 20 30 or 40 default shall be 20 B Frequency Range 10 C Overload Capability Below 105 rated output current continuous operation 105 125 UPS output current 5 minutes 125 150 UPS output current 1 minute 150 400 UPS output current 1 second Greater than 400 output current less than 200 milliseconds Exceeding these range UPS output will stop immediately D Neutral Conductor Sizing 1 5 times rated current 1 3 3 4 Earthing The AC output neutral shall be electrically isolated from the UPS chassis The UPS chassis shall have an equipment earth terminal Provisions for local bonding are to be provided ENP gt Ja Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 1 4 ENVIRONMENTAL CONDITIONS 1 4 1 Operating Ambient Temperature UPS 0 C to 30 C without de rating 35 C 0 9 pf 40 C 0 8 pf Battery 20 C 25 C for optimum battery performance 1 4 2 Storage Transport Ambient Temperature UPS 25 C to 55 C Battery 20 C to 30 C 20 C for optimum battery storage 1 4 3 Relative Humidity 0 to 95 non condensing 1 4 4 Altitude Operating To 1000 m above sea level without de rating 1 4 5 Immunity A Conduction IEC 62040 2 class A B Radiation IEC 62040 2 class A C Harmonic IEC 61000 3 4 D Immunity EN 61000 4 2 Level 3 based on B EN 61000 4 3 Level 3 based on A EN 61000 4 4 AC Power port Level 3 2kV 5kHz based on B Sig
9. C power supply source converting this to DC power to supply the inverters while simultaneously float boost charging the battery system Power supplied by the UPS inverters is to within specified tolerances at rated voltage and frequency B Battery Upon failure of the mains AC power supply source the critical AC load is powered by the inverter which gets without interruption power from the battery system There shall be no interruption in power to the critical load upon failure or restoration of the mains AC power supply source Upon restoration of the mains AC power supply source power to the rectifier initially is restricted by a gradual power walk in Following the short power walk in period the rectifier powers the inverter and simultaneously recharges the battery through the battery converter This shall be an automatic function and shall cause no interruption to the critical load C Off Battery or Frequency Converter When the battery system is taken out of service for maintenance or the UPS is used as a frequency converter it is disconnected from the battery converter and inverter by means of an external disconnects breaker s The UPS shall continue to function and meet all of the specified steady state performance criteria except for the power outage back up time capability D Bypass If the inverter fails or the inverter overload capacity is exceeded or the inverter is manually turned off by user and at this time the inver
10. EMERSON Liebert NXC UPS GUIDE SPECIFICATIONS For a 10 to 20 kVA 50 or 60Hz Parallelable Digital Uninterruptible Power Supply UPS System V 1 ENP ma Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 Contents TAUSUMMARVY 5 20 ta 3 1 2 STANDARD Sui ii a Ud is 3 To SYSTEM DESCRIPTION a eA aR eain idilio dit 4 1 31 Design Requirements tant 4 1 3 2 Modes Of Opera mitad EE ESA e E S TSEAN 4 1 3 3 Performance Reg irements i Sipers ee a eean A 6 1 355 1UPS Module AC pU tae pad E ours 6 1 3 3 2 UPS Module AC Output eneen ae aoa cepacia eaa rt is 6 1 3 3 3 Bypass Statie Willian ea ee EEEE segues EEn KRA EE EEEE 7 13324 AA TET AER NS 7 1 4 ENVIRONMENTAL CONDITIONS coooococcccnococoncnonononcnnnonnnnnnnnnnnnnnnnnn nc nn nnnn RAE a AEE EEA ARAARA 8 1 4 1 Operating Ambient Temperature 0 eee eecsesecssseecesecseesecseesccnaeecesaececsaecaeesecnevscenaeeeesaecateaeeneeaes 8 1 4 2 Storage Transport Ambient Temperature ooconccnccoccnonoccnononnonnnoncnncnonononononnon conc cn nonn coronan nn rn non non nrnnnss 8 1 43 Relative Humidity ico lla ridad 8 VACA Altdo aia odid 8 145 A O a SE eE EE E E EEEE EE ETET S 8 Tto UPS DIMENSION ra E A E EEE O EE A 9 1 6 UPS DELIVERY SUBMITTALS G 0d E OEE E aie nee seaee 9 1IVWVARRAN it A AA A A 9 AS Warranty NN 9 1 72 Battery Warranty ita bs 9 1 8 QUALITYASSURANCE coa 9 1 8 1 Manufacturer Qualifications cccccccscescecssecesscecsseceeccecsaeseeececaeseeesecaeeesseecae
11. ance Requirements The UPS is VFI classified according to IEC 62040 3 producing an output waveform that is independent of both the input supply frequency and voltage 1 3 3 1 UPS Module AC Input A Voltage Range 25 20 of 380Vac 20 20 of 400Vac 15 20 of 415Vac B Frequency Range 40 70Hz C Power Walk In 5 seconds D Power Factor Shall be gt 0 99 at full UPS output load and gt 0 98 at half UPS output load E Generator Adaptability UPS input current limit can be adjusted to suit the generator power rating Wide input frequency range is permissible F Current Distortion Less than 5 at full load UPS output Less than 10 at half load UPS output 1 3 3 2 UPS Module AC Output Three phase 4 wire plus ground A Load Rating 100 continuous load rating at 30 C for any combination of linear and non linear loads UPS will have output rating of 90 for up to 35 C and 80 for up to 40 C B Voltage Stability 1 steady state for balanced loads C Bypass Line Sync Range Field selectable 3Hz 2Hz 1Hz 0 5Hz D Frequency Stability Frequency regulation whilst free running on battery shall be 0 25 Hz If the bypass is available and within limits even if the UPS is on battery operation in this case the output will sync to the bypass Nominal frequency shall be 0 25 E Frequency Slew Rate shall be adjustable from 0 2Hz s to 0 6Hz s for single module and 0 2Hz s for parallel system F Effi
12. ations A minimum of twenty years experience in the design manufacture and testing of solid state UPS systems is required The manufacturer shall be certified to ISO 9001 1 7 2 Factory Testing Before shipment the system shall be fully and completely tested to ensure compliance with the specification ENP 9 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 PRODUCT 2 1 FABRICATION 2 1 1 Materials All materials of the UPS shall be new of current manufacture high grade and shall not have been in prior service except as required during factory testing All active electronic devices shall be solid state Control logic and fuses shall be physically isolated from power train components to ensure operator safety and protection from heat All electronic components shall be accessible from the front 2 1 2 Wiring Wiring practices materials and coding shall be in accordance with the requirements of IEC All electrical power connections shall be torqued to the required value and marked with a visual indicator English tag Provision shall be made in the cabinets to permit installation of input output and external control cabling Provision shall be made for bottom access allowing for adequate cable bend radius to the input and output connections 2 1 3 Construction The UPS shall be housed in an IP20 enclosure designed for floor mounting The UPS shall be structurally adequate and have provisions for fork lift
13. ciency It is defined as output kW input kW e Up to 94 5 at 100 UPS output load at nominal input e Up to 94 at 50 UPS output load at nominal input e Notless than 98 4 at full rated load when supplying the load through the static bypass ENP 6 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 G Phase Unbalance 120 1 for 100 balanced and 120 1 5 for 100 unbalanced loads H Voltage Transients 5 for 100 output load step up or step down Transient Recovery Time 60ms J Voltage Distortion e Less than 2 total harmonic distortion THD for linear loads 0 100 e Less than 5 total harmonic distortion THD for non linear loads 0 100 K Module Overload Capability at Rated Output Voltage e Less than 105 of UPS rated output continuous operation e 105 125 of UPS rated output load for 5 minutes then shift to bypass output e 125 150 of UPS rated output load for 1 minute then shift to bypass output The UPS will achieve the overload mentioned above lt 30 C operating temperature nominal input voltage and when the battery is in a full charged condition e Greater than 150 of UPS rated output with load for 200 millisecond then shift to bypass The UPS will achieve the overload mentioned above with 380 400 415V nominal input and output voltage and when the battery is fully charged 1 3 3 3 Bypass Static Switch A Voltage Range Upper limit 10 15 or 20 default shall be 1
14. face Card The UPS shall have an optional internally fitted network interface card that will provide real time status information over an 10 100 base T Ethernet to for users The network interface card will support SNMP for integration into an ENP monitoring solution or a Network Management System The card supports SNMP traps UPS information will also be available over the network via a web browser via an HTTP page The card is also configurable firmware upgraded via the network using the HTTP web page Telnet session or serial interface USB Configuration properties include device naming and specific service enable disable and control enable disable The card provides configuration and control security through a user name and password B RS 485 Interface Card The UPS shall have an optional internally fitted RS 485 interface card that will provide real time status information over a 2 or 4 wire RS 485 connection The RS 485 Interface Card will support ModBus RTU and JBus 2 4 2 Battery Start The UPS shall be able to start up and run on battery without any incoming mains available The above functionality shall be achieved also when more UPSs up to four units are connected in parallel either for redundancy or for capacity 2 4 4 Battery Compartment The UPS has internal compartments for batteries 32 x 9AH batteries batteries shall be placed in a battery tray inside the UPS cabinet with appropriate cables included Battery compar
15. ff Rectifier block Battery Maintenance Testing Unit Overload Rectifier overcurrent Battery Capacity Testing Operation Invalid Rectifier in setting Battery Reverse Load Impact Transfer Soft Start Fail No Battery Transfer Time out Rectifier Over temperature Battery Period Testing UPS system testing DC BUS BOOSTER BALANCER Auto start Fault Reset Bus Abnormal BYPASS Alarm Silence cancel DC Bus Over voltage Bypass Unable to Trace Turn On Fail Bypass over current Bypass Protection Output Fuse Fail INVERTER Bypass Abnormal Shutdown Setting save error Inverter communication fail Bypass Phase Reversed Protocol version clash Inverter Asynchronous Neighbour bypass STS fail EPO Inverter Fault Bypass STS Fail DSP software error Inverter Over tempertaure PARALLELING Rectifier Flash Update Inverter relay fail Parallel Comm Fail Inverter Flash Update Inverter over current Monitor Flash Update Inverter Setting ENP 10 20kVA Parallelable UPS System lt 6 Guide Specifications Version 1 0 2 3 7 Communication Ports The UPS shall have input and output volt free contacts to provide the following interfaces Summary Alarm Battery Bypass Remote EPO Bypass Backfeed See Section 2 4 for a description of the required optional equipment 2 3 8 Software Compatibility The UPS shall have optional software available for mon
16. ircuit breaker operation in the distribution system The UPS shall be protected against sudden changes in output load and short circuits at the output terminals The UPS shall have built in protection against permanent damage to itself and the connected load for all predictable types of malfunctions Fast acting current limiting devices shall be used to protect against cascading failure of solid state devices Internal UPS malfunctions shall cause the module to trip off line with minimum damage to the module and provide maximum information to maintenance personnel regarding the reason for tripping off line The load shall be automatically transferred to the bypass line uninterrupted should the connected critical load exceed the capacity of the available on line modules The status of protective devices shall be indicated on a graphic display screen on the front of the unit 2 3 STANDARD COMPONENTS 2 3 1 Rectifier The term rectifier shall denote the solid state equipment and controls necessary to convert AC to regulated DC for input to the inverter The rectifier shall be of DSP Digital Signal Processor controlled design and utilize insulated gate bipolar transistors IGBTs A Input Current Total Harmonic Distortion Less than 5 at full rated UPS output load and less than 10 at half load B Power factor correction The rectifier also performs a PFC function input power factor shall be a minimum 0 99 at 100 load and 0 98 at 50 load
17. itoring control and event management The available solutions shall provide Users with basic UPS operating status plus automated shutdown of a computers Operating System in the event of an extended power outage cost efficient centralized monitoring and event management of UPS Environmental and Power systems that can utilize an existing network infrastructure 2 3 9 LBS Load Bus Synchronizer The objective of the Load Bus Synchronizer LBS is to keep the output of two independent UPS systems either two independent single units OR two independent parallel systems each composed of up to four modules in both topologies with and without Main Static Switch in synchronization even when the two systems are operating on different modes bypass inverter or on batteries It is usually used with Static Transfer Switches to achieve Dual Bus Power Supply configuration LBS shall be able to synchronize systems of same type and brand each system composed of same type and brand paralleled UPS s with TWO completely different sources of incoming power to UPS systems With optional LBS adapter it shall be possible to synchronize systems of different type and brand each system composed of same type and brand paralleled UPS s with TWO completely different sources of incoming power to UPS systems ENP y E Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 2 4 OPTIONS 2 4 1 Optional Communications A SNMP HTTP Network Inter
18. lock B Discharging The battery converter will supply power to the inverter when the rectifier is shut down or in joint mode and also the rectifier is current limiting 2 3 3 Inverter The term inverter shall denote the equipment and controls to convert DC from the rectifier or battery converter to provide AC power to the load The inverter shall be solid state capable of providing the rated output power The inverter shall be of Vector Controlled design and utilize insulated gate bipolar transistors IGBTs switching at high frequency in order to minimize output voltage distortion A Overload Capability e Less than 105 of UPS rated output continuous operation e 105 125 of UPS rated output load for 5 minutes then shift to bypass output e 125 150 of UPS rated output load for 1 minute then shift to bypass output The UPS will achieve the overload mentioned above lt 30 C operating temperature nominal input voltage and when the battery is in a full charged condition e Greater than 150 of UPS rated output with load for 200 millisecond then shift to bypass The UPS will achieve the overload mentioned above with 380 400 415V nominal input and output voltage and when the battery is fully charged ENP 12 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 B Output Frequency The inverter shall track the bypass mains supply continuously providing the bypass source remains within the limits for the rated fre
19. nal and control port Level 4 2kV 5kHz based on B DC Power port Level 3 2kV 5kHz based on B EN 61000 4 5 AC Power port Level 3 2kV Line to Line Level 4 4kV Line to Earth Signal and control port Level 2 1kV based on B cables length exceeds 30m EN 61000 4 6 AC Power port Level 3 based on B Signal and control port Level 3 based on B EN 61000 4 8 Level 4 30A m based on A ENP Bu Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 1 5 UPS DIMENSION The UPS dimension shall be housed in 500mm x 860mm x 1240mm w x d x h free standing enclosure for the UPS range of 10kVA 20kVA 1 6 UPS DELIVERY SUBMITTALS The specified UPS shall be supplied with one 1 user manual to include details of A Functional description of the equipment with block diagrams B Detailed installation drawings including all terminal locations for power and control connections for both the UPS and battery system C Safety precautions D Step by step operating procedures E General maintenance guidelines The UPS shall be supplied with a record of pre shipment final factory test report 1 7 WARRANTY 1 7 1 UPS Warranty The UPS manufacturer shall warrant the unit against defects in workmanship and materials for 12 months after initial start up date 1 7 2 Battery Warranty The battery manufacturer s standard warranty shall be passed through to the end user 1 8 QUALITY ASSURANCE 1 8 1 Manufacturer Qualific
20. operate simultaneously in a parallel configuration with the load shared equally between the connected modules A Non redundant system all the modules making up the UPS system shall supply the full rated load If a module should malfunction the load has to be transferred automatically and uninterrupted to the bypass line by the use of the static mains bypass switch B Redundant system the UPS system shall have one or more module s than required to supply the full rated load The malfunction of one of the modules shall cause that module to be disconnected from the critical load and the remaining module s shall continue to carry the load Upon repair of the module it shall be reconnected to the critical load to resume redundant operation Any module shall also be capable of being taken off the critical load manually for maintenance without disturbing the critical load bus Module redundancy level shall be a predefined number of modules that are required to supply the full rated load With the number of connected modules equal to this value a malfunction of another module shall cause the load to be transferred automatically and uninterrupted to the bypass line by the use of the static mains bypass switch 2 2 3 System Protection The UPS shall have built in protection against surges sags and over current from the AC rectifier input source over voltage and voltage surges from output terminals of paralleled sources and load switching and c
21. quency of either 50 or 60Hz The inverter will change its frequency at 0 1Hz per second to maintain synchronous operation with the bypass This shall allow make before break transfers of the load between the inverter and the bypass mains supply If the bypass mains supply frequency falls outside of these limits the inverter shall revert to an internal digital oscillator that maintains the inverter output frequency to within 0 25 of nominal frequency in single module mode C Phase to Phase Balance System logic shall provide individual phase voltage compensation to obtain phase balance of 1 under 100 balanced load condition and 1 5 under 100 unbalanced load D Fault Sensing and Isolation Fault sensing shall be provided to isolate a malfunctioning inverter from the critical load bus to prevent disturbance of the critical load voltage beyond the specified limits The inverter output static switch shall be switched off to isolate a malfunctioning module from the critical load E Battery Protection The inverter shall be provided with monitoring and control circuits to protect the battery system from damage due to excessive discharge Shutdown of the inverter shall be initiated when the battery has reached the end of discharge EOD voltage The battery EOD voltage shall be calculated and automatically adjusted increased for reduced load conditions to allow for extended autonomy periods without damage to the battery 2 3 4 Static Bypass
22. r to easily navigate through operator screens B Metered Values An MCU or DSP shall control the display functions of the monitoring system All three phase parameters shall be displayed simultaneously All voltage and current parameters shall be monitored using true RMS measurements for accurate 2 representation of non sinusoidal waveforms typical of computers and other sensitive loads The following parameters shall be displayed e Main input Line to Neutral Voltage Line to Neutral Ampere Input Frequency Line to Line Voltage Power Factor e Bypass input Line to Neutral Voltage Bypass Frequency Line to Line Voltage e UPS output Line to Neutral Voltage Bypass Frequency Line to Line Voltage e Local load Apparent Power Active Power Reactive Power e System Apparent Power Active Power Reactive Power e Battery Battery bus voltage Battery current Battery temperature Battery runtime remaining Battery capacity Battery Boost Charging Battery Float Charging Battery is not connected ENP 14 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 e Event Current alarm e Records Historical alarm e Language Language selection e Settings Display contrast Date format set Date amp time Comm1 baud rate Comm2 baud rate Comm3 baud rate Communication address Single Group Battery Capacity Battery blocks Number Equalize Charge Allowed
23. sesseccaeseeseecseeeeeeees 9 1 7 2 Factory Testing iia n 9 2 1 FABRICATION eiii ed dde E EtA 10 2A A Materials ini Ae vi 10 QAG2 WANE weve taba AN 10 2 3 Consttucton 4 ive acdeg gil BAN ici A 10 ZN A COONM ii envied tee ieee Aue A ee hii aie 10 2 2 EQUIPMENT E E tn es ages ev tudes ev ange ee benedees anies 10 2 21 UASD 10 2 2 2 CONSUL RE ae 11 2 2 3 System Protection eii lolita E ici 11 2 3 STANDARD COMPONENTS earita ei aen a i aiaa Aai iE a 11 2 3 1 Rectifi ea ten ia air AEE E eSa 11 2 3 2 Battery CONVE sanii ds hiner tiers titi AEEA oi SEEE E EE NEEE iets 12 23 3 Verter RR 12 2 34 Static By Pasito E A VEER EA Ane datos VEE E A E SE a 13 2 3 5 Internal Maimtenance ByYpasSSi ies nenei a aR ak a rons Eua eE RENETTE Eo TO S 14 2 3 6 Man Machine Interface MMI cuco Aida dci AE EREE E EE DEE eds 14 2 3 7 Communication Ports ses eirioes atures E NEE Rae o Ee E A VOEE E oe NEEESE ene fe 17 2 3 8 S ftWwa re Compa bility siniseen ads do iii litio S SE 17 2 3 9 LBS Load Bus Synchronizer ici deta E E dia A E dai A de 17 LA OPTIONS iii AE E R 18 24 1 Optional Communications nereis ii e Serrie e Svs praia 18 242 Battery E E E R E AS E iras liar 18 2 4 4 Battery Compartment nsss erena a a E EE E a AR 18 2 4 5 External battery temperature Sensors senesine aeeie e EEEE a SEESE RN E 18 ENP Ve Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 GENERAL 1 1 SUMMARY These specifications describe requirements
24. ter is synchronous with the bypass the static transfer switch shall perform a transfer of the load from the inverter to the bypass source with no interruption in power to the critical AC load If the inverter is asynchronous with the bypass the static switch will perform a transfer of the load from the inverter to the bypass with interruption in power to critical AC load This interruption must be less than 15ms in 50Hz or less than 13 33ms in ENP 4 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 60Hz The static bypass shall be able to support continuously less 105 of rated UPS capacity Maintenance Each UPS has an internal maintenance bypass external maintenance bypass is an external maintenance bypass which can be installed in the Maintenance Bypass Cabinet MCB If the UPS needs to be maintained or repaired after the inverter is turned off and the load is transferred to bypass the internal maintenance bypass or external maintenance bypass can be turned on and the UPS can be shut down and the battery can be disconnected for maintenance purposes Parallel For higher capacity or higher reliability the UPS outputs 3ph 4w can be directly paralleled together parallel controllers in every UPS automatically share the load The largest parallel capacity is up to four times the nominal load of each unit composing the system ENP Si Guide Specifications 10 20kVA Parallelable UPS System Version 1 0 1 3 3 Perform
25. tment can housed 4 string of 32 blocks of 9Ah Battery 2 4 5 External battery temperature sensor To ensure temperature compensated charging to protect battery life a battery temperature monitoring probe is necessary to monitor the battery enclosure temperature rise caused by the AC mains power loss and of the battery s internal resistance when operating The probe system includes one battery temperature sensor and one temperature transport ENP 18 Guide Specifications 10 20kVA Parallelable UPS System Version 1 0
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