Liebert® NETWORK POWER SWITCH 2™
Contents
1. 5 6 5 1 6 External Power Supply realization for 230V AC shunt trip colls 5 7 5 1 7 External Power Supply realization for low voltage AC shunt trip colls 5 8 5 1 8 External Power Supply realization for DC shunt trip colls 5 9 breaker select onc har ae GG 5 10 er eain FY EN YF 5 11 08 10 Page i User Manual Network Power Switch 2 This manual describes the following equipment EQUIPMENT PART NUMBER 7 3kVA 230V 32A 2 Pole Network Power Switch SSWITCH2 32A Support Information If you require assistance for any reason please have the following information available sm REN foie O I HI 08 10 Page ii User Manual Chapter 1 General Description Network Power Switch 2 1 Chapter 1 General description 1 1 Introduction The Network Power Switch NPS is an automatic static transfer switch designed to provide fast automatic transfers between two independent synchronous asynchronous AC power sources to provide continuity of AC power to critical equipment such as information technology equipment One of the two AC inputs is designated as the preferred sour2. For installing the NPS in standard 19 Rack remove the Nuts used for Safety Clamps as shown in the figure 3 1 After keeping the NPS cabinet inside the rack fix the cabinet with Safety Clamps intact using same screws 08 10 Page 3 3 User Manual Chapter 1 General Description Network Power Switch 2 Fig 3 1 NPS Installation 3 3 Connecting cables to Network Power Switch WARNING BEFORE CABLING UP THE NETWORK POWER SWITCH ENSURE THAT YOU ARE AWARE OF THE LOCATION AND OPERATION OF THE EXTERNAL ISOLATORS THAT CONNECT THE NETWORK POWER SWITCH INPUT SUPPLY TO THE MAINS DISTRIBUTION PANEL CHECK THAT THESE SUPPLIES ARE ELECTRICALLY ISOLATED AND POST ANY NECESSARY WARNING SIGNS TO PREVENT THEIR INADVERTENT OPERATION HIGH LEAKAGE CURRENT EARTH CONNECTION ESSENTIAL BEFORE CONNECTING SUPPLY 3 3 Cable entry Cables enter the Network Power Switch cabinet from the rear side as shown in figure 3 2 The cables are terminated on the connectors and fuses M16 x 1 5 Source 1 M25 x 1 5 A LO Signal amp coil drive Output Source 2 Fig 3 2 Cable Entry 08 10 Page 3 4 User Manual Chapter 1 General Description Network Power Switch 2 3 3 2 Cable Rating Following are the recommended cable size for 7 3kV A Network Power Switch Table 3 1 Description Max Current rating Amp PVC cable Max Cable mm Input Cables 32 3G6 3G10 Output Cables 32 3G6 3G10 Signalization amp coil
3. 10 User Manual Network Power Switch 2 ENGLISH This manual describes installation and operation procedures for the Network Power Switch 2 All relevant parts of the manual should be read prior to commencing installation If you encounter any problems with the procedures contained in this manual you should seek Immedlate assistance from the Liebert Sales Office from whom the equipment was purchased Alternatively contact the Liebert s Customer Service amp Support department at the address shown below EMERSON NETWORK POWER S r l HQ Customer Service and Support Department Via Leonardo da Vinci 16 18 35028 Piove di Sacco PD Italy Help Desk Telephone 39 049 9719233 Fax 439 049 9719053 mailto serviceUPS LiebertEMEA emerson com While every precaution has been taken to ensure accuracy and completeness in this manual Liebert Corporation assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions This document and the contents herein are confidential and the sole property of Emerson Reproduction distribution or unathorized use of this document or any parts within this document are forbidden without the written consent of Emerson Liebert Corporation pursues a policy of continual product development and reserves the right to change the equipment design without notice Copyright 2010 by Liebert Corporation Unauthorized reproduction prohibite
4. Select the priority to sourcel Close the fuse FSI 2 Checkfor the LED S1 healthy S1 priority S1 feed and LED load on sourcel to glow 3 Close the fuse FS2 4 Check for the LED S2 healthy to glow 5 Using priority switch transfer the load to source2 check this transfer does not affect the load 6 Transfer the load to source 1 again and check this transfer does not affect the load 2 4 Switching the Load to Manual Bypass condition Bypass on S1 SOURCE _ _ P 9p Yellow LED Load on S2 SEE n RF 9 ON Bypass on 52 SOURCE Load connected to this bypass Fig 2 2 Switching to Bypass WARNING This operation should be performed by Trained personnel only SWITCH YELLOW LED ON POSITION ONLY 1 Byseeing the LED indication check which source is feeding 2 Unlock the Bypass switch lock by the using the key provided 3 Rotate the Manual Bypass switch in the direction of the source feeding the load as per the warning given on the mimic 4 Relock the Bypass switch remove the key and keep it in original place 08 10 Page 2 2 User Manual Chapter 1 General Description Network Power Switch 2 2 5 Procedure for switching the Network Power Switch from Manual Bypass condition to Normal Operation Unlock the Bypass switch using the key provided 2 Rotate the bypass switch knob to the Static switch output position i e horizontal position 3 Lock the Bypass
5. Y WN WR 3 1 a CL Gl GG LU omo 3 2 929 3 2 busua t kuu uuu u E HN ee oe 3 3 3 4 Removal and a pupu uu u u uuu uuu GU 3 3 3 4 1 Removal Ol HOLS wap umts Ga dy a FA LG Sce EDU 3 3 992 JPixine Ol HO Wap urit a hen 3 4 d Chiper eu 4 1 4 1 Contormits and 6 u uc u u uuu anuales iba eae ino echo 4 4 2 General SpecIbiC atio TIS hole etie Ee boten 4 4 3 Environmental specia ONS ie tote debo boim eiu ba ue dobsta bebo bain debo bein Robo b nia 4 4 4 lec pie Do mmm 4 2 4 5 Mechanical spec Hea ONS TEE OT 4 2 3 Mastall aon Drawings yau a 5 1 Power Diasram Controller PCB aa 5 2 S12 uPowerCicut Diacrann RE snubber u 5 3 3413 external power cable connections 5 4 SJ 4 sOyerall seneral arranse us doe odes 5 5 5 1 5 Connection of the external isolators utilizing users external power supply
6. architecture that 35028 Piove di Sacco PD ITALY responds to changes in criticality density and Tel 39 049 9719 111 capacity Enterprises benefit from greater IT Fax 39 049 5841 257 system availability operational flexibility and marketing emea emersonnetworkpower com reduced capital equipment and operating costs Emerson Network Power Service EMEA Via Leonardo Da Vinci 16 18 Zona Industriale Tognana 35028 Piove di Sacco PD ITALY Tel 39 049 9719 111 Fax 39 049 9719 045 service emea emersonnetworkpower com United States 1050 Dearborn Drive P O Box 29186 Columbus OH 43229 While every precaution has been taken to ensure the accuracy and completeness of this literature Liebert Corporation assumes Tel 1 614 8880246 no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions Asia 2010 Liebert Corporation All rights reserved throughout the world Specifications subject to Dah Sing Financial Centre change without notice 108 Gloucester Road Wanchai Liebert is a registered trademark of Liebert Corporation Hong Kong All names referred to are trademarks Tel 4852 2572220 or registered trademarks of their respective owners Fax 4852 28029250 Manual reference 63900660 REV 4 08 2010 Emerson Network Power The global leader in enabling Business Critical Continuity AC Power Embedded Computing Outside Plant Racks
7. drive 2 10 x 0 25 T Recommended cable size for Input amp Output terminals CTS10U is 1 5 to 10 mm _ Higher dimension limited by cable gland capability Note e Jt is recommended to use cables with suitable lugs to avoid any short circuit between terminals e These recommendations are for guideline purposes only and may be superseded by local regulations and codes of practices Source 1 ZA Source 2 Output Signalization amp coll drive Fig 3 3 External cable routing 3 3 3 Cable connections Following are the set of external power cables which are connected to the Network Power Switch equipment Input source Line 1 Input source 2 Line 2 Input source Neutral 1 Input source 2 Neutral 2 Output Line Output Neutral Earthing PE External shunt trip coil drive contacts Source state signalization Source Healthy These cables are connected to the terminals on rear side of the equipment as shown in fig 3 4 08 10 Page 3 1 User Manual Chapter 1 General Description Network Power Switch 2 C cm 5 5 cc oo Ae x oo Input Fuse 1 q P Ke CD ODE Li manas s Fig 3 4 External Power Cables 3 3 4 Safety earth The safety earth terminal is provided on the rear side of eguipment The safety earth cable of the inputs and the output must be connected to this terminal WARNI
8. not operational e Blown Fuse One or both of the input fuses are blown Before replacing with the fuse s of the prescribed type it is recommended to check if there is no short circuit present on the output If the failure condition is repeated even after verifying there is no short circuit present at the output it is necessary to contact the service e Backfeed failure Faulty condition when the unit isolated the source connected to faulty internal switch to resolve the error it is necessary to contact the service The controlled isolation of the source due this reason is indicated also via the status of BF dry contacts Optional for CB 2 2 General Notes NOTE All users controls and indicators mentioned in these procedures are identified in chapterl ALS d MEE EIU m m UD G gt SSUSUCS5S529200300 FEDD Input F 24225 65m nput Fuse 1 To exem RL m m Fig 2 1 Power Connection details for Network Power Switch 08 10 Page 2 1 User Manual Chapter 1 General Description Network Power Switch 2 2 3 Procedure for Switching the Network Power Switch to power the load from a Power Off condition This procedure should be followed when turning on the Network Power Switch from a fully powered down condition i e When the load is not being initially supplied at all It is assumed that the installation is complete the authorized personnel have commissioned the system 1
9. 0 Page 5 2 User Manual Network Power Switch 5 1 2 Power Circuit Diagram RC Snubber PCB 4120 53 54 CN1 1 A I abt L f Cr 4 O GND NO C1 1UF 630V RL1 SCR1 SCR2 NO C2 O 1UF 630v RL2 4120 bb 56 CN2 1 A L 4 f Cd O GND 111 100 CX13 Lee 412 58 57 2 L CN3 GND R1 R3 22 OHMS 1WR3 OUS 22 OHMS 1WR3 MOV1 MOV3 MOV4 R2 R4 22 OHMS 1W MOV5 22 OHMS 1W passa LIMIT OF THE BACKFEED amp OPEN SCR DETECTION BOARD 115 08 10 Chapter 5 Installation Drawing 1UF 630V SCR3 MOV6 N2 gt Ben 1UF 630V Page 5 3 User Manual Chapter 5 Installation Drawing Network Power Switch 5 1 3 External power cable connections DW D UJ ur Ete Bb GU Input Fuse 1 i mi Lum Gonna HAS LT reson isa Rear View EXTERNAL POWER CABLE CONNECTION NETWORK POWER SWITCH 08 10 Page 5 4 User Manual Chapter 5 Installation Drawing Network Power Switch 5 1 4 Overall general arrangement 08 10 Page 5 5 User Manual Chapter 5 Installation Drawing Network Power Switch 5 1 5 Connection of the external isolators utilizing users external power supply DEFAULT CONNECTION OF THE EXTERNAL ISOLATORS TRIP COILS SUPPLIED BY CUSTOMER S EXTERNAL POWER SUPPLY X1
10. 08 10 Page 1 1 User Manual Chapter 1 General Description Network Power Switch 2 1 2 Design Concept CX20 3 CX20 1 4 e TM o0 E u HE Ta Sto 04 50ASWITCH FUSE 2 2 A 9 0 SOURCE 1 IN 50A SWITCH FUSE 2 Gd 12 BOT c TOP 29 o 1 m for Pera 03 a o lt Es CO X20 CX20 5 io SOURCE 2 SUPPRESSION BOAR REFER DWG REFER DWG 103025758 198V 220V AC 50Hz 60Hz 198V 220V AC 50Hz 60Hz vp 5 Tos SOURCE 1 INPUT CN7 SOURCE 2 INPUT CN2 T GATE CATHODE CONTROL WRES EU E FOR S C R MODULE TA CN1 CN3 CN13 CN12 3 T GATE CATHODE CONTROL WIRES FOR S C R MODULE TB CN6 CN4 CN14 CN15 OUTPUT CURRENT SIGNAL CN11 LED INDICATIONS CN5 PRIORITY SWITCH CN8 POTENTIAL FREE CONTACTS OF STATUS RELAYS BACKFEED amp OPEN SCR DETECTION NOTE X1 X2 X3 X4 X5 amp X6 ARE SNAP FIT CONNECTORS REFER DWG 03025756 NOTE OPEN SCR DETECTION ENABLED FOR SYNCHRONOUS SOURCES ONLY MAINTENENCE BYPASS LOAD PCB EE EXT COIL 1 1 lt EXT COW 1 2 13 ZN NETWORK POWER SWITCH CONTROL PCB100220012001 EXT COIL 2 1 2 2 4 5 EXT COIL 2 2 is 015 016 017 018 019 020 021 022 Fig 1 2 Power Circuit Diagram for Network Power Switch Figure 1 2 shows the Power circuit diagram for Network Power Switch Source 1 amp Source 2 are the two sy
11. 3 EXT X14 EXT COLI 1 SHUNT TRIP COIL 1 X11 EXT COIL22 lC SOURCE 1 BACK FEED OPEN SCR DETECTION EXTERNAL POWER SUPPLY X12 EXT COIL2 1 1 SHUNT TRIP COIL 2 Bm Source 2 C2 es a Y s s ERR J The shunt trip coil voltage has to be available when any of the source inputs of NPS is available For recommended coil supply realisation see figures below For 230V AC shunt trip coils connection see 5 1 6 For low voltage AC shunt trip coils see 5 1 7 For DC shunt trip coils see 5 1 8 For circuit breaker rating see section 5 1 9 08 10 Page 5 6 User Manual Network Power Switch 5 1 6 External Power Supply realization for 230VAC shunt trip coils L1 L2 N1 w er qmm 112 COIL 1 11 E BEEN luo EXT x COIL 1 2 972 5 EXT 22 Li s ME 2 N 2 EXT N1 COIL 2 2 2 Bo 2 NH NPS EXTERNAL POWER SUPPLY SHUNT TRIP COILS HAVE TO BE FOR 230 VAC SHUNT TRIPS FUSED EXTERNALLY VIA 2A FUSE OR CIRCUIT BREAKER 08 10 Chapter 5 Installation Drawing Page 5 7 User Manual Chapter 5 Installation Drawing Network Power Switch 5 1 7 X External Power Supply realization for low voltage AC shunt trip coils L1 L2 1 QF2 EXT COIL 2 1 EXTERNAL POWER SUPPLY SHUNT TRIP COILS HAVE TO BE FOR LOW VOLTAGE AC COI
12. LS FUSED EXTERNALLY VIA 2A FUSE OR CIRCUIT BREAKER 08 10 Page 5 8 User Manual Chapter 5 Installation Drawing Network Power Switch 5 1 5 External Power Supply realization for DC shunt trip coils L1 L2 N1 N2 9 ex EN T I ESSE 2 P COIL 1 1 REM uM 1f EXT 7 COIL 1 2 HOP nation NE EXT COIL2 1 2 Rey EXT COIL 2 2 2 jl NPS EXTERNAL POWER SUPPLY SHUNT TRIP COILS HAVE TO BE FOR DC SHUNT TRIP COILS FUSED EXTERNALLY VIA 2A FUS DIODES IN SERIES OF PARALLEL OR CIRCUIT BREAKER POWER RAILS SHALL BE CONNECTED TO PREVENT EQUALIZING CURRENT 08 10 Page 5 9 User Manual Chapter 5 Installation Drawing Network Power Switch 5 1 9 Circuit breaker selection chart Resistive load Light inductive load Heavy inductive load PRODUCT Protection Solid Neutral Solid Neutral Solid Neutral SSWITCH2 25A Circuit Breaker 1pole 32A char B 2pole 32A char B 1pole 32A char C 2pole 32A 1pole 32A char D 2pole 32A char D SSWITCH2 32A Circuit Breaker 1pole 40A 2pole 40A char B 1pole 40A char C 2pole 40A char C 1pole 40A char D 2pole 40A char D 08 10 Page 5 10 User Manual Network Power Switch LIMITED WARRANTY Liebert Corporation extends the following LIMITED WARRANTY to the purchaser and to its customer collectively referred to as the Purchaser the enclosed Power Protection System Liebert NPS and co
13. NG FAILURE TO FOLLOW ADEOUATE EARTHING PROCEDURES CAN RESULT IN ELECTRIC SHOCK HAZARD TO PERSONNEL OR THE RISK OF FIRE SHOULD AN EARTH FAULT OCCUR 3 3 5 Protective devices For safety reasons it is necessary to install external to the Network Power Switch system circuit breaking protective devices in the input a c supply and towards the output Given that every installation has its own characteristics this chapter provides general useful information for qualified installation engineers with knowledge of operating practices of regulatory standards and of the equipment to be installed Rectifier and Bypass input supply of the Network Power Switch The input to Network Power Switch should be given through a 32A 2 Pole ELCB for safe operation Protection against excessive over currents and short circuits in the mains supply input These inputs must be protected installing suitable protective devices at the distribution panel of the incoming main supply considering that the protection should discriminate with overload capacity of the system The protective devices must be selected for the nominal input current with respect to the rating and the input a c supply voltage as given in table 3 1 Protection against earth faults RCD or RCCB devices In the event of a differential RCD device being installed upstream of the input supply one must take into account the transient and steady state earth leakage currents that are produced du
14. Switch remove the key and keep it in original place 3 Chapter 3 Installation Procedure 3 1 Introduction WARNING Do not apply electrical power to the Network Power Switch equipment before the arrival of the commissioning engineer See installation instructions before connecting to the supply WARNING The Network Power Switch equipment should be installed by a qualified engineer in accordance with the information contained in this chapter and the drawing package shipped inside UPS cabinet This chapter contains information regarding the positioning and cabling of the Network Power Switch Because every site has its peculiarities it is not the aim of this chapter to provide step by step installation instructions but to act as a guide to the general procedures and practices that should be observed by the installing engineer 3 2 Equipment positioning and environmental considerations The Network Power Switch cabinets are designed to fit in standard 19 inch rack In case of non availability it can be kept on floor or as a tabletop item with sufficient ground clearance Network Power Switch should be located in a cool dry clean environment with adequate ventilation to keep the ambient temperature within the specified operating range WARNING The Network Power Switch cabinet is connected with live voltages hence it should be located at safe place To ensure efficient cooling 1U free space above the unit is necessary
15. amp Integrated Cabinets Connectivity E Embedded Power Power Switching amp Controls Services DC Power E Monitoring Precision Cool ing Surge Protection
16. ce to which the Network Power Switch will connect the load as long as the designated input source is within the acceptable limits The Network Power Switch is designed to transfer the output load to the alternate input source as long as the alternate source is within the acceptable voltage limits and the preferred source is not The Network Power Switch provides fast break before make transfers to prevent interconnection of the two sources even under faulted source conditions The maximum sense and transfer times are within the tolerance of IEEE Standard 446 susceptibility curve for information technology equipment to allow uninterrupted load equipment operation In case of overload Network Power Switch gives the alarm Under Short circuit condition a fast acting semi conductor fuse protects condition of the load The Network Power Switch is 2 pole switch to prevent objectionable currents in the earth due to separate grounding systems for the two sources Manual Bypass Switch The entire power static switch module is hot swappable Before removing this module the load is transferred without break to any one of the source directly by using the Manual bypass switch After replacing the static switch module the load is restored on static switch module using the Manual bypass switch Block Diagram AN BYP SW BACKFEED amp OPEN SCR DETECTION EXTERNAL TRIP COILS Fig 1 1 Block Diagram of Network Power Switch
17. ch to transfer load from static switch to direct source 1 or source 2 Isolated neutrals Backfeed Protection and Open SCR Detection 4 3 Environmental specifications ENVIRONMENTAL CHARACTERISTICS DESCRIPTION Heat dissipation 100 Storage temp range 40 to 60 Operating temp range 0 to 25 C Relative humidity 0 to 95 Operating altitude Up to 1500m 5 000 ft Storage Transport Altitude Up to 12000m 40 000 ft Audible Noise lt 45 db at 1 5 m 1 For synchronous sources only 08 10 Page 4 1 User Manual 4 4 Electrical Specifications ELECTRICAL CHARACTERISTICS Chapter 4 Specifications Network Power Switch 2 DESCRIPTION Nominal Input Voltage 220 230 or 240 volts singe phase 3W G 50 Hz Solidly grounded power sources Nominal Output current 32 Frequency 50 60 Source unhealthy status Guaranteed Transfer to alternate source within 15 of Vnominal Load Power factor range 0 5 to unity leading or lagging Load Crest factor Up to 3 5 In Phase transfer window Adjustable from 5 1 Source voltage distortion up to 10 THD Overload capability 125 of continuous current for 10 minutes 100046 for two cycles minimum Over current Protection By semi conductor fuse Short circuit withstand capability Up to 20 000 symmetrical amps protected by internal fusing Redundant Control Po
18. d All rights reserved 08 10 Page i User Manual Network Power Switch 2 Table of Contents 1 1 1 1 IO GN Hd 1 1 1 2 Deuwn Concept caa ID GN O Y Y 1 1 1 3 Mechanical Desi Om uu L u u Cau unc bcr 1 2 1 4 Mimic Indican on votos feck meen GR aaa EN DAN 1 3 1 5 Manual Bypass wich Opera OM ea NN OEN O 1 4 1 6 Potential mc on cu taa ua AD YE DR 1 5 2 Chapter 2 Operating 2 1 2 1 introduc ton ee Ea 2 1 2 2 2 1 2 2 Procedure for Switching the Network Power Switch to power the load from a Power Off condition 2 2 2 4 Switching the Load to Manual Bypass condltion 2 2 2 5 Procedure for switching the Network Power Switch from Manual Bypass condition to Normal Operation 2 3 a Chapter Installation Procedure b e y m dan OO 3 3 3 9 3 3 3 2 Equipment positioning and environmental considerations 3 3 3 3 Connecting cables to Network 3 4 3 3 1 3 4 SS CODI AMO cc 3 3 5 3 UOTIS FER FE Y YNN FN FNAN HE eee Cabot tue att at eese NR A
19. d through source 2 Overload Overload has occurred i e current level crossed 110 of full load Unsynchronized The sources are out of phase synchronized window Load on S1 Source 1 is feeding the load Load on S2 Source 2 is feeding the load 08 10 Page 1 3 User Manual Chapter 1 General Description Network Power Switch 2 1 5 Manual Bypass Switch Operation Load feed through source 1 BYPASS Load feed through NPS OUTPUT Load feed through source 2 BYPASS Fig 1 5 Manual Bypass Switch Operation Manual Bypass switch is used only when a fault occurs in the Network Power Switch and the control circuitry of the Network Power Switch is to be checked To perform this operation the load is connected to the bypass For Normal Operation the position of the switch should be at Network Power Switch output position 1 e horizontal If the load is to be fed through the source 1 Bypass first it is to be unlocked and the knob should be rotated upwards To feed through source 2 bypass the knob is to be rotated downward A mechanical interlocking arrangement is provided on this Bypass switch by which the Hot swappable unit can be removed only when load is connected to bypass In normal operation when the load is connected to Network Power Switch the Hot swappable unit cannot be removed Operating Network Power Switch in Bypass mode e Unlock the Manual Bypass Switch with the key provided e Depending upon the available h
20. ealthy source i e either Source 1 or Source 2 select it by changing the Manual Bypass Switch position Because of the make before break operations of the switch it is necessary to select the bypass line on the source which was feeding the output of the NPS previously otherwise the unsynchronized sources will be shorted resulting in fuse s blow e Unlock the sliding module 08 10 Page 1 4 User Manual Chapter 1 General Description Network Power Switch 2 e Pull out the Hot swappable sliding module out of the Network Power Switch which contains SCR assembly and control circuitry Operating Network Power Switch in Normal Mode load connected to Network Power Switch output e Insert the Hot swappable module into the Network Power Switch unit e Lock the sliding module for preventing its accidental opening e Unlock the Manual Bypass Switch with the key provided e Connect the Load output to Network Power Switch by changing the switch position to Network Power Switch output e Depending on the priority switch Load will get transferred to source 1 if the priority switch is on sourcel e Static Switch output position LED will glow 1 6 Potential free contacts The Network Power Switch status can be checked on the connectors located on the rear end as shown in figure 1 6 Two potential free contacts indicating Source 1 and Source 2 Healthy conditions are taken from controller board and terminated at rear terminal connectors a
21. g 20 3 CX20 1 114 e Kos a UR PETS ee d E E o Jj X63 X63 Hr 3 e OQ o Polo L2 03 o a lt E EMI FILTERPCB 03025757 SOURCE 1 198V 220V AC 50Hz 60Hz OUTPUT 50 SWITCH FUSE X20 CX20 5 dod REFER DWG 03025755 REFER DWG 103025758 SOURCE 2 198V 220V AC 50Hz 60Hz EMI SUPPRESSION BOAR pe m Lw gt 92 RC SNUBBER au is SOURCE 1 INPUT CN7 r ALE GATE CATHODE CONTROL WRES A ct FOR S C R MODULE TA CN1 CN3 CN13 CN12 GATE CATHODE CONTROL WIRES FOR S C R MODULE TB CN6 CN4 CN14 CN15 OUTPUT CURRENT SIGNAL CN11 LED INDICATIONS CN5 PRIORITY SWITCH CN8 POTENTIAL FREE CONTACTS OF STATUS RELAYS TP10 12V a 1 PRIORITY mu Lo 1010 2 PRIORITY S gt ne m LD11 UNSYNC RE ERE PRIORITY SWITCH SW2 TP14 GND BACKFEED amp OPEN SCR DETECTION NOTE X1 X2 X3 X4 X5 amp X6 ARE SNAP FIT CONNECTORS 03025756 NOTE OPEN SCR DETECTION ENABLED FOR SYNCHRONOUS SOURCES ONLY REFER DWG MAINTENENCE BYPASS LOAD PCB EXT COIL 1 1 Q m me EXT COIL 1 2 D U2a3 49 EXT COIL 2 1 x NETWORK POWER SWITCH CONTROL PCB 100220012001 CN12 CN13 CN14 CN15 uf L EXT COIL 2 2 23 015 016 017 018 019 020 021 022 08 1
22. ircuitry is located inside the Hotswap unit Hotswap unit is connected to the main body by a pair of telescopic slides on left and right side and power connector at rear end This Hotswap unit is easily removable by pulling out the handle which is located in the front Since it is dangerous to pull out the Hotswap unit when NPS is connected to load an interlocking arrangement is provided 3 4 1 Removal of Hotswap unit Following is procedure for safe removal of Hotswap unit Transfer the load to healthy Bypass by using Maintenance Bypass switch Refer section 2 4 page 2 2 for details 2 Remove the Safety clamps Refer section 3 2 on page 3 1 for details 3 Pull out the Hotswap unit using the handle located in front The movement will get restricted at certain distance which ensures that the Hotswap unit does not fall down in open condition 4 A small plastic lever is located inside both telescopic slides Press the left lever downwards and right lever upwards as shown in fig 3 3 This will unlock the slide and Hotswap unit can be pulled out completely 08 10 Page 3 3 User Manual Chapter 1 General Description Network Power Switch 2 Fig 3 5 Removal of Hotswap unit 3 42 Fixing of Hotswap unit After ensuring the Hotswap unit is in good ready to use condition it has to be fitted back into the Network Power Switch Following is procedure for fixing back the Hotswap unit to NPS 1 Align the Hotswap unit by locating tele
23. m AC Power For Business Critical C ontinuity Liebert NETWORK POWER SWITCH 2 Installation Manual 7 3 KVA 230V 32A 2 Pole EE EMERSON Be arorik Poner Liebert NPS EMERSON Network Power 8 EMERSON Dear Customer Please accept our thanks for giving us the privilege to serve you by choosing a Liebert make product If this is your first Liebert product we hope it is the beginning of a long relationship which delivers value to your organisation If you already own and use a Liebert product we are doubly honoured by your decision of continuing this relationship It is our constant endeavour to partner you for the growth and success of your business This philosophy is reflected in our Mission statement To deliver value through Air amp Power Ouality solutions to achieve customer delight Please do give us feedback to help us realize our Mission Emerson Network Power User Manual Network Power Switch 2 Information for the protection of the environment Unit servicing this unit makes use of components dangerous for the environment electronic cards electronic component The components removed must be taken to specialized collection and disposal centers 2 Unit dismantling in case of unit dismantling this operation shall be carried out by specialized personnel The unit must be taken to centers specialized in collection and disposal of dangerous substances 08
24. mponents are free from defects in materials and workmanship under normal use service and maintenance FOR A PERIOD OF TWO YEARS FROM THE DATE OF ORIGINAL PURCHASE from Liebert or the Liebert dealer or retailer THE FOREGOING WARRANTY IS THE ONLY WARRANTY GIVEN AND NO OTHER WARANTY IS PROVIDED EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Certain aspects of disclaimers are not applicable to consumer products acquired by individuals and used for personal family or household purposes as distinguished from industrial or other purposes Local laws may not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you This warranty gives you specific legal rights and you may have other rights which vary according to local law Certain repairs or services are the responsibility of the Purchaser and the Purchaser is expected to pay for them This warranty does not extend either to products with removed or altered serial numbers or to any losses or damages due to act of God or source external to the product misuse accident abuse neglect negligence unauthorized modification alteration or repair use beyond rated capacity or improper installation maintenance application or use including without limitation use in a manner contrary to the accompanying instructions or applicable codes If the Liebert NPS fails to conform with the above warranty within the t
25. nchronized unsynchronized power sources with fuse switches FS1 amp FS2 amp pair of SCR s TAI amp TBI in series with each path amp TA2 and TB2 in the neutral path Logic dictates that at any time only one pair of back to back connected SCR s in the line and neutral should conduct This routes the input power to the output load Should the load feeding source fail due to any reason the other source takes over automatically in less than 6 ms in case of synchronized sources and in less then 16 ms in case of unsynchronized sources The change over is always with break which ensures that in no case two sources get paralleled Priority source can be selected through front panel switch The live mimic on front panel indicates which source is on priority amp which is feeding the load Figure 1 4 shows the details of live mimic panel 08 10 Page 1 1 User Manual Chapter 1 General Description Network Power Switch 2 1 3 Mechanical Design Description Fixed unit Hotswap unit Manual Bypass Switch Telescopic Slides Fig 1 3 Hotswap and Fixed Unit The Network Power Switch consists of two modules The fixed unit consists of the input and output connections and manual bypass transfer control switch The second module is hot swappable plug in type with removable electronics amp static switching module The Manual Bypass switch is located on the right side of the cabinet with a key lock to restrict access to qualified o
26. r designated operators The Hotswap contains locked latches to prevent unauthorized removal of the module The Network Power Switch is designed to allow replacement of the removable electronics switching module without having to de energize the load equipment The Entire power static switch module is detachable Before removing this module the load is transferred without break to any one of the source directly After replacing the static switch module the load is again transferred back to Network Power Switch without break Refer to section 3 4 for safe removal and fixing of Hotswap unit on page 3 5 08 10 Page 1 2 User Manual Chapter 1 General Description Network Power Switch 2 1 4 Mimic Indications 51 Healthy 51 Priority S1 Feeding Load on S1 Priority Selection Overload Switch Load on S2 Uns ynchronised transfer 52 Healthy 52 Priority 52 Feeding Fig 1 4 Mimic and LED Indications LED INDICATION Mimic indications Ten LED s are mounted on the mimic plate Glowing LED s indicate the status of the Network Power Switch S Healthy Source 1 is a healthy source and is well above the 10 under voltage setting S2 Healthy Source 2 is a healthy source and is well above the 10 under voltage setting S1 Priority The priority selector switch is on S1 priority position S2 Priority The priority selector switch is on S2 priority position S Feeding The load is fed through source 1 S2 Feeding The load is fe
27. ring start up of the Network Power Switch The presence of an RFI suppression filter inside the Network Power Switch determines a residual earth current not greater than 3 5mA Residual current circuit breakers RCCB RCD must be sensitive to d c unidirectional pulses class A in the network and insensitive to transient current pulses Thy are identified by the symbols respectively ONY END 08 10 Page 3 2 User Manual Chapter 1 General Description Network Power Switch 2 These isolators must have an average sensitivity possibly adjustable between 10mA and 0 3A further more the intervention of the RCD s have to be delayed of 90 ms Output to the System In the event that an external distribution panel is used for load distribution the selection of protective device must provide discrimination with those that are used at the input to the Network Power Switch module 3 3 6 Cabling Procedure The external power cables should be connected to the terminals as shown in fig 3 2 Proper termination labels are provided near each connector for ease of cabling 3 4 Removal and Fixing of Hotswap unit WARNING Hotswap unit should be opened by trained person only as it is connected to live load This equipment receives power from more than one source Disconnect output and all input sourcesn of power from this equipment before servicing NPS is designed for quick and easy maintenance serviceability The SCRs and control c
28. s shown in figure 1 6 These two voltage free contacts are Normally Open NO and their rating is 2A 120Vac 24Vdc Neutral 2 Neutral 1 Line 1 BF Line 1 Line 2 Line Grounding BF Line 2 Input Fuse 1 o Jo c o o c o o o o olcklkdobpblo F LL OPT T RR BEER HED 50 04 1111111111111 W IL o 4 I ll OD x s I I I mi Fig 1 6 Potential free contacts Connectors Way of using the Potential Free Contacts PFC Source Healthy Signals b Parallel C Series The potential free contacts can be used in the above drawn way 08 10 Page 1 5 User Manual Chapter 1 General Description Network Power Switch 2 Optional 1NO INC Auxiliary contact block stackable to siemens circuit breaker Auxilliary Backfeed indication contact 13 21 22 14 Note a eme line shows PFC inside NPS b The numbers indicated in the boxes are wire numbers coming to PFC terminals 2 Chapter 2 Operating Instructions 2 1 Introduction The Network Power Switch can be considered to be in one of the three operating conditions e Normal Operation All relevant power switches and fuses closed and the Load is connected to Network Power Switch output e Manual Bypass The load is connected to the input supply directly e Shut down All power switches are off and load is
29. scopic slide on Hotswap unit with telescopic slide on main body 2 Press the Hotswap unit into the NPS body ensuring the proper mating of telescopic slides 3 Push the Hotswap unit sufficiently to make firm contact with the rear power connector S1 S2 Priority LED will glow immediately followed with S1 amp S2 healthy LEDs as per availability 4 Transfer the Load to Network Power Switch output from bypass condition Refer section 2 5 page 2 2 for details 5 Hitthe Safety clamps back to its location and fix the NPS cabinet to Rack if rack mounted 08 10 Page 3 4 User Manual Chapter 4 Specifications Network Power Switch 2 4 Chapter 4 Specifications 4 1 Conformity and Standards This equipment complies with the following requirements Normative references Safety EN 62310 1 EMC EN62310 2 The equipment must be installed in accordance with these instructions and used only with accessories approved by the manufacturer to maintain conformity with the standards 4 2 General Specifications Manual and Automatic Transfers Sense and transfer time less than 6 milliseconds Break Before make switching Selectable preferred source Selectable auto manual retransfer In phase transfer window adjustable from 5 1 Convection cooling Hot swappable electronic static switching module Live mimic on Hot swappable unit for indicating load supply status amp alarms Make before break manual bypass swit
30. wer supplies Taken from available source 1 and source 2 Integral Maintenance Bypass Make before break operation Alarm contacts Two Potential Free Contacts available at the rear Transfer time 6 millisecond for synchronized transfer and 16 millisecond for unsynchronized transfer Relay 2A 250VAC Dry contact fusing externally 2A fuse or circuit breaker 4 5 Mechanical specifications MECHANICAL CHARACTERISTICS DESCRIPTION Height 88 0 Width Depth 431 0 457 0 492 0 if cable gland mounted Weight 8 0 Colour Structure Black Installation 19 Rack Mounted table top Cable entry Rear side Ingress Protection 08 10 IP20 Page 4 2 User Manual Network Power Switch Installation Drawings 5 1 1 Power Circuit Diagram Controller PCB 5 1 2 Power Circuit Diagram RC Snubber PCB 5 1 3 External Power cable connections 5 1 4 Overall general arrangement 5 1 5 Connection of the external isolators utilizing users external power supply 5 1 6 External Power Supply realization for 230V AC shunt trip coils 5 1 7 External Power Supply realization for low voltage AC shunt trip coils 5 1 8 External Power Supply realization for DC shunt trip coils 5 1 9 Circuit breaker selection chart 08 10 Page 5 1 User Manual Chapter 5 Installation Drawing Network Power Switch 511 Power Circuit Diagram Controller PCB
31. wo year warranty period Liebert will repair or replace the system at Liebert s option Repairs or replacements are warranted for the remainder of the original warranty period To make a warranty claim the Purchaser should call a Liebert s representative to obtain a Returned Goods Authorization number and shipping instructions Return transportation costs to Liebert are the responsibility of the Purchaser LIFE SUPPORT POLICY This product is not recommended and the Company will not knowingly sell this product for use with life support and other designated critical devices ANY SUCH USE BY A USER AUTOMATICALLY VOIDS AND DISCLAIMS ANY AND ALL WARRANTIES INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE AND EXPRESS WARRANTIES THAT THIS PRODUCT WILL CONFORM TO ANY AFFIRMATION OR PROMISE FOR THIS PRODUCT AND THE USER AGREES THAT IN NO EVENT SHALL THE COMPANY BE LIABLE FOR CONSEQUENTIAL OR INDIRECT DAMAGES Ensuring The High Availability Of Mission Critical Data And Applications Emerson Network Power the global leader in enabling business critical continuity ensures network resiliency and adaptability through a family of technologies including Liebert power and cooling technologies that protect and support business critical systems Liebert Locations Emerson Network Power Headquarters EMEA Via Leonardo Da Vinci 16 18 Zona Industriale Tognana solutions employ an adaptive
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