Manuel d'utilisation / d'entretien du produit 9335 du fabricant Powerware
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Uninterruptible Power Supply 80 kVA and 120 kVA Installation and Operation Manual 164201396 Rev. A 9 335.
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Powerware 9335 (80 kVA and 120 kVA) Installation and Operation ii 164201396 REV. A 071103 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains i mportant instruct ions for your Uninterruptible Power Supply (UPS) system.
iii Powerware 9335 (80 kVA and 120 kVA) Installation and Operati on 164201396 REV. A 071103 A Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii Basic System Conf igurations . . . . . . . . . . . . . . . . .
Powerware 9335 (80 kVA and 120 kVA) Installation and Operation iv 164201396 REV. A 071103 Section II Operation 5 Understanding UPS Operation 5.1 Looking Inside the UPS System . . . . . . . . . . . . . . . . . 5 - 1 5.2 Normal, Battery and Bypass Modes .
v Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV. A 071103 7.3.7 UPS Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 8 7.3.8 Set-Up User . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powerware 9335 (80 kVA and 120 kVA) Installation and Operation vi 164201396 REV. A 071103 Figure 1 – 1 Powerware 9335 (80 kV A and 120 kVA) UPS Ca binet Figure 4 – 1 Typical Remote EPO Control Fig.
vii Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV. A 071103 Table 4 – 1 Remote EPO W ire Terminations Table 4 – 2 Remote EP O Table 10 – 1 Communication Port Pin A.
Powerware 9335 (80 kVA and 120 kVA) Installation and Operation viii 164201396 REV. A 071103 Powerware 9335 U PS true double conversion online power protection can be utilized to prevent loss of valuab.
ix Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV. A 071103 Basic System Configurations These basic UPS system configuration s are possible: • Single C abinet UPS with .
Powerware 9335 (80 kVA and 120 kVA) Installation and Operation x 164201396 REV. A 071103 Secti on II – O perati on • Chapter 5 – Underst andin g UPS Operati on – provides information on understanding how your UPS works.
xi Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV. A 071103 Safety Considerations The UPS cabinet is desig ned for industrial or compu ter room applications, and contain safety shields behind the doors.
Section I Installation.
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Powerware 9335 (80 kVA and 120 kV A) Installation and Operation 1-1 164201396 REV A 071103 1.1 Installing the UPS The complete UPS cabinet is shipped on a s ingle pallet.
1-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operati on 164201396 REV A 071103 1.1.2 Preparing Your Site For your UPS to operate at peak efficiency, your installation site should meet the environmental parameters outlined in this manual.
Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 1-3 164201396 REV A 071103 1.1.5 Inspecting and Unpacking Each Cabinet The first task in preparing for installation is inspecting and unpacking the UPS.
1-4 Powerware 9335 (80 kVA and 120 kVA) Installation and Operati on 164201396 REV A 071103 1. Carefully inspect the outer packaging for eviden ce of damage during transit. 2. Use a forklift or other material handling equipment to move the cabine t to a convenient unpacking area.
Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 2-1 164201396 REV A 071103 2.1 Preliminary Installa tion Information Refer t o the followin g while inst alling t he UPS syst em: • Refer to Append ix A of this manual for installation drawings and additional install ation no tes.
2-2 Powerware 9335 (80 kVA and 12 0 kVA) Installation and Operation 164201396 REV A 071 103 2.2 UPS Cabinet In stallation To install an UPS cabinet, perform the procedures in the following paragraphs.
Powerware 9335 (80 kVA and 120 kV A) Installation and Operation 2-3 164201396 REV A 071103 2.2.2 Installing External Battery Power Wiring The Powerware 9335 contains no internal ba tteries and must there fore be use d with an external battery system. The procedure for wiring the battery s ystem to the 9335 is described as follows.
2-4 Powerware 9335 (80 kVA and 12 0 kVA) Installation and Operation 164201396 REV A 071 103 4. If the installation is for a si ngle utility fe ed with common rect ifier and bypass input, proceed to step 7. For a separate bypass and rec tifier input, proceed to step 5.
Powerware 9335 (80 kVA and 120 kV A) Installation and Operation 2-5 164201396 REV A 071103 2. Remove Customer Interface conduit landing plate from the UPS cabin et.
2-6 Powerware 9335 (80 kVA and 12 0 kVA) Installation and Operation 164201396 REV A 071 103 completed Installation C hecklist to be su re you have completed all applicable equipment installation. NOTE: The Installation Checklist MUST be completed prior to starting the UPS system for the first time.
Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 3-1 164201396 REV A 071103 3.1 Importan t Safety In structio ns The Powerware 9335 UPS does not contain batteries. It mu st, however, be used with a properly configured batte ry cabinet or rack with a p roperly sized battery system for proper operatio n.
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Powerware 9335 (80 kVA and 120 kV A) Installation and Operation 4-1 164201396 REV A 071103 4.1 Installation Procedures Figure 4–1. Typical Remote EPO Control 4.2 To Install a Remote EPO: NOTE: Before installing a Remote EPO, be sure you have prepared the UPS according to the instructions in Ch apter 2.
4-2 Powerware 9335 (80 kVA and 120 k VA) Installation and Operation 164201396 REV A 071103 Table 4 – 1. Remote EPO Wire Terminations From Remote EPO Switch(s) To X1 connector on front of inner UPS panel Remarks X1 - 1 Refer to sw itch manufacturers installat ion instructions X1 - 2 Twisted wires (2) 14- 18 gauge Table 4 – 2.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 164201396 REV. A 071103 Section II Operation.
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Powerware 9335 (80 kVA and120 kV A) Installation and Operation 5-1 164201396 REV. A 071103 5.1 Looking Inside the UPS System The Powerware 9335 is a continuous duty, s olid-state, transformerless (at 480 VAC ) three phase, true online system that provides con ditioned and uninterruptible AC pow er to the UPS systems output.
5-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 B a ttery C har ger Rectifi er EMI F ilt er EMI F ilt er I nput F i l t er Boos t er C ont ac t o r K4 C ontac.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 5-3 164201396 REV. A 071103 5.2 Normal, Battery and Bypass Modes The UPS system func tions automatically to supply AC electrical powe r to the critical load. There are four s tandard operation mo des.
5-4 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 5.2.1 Normal Mode Figure 5–2 shows the pa th of electrical power throug h the UPS system when the UPS is operating in No rmal mode.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 5-5 164201396 REV. A 071103 The DC boost converter derives power from the un regulated DC rectifier and produce s a higher, stable DC voltage and cu rrent source for the inverter.
5-6 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 5.2.2 Bypass Mode The UPS automatically s witches to Bypass mode i f it detects an overload, load fault, or internal failure. The bypass source supplies the commercial AC power to the load directly.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 5-7 164201396 REV. A 071103 contactor and together are wired to enable the inverter and rectifier to be b ypassed when this path is activ e. The static switch , as an electronically contro lled device, can be turn ed on immediately to pick up the load from the inverter.
5-8 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 5.2.3 Battery Mode The UPS transfers to ba ttery mode automaticall y if a utility power outage occurs, or if the utility power does not c onform to specified par am eters.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 5-9 164201396 REV. A 071103 While in battery mode, the UPS will enunciate an audible horn, indica te the status change on the front pane l display with the message “MAINS NOT OK”, and make an entry into the alarm event history.
5-10 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 5.2.4 Maintenance Bypass Mode An internal maintenanc e switch (IA1) is used to safely supply utility pow er to the syste m output during periods of maintenan ce or repairs.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 5-11 164201396 REV. A 071103 5.3 Functional Description The UPS is an online doub le-conversion unit with a series power train . An uncontrolled rectifier feeds a boost co nverter, which in turn powers the inverter .
5-12 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 or constant v oltage mode (temperature compensated, available as an op tion) based on battery condition. All batteries use d in conjunction w ith the Pow erware 9335 ar e external to the UPS cabinet.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 6-1 164201396 REV. A 071103 6.1 General The UPS s ystem should function automatically an d require very little attention during normal operation. The c ontrols and indicators identified in this section are used during startup to monitor normal opera tion and during a bnormal events.
6-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 6.2 UPS Operational Controls The UPS has many s tandard features that provide cost effective and consistently reliable power prot ection . 6.2.1 Control Panel The Control Pa nel on the front of the UPS, pictured in Fig.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 6-3 164201396 REV. A 071103 6.2.3 Maintenance Bypass Switch An internal Maintenanc e Bypass Switch is prov ided to completely isolate the main p ower processing of the UPS during service.
6-4 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 6.4 Options and Accessories Contact your sales representative for information about any of these availab le options: 6.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 6-5 164201396 REV. A 071103 6.5 Safety Considerations The UPS en closure is designe d for industrial or compu ter room applications and contains safety shields. Howeve r, the system is sophisticated a nd should be handl ed with appropriate care, following these guidelines.
6-6 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 6.6 Symbols, Controls, and Indicators These symbols ma y appear on your UPS syst e m or on labels inside the UPS.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 7-1 164201396 REV. A 071103 7.1 Description This chapter describes the UPS Control Panel, inclu ding controls and indica tors, and how to monitor UPS operation. The control panel is located on the front of the UPS (see Figure 7–1).
7-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 7.2 Using the Control Panel The Control Pa nel provides an operator in terface with the UPS sys tem.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 7-3 164201396 REV. A 071103 INDICATOR INDICATOR STATUS MEANING ALARM OFF RED + BUZZER RED No alarm condition Alarm condition Alarm condit.
7-4 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 If, for security or emergency reasons , it is neces sary to immediately disconnec t the load from the UPS, press the two red ON/OFF pushb uttons simultaneously.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 7-5 164201396 REV. A 071103 7.3.2 LCD Display Structure and Navigation The menu s tructure is show n in Figure 7 –3, below.
7-6 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 7.3.3 Main Menu Screen DESCRIPTION LCD DISPLAY • Logging Control .
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 7-7 164201396 REV. A 071103 • Battery Vol tage • Battery Charger Current • Discharge Current • Rectifier Voltage (all three phase.
7-8 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 7.3.7 UPS Data DESCRIPTION LCD DISPLAY • Information displayed is installed at the time of man ufacture. • Manufacturing Date • EPROM Version • Actual Date and Time (s et by user under user set-up menu.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 7-9 164201396 REV. A 071103 7.3.9 Set-Up Service DESCRIPTION LCD DISPLAY • This menu i s reserved for au thorized service engineers. It is not to be accessed by End-Users. • Type in password.
7-10 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 7.4 O perating Modes 7.4.1 “ON LINE” Mode (INVERTER MODE) The ON-LINE Mode is the UPS Operating Mode i n which the load is supplied through the RECTIFIER and INVERTER .
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 7-11 164201396 REV. A 071103 inverter within 5 millisec onds. When utilit y power returns, the UPS will startup in NORMAL (inverter) mode. Operator interventio n is required to reset to ECO mode .
7-12 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 7.4.4 Parallel Isolator (IA2) The UPS unit is provided with an ou tput isolator sw itch (IA2) which, when opened, isolates the corresponding unit from the LOAD .
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 8-1 164201396 REV. A 071103 8.1 Operation The following procedures provide instru ction for operating the UPS system. Refer to Chapters 6 and 7 of this manual for a description o f the UPS controls and monitor p anel functions.
8-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 LED Indicator Color LINE 1 Green LINE 2 Green BYPASS Green INVERTER OFF BATTERY Flashing Green 6. If necessary, perform Command: L OAD TO INVERTER (se e sections 7.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 8-3 164201396 REV. A 071103 12. R otate the Maintenance Bypass Switch IA1 to the “O” (OFF) position. On the LCD Display, “MANUAL BYP. OPEN” will appear followed by “LOAD NOT PROTECTED”.
8-4 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 2. If the loads are all dis connected, press simultaneou sly the two ON/OFF buttons on the UPS control panel.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 8-5 164201396 REV. A 071103 • Rotate the Maintenance Bypass Switch IA1 to “I” (ON) On LCD Display: “MANUAL BYP CLOSED” w ill ap.
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Powerware 9335 (80 kVA and120 kV A) Installation and Operation 9-1 164201396 REV. A 071103 9.1 Alarms In the e vent of an alarm conditi on, the red LED-Indicator “Alarm” and the audible alarm will turn on. In this case proceed as follows: A. Silence the audible alarm b y pressing the "Reset" button.
9-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 9.3 Fault Identification and Correction The major alarm conditions that w ill be encountered are sh own in the.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 10-1 164201396 REV. A 071103 10.1 X – Slot Communication Module s This section describes the several types o f X–Slot cards, whic h can be used with the Powerware 9335. X-Slo t cards allow the UPS to communicate to a variety of environments and with different types o f devices.
10-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 Figure 10–1. X–Slot Location on Front of Powerware 9335 UPS Cabinet 10.2 Single-Port Serial Card To establish communications between the UPS and a computer, connect your computer to the UPS communication port using the supplied communication cable.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 10-3 164201396 REV. A 071103 power environment. If a power e mergency occurs, the software initia tes the saving of all data and an orderly shutdo wn of the connected c ritical load. The cable pins are iden tified in Figure 10–2 and the pin functions are des cribed in Table 10–1.
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Powerware 9335 (80 kVA and120 kV A) Installation and Operation 11-1 164201396 REV. A 071103 11.1 Gener ator ON Facility The generator ON facility mus t use a normally o pen contact that close s to indicate that a generator is running and supp lying input power to the UPS.
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Powerware 9335 (80 kVA and120 kV A) Installation and Operation 12-1 164201396 REV. A 071103 12.1 Gener al The components inside the UPS cabinet are sec ured to a stur dy metal fra me. All repairable parts and assemblie s are located for eas y removal, and very little disassembly.
12-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 12.3 Performing Preventive Maintenance The UPS system requires ver y little prevent iv e maintenance. However, the system should be ins pected periodically to v erity that the u nits are op erating normally and th at the batteries a re in good condition.
Powerware 9335 (80 kVA and120 kV A) Installation and Operation 13-1 164201396 REV. A 071103 13.1 Sys tem Informa tion The UPS systems are housed in frees tanding cabinets with safety s hields behind the front panels. The UPS systems are available in 50 or 60 Hz configurations with eithe r 80 or 120 kVA output ra tings.
13-2 Powerware 9335 (80 kVA and 120 kVA) Installation and Operation 164201396 REV A 071103 13.3 UPS System Output DC Ripple less than 1% voltage ripple UPS Output Capacity 100% rated current at 0.
Powerware 9335 (80 kVA and 120 kV A) Installation and Operation A-1 164201396 REV A 07/11/2003 A The information in t his appendix will help you plan for and install your UPS system.
Table A. INPUT/OUTPUT Ratings & External Wiring Requirements for Powerware 9335 – 80 kVA Ratings Units Rating 50/60 Hz kVA W 80 Basic unit ratings at 0.8 lagging PF load INPUT/ OUTPUT VOLTAGE 480 Amps* 105 AC INPUT AC Input to UPS Rectifier (0.95 min.
Table B. INPUT/OUTPUT Ratings & External Wiring Requirements for Powerware 9335 – 120 kVA Ratings Units Rating 50/60 Hz kVA kW 120 96 Basic unit ratings at 0.8 lagging PF load INPUT/OUTPUT VOLTAGE 480 Amps* 150 AC INPUT AC Input to UPS Rectifier (0.
7. Terminals are UL rated at 90 o C. Refer to Table C for power cable terminations and Table D for conduit requirements. Figure A–1 shows the location of power cable terminals inside the UPS.
11. External overcurrent protection is not pr ovided by this product, but is required by codes. Refer to A and B for wiring requirements. If an output lockable disconnect is required, it is to be supplied by designated personnel. 12. Table E lists the maximum rating for input circuit breakers.
Table G. Customer Inte rface Inputs and Outputs Terminal Name Description X1 Emergency Power Off X1 – 1 and X1 – 2 (no polarity) X2 Generator On X2 – 1 and X2 – 2 (no polarity) X3 Battery temp.
Table H. Definition of pin connections on JD 2 (25 pin DB-25P/F) Pin Contact Signal Function 1 Mains failure 2 ALARM MNS Mains present 3 Common 4 Load on inverter 5 Message LD-INV 6 Common 7 Battery l.
Table I. Definition of pins on JD1 a nd interface cable connections to 9 or 25 pin connectors. 5 . . . 9 3 2 1 5 9 . . . 1 2 3 JD1 connector at UPS DB-9 connector to computer . . . . 7 . . . 25 3 2 1 5 9 . . . 1 2 3 JD1 connector at UPS DB-25 connector to computer 1.
Table J. Equipment Weight Weight Kg (lbs.) Powerware Model Shipping Installed Point Loading 9335 – 80 kVA 360 (792) 333 (733) 4 at 83 (183) 9335 – 120 kVA 367 (807) 340 (748) 4 at 85 (187) 5. The clearances required around the UPS system are shown in Table K.
External Battery Powerware 9335 80 kVA and 120 kVA Front View showing customer connections Control Panel X2 X3 X4 X1 SW1-1 SW2-9 JD8 JD2 JD1 IA1 IA2 2N - N + 3N 1A 1B 3C 3B 3A 2C 2B 2A 1N 1C Output (T.
Powerware 9335 (80 kVA and 120 kV A) Installation and Operation A-11 164201396 REV A 07/11/2003 Figure A–2. Powerwa re 9335 80 kVA and 120 kVA Label IA1 Maint enance Bypass F3a,b F18a,b,c F19a,b,c F.
STANDARD VERSION (DUAL INPUT FEE D CONNECTION) SHOWN 0 kVA) Installation and Operation 164201396 REV A 07/11/2003 Figure A–4. Power Terminals on Powerware 9335 Fuse C Fuse D Cable C D B C A K4 Maintenance Bypass IA1 Rectifier Inverter IA2 Static Switch F1 9335 Cable D Cable B Fuse B Cable A Fuse A Load Figure A–3.
H G F E D C B A Checked b y : R ep l ac e : Date : Date : S i gna tu re : S i gna tu re : S i gna tu re : Modificatio n Modificatio n S 0 6- 0001U LA Date : Sh ee t : 1 of : 5 H G F E D C B A 1 234 5 .
1 2345 67 8 9 1 0 H G F E D C B A Ch ec k e d b y : Repl ac e : Dat e: Dat e: S ignature : S ignature : S ignature : Mo di fica ti on Mo di fica ti on S0 6 -0 0 0 1 U L A Dat e: S he et : 5 of : 5 H G.
700 mm. (27.6 inches) 1 800 mm. ( 7 0 . 9 in c h es) Removable Conduit Landing Plate Figure A–7. UPS Cabinet Dimensions (Rear View) Powerware 9335 (80 kVA and 120 kVA) Installation and Operation A-1.
750 mm. (29.6 inches) 700 mm. (27.6 inches) 1800 mm. (70.9 Figure A–8. UPS Cabinet Dimensions A-16 Powerware 9335 (80 kVA and 12 0 kVA) Installation and Operation 164201396 REV A 07/11/2003.
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LIMITED FACTORY W ARRANTY FOR TH R EE-PHASE POWERWARE PRO DUCTS Subject to the conditions herein, Invensys Powerware (Powerware ® ) warrants solely, to the original end-user, the electronics (the “.
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Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Powerware 9335 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Powerware 9335 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Powerware 9335, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Powerware 9335 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Powerware 9335, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Powerware 9335.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Powerware 9335. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Powerware 9335 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
