Eaton 91PS User And Installation Manual

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E E a a t t o o n n 9 9 1 1 P P S S / / 9 9 3 3 P P S S U U P P S S

Eaton 91PS/93PS UPS

8-10 kW

User's and installation

guide

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Summary of Contents for Eaton 91PS

Page 1 E E a a t t o o n n 9 9 1 1 P P S S / / 9 9 3 3 P P S S U U P P S S Eaton 91PS/93PS UPS 8-10 kW User’s and installation...
Page 2 (even extracts) without the written approval of Eaton Corporation. Every care has been taken to ensure the accuracy of the information contained in this manual, but no liability can be accepted for any errors or omission. The right to make design modifications is reserved.
Page 3 Introduction to Eaton 91PS/93PS 8-10 kW UPS ........
Page 4 5.3 91PS/93PS 8-10 kW UPS Single feed installation........
Page 5 Index ............. .89 EATON 91PS/93PS UPS USER’S AND INSTALLATION...
Page 6 These symbols indicate a hazardous situation or action. Symbols are used to warn of situations, which can cause environmental damage and personal injury. General warning sign Explosion and fire hazard Battery hazard EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 7 These symbols are used in warnings and notifications to indicate an action that must be taken. The mandatory action symbols are shown below. Wear eye protection General symbol for mandatory action EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 8 1 1 . . 4 4 G G l l o o s s s s a a r r y y The following acronyms are used in Eaton documentation to refer to Eaton UPS products or their parts. Table 1. Glossary of acronyms...
Page 9 Intelligent Power Protector Maintenance Bypass Switch Maintenance Isolation Switch Module Output Breaker Silicon-Controlled Rectifier Uninterruptible Power Module Uninterruptible Power Supply VRLA Valve Regulated Lead Acid (battery) EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 10 93ps DANGER Operations inside the UPS must be performed by an authorized Eaton Field Service Engineer or by other qualified service personnel authorized by Eaton. There are no user-serviceable parts inside the UPS. The UPS operates with mains, battery or bypass power. It contains components that carry high currents and voltage.
Page 11 Do not install or operate the UPS system close to gas or electric heat sources. Keep the operating environment within the parameters stated in this document. 1 1 1 1 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 12 RoHS Directive 2011/65/EU Declarations of conformity with UPS harmonized standards and directives EN 62040-1 (Safety), EN 62040-2 (EMC) and EN 63000 (RoHS) are available at www.eaton.eu or by contacting your nearest Eaton office or authorized partner. 2 2 . . 4 4...
Page 13 Indicates that a risk of electric shock is present and the associated warning should be observed. CAUTION: REFER TO OPERATOR'S MANUAL Refer to your operator's manual for additional information, such as important operating and maintenance instructions. 1 1 3 3 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 14 • a question about any of the information in this manual • a question that this manual does not answer 1 1 4 4 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 15 Startup and operational checks must be performed by an authorized Eaton Field Service Engineer NOTE: or by other qualified service personnel authorized by Eaton, or the terms specified in the Warranty (see General information about warranty) become void. This service is offered as part of the sales contract 10.1...
Page 16 Each UPS is able to operate and share the load independently, despite the status of the other UPSs. The 91PS/93PS UPS 10 kW frame includes rectifier, inverter, battery converter, controls and 10 kW static bypass. In addition to the internal batteries, external batteries can also be connected.
Page 17 Path of current through the UPS in the double conversion mode shows the path of electrical power through the UPS system when the UPS is operating in the double conversion mode. 1 1 7 7 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 18 However, if internal redundancy between the UPMs is not possible due to high load, the UPS switches automatically to the bypass mode and remains in that mode until the failure is corrected and the 1 1 8 8 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 19 Typical transition time to the double conversion mode is less than 2 milliseconds, which is practically seamless. 1 1 9 9 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 20 UPS rectifier, the backfeed protection contactor K5 also opens. The opening of K1 and K5 prevent system voltages from bleeding backwards and re-entering the input source through the static switch or rectifier. 2 2 0 0 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 21 UPS system when operating in the bypass mode. Figure 6. Path of current through the UPS in the bypass mode Static switch Bypass input Main power flow Rectifier Rectifier input Energized 2 2 1 1 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 22 • Maintenance ByPass (MBP) Alternatively, MBS solutions are also available in an external enclosure as accessory items. Figure 7. UPS wiring diagram including MBS 2 2 2 2 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 23 P P o o w w e e r r w w a a r r e e H H o o t t S S y y n n c c The Eaton Powerware Hot Sync technology is an algorithm that eliminates the single point of failure in a parallel system and therefore enhances system reliability.
Page 24 O O p p t t i i o o n n s s a a n n d d a a c c c c e e s s s s o o r r i i e e s s Contact your Eaton sales representative for more information about the available options and accessories.
Page 25 The Eaton 91PS/93PS 8-10 kW UPS are equipped with internal batteries to provide full load runtime of 5...10 minutes depending on the UPS rating. In addition, a battery sidecar and external battery cabinets can be introduced to the system to allow extended autonomy.
Page 26 Installation checklist. 6. Have authorized service personnel do the preliminary operational checks and startup. Startup and operational checks must be done by an authorized Eaton Field Service Engineer or by NOTE: other qualified service personnel authorized by Eaton, or the terms specified in the Warranty (see Section General information about warranty) become void.
Page 27 (based on ANSI/ISA S-71.04 classifications). If the UPS is used in a more aggressive environment, it can cause reduced product life and possibly early failure. If the installation location does not meet the recommended environment, contact Eaton service representative for further information.
Page 28 The cabinet can be installed in line-up-and-match or standalone configurations. Failure to obey these guidelines may void your warranty. CAUTION Do not stack anything on top of the 91PS/93PS UPS cabinet. CAUTION If the unit is installed in an IT network, the voltage between neutral and protective earth during normal operation must be less than 50 V (AC, RMS), 71 V (AC, peak) or 120 V (DC).
Page 29 No side clearance required if the unit can be pulled out for side access. This requires NOTE: approximately 1.5 m increase to power and signal cable lengths. 2 2 9 9 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 30 Battery locations and enclosures must be ventilated to maintain the hydrogen concentration below the 4% safety limit. Adequate air ventilation must be provided to locations where the UPS and batteries are located. For the 91PS/93PS UPS 8-10 kW with internal batteries, the minimum air flow is 1.5 m /hour and the minimum free area of opening for inlet and outlet is 42 cm when natural ventilation is used.
Page 31 Figure 9. Dimensions of Eaton 91PS/93PS UPS 8-10 kW without and with a side car 4 4 . . 4 4 . . 3 3 U U P P S S s s y y s s t t e e m m p p o o w w e e r r w w i i r r i i n n g g p p r r e e p p a a r r a a t t i i o o n n s s...
Page 32 Bypass input and UPS output, cable [mm Bypass fuse [A] Bypass input and UPS output, PE cable [mm Maximum conductor cross section Solid/stranded wire 50 mm 3 3 2 2 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 33 UPS model Minimum short circuit current, AC Minimum short circuit current, ports [kA] battery port [kA] 91PS 8-10 kW The SCPD are in the external battery cabinets CAUTION Make sure that prospective short-circuit current resulting at the UPS input terminals is equal or less than conditional short-circuit current declared on the type plate (and technical specification) of the UPS.
Page 34 Cable sizing is based on the standard IEC 60364-5-52 table B.52.2 and IEC 60364-5-54 table B.54.2. Sizing is for 70 ºC rated copper cables. When connecting external batteries to 91PS/93PS UPS, Eaton recommends that you use the following circuit breakers:...
Page 35 Maximum Rated current Maximum Rated current Maximum current current current [kW] Table 16. Rated and maximum currents for rated power and voltage (91PS 3:1) Rectifier input UPS output / Battery bypass Rated power Rated voltage Rated current Maximum Rated current...
Page 36 X4: external battery cable + X2: bypass input L1 X4: external battery cable – X2: bypass input L2 TB20, external battery trip X2: bypass input L3 3 3 6 6 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 37 Rated and maximum currents for rated power and voltage (91PS 3:1) and Rated and maximum currents for rated power and voltage (91PS 1:1). The recommended line-to-line load unbalance is 50% or less. Source protection for the AC input to bypass must suit the characteristics of the load and take into account effects such as inrush or starting current.
Page 38 TipNTell and refer to the instructions next to the indicator on the package. The DropNTell indicator is located on the rear panel of the UPS and can be verified after the next step. 3 3 8 8 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 39 5. If the leveling feet are not fully retracted, turn them until they are retracted. 6. Open the UPS front door. 7. Remove the bolts that fasten the shipping brackets to the UPS cabinet and to the pallet. 3 3 9 9 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 40 11. To secure the UPS cabinet in position, lower the leveling feet until the cabinet is not resting on the casters and the cabinet is level. With 91PS/93PS 8-10 kW UPS, reattach the shipping brackets to the UPS cabinet to provide extra support. There are 2 options for positioning the shipping brackets: on both sides of the unit or on the front and rear of the unit.
Page 41 UPS must be made by a locally qualified electrician. The electrical installation procedure is described in the following section. The installation inspection and the initial start-up of the UPS and installing an extra battery cabinet must be carried out by an authorized Eaton Field Service Engineer or by other qualified service personnel authorized by Eaton.
Page 42 1. To gain access to the terminal blocks, remove the screws securing the gland plate at the back of the UPS. 2. If needed, install the additional single feed kit. In 93PS, connect 4 wires. In 91PS, connect 1 wire. For more information, see Section 91PS/93PS 8-10 kW UPS Single feed installation.
Page 43 3. If needed, perform field configuration of 91PS from 3:1 to 1:1. NOTE: Make sure that the jumpers are properly inserted. Mounting the jumpers may require some force. For more information, refer to Section 91PS input system field configuration. 4. Install suitable cable glands into the gland plate.
Page 44 9 9 1 1 P P S S / / 9 9 3 3 P P S S 8 8 - - 1 1 0 0 k k W W U U P P S S S S i i n n g g l l e e f f e e e e d d i i n n s s t t a a l l l l a a t t i i o o n n Additional single feed kits are available for the 93PS (3-phase in / 3-phase out) and 91PS 1:1 (1-phase in / 1-phase out) units.
Page 45 3. Turn the rectifier feeder circuit breaker and rectifier input switch RIS to the ON position. The UPS display will wake up. 4. On the UPS display, navigate to Settings →Configuration. You must sign in with Level 2 password. 4 4 5 5 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 46 In order to avoid damages to the equipment or injuries to personnel, only commissioning personnel are allowed to perform the connection of these batteries. 4 4 6 6 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 47 B B a a t t t t e e r r y y t t r r i i p p w w i i r r i i n n g g The 91PS/93PS 8-10 kW UPS units are always equipped with an internal battery breaker, which affects only the UPS internal batteries (including the battery sidecar).
Page 48 NOTE: Power and control wiring for the additional battery assemblies is supplied with the cabinets. The external battery cabinet can be located freely of the 91PS/93PS UPS cabinet. The wiring goes through the back wall of the UPS cabinet. For instructions on how to install these options, see the instruction manual provided in the package. Earth the external battery cabinet / customer-supplied battery system to the PE terminal 16 shown in Figure UPS power cable terminals for three-phase units.
Page 49 I I n n s s t t a a l l l l i i n n g g i i n n t t e e r r f f a a c c e e c c o o n n n n e e c c t t i i o o n n s s 91PS/93PS UPS contains a total of 5 signal input connectors for operators which can be used for giving remote control commands to the UPS.
Page 50 UPS. Additional relay outputs are available with mini-slot cards. Relay outputs can be configured to be activated by various events. Configuration can be done by an authorized Eaton Field Service Engineer or by other qualified service personnel authorized by Eaton.
Page 51 W W i i r r i i n n g g p p a a r r a a l l l l e e l l 9 9 1 1 P P S S / / 9 9 3 3 P P S S U U P P S S s s y y s s t t e e m m s s The outputs of multiple 91PS/93PS UPS systems can be connected in parallel. Up to 4 units can be paralleled.
Page 52 UPS’s input used for signal input. The N.O. contact is used to disconnect the bypass pull-chain when the MOB is open. Figure Principle of paralleled UPS systems shows the principles of paralleled UPS systems including MOBs and outputs from UPSs. 5 5 2 2 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 53 C C o o n n t t r r o o l l s s i i g g n n a a l l s s o o v v e e r r v v i i e e w w 2 controls signals (External CAN Network, Bypass Pull-Chain) are required for external paralleling. Both of these control signals are fault-tolerant and alarmed when disconnected. 5 5 3 3 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 54 This drawing is for distributed bypass wiring purposes and it is not a floor layout plan. UPSs can be NOTE: placed in any physical order. 5 5 4 4 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 55 Control wiring for features and options should be connected at the user interface terminal blocks located on top front of the UPS, behind the door. 5 5 5 5 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 56 Alarm relay contacts have a maximum current rating of 5 A and a switched voltage rating of 30 VAC (RMS) and 30 VDC. • Alarm relay wiring must be a minimum of 0.75 mm 5 5 6 6 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 57 8. Signal inputs 9. RS-232 port for service See Figure Communication interfaces in the 91PS/93PS UPS 8-10 kW frame for the location of communication interfaces in 91PS/93PS UPS 8–10 kW. Figure 23. Communication interfaces in the 91PS/93PS UPS 8-10 kW frame 1.
Page 58 M M i i n n i i S S l l o o t t c c a a r r d d s s The Eaton 91PS/93PS UPS has 2 MiniSlot communication bays. To install a MiniSlot card, obey the instructions in Section Minislot interface connections.
Page 59 • Industrial Relay Card-MS The MiniSlot Industrial Relay Card provides a way of connecting the 91PS/93PS to industrial and electrical monitoring systems. It also enables a wide range of control applications by allowing up to 250 volts and 8 Amperes through its 5 relay connections. By connecting wires to the corresponding places in its terminal blocks, you can choose Normally Open or Normally Closed setup for each output.
Page 60 C C o o n n f f i i g g u u r r i i n n g g r r e e l l a a y y s s 91PS/93PS offers one native relay output. Additionally, each of the 2 MiniSlots can be equipped with a relay card, including 5 relays.
Page 61 2. In the sign in window, click the password field containing the 4 dots. Figure 28. Sign in window with the password field 3. Enter the password 0101 and press <ENTER>. 4. Select Continue. 6 6 1 1 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 62 Figure 30. Options for relay outputs configuration 7. Enter the code(s) of the function(s) that you want to trigger the relay when they become active. 6 6 2 2 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 63 1. Cable exit opening for up to 12 mm 3. K1 thru K5 terminal connections (½”) conduit for relay contacts to operator's monitoring equipment 2. Signal input connector with voltage supply 6 6 3 3 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 64 Settings > Information. If the UPS need to be operated with another voltage or frequency, contact your closest Eaton office or Eaton authorized partner. The UPS is not a measuring device. All the displayed measurements are approximate values only.
Page 65 When an alarm occurs, first examine these indicators to see what type of event has taken place. • System event messages 6 6 5 5 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 66 M M e e n n u u s s t t r r u u c c t t u u r r e e o o f f t t h h e e 9 9 1 1 P P S S / / 9 9 3 3 P P S S U U P P S S The following table shows the menu structure of the 91PS/93PS UPS.
Page 67 Select signal input name and function or change contact polarity. Relay Outputs Configure the relay outputs. Battery test Change the power level and duration for battery test. 6 6 7 7 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 68 1. Make sure that the UPS input and bypass (if dual feed) feeder circuit breakers are in the ON position. 2. Turn the mains switch RIS and the bypass switch BIS (if installed) to the ON position. 3. Open the UPS front door. 6 6 8 8 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 69 The UPS system is now operating in the bypass mode and the yellow bypass status indicator is lit. The status is shown as UPS On Bypass. 6 6 9 9 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 70 Note that the Energy Saver System mode commands are displayed only if enabled at the factory or NOTE: by an authorized Eaton Field Service Engineer. To transfer the critical load to the Energy Saver System mode: 1. In the home screen, press Controls.
Page 71 8. In the home screen, press Controls. The System controls screen appears. 9. Press the UPS controls button. In the UPS controls screen, the system status is shown as SHUTDOWN. 7 7 1 1 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 72 CAUTION When the EPO switch is activated, all power to the critical load is lost. Use this feature only in case of emergency. 7 7 2 2 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 73 The following instructions are for the EPO switch supplied by Eaton Corporation. If you are using a NOTE: customer-supplied EPO switch, it may not activate in the same way. For operating instructions, see the documentation provided with the switch. To use EPO switch: 1.
Page 74 To turn the UPS back to the double conversion mode: 7 7 4 4 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 75 10. Perform the transfer from the bypass mode to the double conversion mode as described in Section Transferring from the bypass mode to the double conversion mode. 7.4.4 The UPS is now in the double conversion mode. 7 7 5 5 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 76 Figure 37. Normal positions of the switches Bypass input Bypass input switch (BIS) Rectifier input Rectifier input switch (RIS) UPS Output Maintenance bypass (MBP) Maintenance isolation switch (MIS) 7 7 6 6 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 77 UPS system. WARNING All service and maintenance work must be done only by service personnel qualified and authorized by Eaton. CAUTION A warning label, shown in Figure Warning label, must be installed at the UPS...
Page 78 8.3.2 can be done by the user. See the Eaton 91PS/93PS UPS 8–10 kW Service Manual for further information. 8 8 . . 3 3 . . 1 1 D D a a i i l l y y m m a a i i n n t t e e n n a a n n c c e e...
Page 79 M M o o n n t t h h l l y y m m a a i i n n t t e e n n a a n n c c e e Do the following steps once a month: 1. Examine the system parameters on the control panel (see Section Menu structure of the 91PS/ 7.2.4 93PS UPS).
Page 80 M M a a i i n n t t e e n n a a n n c c e e t t r r a a i i n n i i n n g g For more information about training and other services, contact your Eaton representative.
Page 81 A A b b o o u u t t t t e e c c h h n n i i c c a a l l d d a a t t a a For a complete technical specification, contact your Eaton representative. Due to continuous product improvement programs, specifications are subject to change without notice.
Page 82 Input current distortion at rated input cur- rent, iTHD 93PS 8 kW, 10 kW: resistive load <3%, non- linear load <5% 91PS 8 kW, 10 kW: resistive load <4%, non- linear load <6.5% Rectifier ramp-up, rectifier start and load step 4 A/s (default), configurable.
Page 83 (91PS 3:1) and Rated and maximum currents for rated power and voltage (91PS 1:1) Overload capability at ambient 40 °C (in the 102 – 110 % rated power for 10 min double conversion mode) 111 –...
Page 84 (U-I characteristics), ABM or float charge End of discharge voltage 1.67 VPC to 1.75 VPC, configurable or automatic (load adaptive) Charge current Configurable 0... 12.5 A Battery start option 8 8 4 4 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 85 Eaton Field Service Engineer or by other qualified service personnel authorized by Eaton. Service and maintenance of the UPS shall also be performed only by an authorized Eaton Field Service Engineer or by other qualified service personnel authorized by Eaton. Otherwise the warranty will be voided.
Page 86 Our company recommends that the available access control mechanisms be used properly to ensure that access to the system is restricted to legitimate users only. And, such users are 8 8 6 6 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu...
Page 87 Level 1: Control password for User • Level 2: Configure password for User • Level 3: Service password for an authorized Eaton Customer • Service Engineer or qualified service personnel authorized by Eaton Users are recommended to change default passwords on first use of the system.
Page 88 3. NIST SP 800-82 Rev 2, Guide to Industrial Control Systems (ICS) Security, May 2015. https:// ics-cert.us-cert.gov/Standards-and-References 4. National Institute of Technology (NIST) Interagency “Guidelines on Firewalls and Firewall Policy, NIST Special Publication 800-41”, October 2009. http://nvlpubs.nist.gov/nistpubs/Legacy/SP/ nistspecialpublication800-41r1.pdf 8 8 8 8 EATON 91PS/93PS UPS USER’S AND INSTALLATION P-164000672 - 005 2023 www.eaton.eu GUIDE...
Page 89 Signing in............68 Unpack and unload the UPS ......38 UPS controls and indicators Control panel ..........64 Periodic maintenance........79 Menu structure of the 91PS/93PS UPS ..66 System events ..........65 UPS features Advanced Battery Management....23 Recommended security hardening guidelines ...86 Frequency Converter ........24...
Page 90 Energy Saver System mode ......19 Maintenance Bypass Switch......22 Normal operating modes ......17 Stored energy and battery mode....20 UPS system installation 91PS input system field configuration....44 Battery system installation......46 Battery trip wiring.........47 Industrial Relay Card interface connections ...50 Installing a remote EPO switch .....48 Installing additional batteries and battery power cabling ............47...

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