Vertiv Liebert CROSS RACK User Manual
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Vertiv Liebert CROSS RACK User Manual

Vertiv Liebert CROSS RACK User Manual

Complete reliability on-line static switch
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Liebert® CROSS RACK
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Summary of Contents for Vertiv Liebert CROSS RACK

  • Page 1 Liebert® CROSS RACK User Manual...
  • Page 2 Liebert CROSS RACK 2 POLE - LV COMPLETE RELIABILITY ON-LINE STATIC SWITCH User Manual 10H52241UM60 rev. 2...
  • Page 3 The static module (control logic and power electronics) can be extracted completely from the unit, without interrupting the supply to the load, thus reducing maintenance time to a minimum. These and many other features make Liebert CROSS RACK a unique product in its category. YOUR SAFETY CONSTANTLY UNDER CONTROL...

  • Page 4: Declaration Of Conformity

    DECLARATION OF CONFORMITY The manufacturer: VERTIV SRL HEREBY DECLARES THAT THE PRODUCT: Liebert CROSS RACK 2 POLE - LV CONFORMS TO THE INTERNATIONAL STANDARDS LISTED BELOW: IEC EN 62310-1 IEC EN 62310-2 (class C2) IEC EN 60950 Page 2 User Manual - 10H52241UM60 - Rev. 2 - 11/2018...

  • Page 5: Radio Frequency Interference

    In the event of an emergency, the power supply can be cut to all loads simply by turning OFF all the external switches upstream of both Liebert CROSS RACK input sources, and set the Bypass switch QS1, located on the front panel of Liebert CROSS RACK, to position 0 see Fig. 11. LEAKAGE CURRENTS Connect the PE earth cable before any other connection cable.

  • Page 6: Table Of Contents

    CONTENTS 1. RECEIPT AND STORAGE .................... 6 DELIVERY ........................... 6 1.2 UNPACKING ..........................6 1.3 STORAGE ............................ 6 2. INSTALLATION ....................... 7 2.1 INSTALLATION DATA ......................7 2.2 ENVIRONMENTAL CONDITIONS .................. 7 2.3 STORAGE DATA ........................8 2.4 RECOMMENDED CABLE SIZES ..................8 2.5 SCHEMATIC DIAGRAM ......................
  • Page 7 7. SIGNAL CONNECTIONS ................... 25 7.1 DIGITAL OUTPUT ........................ 25 7.2 SUMMARY ALARM ......................26 7.3 INPUT CONTACTS ......................26 7.4 EMERGENCY POWER OFF ....................26 7.5 BACKFEED PROTECTION ....................27 User Manual - 10H52241UM60 - Rev. 2 - 11/2018 Page 5...

  • Page 8: Receipt And Storage

    UNPACKING To remove Liebert CROSS RACK from its container, open the box – ensuring that it is the right way up – remove the mounting guides (see also para. 2.9 on page 12), and the protective packaging (see Fig.

  • Page 9: Installation

    Weight [kg] WARNING Liebert CROSS RACK must be installed in accordance with the requirements of HD 384.4.42 S1/A2 chapter 42, and IEC 60364-4-482 chapter 482. Only personnel authorised to enter restricted locations may work on Liebert CROSS RACK ENVIRONMENTAL CONDITIONS Liebert CROSS RACK must be installed in premises that are not exposed to sources of excessive heat, humidity, water and conductive dusts (see para.

  • Page 10: Storage Data

    NB. In order to avoid interference with particularly sensitive equipment, it is recommended that Liebert CROSS RACK power supply and output cables be placed in earthed metal ducts. Otherwise, use cables fitted with a shield. Where possible, other equipment cables (power supply, communication, data) should be laid separately from Liebert CROSS RACK cables.

  • Page 11: Schematic Diagram

    QS1 in position S2 – Source S2 side Fig. 2 – Schematic diagram As can be seen in Fig. 2, Liebert CROSS RACK is not fitted with switches on the input supplies. The switches and input external protection devices must be installed in the external power distribution system, in accordance with the requirements described in para.
  • Page 12 Fig. 3 – Power fuse positions and descriptions (refer to Liebert CROSS RACK schematic diagrams) TOTAL I FUSE TYPE RATING pre-arc @ 230V SIBA 50 145 06 100A/660V 2050 A .sec 3740 A .sec SWITCHES KRAUS & NAIMER CA 25 For info.

  • Page 13: Access To The Electrical Connection Area

    ACCESS TO THE ELECTRICAL CONNECTION AREA WARNING Check that the two input lines to Liebert CROSS RACK are disconnected from the power supply before making the power connections inside the machine. To access the area envisaged for the electrical connection, it is necessary to remove the protection present on the input and output terminals at the rear of Liebert CROSS RACK (see Fig.

  • Page 14: Appearance

    APPEARANCE Fig. 4 – Front panel CABLE GLAND Fig. 5 – Rear panel TERMINAL COVER FIXING SCREWS RACK-MOUNTING RACK can easily be mounted in an equipment rack using the two guides Liebert CROSS provided (see Fig. 6). Place the unit on the guides and secure it to the chassis using two M5 screws (see Fig.
  • Page 15 FIXING SCREW Fig. 7 – Securing Liebert CROSS RACK to the chassis Fig. 8 – Liebert CROSS RACK mounted on guide User Manual - 10H52241UM60 - Rev. 2 - 11/2018 Page 13...

  • Page 16: Power Connections - Input/Output

    This equipment is not designed for use in grounding systems with isolated neutral (IT system). WARNING Check that the two input lines to Liebert CROSS RACK are disconnected from the power supply before making the power connections inside the machine.

  • Page 17: Operation

    POWER SOURCE PRIORITY SELECTION Pushbutton P on the front panel of Liebert CROSS RACK (see Fig. 12) selects one of the two input sources as the priority one. Press and hold the button for at least 1 second to ensure that the priority is accepted.

  • Page 18: Settings

    (transfer is also effected during the zero current crossing control in optimum conditions). N.B. All settings and operating modes of Liebert CROSS RACK can easily be modified or enabled in accordance with the instructions in para. 4.2 – SETTINGS.

  • Page 19: Preliminary Checks

    Fig. 14 on page 24), and ensure that they are configured correctly, if used. − Check that the “load” switches are OFF (0). − Check that Liebert CROSS RACK Bypass switch QS1 is in OFF (0) (see Fig. 11) User Manual - 10H52241UM60 - Rev. 2 - 11/2018...

  • Page 20: Bypass Switch

    4.4.1 FIRST SWITCH-ON FROM SOURCE S1 Check that all switches are OFF and check Liebert CROSS RACK signal connections. Switch ON the external S1 input switch. Wait for several seconds until the logic is enabled and the following LEDs on the display are switched ON (see Fig.

  • Page 21: First Switch-On From Source S2

    LED N°10 Switch ON the external S1 input switch. N.B. The first time Liebert CROSS RACK is switched on, it is set-up for operation with S1 as the priority source, therefore, when powered up from Source S2, Liebert CROSS RACK switches the Load to Source S1 a few seconds after having verified that this last is present and within tolerance.

  • Page 22: Manual Bypass Disable From Source S2

    If present and enabled, ensure that the 25-pin Digital Output and 2-pin EPO connectors on the rear of the unit have been reinserted correctly Wait for several seconds until the logic becomes intelligent and the following LEDs on the display are switched ON (see Fig. 12) Priority LED N°1 LED N°8 LED N°11...

  • Page 23: Control Panel

    CONTROLS AND SIGNALS Liebert CROSS RACK is fitted with a control panel on the front part of the unit. This includes a mimic panel and warning lights (LED) to indicate the operating status of the unit in real time. In fact, the status of the sources, the static switches and the By-pass, the load condition and the maximum operating temperature are all monitored continuously.

  • Page 24: Control Panel

    • LED 6 & 7 – By-pass Switch Status Indicators LED ON = By-pass Switch CLOSED LED OFF = By-pass Switch OPEN • LED 8 & 9 – Source S1 and S2 Status Indicators LED ON = Source OK LED OFF = Source OUT OF TOLERANCE •...

  • Page 25: Maintenance

    (see Fig. 15 on page 25) in accordance with the Bypass procedures 4.6 and 4.7 on pages 19 and 19, before extracting or reinserting the module. Otherwise it will not be possible to remove it, and the load supply may not be guaranteed during Liebert CROSS RACK operation.
  • Page 26 FIXING SCREWS Fig. 14 – Module fixing screws (2 of 4) Page 24 User Manual - 10H52241UM60 - Rev. 2 - 11/2018...

  • Page 27: Signal Connections

    DIGITAL OUTPUT Liebert CROSS RACK is equipped with a full set of digital, optically isolated output contacts, which can be accessed via the 25-pin connector on the rear panel of the unit; see Fig. 15.

  • Page 28: Summary Alarm

    QS1. EMERGENCY POWER OFF The Liebert CROSS RACK EPO can be enabled remotely if safety conditions make it necessary. This input is available via the 2-pin connector on the rear of the unit (see Fig. 15). Connect pins 1 and 2 to a switch having the characteristics of an emergency pushbutton, normally ON, and having a mechanism which holds it in the OFF position.

  • Page 29: Backfeed Protection

    E.P.O. connector, otherwise the load supply will be interrupted, see also para. 6.1 and 7.3. BACKFEED PROTECTION This feature prevents potential electric shock hazards on the alternative Liebert CROSS RACK mains supply terminal (the source that is not currently supplying the laod) in the event of a static switch SCR failure.
  • Page 30 Follow local municipal waste ordinances for proper disposal provisions to reduce the environmental impact of waste electrical and electronic equipment (WEEE). For information regarding the scrapping of this equipment please contact your closest Vertiv Representative. Page 28 User Manual - 10H52241UM60 - Rev. 2 - 11/2018...
  • Page 31 | Vertiv Infrastructure Limited, George Curl Way, Southampton, SO18 2RY, VAT Number: GB188146827 Vertiv and the Vertiv logo are registered trademarks or trademarks of Vertiv Co. All other names and logos referred to are trade names, trademarks, or registered trademarks of their respective owners. c 2017 Vertiv Co. All rights reserved...

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