System description electrical Requirements
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 Liebert® RX™GUIDE SPECIFICATIONS
These specifications describe requirements for a small-footprint power distribution cabinet, supplying power to sensitive loads. It shall include all equipment to properly interface the AC power source with the intended load.
The Liebert RX shall be designed, manufactured, tested and installed in compliance with:
The Liebert RX shall be UL listed under UL 60950 Standard for Information Technology. The Liebert RX shall comply with latest FCC Part 15 EMI emission limits for Class A computing devices. The Liebert RX shall safely withstand without misoperation or damage:
Input/output voltage shall be (415/240V, 50Hz) (400/230V, 50Hz) (380/220V, 50Hz) (208/120V, 60Hz) (415/240V, 60Hz) (400/230V, 60Hz)(480/277V, 60Hz) AC, three-phase, four-wire-plus-ground.
Wiring diagrams and drawings of major components shall be furnished.
A list of recommended spare parts shall be supplied at the customer’s request.
An in-service user’s list shall be furnished upon request.
The manufacturer shall provide a one-year warranty against defects in material and workmanship for 12 months after initial startup or 18 months after shipping date, whichever occurs first. (Refer to the Warranty Statement for details.)
The Liebert RX shall be factory-tested before shipment. Testing shall include, but shall not be limited to: Quality Control Checks, “Hi-Pot” Test, two times rated voltage plus 1000 volts, per UL requirements (and Metering Calibration Tests). The Liebert RX shall be designed and manufactured according to world-class quality standards. The manufacturer shall be ISO 9001 certified.
The frame shall be constructed of galvanized steel to provide a strong substructure. The cabinet shall be a NEMA Type 1 enclosure and meet IP20 requirements. The unit shall have a lockable, removable, hinged door. The unit shall have top and bottom input/output cable trays with a minimum of 84 cable/conduit openings. All service shall be capable of being performed with access to the front. Retrofitting additional power distribution cables shall require access to the front of the unit only. Hinged door shall provide access to the main panelboard circuit breaker and to all output circuit breakers. The color of the exterior door and panels shall be the manufacturer’s standard color, black gray matte. The unit shall be naturally convection-cooled. No fans for forced-air cooling system shall be used. The convection cooling method shall allow continuous full-load operation. Heat rejection shall be through a protective top that prohibits entry of foreign material. The cabinet dimensions shall be a maximum of 24 in. wide by 13 in. deep by 78.7 in. high (610 x 328mm x 2000). The weight shall be 225 lb. (102 kg). The Liebert RX must be back-supported by column, unistrut, or wire cage or two units can be installed back-to-back as a single unit that is a drop-in replacement for a 24 in. x 24 in. (610 x 610mm) raised floor tile.
Input three-phase power conductors shall connect to the (main panelboard circuit breaker [with main panelboard breaker]) (panelboard input busbars [with no main panelboard breaker]). Input neutral conductor shall connect to a 173% rated neutral busbar and the ground conductor to a parity-sized insulated ground busbar.
(The distribution panelboard shall be protected by a main panelboard circuit breaker. The breaker shall be UL listed and IEC-rated for use at the system voltage. (Panelboard is protected by a 400A continuous current rated circuit breaker with an interrupting rating of 35kA RMS.) The Liebert RX shall be supplied with no main panelboard breaker.)
The Liebert RX shall contain one vertically mounted (Square D bolt-in/plug-in) (ABB Finger-Safe) panelboard for distribution to the intended loads. The panelboard shall be totally enclosed with a hinged accent panel that provides access to the panelboard. The panelboard shall have a rating of 400 amperes, with an interrupting rating of (22kA with Square D 22kA rated branch breakers)(10kA with Square D 10kA rated branch breakers) (35kA with ABB with panelboard main breaker)(10kA with ABB without panelboard main breaker) [kA rating not available @380-415V]) RMS. The panelboard shall provide a total of (84 [Square D or ABB]) (42 [ABB]) single-pole branch circuit breaker positions. The panelboard shall include separate, isolated neutral and safety-ground busbars for the neutral and safety-ground connections for at least 84 output circuits. The neutral busbar and wiring shall be sized for at least 1.73 times the panelboard full load rating to accommodate high harmonic neutral currents associated with single-phase nonlinear loads.
The Liebert RX shall be supplied with no monitoring.
The Current Plus Monitoring (CPM) shall monitor the current and voltage of the panelboard and include a monochrome Liquid Crystal Display (LCD) with oval bezel, power and alarm LED's and audible alarm. The CPM shall display the power parameters and alarms listed below. A display shall be mounted on the front door, the display and switches shall be accessible without opening the door. The following metering parameters shall be displayed:
Circuit identification and status of each breaker shall be displayed. The CPM shall detect the following conditions and annunciate them by alarm message:
All alarm thresholds for monitored parameters shall be adjustable by way of the DB-9 setup port to match site requirements. The factory setpoints for the alarms shall be as follows:
Summary Alarm
Summary Alarm Contacts
To facilitate troubleshooting, all alarms shall be stored in non-volatile memory to protect against erasure by a power outage. Alarms shall be manually reset after the alarm condition has been corrected. Communication – CPM shall have two Liebert IntelliSlot™ ports; up to two Liebert IntelliSlot cards can be added for customer connections to a Building Management System (BMS) or Liebert SiteScan® monitoring interface.
Liebert LDMF shall be capable of providing monitoring of the panelboard main breaker and branch circuit breakers and includes a monochrome Liquid Crystal Display (LCD) with oval bezel, power and alarm LED's and audible alarm. The Liebert LDMF shall display the power parameters and alarms listed below. A display shall be mounted on the front door. The display and switches shall be accessible without opening the door. The Liebert LDMF system shall monitor up to 84 poles. Each sensor module shall contain twenty-one 100A current transformers (CT) encapsulated in an epoxy-filled plastic enclosure designed to mount next to the panelboard. No individual current transformers mounted on a printed circuit board shall be used. The sensor module shall be designed to work with Square D panelboards. In addition to monitoring the branch circuit breakers, the Liebert LDMF shall monitor the current and voltage of the panelboard main circuit breaker. These measurements are used for reporting the average RMS current, power and other parameters. The Liebert LDMF shall report alarm and status conditions for each branch circuit breaker and the panelboard main circuit breaker. The Liebert LDMF shall monitor and display the following parameters for each branch circuit breaker:
In addition, the Liebert LDMF shall monitor and display the following parameters for the panelboard main circuit breaker:
Circuit identification and status of each breaker shall be displayed. The Liebert LDMF shall detect the following conditions and annunciate them by alarm message:
All alarm thresholds for monitored parameters shall be adjustable by way of the LDMF DB-9 setup port to match site requirements. The factory setpoints for the alarms shall be as follows: Panelboard Main Breaker:
Branch Breakers
Summary Alarm
Summary Alarm Contacts
To facilitate troubleshooting, all alarms shall be stored in non-volatile memory for protection against erasure by a power outage. Alarms shall be manually reset after the alarm condition has been corrected. Communication - The Liebert LDMF shall have two Liebert IntelliSlot ports; up to two Liebert IntelliSlot cards can be added for customer connections to a Building Management System (BMS) or Liebert SiteScan monitoring interface.
Monitoring interface module shall allow the Liebert LDMF™ to communicate with Liebert SiteScan Web 4.0 or later. The module shall include software and graphics that support up to 84 branch breakers using an Ethernet connection.
The Liebert RX shall be supplied with an IS-UNITY-DP Card for remote communication using two of the following protocols: HTTP/HTTPS, Vertiv Protocol, Email, SMS, SNMP v1/v2c/v3, BACnet IP/MSTP and Modbus TCP/RTU output. A serial RS-485 two wire connector shall be supplied. Note: Two of the 3rd party protocols (SNMP, Modbus or BACnet) may be configured and used simultaneously. Modbus RTU and BACnet MSTP cannot both be enabled simultaneously.
Vertiv shall permit the owner or a representative to witness the factory test of each unit. The factory shall perform its standard witness test to demonstrate that the unit meets the Liebert RX specifications.
A certified copy of the factory test report shall be provided for each unit.
Heavy-duty solid wood crating shall be provided to meet international requirements regarding package strength and special markings for overseas shipments.
Factory startup, preventive maintenance and full service for the specified system shall be available and included upon request. The manufacturer shall directly employ a service organization of factory-trained field service personnel dedicated to the startup, maintenance and repair of the manufacturer’s power equipment. The manufacturer shall maintain a dispatch center 24 hours per day, 365 days per year, to minimize service response time and to maximize availability of qualified service personnel. SL-20502_REV4_12-17 Guide Specifications |
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