1. Introduction
The Vertiv Liebert EXS is a compact, monolithic Uninterruptible Power Supply (UPS) designed to provide continuous, conditioned, and regulated output voltage. This UPS utilizes true on-line, double-conversion technology, ensuring a clean sine wave input power for sensitive equipment. It is suitable for powering IT devices in small data rooms, IT closets, VoIP systems, branch storage, and security systems. The Liebert EXS offers economical, efficient, and reliable three-phase power for critical loads up to 20kVA, featuring a unity power factor and high power-density in an optimized, standalone design.
2. Safety Information
Before installing, operating, or performing maintenance on the Vertiv Liebert EXS UPS, read and understand all safety instructions provided in the packaging and on the unit itself. Failure to follow these instructions may result in electric shock, fire, or serious injury. This equipment contains high voltage and stored energy. Only qualified personnel should perform installation and service.
- Electrical Hazard: Do not open the UPS enclosure. There are no user-serviceable parts inside.
- Weight Hazard: The UPS unit is heavy. Use appropriate lifting equipment and techniques during installation to prevent injury. Refer to specifications for item weight.
- Battery Safety: Batteries can present a risk of electrical shock and high short-circuit current. Observe precautions when working with batteries.
- Ventilation: Ensure adequate airflow around the UPS. Do not block ventilation openings.
3. Product Features
The Vertiv Liebert EXS UPS incorporates several key features designed for optimal performance and reliability:
- Reliable 3-Phase Power: Provides the highest level of power protection for critical systems.
- Online Double Conversion Technology: Ensures continuous power conditioning and high availability for IT systems.
- High Operating Efficiency: Achieves over 93% efficiency in double conversion mode and 99% in ECO mode, reducing energy consumption and heat dissipation.
- Advanced Battery Monitoring: Capable of monitoring battery capacity, temperature, humidity, access, and leaks for enhanced battery health and longevity.
- 1.0 Output Power Factor: Delivers more usable power to connected loads, optimizing power utilization.
- Integrated Maintenance Bypass Cabinet (MBC): Facilitates UPS maintenance or replacement without requiring a shutdown of connected equipment.
- Compact Design: Space-saving footprint provides optimized space utilization and flexible installation.
- Factory Installed Network Card: Includes a Liebert IS-UNITY DP card for remote management capabilities.
- Internal Battery Cabinets with Auto-Detection: Ensures accurate reporting of available runtime when used with external battery cabinets.
4. Setup and Installation
The Vertiv Liebert EXS UPS is designed for ease of installation. However, due to its weight and electrical requirements, professional installation is recommended.
4.1 Unpacking and Inspection
- Carefully unpack the UPS unit and all accessories.
- Inspect the unit for any shipping damage. Report any damage to the carrier and your Vertiv representative immediately.
- Verify that all components listed in the packing slip are present.
4.2 Site Preparation
- Ensure the installation site meets environmental requirements (temperature, humidity) as specified in the technical data.
- Confirm that the floor can support the weight of the UPS unit (refer to specifications).
- Provide adequate clearance around the unit for ventilation and maintenance access.
4.3 Electrical Connections
All electrical connections must be performed by a qualified electrician in accordance with local and national electrical codes.
- Connect the input power to the designated terminals.
- Connect the output power to the critical load distribution panel.
- Ensure proper grounding of the unit.
4.4 Initial Startup
- After all electrical connections are secure, close the input circuit breaker.
- Follow the on-screen prompts on the UPS display for initial configuration.
- Verify proper operation and status indicators.
5. Operation
The Liebert EXS UPS operates automatically to protect connected equipment. The front panel display provides real-time status and allows for configuration adjustments.
5.1 Front Panel Display
The LCD display provides information on input/output voltage, load level, battery status, and alarm conditions. Navigate through menus using the control buttons adjacent to the display.
5.2 Operating Modes
- Online Mode: The UPS continuously converts AC input to DC to charge batteries and then converts DC back to AC for the output, providing maximum protection.
- ECO Mode: An energy-saving mode where the UPS operates in bypass, providing power directly from the utility, and switches to online mode upon power disturbance.
- Battery Mode: When utility power fails, the UPS automatically switches to battery power to maintain output.
5.3 Shutdown Procedures
To safely shut down the UPS, follow these steps:
- Power down all connected equipment.
- Initiate a UPS shutdown via the front panel display or management software.
- Once the UPS is off, open the input circuit breaker to fully isolate the unit from the power source.
6. Maintenance
Regular maintenance ensures the longevity and reliable operation of your Vertiv Liebert EXS UPS.
6.1 Routine Checks
- Periodically check the UPS status on the front panel display for any alarms or warnings.
- Ensure ventilation openings are clear of obstructions.
- Inspect power cables for any signs of damage.
6.2 Battery Maintenance
The Liebert EXS features advanced battery monitoring. However, periodic battery health checks by qualified personnel are recommended. Batteries have a finite lifespan and will require replacement.
6.3 Integrated Maintenance Bypass
The integrated maintenance bypass cabinet allows for safe servicing of the UPS without interrupting power to critical loads. Refer to the detailed service manual for procedures on utilizing the maintenance bypass.
7. Troubleshooting
This section provides general guidance for common issues. For complex problems, contact Vertiv technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| UPS not turning on | No input power; UPS fault | Check input circuit breaker; verify power source; contact support if fault persists. |
| UPS beeping continuously | On battery power; overload; battery fault | Check utility power; reduce load; check battery status on display. |
| Connected equipment not receiving power | UPS in bypass; output breaker tripped; UPS fault | Check UPS operating mode; reset output breaker; contact support. |
| High temperature alarm | Blocked ventilation; high ambient temperature | Clear obstructions; ensure adequate room cooling. |
8. Specifications (Model EXS20KN)
| Specification | Value |
|---|---|
| Model Number | EXS20KN |
| Capacity | 20kVA / 20kW |
| Input Voltage | 208/120VAC (220/127VAC) 3-Phase 4 Wire |
| Output Voltage | 208 Volts |
| Product Dimensions (D x W x H) | 29.5" x 17.3" x 62.9" (74.9 cm x 43.9 cm x 159.8 cm) |
| Item Weight | 734 pounds (333 kg) |
| Battery Cell Composition | Lead Acid |
| Color | Black |
| Manufacturer | Vertiv |
| Date First Available | December 14, 2023 |
9. Warranty and Support
9.1 Product Warranty
The Vertiv Liebert EXS UPS comes with comprehensive coverage, including a standard 1-year warranty. A 3-year extended warranty option may also be available. Please refer to your purchase documentation or contact Vertiv for specific warranty terms and conditions.
9.2 Technical Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Vertiv customer support. Contact information can typically be found on the Vertiv official website or in your product documentation.
Vertiv Official Website: www.vertiv.com
