- Product Description
-
Key Performance Benefits
- 99% ECO Mode Efficiency — Routes the load through the bypass path when mains quality is stable, cutting energy losses to near-negligible levels for variable IT workloads.
- 96.5% Online Double Conversion — Sustains high conversion efficiency even when the inverter must carry the full load, limiting heat output in constrained server rooms.
- Unitary Power Factor (PF=1.0) — Converts every rated kVA into usable kW, so a smaller-rated Liebert APM90 frame covers the same real load as a larger conventional UPS.
- 18kVA Module Granularity — Capacity grows in 18kVA steps, letting IT rooms match installed power to actual demand instead of over-sizing from day one.
- Intelligent Battery Management — Controlled charging and periodic testing extend battery service life, reducing replacement frequency and waste.
- Hot-Swappable Power Modules — Modules are replaced or added while the critical load stays online, supporting maintenance windows measured in minutes.
- Compact Row-Based Footprint — Fits server rows or small equipment rooms, freeing floor area that would otherwise go to cooling or distribution gear.
Technical Specifications
Technical Indicator Specification Detail (APM90) Power Rating 18kVA to 90kVA (Scalable in 18kVA modules) Topology Modular Online Double Conversion Conversion Efficiency Up to 96.5% (Double Conversion) / Up to 99% (ECO Mode) Output Power Factor 1.0 (Unitary) Module Size 18kVA/18kW High-Density Power Modules Frame Capacity Up to 90kVA/kW per frame Battery Management Intelligent testing and deep discharge protection 
APM90: Matching Energy Consumption to Real IT Load
Small and mid-sized IT rooms typically run their UPS at 20% to 40% of nameplate capacity, a band where conventional fixed-capacity systems suffer their lowest efficiency and highest heat rejection.
Adding cooling load on top of electrical loss compounds the waste, pushing monthly energy bills well above what the protected equipment actually consumes.
The Liebert APM90 addresses this mismatch by letting operators deploy 18kVA at a time, so installed capacity tracks the load curve instead of forecasting years into the future.
Its ECO mode automatically bypasses the inverter when mains voltage and frequency stay within window, operating at 99% efficiency during the many hours when utility power is stable.

When a disturbance appears, the transfer to double conversion completes without operator action, preserving the same protection level as a full-time online system.
At 96.5% double-conversion efficiency, even the inverter path keeps losses contained during storms, generator transfers, or other periods when ECO mode is suppressed.
Compared with a traditional tower UPS sized for peak load, the APM90 avoids years of unnecessary conversion losses during normal operation, with savings visible in both electricity and cooling cost lines.
Specifying the Vertiv Liebert APM90 for IT rooms and small data centers converts an efficiency problem into a design advantage: granular 18kVA scaling keeps capital tied to real growth, while ECO and double-conversion modes trade off efficiency and protection automatically. The unitary power factor also allows a smaller frame to serve the same kW load, shrinking first cost and footprint together. Battery management that tests and protects strings in software reduces the maintenance burden typical of small-site UPS fleets. For facility teams running multiple branch offices or edge IT rooms, the APM90 delivers a repeatable, energy-efficient power architecture that holds up under audit and keeps operational cost predictable through the life of the installation.

Technical FAQ
Q: Does ECO mode sacrifice protection for efficiency?
A: The transfer to double conversion occurs automatically on any out-of-window event, so loads remain protected while mains quality is within specification.
Q: Can an existing 90kVA frame run with fewer than five 18kVA modules?
A: Yes, modules are added incrementally, allowing N, N+1, or expansion configurations within the same frame as the load grows.
Certification
Application
FAQ
Are we a trader or a manufacturer?
To be exact, we are an officially authorized agent and can get in touch with the manufacturers directly to enjoy a high proportion of cost discounts.
How to pack?
Can be packaged according to customer's needs
How long is your delivery time?
If the goods are in stock, generally 5-10 days. If there is no stock and an order needs to be placed, it needs to be determined according to the delivery dates of different brands.
Customer Visits
Warehouse
Our warehouse is located in the core logistics area with convenient transportation, covering an area of 1000 square meters, designed specifically for efficient, safe, and convenient storage and distribution.
There are brand new UPS (uninterruptible power supply), precision air conditioning, and various types of telecommunications power products from brands such as Vertiv, Huawei, Eltek, and Delta in the warehouse, as well as base station and data center equipment. These products are stored properly under intelligent management and environmental control, ensuring that every customer can receive the highest quality and most reliable products.
Whether it is large equipment or small electrical products, there are strict quality inspections and records at every step from warehousing to outbound, ensuring the safety and cycle management of goods.
In addition to efficient warehousing services, we also provide comprehensive logistics distribution, covering multiple transportation modes such as sea, land, and air, ensuring worry free storage and instant delivery of goods.
Liebert APM90 Modular UPS 18kVA, 99% ECO Efficiency for IT Rooms
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Category
Keywords
- Product Description
-
Key Performance Benefits
- 99% ECO Mode Efficiency — Routes the load through the bypass path when mains quality is stable, cutting energy losses to near-negligible levels for variable IT workloads.
- 96.5% Online Double Conversion — Sustains high conversion efficiency even when the inverter must carry the full load, limiting heat output in constrained server rooms.
- Unitary Power Factor (PF=1.0) — Converts every rated kVA into usable kW, so a smaller-rated Liebert APM90 frame covers the same real load as a larger conventional UPS.
- 18kVA Module Granularity — Capacity grows in 18kVA steps, letting IT rooms match installed power to actual demand instead of over-sizing from day one.
- Intelligent Battery Management — Controlled charging and periodic testing extend battery service life, reducing replacement frequency and waste.
- Hot-Swappable Power Modules — Modules are replaced or added while the critical load stays online, supporting maintenance windows measured in minutes.
- Compact Row-Based Footprint — Fits server rows or small equipment rooms, freeing floor area that would otherwise go to cooling or distribution gear.
Technical Specifications
Technical Indicator Specification Detail (APM90) Power Rating 18kVA to 90kVA (Scalable in 18kVA modules) Topology Modular Online Double Conversion Conversion Efficiency Up to 96.5% (Double Conversion) / Up to 99% (ECO Mode) Output Power Factor 1.0 (Unitary) Module Size 18kVA/18kW High-Density Power Modules Frame Capacity Up to 90kVA/kW per frame Battery Management Intelligent testing and deep discharge protection 
APM90: Matching Energy Consumption to Real IT Load
Small and mid-sized IT rooms typically run their UPS at 20% to 40% of nameplate capacity, a band where conventional fixed-capacity systems suffer their lowest efficiency and highest heat rejection.
Adding cooling load on top of electrical loss compounds the waste, pushing monthly energy bills well above what the protected equipment actually consumes.
The Liebert APM90 addresses this mismatch by letting operators deploy 18kVA at a time, so installed capacity tracks the load curve instead of forecasting years into the future.
Its ECO mode automatically bypasses the inverter when mains voltage and frequency stay within window, operating at 99% efficiency during the many hours when utility power is stable.

When a disturbance appears, the transfer to double conversion completes without operator action, preserving the same protection level as a full-time online system.
At 96.5% double-conversion efficiency, even the inverter path keeps losses contained during storms, generator transfers, or other periods when ECO mode is suppressed.
Compared with a traditional tower UPS sized for peak load, the APM90 avoids years of unnecessary conversion losses during normal operation, with savings visible in both electricity and cooling cost lines.
Specifying the Vertiv Liebert APM90 for IT rooms and small data centers converts an efficiency problem into a design advantage: granular 18kVA scaling keeps capital tied to real growth, while ECO and double-conversion modes trade off efficiency and protection automatically. The unitary power factor also allows a smaller frame to serve the same kW load, shrinking first cost and footprint together. Battery management that tests and protects strings in software reduces the maintenance burden typical of small-site UPS fleets. For facility teams running multiple branch offices or edge IT rooms, the APM90 delivers a repeatable, energy-efficient power architecture that holds up under audit and keeps operational cost predictable through the life of the installation.

Technical FAQ
Q: Does ECO mode sacrifice protection for efficiency?
A: The transfer to double conversion occurs automatically on any out-of-window event, so loads remain protected while mains quality is within specification.
Q: Can an existing 90kVA frame run with fewer than five 18kVA modules?
A: Yes, modules are added incrementally, allowing N, N+1, or expansion configurations within the same frame as the load grows.
Certification
Application
FAQ
Are we a trader or a manufacturer?
To be exact, we are an officially authorized agent and can get in touch with the manufacturers directly to enjoy a high proportion of cost discounts.
How to pack?
Can be packaged according to customer's needs
How long is your delivery time?
If the goods are in stock, generally 5-10 days. If there is no stock and an order needs to be placed, it needs to be determined according to the delivery dates of different brands.
Customer Visits
Warehouse
Our warehouse is located in the core logistics area with convenient transportation, covering an area of 1000 square meters, designed specifically for efficient, safe, and convenient storage and distribution.
There are brand new UPS (uninterruptible power supply), precision air conditioning, and various types of telecommunications power products from brands such as Vertiv, Huawei, Eltek, and Delta in the warehouse, as well as base station and data center equipment. These products are stored properly under intelligent management and environmental control, ensuring that every customer can receive the highest quality and most reliable products.
Whether it is large equipment or small electrical products, there are strict quality inspections and records at every step from warehousing to outbound, ensuring the safety and cycle management of goods.
In addition to efficient warehousing services, we also provide comprehensive logistics distribution, covering multiple transportation modes such as sea, land, and air, ensuring worry free storage and instant delivery of goods.
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