PER1102+Li 2kVA lithium rack mount UPS 2U for server systems
2U Lithium UPS | 2000VA/2000W | 48VDC | 1-20A Charging | BMS
Prostar PER1102+Li 2kVA lithium rack mount UPS is an enterprise‑grade 2U online double‑conversion power backup solution for server systems, edge computing hubs, and network infrastructure. Its 2U rack‑mounted chassis occupies 440 × 420 × 88 mm. The 48V‑class LiFePO4 battery architecture, pure sine wave output, 0 ms AC‑to‑battery transfer, input power factor ≥0.99, and optional SNMP/dry‑contact communication provide power protection, installation flexibility, and intelligent battery management.
Its 90‑degree rotatable display allows the same UPS to be configured for rack mount or tower installation while keeping the front‑panel information correctly oriented. This makes the PER1102+Li suitable for installations where cabinet space, equipment orientation, and service accessibility change.
Server Equipment Needs More Than Backup Power
Modern IT equipment reacts to unstable electrical conditions.
Servers, storage systems, network switches, routers, firewalls, telecom equipment, edge computing nodes, and other electronic loads can experience:
- Voltage fluctuations
- Power interruptions
- Frequency instability
- Electrical noise and waveform distortion
- Short-duration voltage disturbances
- Battery degradation
- Limited equipment-room space
- Poor visibility of battery operating conditions
For these applications, a conventional backup power supply may not provide enough control over power quality or battery management.
A lithium rack mount UPS addresses the problem differently. Instead of treating the UPS only as an emergency battery, an online UPS continuously conditions the electrical supply while maintaining a controlled energy path between the utility, UPS inverter, battery system, and protected load.
Lithium Rack Mount UPS 2000VA
The PER1102+Li lithium rack mount UPS delivers 2000VA / 2000W output capacity in a 2U chassis.
Its 2U rack architecture fits server cabinets and network racks. The convertible installation design allows the UPS to deploy as either a rack‑mounted or tower‑type unit.
For UPS engineering, the relevant international standards include the IEC 62040 series. IEC 62040‑1 addresses UPS safety requirements, IEC 62040‑2 addresses electromagnetic compatibility (EMC), and IEC 62040‑3 establishes performance and test requirements for UPS systems.
For industrial lithium battery applications, IEC 62619:2022 includes stationary applications such as telecommunications, UPS, and energy‑storage systems within its scope.
About the PER1102+Li, the manufacturer specification defines the product as a 2000VA/2000W, 2U rack‑mounted UPS supporting LiFePO4 lithium batteries, with a 51.2VDC nominal battery voltage for the LiFePO4 configuration.
The chassis measures 440 × 420 × 88 mm, with a net weight of approximately 7.9 kg.
| Parameter | Specification |
| UPS Capacity | 2000VA / 2000W |
| Form Factor | Rack Mount / Tower Convertible |
| Rack Height | 2U |
| Dimensions | 440 × 420 × 88 mm |
| Net Weight | 7.9 kg |
| Battery | LiFePO4 Lithium / Lead-Acid |
| Nominal Battery Voltage | 48VDC / 51.2VDC for LiFePO4 |
| Output Voltage | 208/220/230/240VAC selectable |
| Waveform | Pure Sine Wave |
| AC-to-Battery Transfer | 0 ms |
| Battery-to-AC Transfer | 0 ms |
| Input Power Factor | ≥0.99 |
| AC Mode Efficiency | >94% |
| Battery Mode Efficiency | >90% |
| Communication | USB, RS485 for BMS |
| Optional Communication | SNMP / Dry Contact |
| BMS Protocol | Pylontech RS485 and CANbus |
2U Lithium Rack Mount UPS for Space-Constrained Server Rooms
Rack space is one of the most valuable resources in a server cabinet.
A tower UPS can provide backup power, but it may consume floor or cabinet space that could otherwise hold IT equipment.
The PER1102+Li uses a 2U rack‑mounted architecture, providing 2kVA/2kW of UPS capacity within an 88 mm‑high chassis.
This makes it suitable for:
- Server racks
- Network cabinets
- Telecom racks
- Edge computing cabinets
- Security systems
- Data acquisition equipment
- Industrial control cabinets
- Small data centers
- IT equipment rooms
The 440 × 420 × 88 mm enclosure is specifically suited to rack-based installations.
For a rack-mounted UPS, capacity alone is not enough. IT managers also need to consider:
UPS capacity + rack height + battery technology + service accessibility + communication capability.
A 2U design can help preserve rack space while still providing online UPS protection for critical loads.
One UPS, Two Installation Configurations
One of the most practical features of the PER1102+Li is its convertible installation concept.
The UPS can be installed as:
Rack Mount
Ideal for:
- 19-inch server cabinets
- Network racks
- Telecom cabinets
- Data center racks
- IT equipment rooms
Tower Type
Suitable for:
- Server rooms without available rack space
- Office IT environments
- Network equipment rooms
- Standalone server deployments
- Installations where floor placement is preferred
The front display rotates 90 degrees, keeping the user interface correctly oriented when the UPS changes between rack‑mounted and tower‑type installation.
This solves a practical installation problem: the same UPS platform adapts to different equipment layouts without requiring a different chassis design.
Rack Mount vs. Tower Installation
| Installation | Typical Environment | Main Advantage |
| Rack Mount | Server cabinet | Saves floor space and integrates with rack equipment |
| Network cabinet | Centralized power protection | |
| Telecom cabinet | Efficient use of vertical rack space | |
| Tower | Office/server room | Flexible standalone installation |
| Network equipment room | No rack mounting required | |
| Edge deployment | Easier adaptation to different layouts |
This flexibility is especially useful for system integrators managing projects with different cabinet configurations.
90° Rotatable LCD
The rotatable display improves installation flexibility and user experience.
When a UPS rotates from rack orientation to tower orientation, a fixed display may appear sideways.
The PER1102+Li solves this with a 90‑degree rotatable LCD interface.
The display remains visually aligned with the physical orientation of the UPS.
This provides several practical benefits:
- Easier status checking
- Better readability
- Cleaner installation appearance
- More flexible deployment
- Easier commissioning
- Improved service accessibility
For system integrators, this also reduces the need to stock separate rack and tower versions for certain applications.
LiFePO4 Battery and BMS Communication
A lithium UPS requires evaluation beyond replacing a lead‑acid battery with a lithium battery. The battery pack, Battery Management System (BMS), charging strategy, protection logic, and UPS‑to‑BMS communication all affect system behavior.
The PER1102+Li supports LiFePO4 lithium batteries and lead‑acid batteries. For the LiFePO4 configuration, the nominal battery voltage is 51.2VDC. The UPS supports charging‑current adjustment from 1A to 20A, with 5A as the default, and supports CC/Floating or CC/CV/Floating charging algorithms.
The integrated battery protection functions include:
- Over-charge protection
- Over-discharge protection
- Over-current protection
- Short-circuit protection
- Over-temperature protection
- Under-temperature protection
The UPS provides RS485 BMS communication and native support for Pylontech RS485 and CANbus protocols.
This architecture applies to LiFePO4 rack mount UPS, lithium ion UPS for server systems, and applications requiring coordinated UPS and battery monitoring.
IEC 62619:2022 identifies UPS and other stationary energy-storage applications within the scope of safety requirements for secondary lithium cells and batteries used in industrial applications.
Important: IEC 62619 being relevant to the application does not, by itself, mean that the PER1102+Li battery system is IEC 62619 certified. Any certification or conformity claim should be made only against the manufacturer’s actual test reports and certificates.
Technical Specification
| Model | PER1102+Li |
| Capacity | 2000VA / 2000W |
| Topology | Online UPS |
| Form Factor | Rack Mount / Tower Convertible |
| Height | 2U |
| Dimensions | 440 × 420 × 88 mm |
| Weight | 7.9 kg |
| Input Phase | Single Phase, L+N+PE |
| Input Power Factor | ≥0.99 |
| Input THDi | <6% |
| Output Voltage | 208/220/230/240VAC selectable |
| Output Waveform | Pure Sine Wave |
| Output THDv | <3% linear / <6% non-linear |
| Transfer Time | 0ms AC ↔ Battery |
| AC Efficiency | >94% |
| Battery Efficiency | >90% |
| Battery Type | LiFePO4 Lithium / Lead-Acid |
| LiFePO4 Nominal Voltage | 51.2VDC |
| Charging Current | 1–20A, 5A default |
| BMS Protection | Over/under-voltage, over-current, temperature, short circuit |
| Communication | USB / RS485 |
| BMS Protocol | Pylontech RS485 / CANbus |
| Optional Expansion | SNMP / Dry Contact |
| Operating Temperature | 0°C–40°C |
| Humidity | 20%–95%, non-condensing |
| Noise | <50dBA @ 1m |
Where is the PER1102+Li Lithium Rack Mount UPS Used?
The PER1102+Li is particularly suitable for applications where continuous power protection, compact installation, lithium battery technology, and remote monitoring are important.
Server Systems
Protect servers from power interruptions, voltage instability, and waveform disturbances.
Network Equipment
Suitable for switches, routers, firewalls, gateways, and network infrastructure.
Edge Computing
The rack/tower convertible design is useful for distributed IT installations where cabinet configurations vary.
Telecom Equipment
The compact 2U chassis allows efficient integration into equipment racks.
Security and Surveillance Systems
Provides pure sine wave power protection for critical electronic equipment.
Lithium UPS Detail
| 1. External Battery Connector | 2. Emergency Power Off(Option) | 3. RS485 Port for BMS |
| 4. USB Port | 5. AC Output Sockets | 6. Grounding |
| 7. Intelligent Slot(for SNMP Card or AS400 Dry Contact) | 8. Input Circuit Breaker | 9. AC Input Terminal |
Why Choose a Lithium Rack Mount UPS for Servers?
The PER1102+Li is designed for applications where the protected load requires continuous, regulated AC power and controlled battery backup.
For server and network environments, three specifications are particularly relevant:
- 0ms AC-to-battery transfer
- Pure sine wave output
- ±1% battery-mode AC voltage regulation
The product specification also defines output voltage as selectable between 208V, 220V, 230V, and 240V, with battery-mode frequency regulation of 50Hz or 60Hz ±0.1%.
These characteristics make the PER1102+Li technically relevant to server systems, network equipment, telecom equipment, edge computing infrastructure, and other electronic loads requiring controlled AC power. Actual application suitability should still be verified against the connected equipment’s rated power, startup current, crest-factor requirements, operating environment, and required battery runtime.
A 0ms transfer specification means the UPS does not introduce a specified interruption when transferring between AC operation and battery operation. This is particularly relevant to continuously powered electronic loads.
However, 0ms transfer should not be interpreted as a guarantee that every connected server or power supply will operate under every abnormal grid condition. System-level compatibility depends on the UPS, connected load, upstream protection, grounding, bypass configuration, and installation conditions.
Frequently Asked Questions (FAQ)
How does the 90-degree rotating LCD display work on the PER1102+Li?
Why is a 2kVA lithium rack mount UPS better suited for server systems than lead-acid options?
Can a rack mount UPS be used as a tower?
Is LiFePO4 lithium battery safe for indoor server room environments?
Can the PER1102+Li handle severe grid voltage fluctuations without draining the battery?
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| MODEL | PER1102+Li | |
| CAPACITY | 2000VA/ 2000W | |
| Form Factor | Rack Mounted | |
| Size, W X D X H (mm) | 440x420x88 [2U] | |
| Net Weight (kgs) | 7.9 | |
| INPUT | ||
| Voltage Range | Low Line Transfer | 176Vac (Load ≥100%); 176–110Vac (Load 100%–50%); 110Vac (Load ≤50%) |
| Low Line Recovery | Low transfer voltage + 10 V | |
| High Line Transfer | 300 Vac ±5% | |
| High Line Recovery | 290 Vac ±5% | |
| Frequency Range | 50Hz:44-56Hz or 60Hz: 54-66Hz | |
| Phase | Single Phase, L+N+PE | |
| Power Factor | ≧ 0.99 @ nominal voltage (input voltage) | |
| Harmonic Distortion(THDi) | < 6% | |
| OUTPUT | ||
| Output Voltage | 208/220/230/240VAC (Selectable) | |
| AC Voltage Regulation | ± 1% (Batt. Mode) | |
| Frequency Range(AC Mode) | Synchronized to Mains | |
| Frequency Range (Batt. Mode) | 50Hz or 60Hz ± 0.1% | |
| Current Crest Ratio | 3:1 | |
| Harmonic Distortion(THDv) | <3% THD (Linear Load), <6% THD (Non-linear Load) | |
| Transfer Time | AC to Battery | 0ms |
| Battery to AC | 0ms | |
| Inverter to Bypass | 4ms | |
| Waveform | Pure Sine Wave | |
| Overload Capacity | AC Mode: Battery Mode: 30mins @102%-110% load 1min @102%-110% load 10mins @110%-130% load 10sec @110%-130% load 30sec @130%-150% load 3sec @130%-150% load 200ms @>150% load 200ms @>150% load |
|
| EFFICIENCY | ||
| AC Mode | > 94% | |
| Battery Mode | > 90% | |
| BATTERY | ||
| Battery Type | LiFePO4 Lithium / Lead-Acid | |
| Nominal Battery Voltage | 48VDC (51.2VDC for LiFePO4) | |
| Charging Current | 5A(Default),1A-20A | |
| Charging Voltage | 56.4VDC (14.1V * N) | |
| Charging Algorithm | 2-stage (CC/Floating) or 3-stage (CC/CV/Floating) | |
| BMS Protection | Over-charge, Over-discharge, Over-current, Short-circuit, Over-temp, Under-temp | |
| Integrated Functions | Auto Restart, Self-Test Function, Smart Battery Management | |
| ECO | ||
| Input Voltage Range | Nominal Voltage ± 15% | |
| Input Frequency Range | 50Hz / 60Hz ± 4Hz | |
| ENVIRONMENT | ||
| Ambient Temperature | 0°C – 40°C | |
| Operating Humidity | 20%-95% (Non-condensing) | |
| Storage Temperature | -15~60℃ (Excluding battery) | |
| Altitude | 1000 m (derate for higher altitudes up to 4000 m) | |
| Noise Level | Less than 50dBA @ 1 Meter | |
| COMMUNICATION | ||
| Communication Interface | USB, RS485 for BMS | |
| BMS Protocol Support | Native support for Pylontech RS485 and CANbus protocols | |
| Expansion Slot | Smart Slot for optional SNMP / Dry Contact cards | |
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