HGU-XE48 1U/2U 48V Telecom Inverter UPS (3-10kVA)

UPSBOSS delivers the HGU-XE48 series as the most compact, telecom-grade DC-to-AC inverter UPS for 48 V battery plants. Four capacity steps — 3 kVA, 5 kVA, 8 kVA and 10 kVA — share one 1U/2U rack chassis that drops straight into a standard 19-inch cabinet, takes its DC feed from any -48 V telecom plant or solar battery bank, and returns clean 220 V pure sine wave power to your AC load with ≤5 ms static-bypass handover.

Built around a high-frequency SPWM CPU-controlled inverter with bidirectional AC/DC priority logic, the HGU-XE48 keeps communication sites, edge cabinets and remote industrial nodes alive through grid failure, generator switchover and long utility outages — without the noise, weight or footprint of a traditional AC-input double-conversion system.

Engineered for unattended operation in telecom base stations, solar / wind hybrid plants, railway signalling rooms, marine vessels and emergency response vehicles, every HGU-XE48 unit ships with CE, TUV, IEC 62040, ISO 9001 and RoHS compliance, and is backed by UPSBOSS's global 3-year warranty and 24/7 multilingual engineering support.

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1. Product Overview

The HGU-XE48 is a 1U/2U 19-inch rack-mount pure sine wave inverter that bridges the 48 V DC battery world and the 220 V AC load world. Where conventional AC-input UPS units only protect against grid disturbances, the HGU-XE48 is purpose-built for sites where the primary energy source is already DC — telecom DC plants, off-grid PV battery banks, hybrid wind/solar systems and mobile DC platforms.

At the heart of the unit, a high-frequency SPWM control loop running on an industrial-grade CPU produces a clean sine wave with ≤3% THD on linear load, adaptive 50/60 Hz output, and voltage stability within ±15%. An integrated static AC bypass switch hands the load over to utility mains in ≤5 ms whenever mains is present and healthy, so mission-critical AC equipment never sees a glitch — even during deep battery cycling or generator changeover.

The platform is modular by design: any combination of 3 kVA, 5 kVA, 8 kVA and 10 kVA modules can be paralleled across racks to scale capacity in 2.4 kW to 7 kW building blocks. The result is a pay-as-you-grow power architecture for small-cell sites, PoP rooms, remote oil & gas telemetry, marine electronics rooms and emergency backup cabinets — all from one unified inverter family.

If your site runs on AC mains and you need a modular online double-conversion UPS for an IT room, see the HPM Modular UPS family. If your site already has a -48 V DC battery plant and you need 220V AC for telecom, solar, marine or industrial loads, the HGU-XE48 below is the right platform.

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2. Core Product Strengths

2.1 1U Ultra-Compact Rack Design — Modular, Stackable, Serviceable

• Compact rack-mount chassis (482 × 440 × 88 mm for 3 kVA / 5 kVA; 482 × 440 × 176 mm for 8 kVA / 10 kVA) fits every standard 19-inch cabinet and shares front-panel layout, mounting ears and rear connector pattern for fast field deployment.
• Front-access design with removable dust filter, intelligent variable-speed fan and clearly marked DC-input, AC-bypass and AC-output terminal blocks for safe, tool-light servicing.
• Modular scalability: parallel up to four HGU-XE48 units of any mix (3K + 5K + 8K + 10K) to build a non-equal-capacity N+1 redundant string, scaling from 3 kVA up to 40 kVA without redesigning the rack.
• Three power-source interface zones (DC input, AC bypass, AC output) are physically isolated and labelled, simplifying commissioning and reducing wiring errors in dense telecom racks.

2.2 Wide 48 V DC Input Range — Built for Real Telecom Plants

• 45.5 V – 57 V DC operating window covers all 48 V battery states — float, equalize, end-of-discharge and recharge — without false low-voltage trips.
• 63 A to 210 A DC input current ratings are sized for high-rate discharge and parallel battery strings, so the inverter never becomes the bottleneck of your DC plant.
• Battery-friendly charging profile with 45.5 V – 57 V DC voltage band and ≤10% charging current, extending valve-regulated lead-acid service life and protecting lithium battery management systems from over-stress.
• Backwards-compatible with legacy -48 V DC telecom plants, hybrid PV inverter battery ports and 48 V lithium rack systems from third-party suppliers.

2.3 Pure Sine Wave Output — ≤3% THD, Adaptive 50/60 Hz

• True sine wave output with ≤3% THD on linear loads (≤5% on non-linear), safe for sensitive electronics, medical instruments, telecom baseband units and IT servers.
• Output voltage 220 V ±15% (110 V ±15% available on request) with adaptive 50 Hz / 60 Hz auto-sensing for global deployment.
• Frequency stability ±0.1% under all load conditions, eliminating clock drift and inter-modulation issues in measurement and communication equipment.
• Static AC bypass with 187 V – 238 V utility window and adjustable ±10 Hz sync range, providing clean hand-off even with unstable generators or rural feeders.
• 3× inrush load handling for ≤0.5 s, comfortably starting transformers, motors and capacitive loads without nuisance tripping.

2.4 Intelligent Monitoring & Global Certifications

• Front-panel LCD shows DC input, AC bypass, AC output, load percentage, battery state, fault code and history — bilingual menu (English / Chinese) configurable in the field.
• Status LEDs (mains, inverter, bypass, fault) give at-a-glance health check for technicians wearing gloves on a tower top.
• Standard RS-485 and RS-232 communication ports, optional SNMP / Web network card slot for remote monitoring and integration with DCIM / NMS platforms.
• Fully certified to CE, TUV, IEC 62040, ISO 9001, ISO 14001 and RoHS — supporting global project bidding, customs clearance and standardized after-sales service.

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3. Typical Application Scenarios

• Mobile telecom base stations (BTS / Node-B / eNodeB) and small-cell street-furniture cabinets powered by -48 V DC plants.
• Off-grid and hybrid solar / wind sites with 48 V lithium or lead-acid battery banks — remote cabins, water-pumping stations, agricultural monitoring.
• Railway, metro and roadside signalling, control and communication cabinets operating from trackside -48 V DC supply.
• Marine and offshore platforms — yachts, fishing vessels, supply boats and offshore oil & gas telemetry rooms needing clean 220 V AC from the ship's 48 V DC bus.
• Mobile command vehicles, broadcast vans, emergency response units and disaster-relay trailers with DC battery banks.
• Industrial automation and SCADA cabinets in remote oil fields, mining sites and pipeline stations where utility mains is unstable or unavailable.
• Edge computing, micro data centres and PoP rooms that take DC feed from a centralized -48 V plant.
• Unattended environmental, meteorological and seismic monitoring stations.

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4. Complete Technical Parameters

4.1 Core Parameter Overview

Item	Technical Specification
Series	HGU-XE48 — 1U/2U rack-mount telecom inverter UPS
Capacity range	3 kVA / 5 kVA / 8 kVA / 10 kVA (single module)
Topology	High-frequency SPWM, CPU-controlled, with static AC bypass
DC input	48 Vdc nominal (operating range 45.5 – 57 Vdc)
AC bypass input	220 Vac, 50 Hz, 187 – 238 V tolerance
AC output	220 Vac ±15% pure sine wave (110 V optional), 50/60 Hz adaptive
Output frequency	50 Hz ±0.1% / 60 Hz ±0.1% (auto-sensing)
Output THD	≤3% linear load / ≤5% non-linear load
Power factor	0.8 lagging (0.7 selectable)
Inverter efficiency	≥85% (DC → AC, typical load)
Bypass transfer time	≤5 ms (typical <3 ms)
Operating temperature	-20 °C to +50 °C
Noise (1 m)	≤40 dB
Cooling	Forced-air, intelligent variable-speed fan
Protection	Over-voltage, under-voltage, overload, short-circuit, over-temperature, surge, reverse-polarity
Communication	RS-485, RS-232, optional SNMP / Web card slot
Display	LCD + status LEDs, front-panel access
Certifications	CE, TUV, IEC 62040, ISO 9001, ISO 14001, RoHS
Warranty	3-year full unit, global support

4.2 Detailed Electrical Parameters

DC Input

• Rated DC input voltage: 48 Vdc
• Operating voltage range: 45.5 V – 57 Vdc (covers float, equalize and end-of-discharge)
• Rated DC input current: 63 A (3K) / 100 A (5K) / 167 A (8K) / 210 A (10K)
• Charging voltage: 45.5 V – 57 Vdc
• Charging current: ≤10% of rated DC input
• Reverse-polarity protection on DC input

AC Bypass Input

• Rated bypass voltage: 220 Vac single-phase
• Bypass voltage tolerance: 187 V – 238 Vac (220 V -15% / +18%)
• Bypass frequency: 50 Hz, ±10 Hz synchronization range
• Rated bypass current: 13.6 A (3K) / 22.7 A (5K) / 36.4 A (8K) / 45.4 A (10K)
• Static transfer time: ≤5 ms (typical <3 ms)

AC Output

• Rated output voltage: 220 Vac (110 Vac optional)
• Output voltage tolerance: ±15%
• Rated output power: 2.4 kW (3K) / 3.5 kW (5K) / 5.5 kW (8K) / 7 kW (10K)
• Rated output current: 10.8 A (3K) / 16 A (5K) / 25.4 A (8K) / 31.8 A (10K)
• Output frequency: 50 Hz or 60 Hz, adaptive
• Frequency accuracy: ±0.1%
• Output waveform: pure sine wave
• Total harmonic distortion (THD): ≤3% linear load / ≤5% non-linear load
• Dynamic response: ≤5% voltage deviation on 0–100% load step, recovery ≤20 ms
• Overload capability: 105 – 125% for ≤30 s; 125 – 200% for ≤500 ms; auto-bypass on sustained overload
• 3× inrush load handling: ≤0.5 s

Protection Functions

• DC input under-voltage / over-voltage auto-shutdown with auto-recovery
• AC output overload and short-circuit protection with selective bypass
• Over-temperature protection with intelligent fan-speed boost
• Surge and lightning protection on AC bypass input
• Reverse-polarity protection on DC input
• Automatic transfer to bypass on internal inverter fault

Environmental & Communication

• Operating temperature: -20 °C to +50 °C
• Storage temperature: -25 °C to +55 °C
• Relative humidity: 0 – 95% RH, non-condensing
• Operating altitude: ≤2000 m full power, derated above 2000 m
• Acoustic noise: ≤40 dB at 1 m
• Dielectric strength: 1500 Vac, 1 minute (input – output – chassis)
• Communication interfaces: RS-485, RS-232
• Optional communication: SNMP / Web card via dedicated slot
• Display: LCD module (English / Chinese) with input voltage, output voltage, load percentage, battery status and fault codes
• Status indicators: mains / inverter / bypass / fault LEDs on front panel

4.3 Model Variants & Dimensions

Model	Rated Power	Output Power	DC Input Current	AC Output Current	Chassis (D × W × H, mm)	Weight (kg, approx.)
HGU-XE48-3K	3 kVA	2.4 kW	63 A	10.8 A	440 × 482 × 88	~16
HGU-XE48-5K	5 kVA	3.5 kW	100 A	16 A	440 × 482 × 88	~16
HGU-XE48-8K	8 kVA	5.5 kW	167 A	25.4 A	440 × 482 × 176	~28
HGU-XE48-10K	10 kVA	7 kW	210 A	31.8 A	440 × 482 × 176	~28

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5. Supporting Products & System Solutions

Compatible Energy Storage & Power Chain

• HGU Series VRLA front-terminal batteries (12 V, 2 V) for legacy -48 V DC plants.
• HGU-HVC high-voltage lithium battery cabinet for hybrid solar / telecom applications.
• PV Generator hybrid solar inverter and energy storage for off-grid sites.
• SLT intelligent micro power distribution cabinet for edge rack integration.
• SDS power distribution cabinet for downstream AC load protection.

Telecom-Site Integrated Power Solution

Pair the HGU-XE48 inverter UPS with HGU-Series -48 V batteries, PV Generator hybrid solar cabinet and SLT distribution to deliver a complete DC-input AC-output power chain for off-grid and bad-grid telecom sites — single-vendor sourcing from UPSBOSS, one warranty, one support hotline.

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6. Frequently Asked Questions

Q1. How is the HGU-XE48 different from a conventional online UPS?

The HGU-XE48 is a DC-to-AC inverter UPS, purpose-built for sites where the primary energy source is already 48 V DC (telecom plants, solar / wind battery banks, mobile platforms). It accepts a -48 V DC feed directly, converts it to clean 220 V pure sine wave, and adds a ≤5 ms static AC bypass for grid continuity — eliminating the AC rectifier stage of a conventional UPS and saving significant rack space. For AC-input IT-room applications, consider the HPM Modular UPS family instead.

Q2. Can the HGU-XE48 work directly with solar panels and lithium batteries?

Yes. The HGU-XE48 connects to the 48 V battery bank of any 48 V solar / wind hybrid system, including those with MPPT charge controllers, lithium battery management systems (BMS) and lead-acid strings. It runs from any 45.5 – 57 V DC source with stable voltage. For an end-to-end off-grid PV solution, pair the inverter with UPSBOSS PV Generator series.

Q3. What battery bank do you recommend?

Size the battery bank in amp-hours at the 48 V DC input current rating — for example, 63 A continuous for the 3 kVA model. UPSBOSS HGU-Series VRLA and HGU-HVC lithium batteries are pre-validated for the HGU-XE48 and ship with matched DC cables and breakers.

Q4. Can I parallel HGU-XE48 modules for higher capacity?

Yes. Up to four HGU-XE48 modules of mixed capacity (e.g. 3K + 5K + 8K + 10K) can be paralleled in N+1 redundant configuration to build non-equal-capacity strings from 3 kVA up to 40 kVA. Contact UPSBOSS engineering for the parallel-kit datasheet and commissioning guide.

Q5. How fast is the AC-bypass transfer?

Static transfer time is ≤5 ms (typical <3 ms), well inside the ride-through window of IT equipment, telecom baseband units and industrial PLCs. Most sensitive loads will not register an event.

Q6. Is the LCD interface bilingual and easy to use in the field?

Yes. The LCD supports English and Chinese with parameter query, fault history, output-voltage adjustment and battery-test functions. Status LEDs on the front panel give an at-a-glance health check for tower-top and remote-cabinet service.

Q7. What global certifications does the HGU-XE48 carry?

CE, TUV, IEC 62040, ISO 9001, ISO 14001 and RoHS, plus country-specific marks on request. The product is qualified for export to North America, the EU, the GCC, Africa and most Asia-Pacific markets.

Q8. What warranty and after-sales support do you offer?

3-year full-unit warranty, optional 5-year extended coverage, with global regional spares, factory-trained local engineers and 24/7 multilingual technical support. OEM / ODM branding, colour and firmware customization are available for volume orders.

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7. Download & Global Service Support

Downloadable Resources

• HGU-XE48 Series Telecom Inverter UPS — English Datasheet (PDF)
• HGU-XE48 Installation & Commissioning Manual (PDF)
• HGU-XE48 RS-485 / Modbus Communication Protocol (PDF)

Global After-Sales Guarantee

UPSBOSS delivers the HGU-XE48 with global logistics and field-service coverage: regional spares warehouses, factory-trained local engineers, 24/7 multilingual technical support hotline and predictable preventive-maintenance schedules. OEM / ODM services and custom firmware / branding are available for qualified partners and volume orders. Contact UPSBOSS engineering for sizing, parallel configuration, battery matching and project quotation.