Low-Voltage Modular UPS

50 kW – 4.8 MW · three-in / three-out · LV

Scalable three-phase modular UPS with dual-DSP digital control. The 50 kW module expands from 50 to 600 kVA/kW in a single cabinet and to 2.4 MW across four in parallel; the 100 kW module reaches 4.8 MW. The power, bypass and control modules are all hot-swappable. Available outdoor-rated and containerized.

True on-line double conversion with dual-DSP fully digital control
Output power factor 1.0; on-line efficiency 96 %, up to 99 % in ECO mode
50 kW and 100 kW modules scale to 2.4 MW or 4.8 MW with four cabinets in parallel
Hot-swappable power, bypass and control modules
Supports lead-acid and lithium iron phosphate batteries, 30-46 cells
Holds 50 % load with one fan failed and 30 % with two failed

Request a quote Download brochure

Overview

The Low-Voltage UPS is a new generation of high-end modular UPS systems with three inputs and three outputs. It is a scalable three-phase system with DSP technology, providing true on-line double conversion power protection.

The 50 kW module's power and redundancy can expand vertically from 50 to 600 kVA/600 kW in a single cabinet, and up to four cabinets can operate in parallel, reaching 2.4 MW. The 100 kW module's power and redundancy can expand from 400 to 1200 kVA/kW in one cabinet, with four cabinets in parallel increasing capacity to 4.8 MW.

The modular design allows hot-swappable operation of all modules (power, bypass, and control). The UPS integrates an AC/DC rectifier, a DC/DC converter for the battery pack, and a DC/AC inverter, with bypass and maintenance bypass circuits providing alternative power paths during overload or maintenance.

Rated power: 50 kW – 4.8 MW
Input voltage: 480 V · 440 V
Output voltage: 480 V · 440 V
Battery: Lead-acid · Lithium-ion
Redundancy: Parallel

Specifications

Electrical

Topology: Online double conversion, three-phase, DSP digital control
Module ratings: 50 kW and 100 kW
Single cabinet capacity (50 kW module): 50 to 600 kVA/kW
Single cabinet capacity (100 kW module): 400 to 1200 kVA/kW
Maximum parallel: Up to four cabinets: 2.4 MW (50 kW module), 4.8 MW (100 kW module)
Input / output wiring: 3 Ph + N + PE
Rated input / output voltage: 480 / 440 Vac
Input voltage range: 384 to 528 Vac (no derating); 288 to 384 Vac (linear derating between 60 % and 100 % load)
Input frequency range: 40 to 70 Hz
Input power factor: ≥0.99
Input current distortion: ≤3 %
Output power factor: 1
Output voltage precision: ±1 %
Output voltage distortion: ≤1 % (resistive load); ≤3 % (non-resistive load)
Crest factor: 3:1
Efficiency: Online mode 96 %; ECO mode 99 %
Switching time: 0 ms

Battery / Energy

Battery types: Lead-acid or lithium iron phosphate
Battery cells: 30 to 46 cells supported (even number 30 to 46 pcs of 12 V batteries settable)
Battery voltage: ±240 Vdc (±180 to ±276 Vdc settable), 40 pcs 12 V batteries
Battery start: Can start directly from battery when mains power is unavailable

Overload & protection

Inverter overload capacity: 105-110 % load: bypass in 60 min; 110-125 %: 10 min; 125-150 %: 1 min; above 150 %: 200 ms
Bypass overload capacity: Load ≤125 % long term; >200 % load for 100 ms
Protections: Output short-circuit, output overload, over-temperature, battery low voltage, output over/under voltage, fan failure
Bypass: Standard maintenance bypass switch

Physical

Cabinet dimensions (W x D x H), 200 / 300 kVA models: 600 × 850 × 2000 mm
Cabinet dimensions (W x D x H), 400 / 500 kVA models: 1200 × 850 × 2000 mm
Cabinet dimensions (W x D x H), 600 kVA model: 1400 × 850 × 2000 mm
Cabinet net weight (200 / 300 / 400 / 500 / 600 kVA): 230 / 240 / 410 / 450 / 600 kg
Module dimensions (W x D x H): 440 × 620 × 130 mm
Module net weight: 32 kg
Footprint: 300 kVA system occupies 0.5 m²
Color: Black

Environmental

Operating temperature: 0 to 40 °C
Storage temperature: -25 to 55 °C (without battery)
Relative humidity: 0 to 95 % (non-condensing)
Altitude: ≤1000 m; above 1000 m derate 1 % for each additional 100 m
Protection level: IP20
Noise at 1 m: ≤65 dB (200 / 300 kVA models); ≤68 dB (400 / 500 / 600 kVA models)

Control & communications

Display: 7-inch LCD touch screen
Standard interfaces: RS485, RS485/CAN (BMS), NET (with SNMP function), input/output dry contacts, EPO
Optional: Parallel kits, LBS components, WiFi card, 4G card, battery temperature sensor, EMD environment detector
Frequency conversion: 50 Hz to 60 Hz supported