RED3350H-E UPS, 50 kVA / 50 kW – Extended Runtime Model
50 kVA / 50 kW three-phase double-conversion online tower UPS for UK and IEC markets, supplied without batteries for pairing with external battery cabinets sized to the required autonomy. Efficiency up to 95.5 % (up to 99 % in ECO mode); part of the RED3300-E Series.
- Three-level inverter; efficiency up to 95.5 %, up to 99 % in ECO mode
- Output power factor 1.0; accepts 100 % unbalanced load
- Long-run build for external VRLA or Li-ion, 360–600 Vdc; charger up to 20 A
- Wide input range 138–485 Vac; input PF ≥ 0.99, THDi ≤ 3 %
- Parallel expansion to 6 units with shared battery option; LBS
- Power Walk-In soft start reduces the generator rating required
Overview
The RED3350H-E is the 50 kVA long-run (H) model in the RED3300-E Series of three-phase in / three-phase out, true double-conversion online UPS, rated at 380/400/415 Vac for the UK and other IEC markets.
The long-run build is supplied without batteries and is paired with external VRLA or lithium-ion batteries (360–600 Vdc) sized to the autonomy required.
Battery autonomy, string configuration and battery cabinet selection are sized per project — contact us with your load and runtime requirements. Figures are typical values for reference only; specifications are subject to change without prior notice.
- Rated power
- 50 kW
- Input voltage
- 400 V
- Output voltage
- 400 V
- Battery
- VRLA · Lithium-ion
- Redundancy
- Parallel · N+1
- Market
- United Kingdom · Global
Specifications
Model
- Model code
- RED3350H-E
- Build
- Long-run (H) — supplied without battery
- Rated power
- 50 kVA / 50 kW
- Dimensions (W × D × H)
- 250 × 828 × 868 mm
- Weight
- 80 kg
- Noise
- < 55 dB
- Charging current, max.
- 20 A
Electrical
- Topology
- Online double conversion, DSP control, three-level inverter
- Nominal input / output voltage
- 380/400/415 Vac, 3-phase + N + PE
- Input voltage range
- 138–305 Vac at 40 % load; 305–485 Vac at 100 % load (phase voltage 80–280 Vac)
- Input power factor
- ≥ 0.99
- Input current distortion (THDi)
- ≤ 3 % (linear load)
- Output power factor
- 1.0 (100 % unbalanced load)
- Voltage regulation
- ±1 %
- Output voltage distortion (THDv)
- ≤ 2 % linear load; ≤ 4 % non-linear load
- Output frequency
- Line mode: synchronised with input (50/60 Hz ±0.1 when input exceeds ±10 %); battery mode: 50/60 Hz ±0.2 %
- Crest factor
- 3:1
- Bypass frequency range
- 50/60 Hz ±10 %
- Overload — inverter mode
- ≤ 110 % 60 min; ≤ 125 % 10 min; ≤ 150 % 1 min; > 150 % 1.2 s inverter shutdown
- Overload — bypass mode
- 135 % long term at 30 °C; 125 % long term at 40 °C; > 1000 % for 100 ms
- Efficiency
- AC mode up to 95.5 %; ECO mode up to 99 %
- Parallel
- Up to 6 units, with shared battery option
Battery
- Battery type
- VRLA or lithium-ion, external (not included)
- Battery voltage
- 360–600 Vdc
- Charging current, max.
- 20 A
- Shared battery
- Shared battery option in parallel systems
Environmental
- Operating temperature
- 0–40 °C
- Storage temperature
- −25 to 55 °C (without battery)
- Relative humidity
- 0–95 % (non-condensing)
- Altitude
- < 1000 m ASL; derating required above 1000 m
Communications & features
- Interfaces
- USB, RS-485, RS-232, SNMP and dry-contact card
- Functions
- ECO mode, Power Walk-In soft start, LBS (load bus synchronisation) for dual-bus systems
- Generator
- Generator compatible; Power Walk-In reduces inrush and the generator rating required
Standards
- Safety
- IEC/EN 62040-1, IEC/EN 62477-1
- EMC
- IEC/EN 62040-2 (IEC 61000-2-2, -4-2, -4-3, -4-4, -4-5, -4-6, -4-8, -4-11)
- Performance
- IEC 62040-3:2021, EN IEC 62040-3:2021
Certification & warranty
Certification
Designed and tested to IEC/EN 62040-1 (safety), IEC/EN 62040-2 (EMC), IEC/EN 62040-3 (performance) and IEC/EN 62477-1. EMC certificates of conformity (EMC Directive 2014/30/EU; EN IEC 62040-2:2018, EN 61000-3-12:2011, EN 61000-3-11:2000) cover the 10–20 kVA models (certificate ES201225018E) and the 30–40 kVA models (certificate ES201225020E). Copies are available on request.
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