Online Double Conversion Modular UPS
20kVA – 200kVA

The Dalton UPS M33 Series Modular UPS covers 20kVA – 200kVA capacity in a single frame and delivers the best combination of reliability, functionality and availability at a competitive price.

Designed for data centers, computer systems and critical applications, this innovative and reliable power system commits to meet market requirements.

– Modular design with N+X redundancy
– Online hot swapping, by-pass and power module feature
– Full DSP control of high stability, reliability and safety- Excellent input performances for complete compatibility with input PF of 99% and wide range of voltage
– Battery cold start, UPS can be powered on from the battery without utility


Model MR60/20 MR200/20
Rating Power 20 - 400kVA 20 - 60kVA
Power module type TPM20 (20kVA/18kW)
Input Input system 3 Phases + N & earth ground
Voltage range 380V/400V/415V (line to line)
Power factor > 0.99
Frequency 40Hz 07 ~Hz
Output Output system 3 Phases + N & earth ground
Rated voltage 380V/400V/415V
Power factor 0.9
Voltage precision ±2%
Voltage distortion THD < 1.5% (linear load ),
THD < 6% (none linear load)
Output waveform Pure Sine Wave
Output frequency 50Hz / 60Hz
Inverter overload capacity
(Utility power, 25oC)
110% for 1 hour; 125% for 10 minutes ;150% for 1 minute; >150% for 200ms
Transfer time 0ms
Crest factor 3:1
Battery Batteries voltage ± 240 VDC for 40 batteries (selectable battery number 36-44)
Battery Type Sealed maintenance-free lead –acid battery / Gel Battery / NiCd
Backup Time (25℃) Full load ≥ 5min (Standard)
Battery quantity
System Parallel (cabinet) 6 3 2 0
System efficiency Normal mode: 95%; ECO mode: 98%;
Battery mode: 95%
Display LCD + LED, touch screen + keyboard
IP class IP20
Interface (communication port) Standard: RS232,RS485, Dry contacts, EPO / Optional: SNMP card
Operation/storage temperature 0o- 40°C /40o-70oC
Relative humidity 0oC95% (non-condensing)
Noise 55dB (1 meter away)
L*W*H (mm) 3-Slot cabinet:1100x900x600; 6-Slot cabinet: 1600x900x600;10
-Slot cabinet: 2000x900x600
3-Slot cabinet:2000x600x1020
Weight (kg) 3-Slot cabinet:120; 6- Slot cabinet:151;10-Slot cabinet:182 3-Slot cabinet:205