DALTON UPS U33 SERIES

U31 Plus Smart Online Double Conversion UPS
Three Phase 3:1 Dalton U31 Plus
10KVA – 40KVA

The On-Line- Transformer Based Series is an uninterruptible power supply incorporating 

double-converter technology. Medical  provides perfect protection specifically for strict load. 

The double-converter principle eliminates all mains power disturbances. 

In the event of power failure, the maintenance-free batteries power the inverter. 

Designed with the Galvanic Isolation  Transformer for output 

UPS offers the greatest degree of availability in power protection and provides 

continuous high-quality AC power to connect strict load,.

– Transformer Based UPS Technology
– Output Short Circuit and Overload Protection
– Cold Start Function
– Optional SNMP Communication Port
– Maintenance Bypass Switch

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Specifications

384VDC
Model
U31 Plus
10K
U31 Plus
15K
 U31 Plus
20K		 U31 Plus
20K
U31 Plus 
30K
U31 Plus
40K
Power Rating 10KVA/8KW-15KVA/12KW 20KVA/16KW 30KVA/24KW 40KVA/32KW
Input Input system 3 Phases + N & earth ground
Voltage range 285~485VAC(full load)
Power factor ≥0.99
Frequency 40~60Hz (50Hz ) /50~70Hz (60Hz)
Output Output system 3 Phases + N & earth ground
Rated voltage 220/230/240VAC / 
Power factor1 0.8
Voltage precision ±2%
Voltage distortion Linear≤2% on R 100% loading (line)
Output waveform Pure Sine Wave
Output frequency Normal
mode		 (1)synchronized 46~54Hz
(2)50Hz(line 40~46 or 54~60Hz)
Battery
mode		 50Hz,60Hz
Inverter overload capacity
(Utility power, 25oC)		 105% - 125% transfers to bypass mode after 1 minutes; 125% ± 5%< load ≤ 150% ± 5% transfers to bypass mode after
30second
Transfer time 0ms
Crest factor 3:1
DISPLAY/ INTER- FACE LCD Display AC/ DC voltages; KVA/ KW; Frequency; Temperature; Battery & load level
LED Status Indicator Utility power; Battery discharge; Inverter On
External Communication RS232 / RJ11 / USB Card / Optional Intelligent Slot
Control 3 control push button for POWER ON / POWER OFF / FUNCTION KEY
Communication software Windows XP/ 2003 and later version; Linux; Unix
Optional SNMP Card/ Dry Contact AS400 Card/ CMC Card/ RS485 Card/ EMD Monitoring Device
Battery Batteries voltage
+/-192VDC
 384VDC 384VDC 384VDC
Battery Type Sealed maintenance-free lead –acid battery / Gel Battery / NiCd
Backup Time (25oC) Full load ≥ 5min (Standard)
Battery quantity 32*7Ah  32*9Ah 32*18Ah 32*20Ah
Charge current 2/4/6/8A 4/6/8/10/12A 4/6/8/10/12A 4/6/8/10/12A 2/4/6/8/10/12/14/16A
General Temperature 0℃-40℃
Humidity <95%
Altitude <1000m
Efficiency Line: ≥ 90%
Inputs ECO/EPO
Noise (dB) ≤ 65dB
Protection IP20
L*W*H (mm) 556X405X795 599x405x807 650x405x815                     -    650x405x815  -  660x405x820
Weight (kg) 117 120 147 147 195 278