
Dalton UPS B33
- Efficiency: Line mode ≥ 96%, ECO mode ≥ 98%
- Transfer Time: 0 ms
- Total Harmonic Distortion (THDV): ≤ 2% (Resistive load); ≤ 5% (non-linear load)
- Max. Parallel Numbers: 6
- Protections: Short-circuit, overload, over temperature, over voltage, under voltage, battery low voltage and fan failure
Technical Specifications
Input
- Rated Voltage: 380 V / 400 V / 415 VAC
- Voltage Range:
- 346 V ~ 456 V (full load)
- 304 V ~ 346 V (Voltage rating 10%)
- Rated Frequency: 50 / 60 Hz
- Frequency Range: 50 / 60 Hz ± 5 Hz
- Power Factor: ≥ 0.99
- Total Harmonic Distortion (THDI): ≤ 3%
- Input Current-Limiting: 1.1 times of rated current (0.1 ~ 1.1 settable)
- Rectifier Delay Start: 10 s (1 ~ 300 settable)
Bypass
- Bypass Voltage Range: ± 20% (settable)
Output (Inverter)
- Rated Voltage: 380 V / 400 V / 415 VAC
- Voltage Regulation: ± 1%
- Frequency: Synchronized with utility in mains mode; 50 / 60 Hz ± 0.1% in battery mode
- Waveform: Pure sinewave
- Crest Factor: 3:1
- Total Harmonic Distortion (THDV): ≤ 2% (Resistive load); ≤ 5% (non-linear load)
- Transfer Time: 0 ms
- Inverter Overload Capability:
- Load ≤ 105%: long time work
- 105% < load ≤ 110%: transfer to bypass in 60 min
- 110% < load ≤ 125%: transfer to bypass in 10 min
- 125% < load ≤ 150%: transfer to bypass in 1 min
- 150% < load ≤ 200%: transfer to bypass in 200 ms
- 200% < load: inverter off (UPS shutdown) in 100 ms and transfer to bypass output
- Slight Adjustment of Inverter Output Voltage: ± 5 V
Battery
- DC Voltage:
- 10KVA To 40KVA: 240 VDC
- 40KVA To 100KVA: 480 VDC
- Number of Battery:
- 10KVA To 20KVA: 40pcs 12V 9Ah
- 30KVA, 40KVA: 60pcs 12V 9Ah
- 60KVA To 100KVA: As Installed
- Charging Current: Charging rate (settable) × battery capacity (settable) × number of battery group (settable)
- Battery State Display: Battery remaining capacity and backup time
- Battery Self Test: Settable periodic self-test; manually configurable test time and voltage
System Performance
- Efficiency: Line mode ≥ 96%, ECO mode ≥ 98%
- Max. Parallel Numbers: 6
- Protections: Short-circuit, overload, over temperature, over voltage, under voltage, battery low voltage and fan failure
Communication & Display
- Communications: RS232 / RS485 / dry contacts (standard), SNMP (optional)
- IP Rating: IP 20
- Display: 4.3 inches LCD touch screen (Optional)
Environmental
- Operating Temperature: 0 ~ 40℃
- Storage Temperature: – 25℃ ~ 55℃ (without battery)
- Humidity: 0 ~ 95% (non-condensing)
- Noise Level at 1 m: < 45 dB (< 55dB)



