KR33 Series
The KR33 Series residential products from the Rack series have been specially designed for residential applications by Sunred. It has multiple battery modules, and each module has an integrated smart BMS, which offers great advantages in terms of safety, life cycle, energy density, and temperature range.
Model: KR33 Series
INPUT parameters
Voltage (Vac): L-L: 228-475 (323-475 at full load)
Frequency (Hz): 40-70
Power factor: ≥0.99
THDi: ≤3% (full resistive load)
Phase: 3W+N+PE
BYPASS parameter
Voltage (Vac): ±10%/±15%/±20% (default ±20%)
Frequency (Hz): ±5%/±10% (default ±10%)
Overload: 124%: long term; 150%: 10 min; 170%: 1 min; above 170% 10 s
OUTPUT Parameters
Voltage (Vac): L-L: 380/400/415±1%
Frequency (Hz): 50/60±0.1 (battery mode)
Power factor: 1.0/ 0.9 (optional)
THDv: ≤1% (total resistive load)
AC/AC efficiency (max.): 96.5%
Overload: 105%: long term; 110%: 60 min; 125%: 10 min; 150%: 1 min; 170% 1 s; above 170% 200 ms
Transfer time (ms): 0 (mains mode - battery mode), ≤1 (mains mode - bypass mode)
Crush factor: 3:1
Battery parameters
Battery type: lead-acid/lithium-ion S3 batteries
Voltage (Vac): 480 (384-528, 456-528 at maximum load) // 528 (384-576, 480-576 at maximum load)
Charging current (A): 25-100 25-200
General parameters
Communication: RS232/RS485 Dry contact. Optional: SNMP card
Screen: 7" touch screen
Noise (dB): <75
Working temperature (°C): -5~40
Altitude (m): 2000
Relative humidity: 0 ~ 95%, non-condensing
Protection rating: IP20
Agency/Certification/Compliance: EN IEC 62040-1, EN IEC 62040-2
Dimensions (W×D×H) (mm): 1000×900×1950 // 1400×900×1950 // 1900×900×1950 // 3000×900×1950
Weight (kg): 700 // 1050 // 1400 // 2350
Advanced Technology
● Separate internal air duct without damaging printed circuit boards and other sensitive internal components
● Power input, avoiding impact on the input network
● Supports parallel mode up to 9.6 MVA
● Redundant auxiliary power supply design, improving system reliability
Green Energy
● High AC/DC efficiency of up to 96.5%, reduces heat dissipation and limits energy consumption costs
● Wise ECO mode efficiency of up to 98%
● Low THDi <3%, reduces power grid pollution
● Low noise <75 dB, reduces noise pollution
Flexible Design
● Common battery bank, saves space
● Self-charging test function, saves costs on charging rental and energy loss
● Frequency converter mode, adapts to different electrical networks
● Programmable dry contact, meets different functional requirements
