Transformer-free UPS KR33 Series (10-200kVA)

3 Phase Online Transformer-free UPS (10-200kVA)

The KEHUA KR33 series 3-Phase in, 3-Phase out UPS uses advanced 3 level inverter technology and digital technology for full interconnection and has advantages such high efficiency, high power density and occupies only a small amount of floor space. It provides safe, stable, clean, and environmentally friendly power to loads and can provide safe and reliable comprehensive protection to data centers, IT server rooms, precision instruments and others.

Key Features
Technical Data
Related Solutions

Creating an Eco-energy Internet

High power density, 200KVA and only occupies 0.54 square meters of area; saves a lot of surface space in the client’s server room while having an environmentally friendly design. It uses the latest IGBT rectifying technology and its input power factor approaches unit power factor and improves energy efficiency to up to 95%. With a power factor of 1, significant savings are made on energy consumption and equipment investments costs and cost effectiveness increases

Lower Total Cost of Ownership

The system has a touch screen with powerful functions, dual button on/off switching, user-friendly interface, easy to operate protection functions and warning alarms. It also has complete input over voltage, input under voltage, over load, short circuit, and component failure warning to reduce client operation and maintenance costs and has smart waveform record for failure that can record key simulations and digital signals a few cycles before and after a fault occurs to make it much easier for equipment maintenance and troubleshooting. This effectively improves system maintenance time efficiency. The 4D fan design further improves overall system efficiency and makes operation and maintenance management more convenient and improves overall operation reliability

Smarter Operation and Maintenance Management

Full digital interconnection, advanced dual DSP control technology, fast fault self-diagnosis, full redundancy coverage, no more single point of failure, and good system compatibility ensures reliable power supply to the load from an ultra-wide range of input from the power grid, while the smart generator control enables flexible adaptation to various complex power grid environments

MODEL	KR3310S/ KR3310	KR3320S/ KR3320	KR3330S/ KR3330	KR3340S/ KR3340	KR3350	KR3360	KR3380	KR33100	KR33120	KR33160	KR33200
INPUT
Voltage (Vac)	380/400/415（138~485 L-L)
Frequency (Hz)	40~70
Bypass Voltage (Vac)	380/400/415: -20%~+15%
Power Factor	≥0.99
THDi	≤3%
Phase	3φ4W+PE
OUTPUT
Capacity (kVA)	10	20	30	40	50	60	80	100	120	160	200
Power Factor	1
Voltage (Vac)	L－N: 220/230/240±1% L－L: 380/400/415±1%
Frequency (Hz)	50/60±0.1 (battery mode)
Phase	3φ4W+PE
Unbalance 3-phase voltage stabilization with full load	≤2%
Waveform	Pure sine wave, THD<1% at linear
Transfer Time (ms)	0
Efficiency	up to 96％
Overload	105%~115% load for 60mins; 116%~130% load for 10mins; 131%~150% load for 1min; >150% load for 200ms
BATTERY
Battery Voltage (Vdc)	±192/±216（±180/±204/±216/±228/±240 settable for long backup type）
BATT Type	32×7AH/ 12V (34/36 optional)/ External	36×9AH/ 12V (32/34 optional)/ External	64×9AH/ 12V (68/72 optional)/ External	72×9AH/ 12V / External	External
Charging Current (A)	1-10 settable				1-20 settable			1-30 settable		1-40 settable	1-50 settable
OTHER
Communication Interface	RS485, MODBUS, dry contacts (RS232, SNMP, expend dry contact card are optional in slot)
Display	Touch screen+LED
Alarm	AC input abnormal, low battery, overload, failure
Protection	Output short-circuit, overload, over temperature, battery low voltage, output over/low voltage
Noise (dB)	<65
Workin Temperature (℃)	0~40
Relative Humidity	0~95%, no condensation
Dimension (W×D×H)(mm)	320×840×1030 / 320×840×867		320×840×1400 / 320×840×867		450×840×967		450×840×1400			600×900×1600
Weight (kg)	240 / 120	250 / 120	350 / 120	370 / 120	160		210	242	242	320	350