At Circuit Energy, we offer a comprehensive range of commercial and industrial UPS systems, with capacities from 10kVA to 1200kVA. As the official representative of the Kehua as a leading power solution provider in the world, our solutions feature advanced protection, fast transfer times, and scalable options to ensure your critical operations remain uninterrupted. Explore our UPS offerings to find the ideal solution for your business needs.

Commercial UPS

MR33 Series 50-600kVA

The Kehua MR33 series modularized 3-Phase in, 3-Phase out UPS utilizes advanced 3 level inverter technology, a more reliable redundancy design from the entire system down to the components, and digital technology interconnection. It has the advantages of high efficiency, high power density, easy scaling, scaling on demand, and occupies only a small amount of floor area and provides safe, reliable, and clear environmentally friendly power to loads.

Advanced Technology

● Online double conversion
● Battery cold start function
● Advanced power module sleep mode
● Dual system control card
● Self-load test function
● Redundant design
● Compatible with lithium battery

Excellent Flexibility

● Allow 100% three phase unbalance load
● Intelligent battery management
● Parallel expansion up to 8 units
● Fault Trace Management (FTM)
● Programmable dry contacts
● Fault Trace Management (Black box)
● Bypass power source N+1

Green Power

● Efficiency up to 96%
● Intelligent fan speed control
● ECO mode and EPO function

Technical Specifications

MODEL		MR33120	MR33200	MR33300	MR33400	MR33500	MR33600
MODEL		Power Module
Capacity (kW)		30	50
INPUT
Rated Voltage (Vac)		380/400/415
Voltage Range (Vac)		L:L 138~485
Input Frequency (Hz)		40~70
Bypass Voltage Range (Vac)		-15% (-20%/-30% optional) ~ +15%(+10%/+20% optional)
Power Factor		≥0.99
THDi		3% (linear load)
Phase		3Φ4W+PE
Battery Voltage (Vdc)		±192 (±168~±276 settable)	±192 (±180~±276 settable)	±240 (±168~±276 settable)
Charging Current (A)		N×10 Maximum (N: the number of power modules)
OUTPUT
Capacity (kVA)		120	200	300	400	500	600
Power Factor		1
Phase		3Φ4W+PE
Waveform		Sine wave
Voltage (Vac)		L-L: 380, 400, 415 ±1%
Frequency (Hz)		50/60 ±0.2% (battery mode)
Three Phase Difference		≤1 degree
THDv		≤1% (linear load, full load), ≤4% (nonlinear load, full load)
Static Bypass Transfer Time		0
Max. System Efficiency		97%
Parallel Mode		Advanced no-master-slave parallel technology, N+1 redundancy
Overload Capacity		106-110% load for 60 mins, 111%-130% load for 10 mins, 131%-150% load for 1 min, 151%-200% load for 200ms
GENERAL
Working Temperature (°C)		-5~40
Storage Temperature (°C)		-40~70
Relative Humidity		0%~95%, no condensing
Battery Type		Lead-acid batteries and lithium iron phosphate batteries
Communication Interface		RS485, RS232, dry contact (SNMP optional)
Noise (dB)		< 65	< 70
Dimension (W×D×H) (mm)		600×860×2000			1200×860×2000
Weight (kg)	Cabinet	180	224	236	427
	Bypass Module	17	19	25	31
	Power Module	27	33

Commercial UPS

MR33 Series 600-1200kVA

KEHUA@MR series 3-in 3-out UPS, adopts advanced 3-level inverter technology and reliable redundancy design from components to the whole machine. It has the advantages of high efficiency, high power density, easy expansion, capacity expansion as required and small occupied area, and provides reliable, stable and pure green power for loads.

High Efficiency

● The efficiency of the whole machine is as high as 97%, which greatly saves energy consumption (UPS heat consumption and air conditioning energy consumption) and reduces operating costs.
● The output power factor is 1.0 by default, with the same equipment input cost, greater active output and higher cost performance, which meets the requirements of different application scenarios for high output power factor.
● When the quality of mains supply is high, the ECO mode can be used to supply power to the load, the efficiency of the whole machine is as high as 99%, and the energy saving benefit is remarkable

User-friendly Interface

● Innovative application of data intelligent acquisition technology enables check of all product data in the parallel system on the control panel of any product.
● Large-size color touch screen design and humanized operation
● Double key combination of on and off, double protection of soft and hard
● EPO button with protective cover for emergency shut-off, misoperation prevention design, safety double upgrade
● Man-machine interface is friendly, close to customers' habits, and the software is rich in functions, which is convenient for users to read information and operate.
● Support asset management of vulnerable devices and spare parts

Green Power

● The latest IGBT rectification technology is adopted to realize ultra- low input current harmonics, which eliminates the pollution to the power grid, reduces the cost of power factor compensation and harmonic control, and reduces the cable loss. It protects both the load and the power grid.
● The input power factor is greater than 0.99, which improves the utilization rate of electric energy, reduces the distribution loss at the front end of UPS and reduces the input cost of customers.

Technical Specifications

Model		MR33400	MR33500	MR33600	MR33800	MR331000	MR331200	MR331250
100kW System Capacity (kVA/kW)		100~400	100-500	100-600	100-800	100-1000	100-1200	/
125kW System Capacity (kVA/kW)		/	125-500	125-600	125-800	125-1000	/	125-1250
Input
Voltage Range (Vac)		138~485 (324~485 no derating, 138~323 linear derating)
Frequency Range (Hz)		40~70
Power Factor		>0.99
Phase		3Ph+N+PE/3Ph+PE (optional)
Bypass Synchronization Tracking Range (Hz)		50/60 ±4
Bypass Input Voltage Range (Vac)		304~438
Battery Voltage (VDC)		±180~±300
Output
Power Factor		1.0
Phase		3Ph+N+PE
Voltage (Vac)		380/400/415 ±1%
Frequency (Hz)		50/60 ±0.1%
THDv		THD<1% (linear load), THD<3% (nonlinear load)
Max. Efficiency		97%
Overload Capacity		106-110% load for 60 minutes, 111%-125% load for 10 minutes, 126%-150% load for 1 minute, 151%-200% load change to bypass immediately
Static Bypass Transfer Time		0
Cool Start		Yes
Other
Battery Type		Lead-acid batteries and lithium iron phosphate batteries
Battery Pack Sharing Function		Yes
Communication Interface		RS232, RS485, Dry contact, MODBUS, SNMP (optional)
Alarm		Input abnormal, battery low-voltage, output overload, UPS failure
Protection		Short-circuit, overload, over-temperature, battery under voltage, input under voltage
Noise (dB)		<70
Operating Temperature (ºC)		0-40
Relative Humidity		0~95%, no condensation
Routing Mode		Upper and lower incoming lines				Upper incoming line
Dimension (W×D×H) (mm)		1200×1000×2000			1400×1000×2000	1800×1000×2000
Weight (kg)	Cabinet	480	506		580	650	740
	Bypass Module	32	50		60	80
	100kW Module	55
	125kW Module	60

Industrial UPS

FR-UK33 Series 10-600kVA

3 Phase Online Transformer-based UPS (10-600kVA)
The KEHUA FR-UK series medium/high power UPS uses the industry’s tried and tested phase-controlled rectification technology and power components and inverter module with excellent performance, as well as smart multi-mode battery management technology and a variety of power management software along with a reinforced combination cabinet structure to provide high quality and highly reliable uninterruptible sine wave power to loads and is cost effective and has a good user base.

Advanced Technology

● Online double conversion
● Battery cold start function
● Advanced power module sleep mode
● Online double conversion
● Wide input voltage range
● IGBT inverter and output isolation transformer
● Advanced battery charging management
● Advanced no-master-slave parallel technology (optional)
● Dual system control card
● Self-load test function
● Redundant design
● Compatible with lithium battery

Excellent Flexibility

● Allow 100% three phase unbalance loads
● Intelligent RS232/RS485 & DB9 dry contact communication port
● DC cold start function (optional)
● Intelligent battery monitor system-MMBM (optional)
● MODBUS & SNMP adapter (optional)

Green Power

● High reliability DSP control
● Intelligent fan speed control
● Full protection function
● ECO mode and EPO function
● Efficiency 98% at ECO-mode
● 10,000 events logs
● Battery self-test function
● 12 Pulse rectifier (optional)
● Bypass isolation transformer (optional)

Technical Specifications

Responsive Table Example

MODEL

FR-UK 3310

FR-UK 3320

FR-UK 3330

FR-UK 3340

FR-UK 3360

FR-UK 3380

FR-UK 33100

FR-UK 33120

FR-UK 33160

FR-UK 33200

FR-UK 33250

FR-UK 33300

FR-UK 33400

FR-UK 33500-12P

FR-UK 33600-1

Voltage (Vac)

100

120

160

200

250

300

400

500

600

INPUT

Voltage (Vac)

L-L: 285-475 (323-475 at full load)

Frequency (Hz)

40-70

Power Factor

≥0.99

Phase

3W+N+PE

BYPASS

Voltage (Vac)

±10%/±15%/±20% (default ±20%)

Frequency (Hz)

±5%/±10% (default ±10%)

Overload

130%: long run, 170%: 10 min, 200%: 1 min, above 170%: 200ms

OUTPUT

Voltage (Vac)

L-L: 380/400/415 ±1%

Frequency (Hz)

50/60 ±0.1% (battery mode)

Power Factor

0.9

THDv

≤2% (resistive full load)

AC/AC Efficiency (Max.)

94%

Overload

124%: long run, 125%: 10 min, 150%: 1 min, 170%: 200ms

Transfer Time (ms)

0 (Mains mode-Battery mode), ≤1 (Inverter mode-Bypass mode)

Crest Factor

3:1

BATTERY

Battery Type

Lead-acid/S³ Lithium-ion batteries

Voltage (Vdc)

348 (360 settable)

384 (348/360/372 settable)

Charging Current (A)

10~40

10-100

GENERAL

Communication

RS485, Dry contact, Optional: SNMP card

Display

7" touch screen

Noise (dB)

<65

<70

Working Temperature (°C)

-5~40

Altitude (m)

2000

Relative Humidity

0 ~ 95%, no condensation

Protection Grade

IP20

Agency/ Certification/ Conformance

EN IEC 62040-1, EN IEC 62040-2, EN IEC 62040-3

Industrial UPS

KR33 Series 300-1200kVA

·  Computer room
·  Data center
·  Precision instrument
·  Commercial facility
·  Intelligent equipment
·  Telecom system
·  Industry

Advanced Technology

● Three level inverter technology
● Support parallel mode up to 9.6MVA
● External input/output transformer connection

Flexible Design

● Common battery bank sharing in parallel system
● Multiple communication interface
● 3-stage battery charging mode
● Self-load test function without load enables onsite commission
● Common bypass cabinet
● External input and output isolation transformer

Green Power

● High AC/AC efficiency up to 97%
● ECO mode efficiency up to 99%
● High power factor up to 1
● Low THDi ≤2%

Technical Specifications

UPS Models Comparison

MODEL	KR33300	KR33400	KR33500	KR33600	KR33800	KR331000	KR331200
Capacity (kVA)	300	400	500	600	800	1000	1200
INPUT
Voltage (Vac)	L-L: 228-475 (323-475 at full load)
Frequency (Hz)	40-70
Power Factor	≥0.99
THDi	≤3% (resistive full load)
Phase	3W+N+PE
BYPASS
Voltage (Vac)	±10%/±15%/±20% (default ±20%)
Frequency (Hz)	±5%/±10% (default ±10%)
Overload	124%: long run, 150%:10min, 170%: 1min, above 170% 10s
OUTPUT
Voltage (Vac)	L-L: 380/400/415±1%
Frequency (Hz)	50/60±0.1 (battery mode)
Power Factor	1.0
THDv	≤1% (resistive full load)
AC/AC Efficiency (Max.)	97%
Overload	105%: long run, 110%: 60min, 125%: 10min, 150%: 1min, above 150% 1s
Transfer Time (ms)	0 (Mains mode-Battery mode), ≤1 (Inverter mode-Bypass mode)
Crest Factor	3:1
BATTERY
Battery Type	Lead-acid/ S³ Lithium-ion batteries
Voltage (Vdc)	480 (384-528, 456-528 at full load)				528 (384-528, 480-576 at full load)
Charging Current (A)	25-100				25-200
GENERAL
Communication	RS232/RS485, Dry contact Optional: SNMP card
Display	7" touch screen
Noise (dB)	<65
Working Temperature (°C)	-5~40
Altitude (m)	2000
Relative Humidity	0 ~ 95%, no condensation
Protection Grade	IP20
Agency/Certification/Conformance	EN IEC 62040-1, EN IEC 62040-2
Dimension (W×D×H) (mm)	1000×900×1950		1400×900×1950		1900×900×1950	3000×900×1950
Weight (kg)	750		1100		1450	2400

Get in touch today

Thank you

Thanks for reaching out. We will get back to you soon.

Oops! Something went wrong while submitting the form.

UPS Products

Advanced Technology

Excellent Flexibility

Green Power

Technical Specifications

High Efficiency

User-friendly Interface

Green Power

Technical Specifications

Advanced Technology

Excellent Flexibility

Green Power

Technical Specifications

Advanced Technology

Flexible Design

Green Power

Technical Specifications

Get in touch today

Thank you