BKF880 series digital energy feedback

 

 

 

BKF880 energy feedback is suitable for three-phase AC power supply equipment with AC voltage below 660V and 50Hz. It adopts the most advanced military grade high-performance 32-bit DSP digital processing controller with floating point operation, which can quickly detect system voltage, current, power, reactive power and other parameters, and achieve coordinate rotation changes. The control and operation of digital PI regulators and other functions drive the power device (IGBT) of PWM converters, allowing the output energy of the product to flow to the power grid, achieving energy conservation.

​product detail

Prod­uct de­tails

Product Features:

Voltage range: three-phase AC<660V   -15%+10%

Power range: below 500KW

Power frequency range: 50±3Hz

Carrier frequency: depending on specific model(6KHz、3KHz)

DC voltage range: > 1.5 times the grid voltage+50V, < 750V or 1150V

Power factor: >98% 

High reliability: dynamic response ≤ 300us, full response ≤ 10ms;

Protection functions: overvoltage, undervoltage, overcurrent, short circuit, overheating, phase locking;

Display screen: LED or LCD optional; Automatic measurement and feedback of power grid energy.



Product Features:

Suppress harmonic currents and improve power quality in the power grid;

Two-way flow of current and energy, four-quadrant operation,improve energy efficiency;

The DC bus voltage remains stable, especially suitable for situations where the power supply voltage is consistently low;

Low voltage single machine capacity of 500KW, no need for parallel use, reducing faults.  


 

 

 

Applications:

Energy feedback is widely used in downstream belts, electric dynamometers, large centrifugal equipment, and lifting equipment.



 

 

 

Product specifications:

LCD product specifications

ModelOperating voltage(V)Adaptive power(KW)

Rated current

(A)

Grid frequency(Hz)Cabinet appearance

Equipped with copper core cable

(m㎡)

BKF880-DF-045-2HC220457850E25
BKF880-DF-075-2HC2207513050E50
BKF880-DF-110-2HC22011019550F70
BKF880-DF-090-4HC380909050E35
BKF880-DF-110-4HC38011011050E35
BKF880-DF-132-4HC38013213250E50
BKF880-DF-160-4HC38016016050E50
BKF880-DF-200-4HC38020020050F70
BKF880-DF-250-4HC38025025050F95
BKF880-DF-315-4HC38031531550G95
BKF880-DF-350-4HC38035035050G120
BKF880-DF-400-4HC38040040050G120
BKF880-DF-500-4HC38050050050H150
BKF880-DF-045-6HC660452550E10
BKF880-DF-055-6HC660553150E10
BKF880-DF-075-6HC660754250E16
BKF880-DF-090-6HC660905150E16
BKF880-DF-110-6HC6601106050E16
BKF880-DF-132-6HC6601327350E25
BKF880-DF-160-6HC6601608850E25
BKF880-DF-200-6HC66020011050F35
BKF880-DF-250-6HC66025013850F50
BKF880-DF-315-6HC66031517550G70
BKF880-DF-350-6HC66035019450G95
BKF880-DF-400-6HC66040022050G95
BKF880-DF-500-6HC66050028050H120

BKF880-DFC-055-2HC22045/5515650E70
BKF880-DFC-090-2HC22075/9023050F95
BKF880-DFC-055-4HC38045/559050E25
BKF880-DFC-075-4HC38055/7511050E35
BKF880-DFC-090-4HC38075/9013250E50
BKF880-DFC-110-4HC38090/11016050E70
BKF880-DFC-132-4HC380110/13220050F95
BKF880-DFC-160-4HC380132/16025050F95
BKF880-DFC-200-4HC380160/20031550G120
BKF880-DFC-220-4HC380200/22035050I150
BKF880-DFC-250-4HC380220/25040050I150
BKF880-DFC-315-4HC380250/31550050I150
BKF880-DFC-045-6HC66037/454250E16
BKF880-DFC-075-6HC66055/756050E16
BKF880-DFC-090-6HC66075/907550E25
BKF880-DFC-110-6HC66090/1108850E25
BKF880-DFC-132-6HC660110/13211050F35
BKF880-DFC-160-6HC660132/16013850F50
BKF880-DFC-200-6HC660160/20017550G70
BKF880-DFC-220-6HC660200/22019350G70
BKF880-DFC-250-6HC660220/25022050G95
BKF880-DFC-315-6HC660250/31528050H120

BKF880-LF-110-4HC38011011050E35
BKF880-LF-132-4HC38013213250E50
BKF880-LF-160-4HC38016016050E50
BKF880-LF-200-4HC38020020050E70
BKF880-LF-250-4HC38025025050F70




LED product specifications

Model

Operating voltage

(V)

Adaptive power(KW)

Rated current

(A)

Grid frequency(Hz)Cabinet appearance

Equipped with copper core cable

(m㎡)

BKF880-DF-045-2HE220457850E25
BKF880-DF-075-2HE2207513050E50
BKF880-DF-110-2HE22011019550F70
BKF880-DF-015-4HE380151550A16
BKF880-DF-018-4HE38018.51850A16
BKF880-DF-022-4HE380222250A16
BKF880-DF-030-4HE380303050A16
BKF880-DF-037-4HE380373750A16
BKF880-DF-045-4HE380454550A16
BKF880-DF-055-4HE380555550A/C25
BKF880-DF-075-4HE380757550B25
BKF880-DF-090-4HE380909050E35
BKF880-DF-110-4HE38011011050E35
BKF880-DF-132-4HE38013213250E50
BKF880-DF-160-4HE38016016050E50
BKF880-DF-200-4HE38020020050F70
BKF880-DF-250-4HE38025025050F95
BKF880-DF-315-4HE38031531550G95
BKF880-DF-350-4HE38035035050G120
BKF880-DF-400-4HE38040040050G120
BKF880-DF-500-4HE38050050050H150
BKF880-DF-045-6HE660452550E10
BKF880-DF-055-6HE660553150E10
BKF880-DF-075-6HE660754250E16
BKF880-DF-090-6HE660905150E16
BKF880-DF-110-6HE6601106050E16
BKF880-DF-132-6HE6601327350E25
BKF880-DF-160-6HE6601608850E25
BKF880-DF-200-6HE66020011050F35
BKF880-DF-250-6HE66025013850F50
BKF880-DF-315-6HE66031517550G70
BKF880-DF-350-6HE66035019450G95
BKF880-DF-400-6HE66040022050G95
BKF880-DF-500-6HE66050028050H120

BKF880-DFC-055-2HE22045/5515650E70
BKF880-DFC-090-2HE22075/9023050F95
BKF880-DFC-7R5-4HE3805.5/7.51150A6
BKF880-DFC-011-4HE3807.5/111850A10
BKF880-DFC-015-4HE38011/152250A10
BKF880-DFC-018-4HE38015/18.53050A16
BKF880-DFC-022-4HE38018/223750A16
BKF880-DFC-030-4HE38022/304550A16
BKF880-DFC-037-4HE38030/375550B25
BKF880-DFC-045-4HE38037/457550B25
BKF880-DFC-055-4HE38045/559050E25
BKF880-DFC-075-4HE38055/7511050E35
BKF880-DFC-090-4HE38075/9013250E50
BKF880-DFC-110-4HE38090/11016050E70
BKF880-DFC-132-4HE380110/13220050F95
BKF880-DFC-160-4HE380132/16025050F95
BKF880-DFC-200-4HE380160/20031550G120
BKF880-DFC-220-4HE380200/22035050I150
BKF880-DFC-250-4HE380220/25040050I150
BKF880-DFC-315-4HE380250/31550050I150
BKF880-DFC-045-6HE66037/454250E16
BKF880-DFC-075-6HE66055/756050E16
BKF880-DFC-090-6HE66075/907550E25
BKF880-DFC-110-6HE66090/1108850E25
BKF880-DFC-132-6HE660110/13211050F35
BKF880-DFC-160-6HE660132/16013850F50
BKF880-DFC-200-6HE660160/20017550G70
BKF880-DFC-220-6HE660200/22019350G70
BKF880-DFC-250-6HE660220/25022050G95
BKF880-DFC-315-6HE660250/31528050H120

BKF880-LF-018-4HE380181850A10
BKF880-LF-022-4HE380222250A10
BKF880-LF-030-4HE380303050A16
BKF880-LF-037-4HE380373750A16
BKF880-LF-045-4HE380454550A16
BKF880-LF-055-4HE380555550A25
BKF880-LF-075-4HE380757550A/C25
BKF880-LF-110-4HE38011011050E35
BKF880-LF-132-4HE38013213250E50
BKF880-LF-160-4HE38016016050E50
BKF880-LF-200-4HE38020020050E70
BKF880-LF-250-4HE38025025050F70

Note: The size shall be subject to the specification drawing of the corresponding model. If there is any update, please place the final order or consult the manufacturer's sales engineer.





Electrical parameters:

Input Voltage
Power Voltage3AC220V、3AC380V、3AC660V(-15%+10%)or customized
Grid frequency50±3Hz
DC Voltage220V<400V; 380V:<720V ; 660V:<1150V
Voltage harmonics<5%
Performance characteristics
Rated capacity

220V:

30KW/45KW/75KW/110KW

380V:

45KW/75KW/110KW/160KW/200KW/250KW/315KW/400KWetc.

660V:

45KW/75KW/110KW/160KW/200KW/250KW/320KW/400KW/500KWetc.

DC voltage control

Feedback function:

Operating voltage: > 1.5 times the grid voltage + 50V

220V:<400V

380V:<720V

660V:<1150V

PWM rectification and SVG features:

Stable voltage: > 1.5 times the grid voltage+50V

220V:<400V

380V:<720V

660V:<1150V

Voltage control accuracy≤0.5%
Power factor>0.95
Output harmonic content<5%
Overload capacity record1.45 times for 60 seconds; 1.5 times protection
Operating efficiency≥97%
Full response time≤10ms
Control mode
Control Chip

150MHz high-speed DSP digital signal processor

Programmable gate array FPGA

Control method

PWM current tracking control technology; DC side voltage balance control technology;

Coordinate transformation vector control technology; Instantaneous current detection technology

Control function

Feedback control

PWM rectification control

Static var compensation control (SVG)

Operation modeResistive load; Capacitive load; inductive load
Communication methodCAN、RS485
Monitor interface

display:

Grid voltage, AC current, DC voltage, real-time power, feedback energy, fault information and warning status, etc

Settings:

Control parameters such as feedback input voltage, feedback cutoff voltage, DC constant voltage, feedback voltage, working mode, etc

Protection methodOvercurrent, DC overvoltage, AC overvoltage, AC undervoltage, IGBT direct connection, equipment overheating, reactor overheating, phase-locked fault, and external settings
Protection response timeLess than 300us,the overcurrent,overvoltage and IGBT through protection are less than 10us
Fault outputRelay output, 2 normally open passive contacts, contact capacity AC250V/5A
Cooling methodControllable air cooling
Control power supply220VAC
Application 
Installation environmentIndoor, no sunlight, no explosive, conductive or corrosive gases
Ambient temperature-10℃---40℃
Ambient humidity<90%, no condensation
Altitude≤1000meters 
Electromagnetic compatibility

Compliant with GB/T7251-2005 (GB/T7261-2000), including:

Attenuating shock wave pulse group interference, radiated electromagnetic field interference, electrostatic discharge interference, surge (impact) interference, voltage interruption immunity, magnetic field emission test, etc

Storage/transportation temperature-40℃---70℃
Protection gradeIP20 or customized
Vibration amplitudeLess than 0.6g
Lightning Protection25KA
Application 
Installation environmentIndoor, no sunlight, no explosive, conductive or corrosive gases
Ambient temperature-10℃---40℃
Ambient humidity<90%, no condensation
Altitude≤1000meters
Electromagnetic compatibility

Compliant with GB/T7251-2005 (GB/T7261-2000), including:

Attenuating shock wave pulse group interference, radiated electromagnetic field interference, electrostatic discharge interference, surge (impact) interference, voltage interruption immunity, magnetic field emission test, etc

Storage/transportation temperature-40℃ to 70℃
Protection gradeIP20 or customized
Vibration amplitudeLess than 0.6g
Lightning Protection25KA
●When the environmental humidity on the application site is relatively high, especially when there is condensation phenomenon, such as the distribution cabinet equipment of non-ferrous metal mines, gold mines, aluminum mines, and phosphate mines used below the ground, integrators or users need to handle the electrical control cabinet, such as strengthening the IP protection level of the electrical control cabinet, installing humidity heating controllers inside the electrical control cabinet, and reasonably adding some moisture-proof desiccants to handle it.


 

 

 

Shenzhen Beike Electrical Technology Co., Ltd

Shenzhen Shell Electric Technology Co., Ltd

 

company:415-416, Block B, Huafeng Creative World, Gushu Qianjin 2nd Road, Xixiang Street, Bao'an District, Shenzhen

factory:4th to 6th floors, No. 2, Lane 6, Kuangling Road, Libeling Village, Dalang Town, Dongguan City

tel:0755-29810633

fax:0755-29810622

 

 

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