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REP-F feedback electronic load

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Product name

REP-F feedback electronic load

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Product description

REP-F Series DC Feedback Electronic Load  
The REP-F series DC feedback electronic load is a power supply developed for fuel cell stack and engine system testing. The power supply is based on the power frequency isolated IBGT two-pole conversion architecture power electronic converter. DC electronic load for high reliability, programmable, and automatic operation. With high precision and high dynamic response, the input DC energy full power segment can be fed back to the grid. It satisfies the low voltage and high current test and is used in test fields such as fuel cell stacks and fuel cell engine systems.

Product performance characteristics
• High precision; output current accuracy 0.1% FS;
• High dynamic characteristics, fast current switching;
• IGBT type circuit mode, pure digital chemical frequency isolation design;
• Features low voltage and high current, suitable for the environment of stack output test;
• The load has a constant voltage, constant current, constant power mode;
• Programmable protection and operating parameters.
• Large screen LCD display, a variety of communication interfaces;
• With local operation, upper computer operation function, equipped with upper computer software and external communication function;
• It can return energy to the grid; it has two characteristics of power supply and load, and it has the function of high-power DC power supply, realizes the load function of energy automatic feedback to the grid, and has the outstanding advantages of energy saving, green environmental protection;
• The product circuit structure adopts PWM rectification plus DC/DC two-stage circuit, which can realize the characteristics of wide output voltage range, high precision and fast dynamic response.
• PWM rectification + PWM inverter principle, power factor > 0.99. THD and injected harmonic current meet the national standard requirements.
 
System schematic:
 

Technical indicators:

Feature type

Parameter item

Technical Parameters

The input parameters

Number of phase

Three phase four wire +PE

voltage

Phase voltage: 220V 10%, line voltage: 380V 10%

frequency

50/60Hz±5Hz

Isolation function

Built-in isolating transformer (optional)

Input power factor

0.99

Input current distortion

3%

Output parameters

Rated power (kW)

custom

Peak power (kW)

custom

Peak power time (S)

60

Rated voltage (V)

custom

Rated current (A)

custom

Voltage accuracy

Resolution 0.1v

Accuracy of current

Resolution 0.1a

Source effect

0.1%F.S

Effect of load

0.1%F.S

Ripple (Vpp)

0.2%F.S

Transient recovery time

5ms

Current rise time

10ms (10%~90%, resistive load, test conditions: power output, load on test)

Forward and backward switching time

10ms (+90%~-90% switching)

Protection function

IGBT overheating, IGBT over-current, transformer overheating, input over-voltage, input under-voltage, bus over-voltage, output over-voltage, output over-current

Feedback parameters

Three-phase line voltage

380v15% (allowable grid voltage)

frequency

50 10% (allowable grid frequency)

The power factor

0.99 (standard AC source input, distortion within 1.5%)

Total harmonic content

3%

Feedback function

100% energy feedback

According to

Large screen color LCD

Stop function

Equipped with emergency stop button

Soft start

Precharge function

Isolating transformer

optional

Communication interface

RS485, CAN (optional)

 

Corresponding parameter set not found, please add it in property template of background
暂未实现,敬请期待
暂未实现,敬请期待
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