EVD Series High Precision Bidirectional DC Power Supply

 
.Constant DC voltage output
.Step mode/Gradient mode
.Editable overvoltage/overcurrent protection point
  • EVD


Summary


EVD Series High Precision Bidirectional DC Power Supply is a high precision DC power supply adopting two-stage conversion architecture, featuring high dynamic response, and bidirectional energy flow. Ideal match for E-motor (controller) testing, powertrain system testing etc. For E-motor testing, EVD can be used to simulate the overload capacity, efficiency, locked-rotor current, maximum speed, overspeed, and energy recovery performance of the electric motor and controller.

Items


  • Constant DC voltage output

  • Step mode/Gradient mode

  • Editable overvoltage/overcurrent protection point

  • Editable voltage drop/rise slew rate

  • Voltage compensation

  • External emergency stop


Advantages


  • Wide voltage and current output

  • High precision and resolution

  • High dynamic response in 3-6ms

  • Multi-filtering solutions

  • Superposition of ripple (Optional)

  • Fast CAN communication: 1ms 

  • Standard communication interfaces: RS485, CAN, LAN, Ether CAT (optional)


Download    Download


Models

Rated Power

[kW]

Rated Current

[A]

Rated Voltage

[V]

Peak Power

(60s) [kW]

Peak Current

(60s) [A]

Voltage Range

[V]

EVD-80-1000

80

300

266

120

450

24-1000

EVD-100-1000

100

350

285

150

525

24-1000

EVD-150-1000

150

500

300

200

666

24-1000

EVD-200-1000

200

600

333

250

750

24-1000

EVD-250-1000

250

600

416

350

840

24-1000

EVD-300-1000

300

750

400

400

1000

24-1000

EVD-400-1000

400

1000

400

500

1250

24-1000

EVD-500-1000

500

1200

416

600

1440

24-1000

*Rated voltage of each model above is also available in 800V and 1200V. High voltage standard product is also available in 1500V and 2000V, with dual channel.




Other Parameters


Input Requirement

Phase

3φ3W+PE

Voltage

380V±15%

Frequency

50Hz±5Hz

Output Characteristic

Voltage Precision

±(0.1%·FS+5dgt)

Current Precision

±(0.1%·FS+5dgt)

Response Time

≤3ms (10%-90% sudden loading)

Switching Time

≤6ms (+90%~-90%)

Voltage Ripple (rms)

≤0.2%·FS

Load Regulation

0.1%·FS

Protection

OVP/OCP/OTP/Phase loss/Emergency stop etc.

Feedback Characteristics

Energy Recovery

Energy recovery is available in full power range.

iTHD

≤3%

Power Factor

≥0.99

Communication Interfaces

Local Interface

LCD

Remote Comms

RS485/LAN/CAN

Others

External emergency stop/Fault signal/Voltage compensation

Safety & Ambient Conditions

Insulation Resistance

≥20MΩ (500Vdc)

Voltage Withstand

2000Vdc (60s, no arcing/breakdown)

Ground Resistance

≤0.1Ω

Protection Level

IP21 (indoor)

Cooling

Fan cooling

Ambient Temperature

-10~40℃

Relative Humidity

0-90%RH (non-condensing at 25℃)

Altitude

≤2000m


Download     Download

We are dedicated to becoming a world leading brand for test power supplies & systems.

FOLLOW US

QUICK ACCESS

Copyright  2021 Hefei Kewell Power System Co., Ltd.

Contact Us