BSL
Bidirectional DC system
High power DC power supply for test benches, power electronics testing and industrial applications.
The LAB-SLV-E series is a powerful bidirectional DC power supply designed for demanding battery, automotive, and power electronics testing applications. With four-quadrant operation, the system can both source and absorb power while returning energy back to the grid. This makes the series ideal for battery testing, EV drivetrain development, charger testing, and power electronics validation, where both charging and discharging processes must be simulated accurately. The systems provide stable and precise control of voltage, current, and power, enabling reliable testing even under dynamic load conditions. For higher power requirements, the series supports master-slave parallel operation, allowing multiple units to be combined into high-power automated test systems. Typical applications include battery system testing, energy storage validation, automotive development, inverter testing, and industrial power electronics test benches.
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Select the appropriate technical configuration or access product documentation directly.
|
Description
BSL 100-1000-200 Bidirectional DC source/load, 100 kW, 1000 V, 200 A, regenerative, M/S parallel scalable
|
Current [A]
200
|
Power [P]
100000
|
Voltage [V]
1000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 100-1000-300 Bidirectional DC source/load, 100 kW, 1000 V, 300 A, regenerative, M/S parallel scalable
|
Current [A]
300
|
Power [P]
100000
|
Voltage [V]
1000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 100-1000-400 Bidirectional DC source/load, 100 kW, 1000 V, 400 A, regenerative, M/S parallel scalable
|
Current [A]
400
|
Power [P]
100000
|
Voltage [V]
1000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 100-1500-133 Bidirectional DC source/load, 100 kW, 1500 V, 133 A, regenerative, M/S parallel scalable
|
Current [A]
133
|
Power [P]
100000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 100-1500-200 Bidirektionale DC-Quelle/Last, 100 kW, 1500 V, 200 A, rückspeisefähig, M/S-parallel skalierbar
|
Current [A]
200
|
Power [P]
100000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 100-1500-266 Bidirectional DC source/load, 100 kW, 1500 V, 266 A, regenerative, M/S parallel scalable
|
Current [A]
266
|
Power [P]
100000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 100-2000-100 Bidirectional DC source/load, 100 kW, 2000 V, 100 A, regenerative, M/S parallel scalable
|
Current [A]
100
|
Power [P]
100000
|
Voltage [V]
2000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 100-2000-150 Bidirectional DC source/load, 100 kW, 2000 V, 150 A, regenerative, M/S parallel scalable
|
Current [A]
150
|
Power [P]
100000
|
Voltage [V]
2000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 100-2000-200 Bidirectional DC source/load, 100 kW, 2000 V, 200 A, regenerative, M/S parallel scalable
|
Current [A]
200
|
Power [P]
100000
|
Voltage [V]
2000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-1000-300 Bidirectional DC source/load, 150 kW, 1000 V, 300 A, regenerative, M/S parallel scalable
|
Current [A]
300
|
Power [P]
150000
|
Voltage [V]
1000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-1000-450 Bidirectional DC source/load, 150 kW, 1000 V, 450 A, regenerative, M/S parallel scalable
|
Current [A]
450
|
Power [P]
150000
|
Voltage [V]
10000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-1000-600 Bidirectional DC source/load, 150 kW, 1000 V, 600 A, regenerative, M/S parallel scalable
|
Current [A]
600
|
Power [P]
150000
|
Voltage [V]
1000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-1500-200 Bidirectional DC source/load, 150 kW, 1500 V, 200 A, regenerative, M/S parallel scalable
|
Current [A]
200
|
Power [P]
150000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-1500-300 Bidirectional DC source/load, 150 kW, 1500 V, 300 A, regenerative, M/S parallel scalable
|
Current [A]
300
|
Power [P]
150000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-1500-400 Bidirectional DC source/load, 150 kW, 1500 V, 400 A, regenerative, M/S parallel scalable
|
Current [A]
400
|
Power [P]
150000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-2000-150 Bidirectional DC source/load, 150 kW, 2000 V, 150 A, regenerative, M/S parallel scalable
|
Current [A]
150
|
Power [P]
150000
|
Voltage [V]
2000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-2000-225 Bidirectional DC source/load, 150 kW, 2000 V, 225 A, regenerative, M/S parallel scalable
|
Current [A]
225
|
Power [P]
150000
|
Voltage [V]
2000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 150-2000-300 Bidirectional DC source/load, 150 kW, 2000 V, 300 A, regenerative, M/S parallel scalable
|
Current [A]
300
|
Power [P]
150000
|
Voltage [V]
2000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 200-1000-400 Bidirectional DC source/load, 200 kW, 1000 V, 400 A, regenerative, M/S parallel scalable
|
Current [A]
400
|
Power [P]
200000
|
Voltage [V]
1000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 200-1000-600 Bidirectional DC source/load, 200 kW, 1000 V, 600 A, regenerative, M/S parallel scalable
|
Current [A]
600
|
Power [P]
200000
|
Voltage [V]
1000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 200-1000-800 Bidirectional DC source/load, 200 kW, 1000 V, 800 A, regenerative, M/S parallel scalable
|
Current [A]
800
|
Power [P]
200000
|
Voltage [V]
1000
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 200-1500-266 Bidirectional DC source/load, 200 kW, 1500 V, 266 A, regenerative, M/S parallel scalable
|
Current [A]
266
|
Power [P]
200000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 200-1500-400 Bidirectional DC source/load, 200 kW, 1500 V, 400 A, regenerative, M/S parallel scalable
|
Current [A]
400
|
Power [P]
200000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
|
Description
BSL 200-1500-533 Bidirectional DC source/load, 200 kW, 1500 V, 533 A, regenerative, M/S parallel scalable
|
Current [A]
533
|
Power [P]
200000
|
Voltage [V]
1500
|
Technical Data
max. Current (± A)
max. power (± W)
max. voltage (V)
Product category
DC Bidirectional
DC Electronic Load
DC Power Supply
Source + Load
Source + Load
Type of DC Load
High Current
Regenerative
Load + Source
Type of DC source
Standard DC Source
Bidirectional
Source + Sink
BSL Series – Bidirectional High-Power DC Power Supply and Regenerative Load for Industrial Test Systems
The BSL Series is a programmable bidirectional DC power supply with integrated regenerative load for industrial high-power applications. As a source-sink system, it combines precise power delivery and controlled energy absorption in one compact platform, making it ideal for demanding test benches, development environments, and automated test systems.
With power classes from 100 kW to 300 kW per standalone unit, standard voltages up to 2000 V, and scalability up to 1.2 MW, the series offers high flexibility for dynamic test processes. Its regenerative operating principle with high efficiency reduces operating costs, minimizes thermal stress, and improves the efficiency of modern test environments.
Key User Benefits
Typical Application Areas
Characterization of high-voltage battery packs, cycle testing for lifetime evaluation, and simulation of battery characteristics for motor and inverter testing.
Precise emulation of I-V curves for various solar modules in accordance with EN 50530:2010, including dynamic shading scenarios and MPP testing.
Automated design validation, quality assurance, and load profile testing of power electronic components in industrial test systems.
The dedicated GUI software enables a direct transition from parameter setup to real-world testing in battery and photovoltaic applications.
Functional and System Description
Key Technical Data
| Parameter | BSL Series | Comment |
|---|---|---|
| Power Range | 100 kW to 300 kW | Per standalone unit |
| System Expansion | Up to 1.2 MW | Parallel operation of up to four units |
| Voltage Levels | 1000 V / 1500 V / 2000 V | Standard configurations |
| Current Control Dynamics | < 5 ms | 0% to 90% |
| Voltage Control Dynamics | < 5 ms | 0–100% load change |
| Voltage Accuracy | 0.1% FS | High precision |
| Current Accuracy | 0.1% FS | High precision |
| Power Accuracy | 0.3% FS | For reproducible tests |
| Data Acquisition | 10 kS/s | Measurement data logging and waveform display |
| Cooling | Forced Air Cooling | Forced air cooling |
| Protection Class | IP21 | Cabinet enclosure |
Variants and Configuration Options
Available in power classes of 100 kW, 150 kW, 200 kW, 250 kW, and 300 kW per standalone unit.
Standard configurations with 1000 V, 1500 V, or 2000 V are available for different test environments.
Supports 380 VLL, 400 VLL, and 480 VLL in various three-phase grid configurations for international industrial environments.
Systems below 1400 kg are equipped with a roller structure, while heavier units use a robust U-steel construction for industrial hall applications.
Integration and Automation
Strategic Value for Industrial Users
The BSL Series provides a powerful and robust platform for industrial high-power testing where efficiency, dynamics, and reproducibility are essential. By combining bidirectional source-sink operation, auto-ranging, and regenerative energy feedback, complex test processes can be implemented economically and flexibly.
Its high energy efficiency, compliance with relevant industrial standards, and scalability up to 1.2 MW create long-term advantages for test fields, development centers, and automated test systems. At the same time, its regenerative capability helps sustainably reduce operating costs and thermal stress.
Consultation and Contact
Not sure whether this product is the best fit for your application? We will be happy to support you in selecting the right solution for your requirements – from a standalone application to complete system integration. You can easily contact us via live chat, the contact form, by email, or by phone – we provide personal and practical advice. Depending on availability, we can also provide a free demo unit for evaluation in your test environment, allowing you to test the system directly under real operating conditions.
