UI, UIP and UIR operation
Available control modes include voltage and current limiting, additional power limiting and simulation of an adjustable internal resistance.
LAB/HP – Programmable High-Power DC Power Supply up to 63 kW single Unit
For demanding DC test tasks in laboratories, production environments and integrated test systems.
The modular power architecture combines compact 19-inch enclosures from 2 to 9 U with model-dependent output voltages up to 1,500 V. This provides a consistent operating and integration platform for a wide range of high-voltage and high-current operating points.
PV characteristic simulation
PVSim reproduces characteristics using open-circuit voltage, short-circuit current, MPP voltage and MPP current parameters.
Programmable foldback
Sensitive devices under test can be switched off after an adjustable delay during CV, CC or CP limiting conditions.
Master/slave connectable
Multiple units can be coordinated through the device bus for parallel, series or independent operation.
Personal project consultation
Do you need support selecting the right power supply? Our technical specialists will provide personal advice tailored to your application.
Select the appropriate technical configuration or access product documentation directly.
ART. NO.
Description
Current [A]
Power [P]
Voltage [V]
LAB/HP 315
|
Description
LAB/HP 315 DC high-power source, 3 kW, 15 V, 250 A, M/S connectable, Made in Germany
|
Current [A]
250
|
Power [P]
3000
|
Voltage [V]
15
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 320
|
Description
LAB/HP 320 DC high-power source, 3 kW, 20 V, 250 A, M/S connectable, Made in Germany
|
Current [A]
250
|
Power [P]
3000
|
Voltage [V]
20
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 325
|
Description
LAB/HP 325 DC high-power source, 3 kW, 25 V, 240 A, M/S connectable, Made in Germany
|
Current [A]
240
|
Power [P]
3000
|
Voltage [V]
25
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 330
|
Description
LAB/HP 330 DC high-power source, 3 kW, 30 V, 234 A, M/S connectable, Made in Germany
|
Current [A]
234
|
Power [P]
3000
|
Voltage [V]
30
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 335
|
Description
LAB/HP 335 DC high-power source, 3 kW, 35 V, 200 A, M/S connectable, Made in Germany
|
Current [A]
200
|
Power [P]
3000
|
Voltage [V]
35
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 340
|
Description
LAB/HP 340 DC high-power source, 3 kW, 40 V, 175 A, M/S connectable, Made in Germany
|
Current [A]
175
|
Power [P]
3000
|
Voltage [V]
40
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 345
|
Description
LAB/HP 345 DC high-power source, 3 kW, 45 V, 156 A, M/S connectable, Made in Germany
|
Current [A]
156
|
Power [P]
3000
|
Voltage [V]
45
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 350
|
Description
LAB/HP 350 DC high-power source, 3 kW, 50 V, 140 A, M/S connectable, Made in Germany
|
Current [A]
140
|
Power [P]
3000
|
Voltage [V]
50
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 360
|
Description
LAB/HP 360 DC high-power source, 3 kW, 60 V, 117 A, M/S connectable, Made in Germany
|
Current [A]
117
|
Power [P]
3000
|
Voltage [V]
60
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 370
|
Description
LAB/HP 370 DC high-power source, 3 kW, 70 V, 100 A, M/S connectable, Made in Germany
|
Current [A]
100
|
Power [P]
3000
|
Voltage [V]
70
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 380
|
Description
LAB/HP 380 DC high-power source, 3 kW, 80 V, 88 A, M/S connectable, Made in Germany
|
Current [A]
88
|
Power [P]
3000
|
Voltage [V]
80
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 3100
|
Description
LAB/HP 3100 DC high-power source, 3 kW, 100 V, 70 A, M/S connectable, Made in Germany
|
Current [A]
70
|
Power [P]
3000
|
Voltage [V]
100
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 3150
|
Description
LAB/HP 3150 DC high-power source, 3 kW, 150 V, 47 A, M/S connectable, Made in Germany
|
Current [A]
47
|
Power [P]
3000
|
Voltage [V]
150
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 3300
|
Description
LAB/HP 3300 DC high-power source, 3 kW, 300 V, 24 A, M/S connectable, Made in Germany
|
Current [A]
24
|
Power [P]
3000
|
Voltage [V]
300
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 3600
|
Description
LAB/HP 3600 DC high-power source, 3 kW, 600 V, 12 A, M/S connectable, Made in Germany
|
Current [A]
12
|
Power [P]
3000
|
Voltage [V]
600
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 3800
|
Description
LAB/HP 3800 DC high-power source, 3 kW, 800 V, 9 A, M/S connectable, Made in Germany
|
Current [A]
9
|
Power [P]
3000
|
Voltage [V]
800
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 31000
|
Description
LAB/HP 31000 DC high-power source, 3 kW, 1000 V, 7 A, M/S connectable, Made in Germany
|
Current [A]
7
|
Power [P]
3000
|
Voltage [V]
1000
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 31200
|
Description
LAB/HP 31200 DC high-power source, 3 kW, 1200 V, 5.8 A, M/S connectable, Made in Germany
|
Current [A]
5,8
|
Power [P]
3000
|
Voltage [V]
1200
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 31500
|
Description
LAB/HP 31500 DC high-power source, 3 kW, 1500 V, 4.7 A, M/S connectable, Made in Germany
|
Current [A]
4,7
|
Power [P]
3000
|
Voltage [V]
1500
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 415
|
Description
LAB/HP 415 DC high-power source, 4 kW, 15 V, 500 A, M/S connectable, Made in Germany
|
Current [A]
500
|
Power [P]
4000
|
Voltage [V]
15
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 420
|
Description
LAB/HP 420 DC high-power source, 4 kW, 20 V, 250 A, M/S connectable, Made in Germany
|
Current [A]
250
|
Power [P]
4000
|
Voltage [V]
20
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 425
|
Description
LAB/HP 425 DC high-power source, 4 kW, 25 V, 240 A, M/S connectable, Made in Germany
|
Current [A]
240
|
Power [P]
4000
|
Voltage [V]
25
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 430
|
Description
LAB/HP 430 DC high-power source, 4 kW, 30 V, 234 A, M/S connectable, Made in Germany
|
Current [A]
234
|
Power [P]
4000
|
Voltage [V]
30
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP 435
|
Description
LAB/HP 435 DC high-power source, 4 kW, 35 V, 200 A, M/S connectable, Made in Germany
|
Current [A]
200
|
Power [P]
4000
|
Voltage [V]
35
|
High Power DC Source
Technical Data
Product category
DC Power Supply
Type of DC source
Standard DC Source
LAB/HP series overview
LAB/HP is a programmable, switch-mode high-power DC power supply series for development, test and power-delivery systems. Power classes range from 3 to 63 kW, with rated output voltages up to 1,500 V depending on the selected version. Units are supplied as 19-inch rack devices with heights of 2, 3, 6 or 9 U and can be controlled from the front panel, by analogue signals or through digital interfaces. In addition to standard UI operation, the platform provides power limiting, simulated internal resistance, PV characteristics and user-defined UI curves. An ATE version without manual front-panel operation is available for automated equipment. Up can be coordinated in parallel, series or independent master/slave configurations.
Technical classification: LAB/HP operates as a unidirectional DC source. Regenerative sink operation and energy feedback into the AC grid are not part of the specified functionality.
Key benefits
Power classes from 3 to 63 kW
Multiple enclosure and power configurations support compact laboratory installations as well as larger high-power test systems.
Output voltages up to 1,500 V
Different voltage classes cover low-voltage, high-current and high-voltage requirements within the same product family.
Typical efficiency
A typical efficiency of 94% reduces the amount of power converted into heat inside the test installation.
Fast dynamic recovery
A recovery time below 3 ms is specified after dynamic load changes, subject to the unit and test configuration.
Defined set-value accuracy
Set-value accuracy is 0.1% for voltage and 0.2% for current.
Consistent rack integration
The 19-inch format simplifies installation in laboratory racks, ATE equipment and customised test cabinets.
High-power DC source operating principle
LAB/HP converts the incoming AC supply into a regulated DC output through a switch-mode AC/DC power stage. Voltage and current are continuously fed back and limited according to the programmed values. Depending on the selected mode, additional digital controllers calculate power-dependent, resistance-dependent or characteristic-dependent setpoints.
Values can be programmed locally, through an optional analogue interface or through a digital communication interface. Output voltage, current, power and calculated load resistance can be displayed locally or read remotely.
Voltage and current regulation
Standard UI operation provides programmable output voltage with adjustable current limiting.
Additional digital control loops
UIP, UIR and PVSim add power-, resistance- or characteristic-dependent calculations to the primary regulator.
Power range and available configurations
The series is available in graduated power classes. Rated voltage, rated current and output power depend on the selected unit. The required operating point must therefore remain within the voltage, current and power limits of the specific configuration.
| Output power | Rack height | Enclosure depth | Weight |
|---|---|---|---|
| 3 to 7 kW | 2 U | 440 mm | 14 kg |
| 10 kW | 3 U | 620 mm | 26 kg |
| 15 kW | 3 U | 620 mm | 26 kg |
| 21 kW | 3 U | 620 mm | 37 kg |
| 30 kW | 6 U | 620 mm | 52 kg |
| 35 kW | 6 U | 620 mm | 59 kg |
| 45 kW | 6 U | 620 mm | 73 kg |
| 49 kW | 6 U | 620 mm | 85 kg |
| 56 kW | 9 U | 620 mm | 92 kg |
| 63 kW | 9 U | 620 mm | 99 kg |
The output voltage range extends up to 1,500 V depending on the model. Ripple, current range, rise time and fall time vary with the selected voltage class.
Dynamic performance and regulation
Dynamic characteristics are specified according to the rated voltage class. Full-load rise times range from 6 to 40 ms depending on the model. Recovery after a dynamic load change is specified at below 3 ms until the output voltage returns to the stated tolerance band.
| Parameter | Value | Practical relevance |
|---|---|---|
| Static output regulation | ±0.1% F.S. | Limits static deviation relative to the full-scale rating of the selected configuration. |
| Voltage stability during line variation | ±0.02% F.S. | Reduces output-voltage changes caused by variations within the permitted AC input range. |
| Current stability during line variation | ±0.02% F.S. | Supports repeatable current limiting under varying AC input conditions. |
| Voltage stability during load variation | ±0.05% F.S. ±20 mV | Describes the output-voltage deviation between different load conditions. |
| Current stability during load variation | ±0.05% F.S. ±20 mA | Describes current-limit deviation when the connected load changes. |
| Full-load rise time | 6 to 40 ms | The applicable value depends on the rated voltage class of the selected model. |
| Dynamic recovery time | <3 ms | Indicates recovery of the output voltage after a dynamic load change. |
| Voltage set-value accuracy | 0.1% | Supports repeatable programming of defined DC voltage levels. |
| Current set-value accuracy | 0.2% | Relevant to current limiting and current-dependent test sequences. |
Operating modes and programmable functions
| Function | Technical operation | Typical benefit |
|---|---|---|
| UI | Direct programming of output voltage and current limiting. | Supplies devices under test at defined DC operating points. |
| UIP | Adds a programmable maximum output-power limit. | Prevents the device under test and source from entering an excessive power condition. |
| UIR | Regulates output voltage according to an adjustable simulated internal resistance. | Reproduces the voltage behaviour of a non-ideal DC source. |
| PVSim | Simulates a PV characteristic using open-circuit voltage, short-circuit current and an MPP operating point. | Provides repeatable input conditions for inverters and MPPT controllers. |
| User-defined UI characteristic | Transfers characteristic points with stepped or linear interpolation. | Reproduces product-specific or application-specific source characteristics. |
| Script operation | Executes stored setpoints, delays, loops and operating-mode commands. | Automates repetitive sequences without continuous control from an external computer. |
| Voltage and current slope | Programmable voltage and current ramps when the output leaves standby. | Avoids abrupt setpoint transitions for sensitive devices under test. |
| Foldback | Switches the output off after an adjustable delay during CV, CC or CP limiting conditions. | Limits the duration of stress caused by faults or unexpected DUT behaviour. |
Typical applications
The operating modes support conventional high-power DC supply tasks as well as characteristic-based and automated test procedures.
PV and inverter testing
PVSim provides defined open-circuit, short-circuit and MPP conditions for the DC input stage of an inverter.
Production and end-of-line testing
ATE configurations, remote control and script functions support repeatable power sequences in automated test stations.
DC/DC converters and power electronics
Programmable voltage, current and power limits establish defined input conditions for converters, controllers and power modules.
Automated test equipment
Digital or analogue remote control allows integration into test software, industrial controllers and customised automated procedures.
High-voltage components
Voltage configurations up to 1,500 V support the supply and functional testing of appropriately rated high-voltage assemblies.
Scalable DC systems
Master/slave operation enables power-, current- or voltage-expanded systems with central setpoint programming.
Interfaces, software and automation
Device communication uses an ASCII command set. Basic IEEE-488.2-compatible commands are also supported. The actual interface configuration depends on the selected device version and ordered options.
| Interface or function | Capabilities | Availability |
|---|---|---|
| RS232 | Serial remote control with configurable transmission parameters up to 115,200 baud. | Digital device interface. |
| LAN | Network connection with monitoring and control through a browser or Telnet. | Dependent on the device configuration. |
| Analogue interface | Setpoint inputs and monitor outputs for voltage, current, power and OVP with selectable signal levels. | Option. |
| RS485 | Addressable bus communication for multiple units with configurable response timeout. | Option. |
| IEEE 488 / GPIB | Integration into existing laboratory and measurement systems through an IEEE-488 interface. | Option. |
| USB | Virtual COM port operated in the same way as a serial RS232 connection. | Option. |
| Digital command set | Programming of voltage, current, power, modes, protection limits, characteristics and measurement queries. | ASCII protocol. |
| Data logger | Records measured output values on the storage medium inserted at the front panel. | Optional or configuration-dependent. |
| ATE configuration | Device version without manual front-panel control for exclusive operation through external interfaces. | Option. |
Parallel operation, series operation and scaling
The master/slave function coordinates multiple LAB/HP units through a dedicated device bus. Parallel operation increases the available total current, while series operation adds the output voltages. In independent mode, connected units receive setpoints through the bus while their power outputs remain electrically separate.
| Feature | Specification |
|---|---|
| Maximum number of units | Up to eight devices. |
| Available modes | Off, parallel, series and independent. |
| Maximum series voltage | 1,000 V |
| Maximum total power using standard units | 504 kW |
| Custom system power | Customised systems are available with power ratings up to 1.4 MW. |
| Central operation | Setpoints and modes are transferred through the leading unit or a digital interface. |
| Measurement queries | Total values and measurements from individual connected units can be read digitally. |
| Limitation | Master/slave operation cannot be combined with memory-card operation. |
Electrical series or parallel connections must be designed according to the ratings, insulation limits and protection requirements of the complete system. Project-specific verification is recommended for larger configurations.
Installation and infrastructure
AC input, protection devices, conductor cross-sections and cooling requirements depend on the selected power class and input voltage. The unit must be connected directly to the specified mains supply.
| Installation parameter | Requirement |
|---|---|
| AC input frequency | 47 to 63 Hz |
| Single-phase input | 1 × 230 VAC for power classes from 3 to 5 kW, depending on the unit configuration. |
| Three-phase inputs | 3 × 200, 208, 400, 440 or 480 VAC within the tolerance ranges. |
| Cooling method | Forced-air cooling by fans. |
| Required air volume | Up to 310 m³/h per 7.5 kW module. |
| Rear air-outlet clearance | At least 100 mm |
| Operating temperature | 0 to 50 °C |
| Storage temperature | −20 to 70 °C |
| Humidity | <80% |
| Operating altitude | <2,000 m |
| Protection class | IP20 |
| Typical efficiency | 94% |
| Leakage current | <35 mA |
The protective-earth connection at the AC input and the additional rear earthing point must be included in the installation. Conductor cross-sections and external overcurrent protection must be selected for the relevant power class and input voltage.
Protection and safety functions
Overvoltage protection
The output is switched off if the measured output voltage exceeds the programmed OVP value.
Overcurrent protection
An adjustable OCP threshold and configurable delay protect against excessive output current.
Undervoltage protection
The output can be disabled after a defined delay if the voltage falls below the programmed threshold.
Overtemperature protection
The unit switches off automatically if the internal heat-sink temperature exceeds the permitted limit.
Soft interlock
The soft-interlock function can externally inhibit the output but does not automatically constitute a machinery-safety function.
Additional protection options
Available options include AC and DC interlocks, emergency output shutdown, a freewheeling diode and passive or active overvoltage protection.
LAB/HP series FAQ
What is the maximum output power of a single unit?
The standard power classes extend up to 63 kW per unit.
Which output voltages are available?
Different voltage classes are available up to 1,500 V. Rated current and ripple depend on the selected version.
Can LAB/HP operate as an electronic load?
No. LAB/HP is a unidirectional DC source without regenerative sink operation.
Is PV simulation included?
Yes. PVSim uses open-circuit voltage, short-circuit current, MPP voltage and MPP current to define the characteristic.
Can several units be combined?
Yes. Up to eight devices can be coordinated in parallel, series or independent master/slave operation.
Which remote interfaces are available?
RS232 and LAN are available, together with optional analogue, RS485, USB and IEEE 488 or GPIB interfaces.
How quickly does the output recover from a load change?
A dynamic recovery time below 3 ms is specified. Rise time depends on the rated voltage class.
What must be considered during rack installation?
Cooling air must pass through the unit without obstruction, and at least 100 mm clearance is required at the air outlet.
Technical consultation and project enquiry
Selection of the correct voltage class depends on the required DC operating point, continuous power, dynamic load behaviour and planned system integration.
ET System can assist with parallel or series configurations, special protection functions, ATE versions and customised cabinet systems.
Submit a technical LAB/HP enquiry