DC LABORATORY POWER SUPPLIES

Choose the right DC power supply for development, testing, and industrial processes. Our DC laboratory power supplies range from compact benchtop units to programmable precision power supplies and high-voltage and high-power models. The product comparison tool helps you match the output range, regulation characteristics, interfaces, and additional features to your application. For special loads and requirements, we’ll advise you on the appropriate equipment.

  DP-M Series
Discontinued model		 DP-HV Series DP-S Series DP-P Series DP-PH Series DP-H Series DP-HA Series
Voltage range: 0 ... 5kV 0 … 300 kV 0 … 1000 V 0 ... 2kV Depending on the model, up to 30 kV 0 ... 150V 0 ... 605V
Current range: 0 ... 10kA 0 ... 0.2A 0 ... 250A 0 … 1000 A 0 ... 8A 0 ... 60A 0 ... 111A
Power range: 0 ... 1MW 0 … 3.75 kW 0 ... 6kW 0 ... 15kW 0 ... 8kW 0 ... 900W 0 ... 1500W
Cabinet: 19″ 1HE ... 3HE Compact or rack-mount enclosure, depending on the model Table-top unit 19″ 19″ Table-top unit Table-top unit
Regulation: U / I U / I U / I U / I U / I U / I Auto-ranging U / I
Load regulation U: ≤0.1%FS to ≤0.2%FS ≤1% FS ≤0.5% + 2 dig ≤0.1% + 2 LSB ≤0.5% + 2 LSB ≤0.1% + 5mV ≤0.01% + 5 mV to ≤0.01% + 100 mV, depending on the model
Load regulation I: ≤0.1%FS to ≤0.2%FS ≤1% FS ≤0.5% + 2 dig ≤0.2% + 2 LSB ≤0.5% + 2 LSB ≤0.1% + 5mA ≤0.1% + 5 mA to ≤0.1% + 10 mA, depending on the model
Mains regulation U: ≤0.2%FS ≤1% FS ≤0.2% + 2 dig ≤0.1% + 2 LSB ≤0.1% + 2 LSB ≤0.01% + 4mV ≤0.01% + 2.5 mV to ≤0.01% + 50 mV, depending on the model
Line regulation I: ≤0.2%FS ≤1% FS ≤0.5% + 2 dig ≤0.1% + 2 LSB ≤0.1% + 2 LSB ≤0.1% + 3mA ≤0.1% + 2.5 mA to ≤0.1% + 10 mA, depending on the model
Residual ripple U: ≤0.3% FS + 50 mV to ≤1% FS + 100 mV ≤1% FS (rms) ≤1%FS (rms) ≤50 mV to ≤200 mV, depending on the model ≤0.05% FS to ≤0.1% FS, depending on the model ≤2mVrms / ≤30mVpp ≤50 mVpp to ≤300 mVpp, depending on the model
Residual Ripple I: ≤0.3%FS + 10mA ≤1% FS (rms) ≤1%FS (rms) ≤50 mA to ≤200 mA, depending on the model ≤0.05% FS to ≤0.1% FS, depending on the model ≤10mArms ≤15 mArms to ≤150 mArms, depending on the model
Recovery time: 5 ms (50% load change) Not specified Not specified Not specified Not specified ≤1.5 ms (50% load change) ≤5 ms (10% → 90% load)
Display accuracy U: ≤0.1%FS + 20mV to ≤0.2%FS + 100mV ±0.5% FS ±2 digits ±1% FS ±1 digit ≤0.2% ± 2 LSB ≤0.2% ± 2 LSB ±0.02% reading + 5mV ±0.01% reading + 5mV
±0.02% reading + 50mV (155V)
±0.02% reading + 100mV (305V & 605V)
Display accuracy I: ≤0.3%FS + 10mA to ≤0.5%FS + 200mA ±0.5% FS ±2 digits ±1% FS ±1 digit ≤0.5% ± 2 LSB ≤0.5% ± 2 LSB ±0.1% reading + 0.1%FS ±0.1% reading + 0.1%FS
±0.1% reading + 40mA (111A)
Setting accuracy U: ≤0.1%FS + 20mV to ≤0.2%FS + 100mV ±0.5% FS ±2 digits ±0.5% of reading ±2 digits ±0.2% ± 2 LSB ±0.2% ± 2 LSB ±0.03% reading + 10mV ±0.01% of reading + 10 mV (35 V, 80 V, 85 V)
±0.03% of reading + 100 mV (155 V)
±0.03% of reading + 200 mV (305 V & 605 V)
Setting accuracy I: ≤0.3%FS + 10mA to ≤0.5%FS + 200mA ±0.5% FS ±2 digits ±1% of reading ±2 digits ±0.5% ± 2 LSB ±0.5% ± 2 LSB ±0.1% reading + 0.1%FS ±0.1% reading + 10mA
±0.1% reading + 60mA (111A)
Ext. control analogue: Yes* Yes Yes* Yes* Yes* Yes No
Ext. feedback analogue: Yes* Yes No Yes* Yes* Yes No
RS232: Yes No No Yes Depending on the
model**		 Yes Yes
RS485: Yes Yes* No Yes Yes Yes Yes
RS422: No No No No No No No
LAN: Yes* No No Yes* Yes* No No
USB (virtual COM port): No No Yes No No No No
USB (Host): No No No No No Yes Yes
Open protocol: Yes Yes* Yes Yes Yes Yes Yes
Modbus RTU: Yes Yes* Yes Yes Yes Yes Yes
SCPI: No No No No No Yes Yes
Reverse current protection: Yes Yes Yes Yes Yes Yes Yes
Polarity changer: External module (AP series) No No External module (AP series) No No No
Interlock: Yes* Yes Yes* Yes Yes No No
External Output On/Off: Yes* Yes Yes* Yes* Yes* Yes Yes

* Optional. ** DP-PH: No RS232 on the DP100H-04PH, DP120H-033PH, DP100H-05PH, and DP120H-041PH; on other DP-P/DP-PH models, RS232 is not available when analog I/O is used.

DP-P and DP-PH: Both RJ45 communication ports are RS485 by default. With the LAN option, one of them becomes a LAN port, while the other remains RS485. The remaining ports remain unchanged.

DP-M Product Status: Discontinued model; available as usual through 2027. After that, the devices will only be available to existing customers for expanding or supplementing their existing DP-M systems. Successor series: DP-P and DP-PH.

Notes on the DP-P Series: The 15 kW modules support exclusively parallel Master/slave operation as standard and are available in Master or slave versions. Models with different rated power do not support this function. Optional LAN can be configured for server/client operation. The standard 5V interlock loop enables external blocking and enabling of the output. Remote measurement up to 2V is standard on models with an output current exceeding 50A. Outputs up to and including 1500V are potential-free.

Notes on the comparison: The maximum values for a series include customer-specific configurations. They are not achievable simultaneously with every model. For DP-PH, the lower voltage setting limit may be greater than 0 V. ØPL is the arithmetic mean of the net price divided by the rated power for the currently listed models.

For the DP-P and DP-PH models, the optional analog I/O package replaces an existing RS232 port and can be ordered independently of the LAN. The output ON/OFF trigger is a factory-set alternative to the standard interlock function, specified at the time of order. The DP-PH series does not support Master/slave operation, nor does it support parallel or serial connections. For the DP-HV series, RS485 replaces the analog I/O, while the standard interlock loop remains. The DP-H and DP-HA series use SCPI via RS232 and Modbus RTU via RS485. Their program triggers control user-defined sequences and are not safety interlocks. An interlock loop is not provided as standard or as an option for these two series.

Reverse-current protection refers to the built-in basic protection against same-polarity reverse currents within the device’s limits. For compatible series, the AP9 provides additional protection tailored to the load and power. The DP-S series delivers up to 60% of the model’s rated power continuously; above that, it delivers the rated power for at least 1 hour at an ambient temperature of 25°C.

The DP-M Series DC power supplies feature digital CC/CV control and RS232/RS485 connectivity. Models with a rated current of 50A or higher also offer remote sensing up to 2V. This series is being phased out and will be replaced by the DP-P and DP-PH series. Regular sales will continue through 2027; after that, these units will be available only for expanding or supplementing existing DP-M systems for current customers.

Maximum values for the series:
5 kV / 10 kA / 1 MW / ØPL = 0.65 €/W

The DP-P Series includes DC laboratory power supplies with digital CC/CV control and RS232 as well as RS485 with Modbus RTU. An optional LAN interface, an analog I/O package available separately as an alternative to RS232, standard interlock, and AP5 through AP9 open up additional possibilities. The 15 kW modules support exclusively parallel “ Master/Slave” operation as standard and are available in “ Master ” or “Slave” versions. Models with different rated power do not support this function.

Maximum ratings for the series:
2000 V / 1000 A / 15 kW / ØPL = 0.85 €/W

The DP-PH series offers high-voltage power supplies with CC/CV regulation and digital interfaces for laboratory and test bench applications. LAN and analog I/O are available as independent options. An interlock loop is included as standard equipment. The AP9, AP7, and AP5 models offer additional features. Remote measurement is not supported. The AP6 and AP8 models are not compatible.

Maximum values for the series:
30 kV / 8 A / 8 kW / ØPL = 2.01 €/W

DP-HV Series High-Voltage Power Supplies Front Banner

The DP-HV series consists of high-voltage power supplies with CC/CV control and the option of local or external operation. Analog I/O is included as standard equipment and can be replaced with RS485 via Modbus RTU when ordering. The standard interlock loop remains intact. The output is always grounded.

Maximum values for the series:
300 kV / 0.2 A / 3.75 kW / ØPL = 19.01 €/W

The DP-S Series consists of compact DC laboratory power supplies with CC/CV control for testing and repair tasks. The standard USB port enables Modbus RTU communication via a virtual COM port. Analog control inputs and interlocks are optional. Continuous operation is possible up to 60% of the model’s rated power; above that, operation at the rated power is possible for at least 1 hour at an ambient temperature of 25°C.

Maximum ratings for the series:
1000V / 250A / 6kW / ØPL = 0.81€/W

The DP-H Series combines 1 mV / 1 mA setting and display resolution with user-defined test sequences that are stored in the device and executed automatically. A battery charging function, RS232/SCPI, RS485/Modbus RTU, analog 0 … 5 V I/O, and remote measurement up to 2 V round out the features.

Maximum ratings for the series:
150V / 60A / 900W / ØPL = 1.19€/W

The DP-HA series combines auto-ranging with user-defined test sequences that are created, saved, and automatically executed on the front panel. A battery charging function, RS232/SCPI, RS485/Modbus RTU, and remote measurement up to 2 V round out the features. The flexible voltage/current range remains within the rated power of the selected model.

Maximum values for the series:
605V / 111A / 1.5kW / ØPL = 1.79€/W