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BK Precision MDL4U305 - MDL4U Load Module (300W / 500V / 20A / 1 Channel)

500V/20A/300W load module_4U

DC load module
For use with MDL4U001 mainframe (sold separately, required for operation)
Power: 300W
Operating voltage: 500V
Rated current: 20A
Number of channels: 1
Seven different load modules are available for a wide range of testing applications
Capable of operating in constant current, voltage, resistance, power and impedance mode
Identical modules can be run in parallel mode for high current applications

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Your Price: $2,220.00

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Items in This Series


Product	B&K Precision MDL4U305 500V/20A/300W load module_4U	B&K Precision MDL4U001 Mainframe for MDL load modules_4U	B&K Precision MDL4U002 Mainframe extension for MDL load modules_4U	B&K Precision MDL4U200 80V/40A/200W load module_4U	B&K Precision MDL4U252 80V/20A/250W 2 CH load module_4U	B&K Precision MDL4U302 80V/45A/300W two channel load module_4U	B&K Precision MDL4U400 80V/60A/400W load module_4U	B&K Precision MDL4U505 500V/30A/500W load module_4U	B&K Precision MDL4U600 80V/120A/600W load module_4U
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Description

BK Precision MDL4U305 - MDL4U Load Module (300W / 500V / 20A / 1 Channel)

MDL4U Load Module (200W / 80V / 40A / 1 Channel)

DC load module
For use with MDL4U001 mainframe (sold separately, required for operation)
Power: 300W
Operating voltage: 500V
Rated current: 20A
Number of channels: 1

The BK Precision MDL4U305 is a DC load module for use with the MDL4U001 mainframe (sold separately, required for operation).

The MDL4U Series is a multi-channel modular programmable electronic load system. Seven different modules of programmable DC loads ranging in power from 200 W to 600 W provide users the flexibility to test a wide range of power sources from multi-output AC/DC power supplies to batteries, fuel cells, and a photovoltaic array.

The mainframe consists of a controller and four open slots that can be populated with any combination of modules up to 2400 W (up to 4800 W with mainframe extension). The high-performance electronic load modules of the MDL4U Series are capable of operating in constant current (CC), constant voltage (CV), constant resistance (CR), constant power (CW), and constant impedance (CZ) mode, which uses DSP technology to simulate non-linear loads and realistic loading behavior.

Easily edit the load’s parameters such as voltage, current, slew rate, and width via the front panel. Increase productivity by saving your test parameters into any one of the 101 memory areas for quick system recall. Additionally, the MDL4U Series provides 16-bit resolution as well as numerous protection modes and a power-on system self-test to ensure the reliability of your testing.

For remote communication, the MDL4U Series provides LAN, USB (USBTMC-compliant), RS232, and GPIB standard interfaces that support SCPI command protocol.

MDL4U load modules

The mainframe can be populated with any combination of four modules up to a total of 2400 watts (or 4800 with mainframe extension). The MDL4U252 and MDL4U302 are dual-channel load modules.

The MDL4U252 can allocate up to 250 W to either channel up to 300 W total. (e.g. 250 W/50 W, 150 W/150 W).

Similarly, the MDL4U302 can allocate 300 W to either channel up to 600 W total (e.g. 300 W/300 W).

Model	MDL4U200	MDL4U252	MDL4U302	MDL4U305	MDL4U400	MDL4U505	MDL4U600
Power	200 W	*250 W / 50 W	*300 W / 300 W	300 W	400 W	500 W	600 W
Operating Voltage	80 V	80 V	80 V	80 V	80 V	80 V	80 V
Rated Current	40 A	20 A	45 A	20 A	60 A	30 A	120 A
No. of Channels	1	2	2	1	1	1	1

Mainframe Front Panel

Mainframe Rear Panel

High-performance architecture

Equipped with a high-performance microprocessor in every mainframe and module, the MDL4U Series programmable DC electronic load utilizes a parallel architecture that provides high measurement speed. Additionally, a simultaneous load on/off operation can be performed through the front panel, analog control terminal, or remote SCPI command. This configuration allows the system to control modules synchronously and increases productivity in testing.

Powerful communication interfaces

The MDL4U Series mainframe offers all the latest options to the user for remote communication. Connect via GPIB, Ethernet, USB, or RS232 to carry out data communication through SCPI and USBTMC standard communication protocols to control all your electronic load modules from a PC.

Modular design

With the removable module design, you can choose suitable load modules to modify the system according to your requirements. This design allows for multiple channels and is ideal for testing several units, especially power supplies with multiple outputs. At the same time, all load modules can be configured to work independently. All load modules, including the high power 500 W and 600 W modules can fit in one slot. Unlike competitor models that require two slots for high power modules, the MDL4U Series offers a one-slot form factor for all modules.

Adjustable slew rate

In constant current mode, users can control the rate or slope of the change in current in a transient response test. Set the slew rate to as slow as 0.0001 A/μs or as fast as 2.5 A/μs depending on the module and selected current range.

Transient operation

Transient operation enables the module to periodically switch between two load levels. A power supply’s regulation and transient characteristics can be evaluated by monitoring the supply’s output voltage under varying combinations of load levels, duty cycle, and slew rate. The MDL4U Series can simulate these conditions up to 25 kHz.

List mode

Not limited to just switching between two levels, list mode lets you generate more complex sequences of input changes with several different levels. Up to 7 groups of list files can be saved in the mainframe. Each list can contain up to 84 steps with a minimum width time of 20 μs per step.

Automatic test mode

The MDL4U Series can execute multiple test sequences across all channels. Sequences can be cascaded, and each step can be programmed with upper and lower limit values. When applied in automatic production testing, you can easily judge whether the test parameters of your devices are within the specification limits and adjust your process according to the GO/NG verdict.

Low Voltage Operation

The MDL4U Series can operate at low voltages for applications such as fuel cell and solar cell testing.

Typical minimum operating voltage at full-scale current:

MDL4U200	MDL4U252	MDL4U302	MDL4U305	MDL4U400	MDL4U505	MDL4U600
1 V	1 V	1.4 V	4.5 V	1.5 V	5.4 V	1.8 V

In The Box

Manuals/Guides

Manufacturer Specs

Model MDL4U305 Specifications
Input rating
Input Voltage		0 to 500 V
Input Current	Low	0 to 3 A
	High	0 to 20 A
Input Power		300 W
Channels		1
Minimum Operating Voltage	Low	0.7 V at 3 A
	High	4.5 V at 20 A
CV mode
Range	Low	0 to 18 V
	High	0 to 500 V
Resolution	Low	1 mV
	High	10 mV
Accuracy	Low	± (0.05% + 0.02% F.S.)
	High	± (0.05% + 0.025% F.S.)
CC mode
Range	Low	0 to 3 A
	High	0 to 20 A
Resolution	Low	0.1 mA
	High	1 mA
Accuracy	Low	± (0.05% + 0.05% F.S.)
	High	± (0.05% + 0.05% F.S.)
CR mode
Range	Low	0.25 Ω to 10 Ω
	High	10 Ω to 7.5 kΩ
Resolution		16 to bit
Accuracy	Low	0.01% + 0.08 S
	High	0.01% + 0.0008 S
CW mode
Range		300 W
Resolution		10 mW
Accuracy		± (0.2% + 0.2% F.S.)
Transient mode (CC mode)
T1&T2 ⁽²⁾		20 us to 3600 s / Res: 5 μs to 10 ms
Accuracy		5 μs + 100 ppm
Slew Rate ⁽³⁾	Low	0.0001 to 0.1 A/μs
	High	0.001 to 1 A/μs
(1) MDL4U252: The user can allocate 250 W to either channel up to 300 W total (e.g. 50 W/250 W, 250 W/50 W, 150 W/150 W). MDL4U302: The user can allocate 300 W to either channel up to 600 W total (e.g. 300 W/300 W). (2) Fast pulse trains with large transitions may not be achievable. (3) The slew rate specifications are not warranted, but are descriptions of typical performance. The actual transition time is defined as the time for the input to change from 10% to 90%, or vice versa, of the programmed current values. In case of very large load changes, e.g. from no load to full load, the actual transition time will be larger than the expected time. The load will automatically adjust the slew rate to fit within the range (high or low) that is closest to the programmed value.
Readback Voltage
Range	Low	0 to 18 V
	High	0 to 500 V
Resolution	Low	1 mV
	High	10 mV
Accuracy		± (0.025% + 0.025% F.S.)
Readback current
Range	Low	0 to 3 A
	High	0 to 20 A
Resolution	Low	0.01 mA
	High	0.1 mA
Accuracy	Low	± (0.05% + 0.05% F.S.)
	High	± (0.05% + 0.05% F.S.)
Readback power
Range		300 W
Resolution		10 mW
Accuracy		± (0.2% + 0.2% F.S.)
Protection range (typical)
OPP		300 W
OCP	Low	3.3 A
	High	22 A
OVP		510 V
OTP		185 ºF (85 ºC)
General (typical)
Short Circuit
Current (CC	Low	3 A
	High	20 A
Voltage (CV)		0 V
Resistance (CR)		220 mΩ
Input Terminal Impedance		1 MΩ
Safety		EN61010-1:2001, EU Low Voltage Directive 2006/95/EC
Electromagnetic Compatibility		Meets EMC Directive 2004/108/EC, EN 61000-3-2:2006, EN 61000-3-3:1995+A1:2001+A2:2005 EN 61000-4-2/-3/-4/-5/-6/-11, EN 61326-1:2006
Warranty		3 Year
Dimensions		3.2" x 7" x 22.6" (82 x 177.3 x 573 mm)
Weight		11 lbs (5 kg)

Tech Specs

Test Equipment General Attributes
Warranty	3 YEARS
Product Weight	11 LBS
Product Height	7 IN
Product Length	22.6 IN
Product Width	3.2 IN
Shipping Weight	12.7 LBS
HTS/Schedule B Number	8504.40.9530
ECCN Number	3A992
Country of Origin	China
UPC	817050960082

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BK Precision MDL4U305 - MDL4U Load Module (300W / 500V / 20A / 1 Channel)

Items in This Series

Description

BK Precision MDL4U305 - MDL4U Load Module (300W / 500V / 20A / 1 Channel)

MDL4U load modules

Mainframe Front Panel

Mainframe Rear Panel

High-performance architecture

Powerful communication interfaces

Modular design

Adjustable slew rate

Transient operation

List mode

Automatic test mode

Low Voltage Operation

In The Box

Manuals/Guides

Manufacturer Specs

Tech Specs

Test Equipment General Attributes

B&K Precision MDL4U305 Product Reviews

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