B&K Precision DML Modular Programmable DC Electronic Load System

B&K Precision DML Multi-channel Modular DC Electronic Load System is a versatile multi-channel modular DC electronic load system capable of sinking up to 800W in a compact bench form factor. The mainframe features two slots for housing any combination of single- or dual-channel load modules. With five swappable modules, the B&K Precision DML series offers the flexibility to test a wide range of power sources, including multi-output DC power supplies, batteries, fuel cells, and photovoltaic arrays. This DC electronic load system features constant current (CC), constant voltage (CV), constant resistance (CR), and constant power (CW) operating modes. The series also offers fast transient operation and sweep modes for dynamic load conditions. The DML features an intuitive front-panel interface for independent control of each module, enabling quick adjustment of key parameters. Instrument settings and test configurations can be saved directly to internal memory for quick recall. Comprehensive built-in protections and automatic power-on self-test ensure stable and reliable operation.

Features

Up to 800W power range
Up to 160A current range with parallel operation
CC/CV/CR/CW operating modes
Swappable modules for easy system configurability
Supports up to four channels using dual-channel modules
Overcurrent (OCP), overvoltage (OVP), overpower (OPP), overtemperature (OTP), undervoltage (UVP), and reverse polarity protections
Operate up to four channels in parallel for increased current
Rack-mount brackets with handles included
Analog current control and monitoring
Up to 25kHz transient mode in CC mode

Configurable battery discharge test
List mode (sequence mode) - 20μs minimum step width with 100 user-programmable steps
Adjustable slew rate in CC mode
16-bit voltage and current measurement system, providing 0.1mV and 0.01mA high resolution
Remote sense to compensate for voltage drop
4U form factor
LabVIEW™ drivers and operating software included
Standard LAN, GPIB, USB, and RS232 interfaces with USBTMC/SCPI protocol support

Applications

Multi-output DC power supplies
Batteries

Fuel cells
Photovoltaic arrays

Specifications

0V to 80V input voltage
Minimum operating voltage
- Low
  - 0.5V at 0.2A (DML102 and DML202)
  - 0.5V at 0.4A (DML200)
  - 0.5V at 0.6A (DML301)
  - 0.4V at 0.8A (DML400)
- Medium
  - 0.5V at 2A (DML102 and DML202)
  - 0.5V at 4A (DML200)
  - 0.4V at 8A (DML301 and DML400)
- High
  - 0.5V at 20A (DML102 and DML202)
  - 0.5V at 40A (DML200)
  - 0.4V at 80A (DML301 and DML400)

Input current
- 0A to 20A (DML102 and DML202)
- 0A to 40A (DML200)
- 0A to 60A (DML301)
- 0A to 80A (DML400)
Channels
- One (DML200, DML301, and DML400)
- Two (DML102 and DML202)