Manual
4 ww w.bk precision.com
Modular Programmable DC Electronic Load
MDL Series
Specifications
Model MDL200 MDL252 MDL305 MDL400 MDL505 MDL600
Input rat ings
Input Voltage 0-80 V 0-80 V 0-500 V 0-80 V 0-500 V 0-80 V
Input Current
Low 0-4 A 0-3 A 0-3 A 0-6 A 0-3 A 0-12 A
High 0-40 A 0-20 A 0-20 A 0-60 A 0-30 A 0-120 A
Input Power 200 W
250 W
1
300 W 400 W 500 W 600 W
Channels 1 2 1 1 1 1
Minimum
Operating Voltage
Low 0.10 V at 4 A 0.15 V at 3 A 0.7 V at 3 A 0.15 V at 6 A 0.54 V at 3 A 0.18 V at 12 A
High 1 V at 40 A 1 V at 20 A 4.5 V at 20 A 1.5 V at 60 A 5.4 V at 30 A 1.8 V at 120 A
CV mode
Range
Low 0-18 V
High 0-80 V 0-80 V 0-500 V 0-80 V 0-500 V 0-80 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 0-4 A 0-3 A 0-3 A 0-6 A 0-3 A 0-12 A
High 0-40 A 0-20 A 0-20 A 0-60 A 0-30 A 0-120 A
Resolution
Low 0.1 mA 1 mA 0.1 mA
High 1 mA 10 mA 1 mA
Accuracy
Low ± (0.05 % + 0.05 % F.S.) ± (0.05 % + 0.1 % F.S.)
High ± (0.05 % + 0.05 % F.S.) ± (0.1 % + 0.1 % F.S.)
CR mode
Range
Low 0.05 Ω-10 Ω 0.05 Ω-10 Ω 0.25 Ω-10 Ω 0.05 Ω-10 Ω 0.2 Ω-10 Ω 0.2 Ω-10 Ω
High 10 Ω-7.5 kΩ
Resolution 16-bit
Accuracy
Low 0.01 % + 0.08
S
High 0.01 % + 0.0008
S
CW mode
Range 200 W 250 W 300 W 400 W 500 W 600 W
Resolution 10 mW
Accuracy ± (0.2 % + 0.2 % F.S.)
Transient mode (CC mode)
T1&T2 20 us-3600 s / Res: 5 µs-10 ms
Accuracy 5 µs+100 ppm
Slew Rate
2
Low 0.0001-0.25 A / µs 0.0001-0.2 A / µs 0.0001-0.1 A / µs 0.0001-0.25 A / µs 0.0001-0.1 A / µs 0.0001-0.25 A / µs
High 0.001-2.5 A / µs 0.001-2 A / µs 0.001-1 A / µs 0.001-2.5 A / µs 0.001-1 A / µs 0.001-2.5 A / µs
1)
MDL252: The user can allocate up to 250 W to either channel up to 300 W total (e.g. 50 W/250 W, 250 W/50 W, 150 W/150 W).
2)
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.