BK Precision 8500B Series - Specifications; Input and Mode Specifications

Specications
Programmable DC Electronic Loads
8500B Series
6
www.bkprecision.com
Specifications
Model 8542B 8500B 8502B 8510B 8514B
Input ratings
Input voltage 0 to 150 V 0 to 150 V 0 to 500 V 0 to 120 V 0 to 120 V
Input current
Low 0 to 3 A 0 to 3 A 0 to 3 A 0 to 12 A 0 to 24 A
High 0 to 30 A 0 to 30 A 0 to 15 A 0 to 120 A 0 to 240 A
Input power 150 W 300 W 300 W 600 W 1500 W
Minimum operating voltage
Low 0.25 V at 3 A 0.14 V at 3 A 0.6 V at 3 A 0.2 V at 12 A 0.25 V at 24 A
High 2.5 V at 30 A 1.4 V at 30 A 3 V at 15 A 2 V at 120 A 2.5 V at 240 A
CV mode
Range
Low 0.1 to 18 V 0.1 to 50 V 0.1 to 18 V
High 0.1 to 150 V 0.1 to 500 V 0.1 to 120 V
Resolution
Low 1 mV
High 10 mV
Accuracy
Low ±(0.05% + 0.02% FS)
High ±(0.05% + 0.025% FS)
CC mode
Range
Low 0 to 3 A 0 to 3 A 0 to 12 A 0 to 24 A
High 0 to 30 A 0 to 15 A 0 to 120 A 0 to 240 A
Resolution
Low 0.1 mA 1 mA 1 mA
High 1 mA 10 mA 10 mA
Accuracy
Low ±(0.05% + 0.05% FS)
High ±(0.05% + 0.05% FS)
CR mode
Range
Low 0.05 Ω to 10 Ω 0.3 Ω to 10 Ω 0.05 Ω to 10 Ω 0.05 Ω to 10 Ω
High 10 Ω to 7.5 kΩ 10 Ω to 7.5 kΩ 10 Ω to 7.5 kΩ 10 Ω to 7.5 kΩ
Resolution 16 bit
Accuracy
Low 0.01% + 0.08 S (0.01% + 12.5 Ω)
High 0.01% + 0.0008 S (0.01% + 1250 Ω)
CW mode
Range 150 W 300 W 300 W 600 W 1500 W
Resolution 10 mW 10 mW 10 mW 10 mW 10 MW
Accuracy ±(0.2% + 0.2% FS) ±(0.1% + 0.1% FS) ±(0.2% + 0.2% FS)
Transient mode (CC mode)
T1 & T2
(1)
50 µs to 3600 s/Resolution: 1 µs 100 µs to 3600 s/Resolution: 1 µs
Accuracy 5 µs ± 100 ppm 10 µs ± 100 ppm
Slew rate
(2)
Low 0.0001 to 0.2 A/µs 0.0001 to 0.2 A/µs 0.001 to 0.2 A/µs 0.001 to 0.3 A/µs
High 0.001 to 1 A/µs 0.001 to 0.8 A/µs 0.001 to 0.4 A/µs 0.01 to 0.8 A/µs
Note: All specifications apply to the unit after a temperature stabilization time of 30 minutes over an ambient temperature range of 23 °C ± 5 °C.
(1)
Fast pulse trains with large transitions may not be achievable.
(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.