User Manual

31
Models
1900B
1901B
1902B
Efficiency
84% (110 VAC)
85% (230 VAC)
87% (110 VAC)
86% (230 VAC)
87% (110 VAC)
88% (230 VAC)
Switching Frequency
65 – 85 kHz
75 – 95 kHz
65 – 85 kHz
Tracking Overvoltage
Protections
O/P 1-5 V: set
voltage +2 V
O/P 5-16 V: set
voltage +3 V
O/P 1-5 V: set
voltage +2 V
O/P 5-20 V: set
voltage +3 V
O/P 20-32 V: set
voltage +4 V
O/P 1-5 V: set
voltage +2 V
O/P 5-20 V: set
voltage +3 V
O/P 20-60 V: set
voltage +4 V
Transient Response Time
(50-100% Load)
1.5 ms
Power Factor Correction
> 0.95 at optimal load
Cooling Method
Thermostatically controlled fan from zero to full speed
Protections
Overload, Short Circuit by Constant Current,
Overvoltage, Overtemperature
Special Features
3 User-Defined Voltage and Current Presets, Analog
Remote Control, Remote Sense (model 1900B only)
Operating Temperature
32 °F to 104 °F (0 °C to 40 °C) ≤ 80% R.H.
Storage Temperature
5 °F to 158 °F (-15 °C to 70 °C) ≤ 85% R.H.
Dimensions (WxHxD)
7.9” x 3.5” x 10.8” (200 x 90 x 275 mm)
Weight
7 lbs (3.2 kg)
Supplied Accessories
Power cord, instruction manual, USB cable, remote
control connector
Note: All specifications apply to the unit after a temperature stabilization time of 15
minutes over an ambient temperature range of 23 °C ± 5 °C. Specifications are
subject to change without notice.
*For 220 V version, please request -220V model on order: 1900B-220V, 1901B-220V,
or 1902B-220V.
For current up-to-date product information, please visit www.bkprecision.com