BK 8600 Series Rackmount 6U Programmable DC Electronic Load

Description

The BK 8625 is part of the BK 8600 Series Rackmount 6U Programmable DC Electronic Loads. This model is the 6U version (2U half-rack, and 3U alternatives are also available).

The BK 8600 Series offers exceptional transient response times and high 16-bit measurement resolution, making them the ideal standalone DC loads for testing and evaluating a wide range of DC sources, including DC power supplies, DC-DC converters, batteries, battery chargers, and photovoltaic arrays.

Designed for versatility, these DC loads operate in four distinct modes: constant current (CC), constant voltage (CV), constant resistance (CR), and constant power (CW). They can be dynamically configured to provide rapidly changing loads to DC sources, featuring quick load switching times. The robust internal, external, and remote triggering options allow for seamless synchronization of dynamic load behavior with various events. To maximize efficiency, you can easily save your test parameters in any of the 100 available memory slots for quick retrieval when needed. All load parameters—voltage, current, slew rate, and width—can be easily adjusted via the front panel or programmed remotely.

The BK 8625 model comes equipped with standard USB (USBTMC-compliant), RS232, and GPIB interfaces for straightforward remote communication.

To ensure reliable testing, this series features a power-on system self-test along with a comprehensive suite of protection features, including overtemperature protection (OTP), overvoltage protection (OVP), overcurrent protection (OCP), overpower protection (OPP), and local/remote reverse voltage protection (LRV/RRV).

Product Features

Input Power: 6000 W
Input Voltage: 120 V
Input Current range: 0 – 720 A
Operating modes: CC/CV/CR/CW
Adjustable slew rate in CC mode
Transient mode: up to 25 kHz
List mode function, battery test function, automatic test mode, CR-LED mode
Standard USB (USBTMC-compliant), RS232 interfaces supporting SCPI commands and GPIB
Protection features: OVP/OCP/OPP/OTP, including local and remote reverse voltage (LRV/RRV) protection

Model		BK 8625
Input Ratings
Input Voltage		0 - 120 V
Input Current	Low	0 - 72 A
	High	0 - 720 A
Input Power		6000 W
Minimum Operating Voltage	Low	0.18 V at 72 A
	High	1.8 V at 720 A
CV Mode
Range	Low	0.1 - 18 V
	High	0.1 - 120 V
Resolution	Low	1 mV
	High	10 mV
Accuracy	Low	±(0.025% + 0.05% FS)
	High	±(0.025% + 0.05% FS)
CC Mode
Range	Low	0 - 72 A
	High	0 - 720 A
Resolution	Low	1 mA
	High	10 mA
Accuracy	Low	±(0.025% + 0.05% FS)
	High	±(0.025% + 0.05% FS)
CR Mode
Range	Low	0.005 Ω – 10 Ω
	High	10 Ω - 7.5 kΩ
Resolution		16 bit
Accuracy (I>10% of range)	Low	0.01% + 0.08 S (12.5 Ω)
	High	0.01% + 0.0008 S (1250 Ω)
CW Mode
Range		6000 W
Resolution		100 mW
Accuracy		0.2% + 0.2% FS
Transient Mode (CC Mode)
T1 & T2 *1		20 µs – 3600 s / Resolution: 10 µs
Accuracy		5 µs + 100 ppm
Slew Rate *2	Low	0.001-0.25 A/µs
	High	0.01-2.5 A/µs
Readback Voltage
Range	Low	0 - 18 V
	High	0 - 120 V
Resolution	Low	1 mV
	High	10 mV
Accuracy		±(0.025% + 0.025% FS)
Readback Current
Range	Low	0 - 72 A
	High	0 - 720 A
Resolution	Low	1 mA
	High	10 mA
Accuracy		±(0.05% + 0.1% FS)
Readback Power
Range		6000 W
Resolution		100 mW
Accuracy		±(0.2% + 0.2% FS)
Protection Range (Typical)
OPP		6050 W
OCP	Low	79.2 A
	High	792 A
OVP		130 V
OTP		85 °C
Short Circuit (Typical)
Current (CC)	Low	79.2 A
	High	793 A
Voltage (CV)		0 V
Resistance (CR)		2.5 mΩ
General (Typical)
Input Terminal Impedance		300 kΩ
AC Input		110 V/220 V ±10%, 50/60 Hz
Operating Temperature		0 °C to 40 °C
Storage Temperature		-10 °C to 60 °C
Humidity		Indoor use, ≤ 95%
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
Dimensions (W x H x D)		439 x 266 x 590 mm
Weight		64.4 kg
Warranty		3 Years
Standard Accessories		User manual, power cord, certificate of calibration
Optional Accessories		TLPWR1 high current test leads

*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.