8502

Data Sheet DC Electronic Loads 8500 Series 2400W Versatile & Economical DC Electronic Loads 600 W - 1200 W The 8500 family offe rs 10 mode ls with a wide range of ratings The 8500 series Programmable DC Electronic Loads can be used for testing and evaluating a variety of DC power sources. Their wide operating ranges of up to 500 V and 240 A, flexible operating modes and excellent measurement accuracy make the 8500 series well suited for characterizing DC Power supplies, DC-DC Converters, batteries, fuel cells and solar cells. The loads can operate in CC, CV, CR or CP mode while voltage/current or resistance/power values are measured and displayed in real time. Load terminals are isolated and floating. Over temperature, over power, over voltage, over current and reverse polarity protection will help protect your valuable prototype and circuits. The DC loads are easy to use. All parameters can be set quickly and precisely from the front panel, or programmed via USB interface. Model Power Operating Voltage Rated Current 8500 300 W 0.1 - 120 V 30 A 8502 300 W 0.1 - 500 V 15 A 8510 600 W 0.1 - 120 V 120 A 8512 600 W 0.1 - 500 V 30 A 8514 1200 W 0.1 - 120 V 240 A 8518 1200 W 0.1 - 60 V 240 A 8520 2400 W 0.1 - 120 V 240 A 8522 2400 W 0.1 - 500 V 120 A 8524 5000 W 0.1 - 60 V 240 A 8526 5000 W 0.1 - 500 V 120 A When selecting a DC load, it is important to consider not only voltage and current requirements, but also power ratings. The power used when testing must fall within the hatched region for the appropriate DC load. Inpu t voltage R ated power I npu t cu rren t Technical data subject to change © B&K Precision Corp. 2018 300 W www.bkprecision.com Some applications may require high voltage/low current and low voltage/high current which a single load may not be able to handle. B&K Precision’s broad range of DC loads will allow you to select the optimal model for your requirements. DC Electronic Loads 8500 Series Features ■ Constant current (CC), resistance (CR), voltage (CV) and power (CP) operation ■ Wide voltage and current range, 0 to 500 V, 0 to 240 A (5000 W max) ■ Low minimum operating voltage of < 0.1 V and minimum input resistance of 5 mΩ (model 8518) allowing the load to sink high current at low voltages, required for fuel and solar cell applications ■ Selected models operate up to 500 V, suitable for high voltage applications ■ Built-in ■ Short transient generator circuit test ■ Built-in high resolution (0.1 mA/1 mV) voltage Applications: and current measurement (models 8500 & ■ DC 8502) ■ Characterization ■ Bright, easy to read display (VFD technology) ■ Over-Current/Over-Voltage/Over-Power/Over- to TTL serial converter cables and application software included ■ List of rechargeable batteries. A battery test mode is provided that will measure the ampere*hour (A*hr) characteristic of a battery Temperature Protection ■ USB power supply testing ■ Fuel ■ High and solar cell test voltage applications mode operation for increased throughput. ■ Battery testing mode to provide A*hr rating of battery (ending voltage level is adjustable) ■ Flexible triggering: Create trigger events by front panel keystroke, back panel TTL signal, or software ■ Remote voltage sensing to compensate for the effect of voltage drop in wires. ■ Store 25 instrument setups ■ Thermostatically-controlled fans allow operation in quiet environments with minimal disruption ■ All models are rack mountable. Compact 300 W and 600 W models for bench use 2 Low voltage operation The 8500 series can operate well below 1 V which is important for low voltage application such as fuel cell and solar cell testing. All models can regulate (provide a stable input) down to 0.1 V. Model 8518, due to its particularly low input resistance, can operate at full scale current of 240 A at 1.2 V (see image) Typical minimum operating voltage at full scale current: 8500 8502 8510 8512 8514 8518 8520 8522 8524 8526 1.05 V 3V 1.8 V 3V 1.92 V 1.2 V 10.8 V 3.6 V 1.56 V 1.8 V www.bkprecision.com DC Electronic Loads 8500 Series ▲ Front panel 1 2 The numeric keys and rotary knob provide a convenient interface for setting the operating mode and desired current/voltage/resistance levels quickly and precisely. Voltage and current can be set to a maximum resolution of 1 mV and 0.1 mA respectively (models 8500 and 8502 only). Up to 25 different instrument setups can be stored and recalled from internal memory. 1) High re sol ution, easy to read display Displays set values and measured values. Current/voltage and power/resistance displays can be toggled. Display resolution for current and voltage is user-selectable. Maximum resolution for model 8500 and 8502 is 1 mV/ 0.1 mA. 3 4 5 Hex-head screw terminals 2) Convenie nt data e ntr y Rotary knob for quick analog-style control. Turn to adjust a setting value. Press to toggle measurement display mode. 4) Function keys Activate current, voltage, power, or resistance modes and scroll through menus and options. 3) 5) Front panel load te rminals Connect to device under test. Hex-head screw Numer ic keyp ad Conveniently enter set values directly and access secondary functions. 1 ▲ Rear panel 1) Air vents Temperature-controlled fan expels air through these vents to keep the temperature constant inside the system. 3 ) Interface connection Serial interface connector for USB communication. 2) 4) Voltage switch Line voltage selection switch (110 VAC or 220 VAC). Tri gge r and remote sensing terminal block Connect sensing lines to this terminal to compensate for voltage drops due to load wire resistance. This terminal block also contains the two connections for the remote TTL trigger input signal. Terminals are used for models 8518 and 8520 – 8526 to connect wires. 3 3 2 4 www.bkprecision.com DC Electronic Loads 8500 Series ▲ Flexible operating modes C C, CR, C V and C P mode In Constant Current (CC) mode, the load will sink a current according to the programmed current value regardless of the input voltage. (CC) mode can be used for load regulation testing of DC power supplies or for characterizing the discharge profile of a battery. Constant Power (CP) mode simulates a load whose power consumption is independent of the applied voltage. Constant Power (CP) mode is useful for battery testing and simulating a realistic discharge curve. In Constant Voltage (CV) mode, the load will attempt to sink enough current to control the source voltage to the programmed value. This mode is suitable for testing battery chargers. In Constant Resistance (CR) mode, the load will sink a current linearly proportional to the input voltage in accordance with the programmed resistance. Unlike conventional resistors, the load resistance stays constant regardless of the power level. Transient g ene rator The 8500 series offers a variable frequency generator which can be used in all operating modes. The DC load will toggle between 2 preset levels at a frequency between 0.1 Hz to 1 kHz, either continuously or controlled by a trigger. Model 8500 Trigg ere d ope rati on Triggering is used to allow synchronization of the DC Load's behavior with other events. You can generate a trigger event by front panel keystroke, by applying an external TTL signal to the back panel terminal or by sending a commands over the serial bus. The trigger can be used in pulse mode, transient mode, list mode and works in CC, CR, CV and CP modes. ▲ Remote control & application software The DC loads can be remotely controlled from any PC with USB interface, allowing the user to fully program and monitor all parameters. USB to TTL serial converter cables are included. For users wanting to write their own custom software, a set of example programs are available for download on the B&K Precision website. List Mode A list of command sequences can be stored in non-volatile memory and executed independently of a computer. Execution in list mode greatly reduces command processing time and computer interaction during product testing. The command sequence can be entered manually from the front panel or downloaded from a PC via USB interface. Appl ication Software The included Application Software supports front panel emulation of the load and includes a battery test application which provides A*hr rating of a battery and adjustable ending voltage levels (safety voltage). 4 An example of battery discharge characteristics of an AA alkaline battery. Whether you are designing a device with Nickel-Metal Hydride or Lithium-Ion batteries, the 8500 series have the capabilities to test their characteristics. www.bkprecision.com DC Electronic Loads 8500 Series Specifications Specifications ▲ Models 8500 & 8502 (300 W) Parameter Voltage Current Power Input rating 8500 8502 0 – 120 V 0 – 30 A 0 – 500 V 0 – 15 A 300 W Range Parameter 8500 Accuracy 8502 0.1-18 V ±(0.05%+0.02% FS) 1 mV ±(0.05%+0.025% FS) 10 mV 0–3A ±(0.1%+0.1% FS) 0.1 mA 0 – 15 A ±(0.2%+0.15% FS) 1 mA 0.1 mA 0 – 15 A ±(0.1% + 0.1% FS) 8500: ±(0.2%+0.15% FS) 8502: ±(0.2%+0.3% FS) ±(0.02% + 0.02% FS) 0 – 500 V ±(0.02% + 0.025% FS) 10 mV CV Mode Regulation 0.1 – 120 V CC Mode Regulation 0–3A 0 – 30 A 0–3A 0–3A 0 – 30 A Current Measurement 0.1 – 500 V 0-18 V Voltage Measurement 0-120 V Resolution 1 mA 1 mV ▲ Models 8510/8512/8514/8518 (600 W & 1200 W) Parameter Voltage Current Power Input rating Parameter 8510 8512 8514 8518 0 – 120 V 0 – 120 A 0 – 500 V 0 – 30 A 0 – 120 V 0 – 240 A 0 – 60 V 0 – 240 A 600 W 1200 W Range 8510 8512 8514 CV Mode Regulation CC Mode Regulation 0-12 A Current Measurement 0-12 A 8518 Resolution 0.1-18 V ±(0.05%+0.02% FS) 1 mV 0.1 V to Vmax ±(0.05%+0.025% FS) 10 mV 0-3 A 0-24 A 0 – max Current 0-3 A 0-24 A 0 – max. Current 0 – 18 V Voltage Measurement Accuracy 0 - Vmax ±(0.1%+0.1% FS) 1 mA ±(0.2%+0.15% FS) 10 mA ±(0.1% + 0.1% FS) 1 mA ±(0.2%+0.15% FS) 8510/8514: (0.02% + 0.025% FS) 8512/8518: (0.02% + 0.02% FS) ±(0.02% + 0.025% FS) 10 mA 1 mV 10 mV ▲ Models 8520/8522/8524/8526 (2400 W & 5000 W) Parameter Voltage Current Power Input rating Parameter 5 8522 8524 8526 0 – 500 V 0 – 120 A 0 – 60 V 0 – 240 A 0 – 500 V 0 – 120 A 2400 W 5000 W Range 8520 8522 8524 CV Mode Regulation CC Mode Regulation 0-24 A Current Measurement 0-24 A Voltage Measurement 8520 0 – 120 V 0 – 240 A 8526 Accuracy Resolution 0.1-18 V ±(0.05%+0.02% FS) 1 mV 0.1 V to Vmax ±(0.05%+0.025% FS) 10 mV 0-12 A 0-24 A 0-12 A 0 – max Current 0-12 A 0-24 A 0 – max. Current 0 – 18 V 0 - Vmax 0-12 A ±(0.1%+0.1% FS) 1 mA ±(0.2%+0.15% FS) 10 mA ±(0.1% + 0.1% FS) 1 mA ±(0.2%+0.15% FS) 8522/8526: (0.02% + 0.02% FS) 8520/8524: (0.02% + 0.025% FS) ±(0.02% + 0.025% FS) 10 mA 1 mV 10 mV www.bkprecision.com DC Electronic Loads 8500 Series ▲ Common characteristics Parameter CR Mode Regulation (Input current ≥FS 10% Input voltage≥FS 10%) Range Accuracy Resolution 0.1 -10 Ω ±(1%+0.3% FS) 0.001 Ω 10-99 Ω 0.01 Ω ±(1%+0.3% FS) 100-999 Ω 0. 1 Ω ±(1%+0.3% FS) 1K-4 KΩ ±(1%+0.8% FS) 1Ω CW Mode Regulation (Input current ≥FS 10% Input voltage≥FS 10%) 0-100 W ±(1%+0.1% FS) 1 mW 100 W - max power ±(1%+0.1% FS) 100 mW 0-100 W ±(1%+0.1% FS) 1 mW 100 W - max power ±(1%+0.1% FS) 100 mW Power Measurement (Input current ≥ FS 10% Input voltage ≥ FS 10%) Other Battery testing function Input = 0.1 V – 120 V, Max measurement capacity = 999 Ah Resolution = 10 mA, Timer range = 1-60000 sec Transition mode Range of Frequency 0.1 Hz-1 kHz, Frequency error rate 0.5% AC input 110 / 220 (see note below)* VAC ± 10%, 47 – 63 Hz Operating temperature 32 ºF - 104 ºF (0 - 40 ºC) Storage temperature 50 ºF - 140 ºF (10 - 60 ºC) Humidity ≤ 95% relative humidity, non-condensing Safety EN61010-1:2001, EU Low Voltage Directive 73/23/EEC amended by 93/68/EEC Electromagnetic compatibility Meets EMC Directive 89/336/EEC amended by 93/68/EEC, EN50081-1, EN50082-1 One-Year Warranty * All 8500 series models, with the exception of models 8524 and 8526, can be configured for 110 V or 220 V operation via the AC line switch in the rear panel. Base models 8524 and 8526 operate with 110 V only. For 220 V operation, order model 8524-220V or 8526-220V respectively. “-220V” denotes 220 V operation only and these models cannot be reconfigured for 110 V operation. ▲ Mechanical specifications Model Dimensions (W x H x D) Weight 8500 8.46” x 3.46” x 14.1” (215 mm x 88 mm x 359 mm) 11.5 lb (5.2 kg) 8502 8.46” x 3.46” x 14.1” (215 mm x 88 mm x 359 mm) 11.5 lb (5.2 kg) 8510 17.3” x 3.46” x 18.07” (439.6 mm x 88 mm x 459 mm) 31 lb (14 kg) 8512 17.3” x 3.46” x 18.07” (439.6 mm x 88 mm x 459 mm) 31 lb (14 kg) 8514 17.3” x 3.46” x 18.07” (439.6 mm x 88 mm x 459 mm) 31 lb (14 kg) 8518 17.3” x 3.46” x 18.07” (439.6 mm x 88 mm x 459 mm) 31 lb (14 kg) 8520 17.64” x 7.28” x 21.19” (448 mm x 185 mm x 538.2 mm) 66 lb (30 kg) 8522 17.64” x 7.28” x 21.19” (448 mm x 185 mm x 538.2 mm) 66 lb (30 kg) 8524 17.54” x 14.06” x 20.94” (445.5 mm x 357 mm x 532 mm) 148 lb (67 kg) 8526 17.54” x 14.06” x 20.94” (445.5 mm x 357 mm x 532 mm) 148 lb (67 kg) ▲ Accessories Standard Optional 6 v032318 Power cord, user manual, installation CD with application software, USB to TTL serial converter IT-E132B, certificate of calibration and test report Rack mount kit IT-E151 for models 8500, 8502, 8510, 8512, 8514 and 8518 only www.bkprecision.com