Additional Features: Power Rating: 2000 W (units before 2004) 2600 W (units after 2004) Voltage Range: 0-80 V Current Range: 0-300 A Only need 1V to draw rated current Measurement: Voltage/Current/Power/Resistance Large LED/LCD display External loading waveform simulation Short circuit simulation and short circuit current measurement Full protection: OC, OP, OT protection and OV, reverse alarm Versatile remote controller GPIB & RS-232 interfaces Surge load capability Battery discharge timer Specifications Power: 260W; 2000W or 2600W Current 0~30A; 0~300A Voltage: 0~80V Min. Operating voltage: 0.5V @ 15A; 0.5V @ 150A; 1V @ 30A; 1V @ 300A Constant Current mode Range 0~30A; 0~300A Resolution 7.7mA; 77mA Accuracy 0.1%+0.1%F.S.; 0.2%+0.1%F.S. Constant Resistance Mode Range 0.005~20Ω; 0.25~1000Ω Resolution: 52mS; 1.04mS Accuracy: 0.104S+0.35%; 0.9S+0.1% Accuracy (Vin>7V): 0.104S+0.35%; 0.0021S+0.35% Constant Voltage mode Range: 0~16V; 0~80V Resolution: 4mV; 20mV Accuracy: 0.05%+0.1%F.S. Constant Power mode Range: 0.6~260W; 6~2000W; or 6~2600W Resolution: 7.5mW; 75mW Dynamic mode Timing T1&T2: 0.025~10ms; 1ms~30s Resolution: 1μs; 1ms Accuracy: 1μs+100ppm; 1ms+100ppm Slew rate: 5mA~1.25A/μs; 50mA~12.5A/μs Resolution: 5mA/μs; 50mA/μs Accuracy: 10% ± 20μs Min. Rise Time: 24μs (typical) Current Range: 0~30A; 0~300A Resolution: 7.7mA; 77mA Accuracy: 0.4%F.S. Measurement Voltage Read Back Range: 0~16V; 0~80V Resolution: 0.6mV; 2.6mV Accuracy: 0.05%+0.05%F.S. Current Read Back Range: 0~30A; 0~300A Resolution: 1mA; 10mA Accuracy: 0.1%+0.1%F.S. Power Read Back Range: 0~260W; 0~2000W; or 0~2600W Accuracy: 0.3%+0.3%F.S. Current: 30A; 300A Input Rating: 1Ø 100/200Vac ± 10% VLN, 47~63Hz; 1Ø 115/230Vac ± 10% VLN, 47~63Hz Dimension (H x W x D): 177 x 440 x 589 mm / 6.9 x 17.3 x 23.2 inch Weight: 30 kg / 66.13 lbs Safety & EMC: CE Chroma's 63200 series of programmable electronic loads are designed for a wide variety of dc power conversion products including; DC power sources, battery chargers, server power supplies, dc-dc converters, batteries and many others. The high power rating, parallel and synchronization capabilities, and the ability to provide up to 2.7 times of rated power for short duty cycle loading make 63200 series especially well-suited for high power applications such as switch-mode rectifiers and for discharging batteries packs and fuel cells. By paralleling modules very large systems can be assembled existing 93.6kW. Four operating modes provide different load simulation methods designed for various applications. The CC/CR modes are designed to test constant voltage power supplies and converters. CV mode simulates the battery for testing battery chargers and current sources, and CP mode is ideal for battery testing by simulating real discharge profiles. With it's unique external waveform simulation and Master/Slave control capability, the 63200 series electronic loads allow users to parallel and synchronize more than one load together using an internal or external loading control signal. This feature provides unlimited load simulation and increased power. The 63200 series also provides necessary measurement functions and short circuit simulations that extend the test capability for the most demanding engineering and automated test applications. With front LCD displays and rotary knob, the 63200 loads offer versatile bench top operation. Users are also able to control the loads remotely via GPIB or RS-232 interface or with a USB adapter. Complex waveforms can also be created by driving the loads from an analog programming source (i.e. function generator) Chroma 63200 loads incorporate built-in fan speed controls to minimize audio noise. The self-diagnosis routines, built-in protection against OC, OP, OT, and an alarm indicating OV reverse polarity to ensure safe operation and reliability. Application Specific Load Simulation Chroma's 63200 series electronic loads provide constant current, constant resistance, constant voltage and constant power modes. The CC and CR mode load simulation is helpful to test whether the output voltage of the UUT remains stable, or regulated under different load conditions. For battery chargers, CV mode can change the output voltage to test if the battery charger is providing the correct charging current corresponding to the battery voltage. If the UUT is a battery, the electronic load is able to simulate the behavior of the device that uses the battery. For many battery discharge applications, power consumption patterns need to be analyzed. The constant power, or CP mode, is ideal for these applications. Low Voltage Operating Characteristics For low voltage/high current applications, the 63200 series is available with a low voltage mode, which provides ultra-low voltage operation and in many cases can compensate for large voltage loss in the input wiring. The 63200 series loads use a current closed loop design connecting all power MOSFET devices in parallel, to insure high accuracy load control with minimal drift (less than 0.15% of the current setting). The MOSFET technology keeps the input impedance to a minimum and enables the load to draw very high current even at very low voltages. For example, the model 63209 is capable of drawing 1,000A at only 1V input. Measurements The Chroma 63200 series loads have a built-in 15-bit precision A/D converter that can achieve 0.05%+0.05% F.S., 0.1%+0.1% F.S. and 0.3%+0.3% F.S. accuracy for voltage, current, and power measurements respectively. These measurements can be displayed simultaneously on three big LED readouts for convenience. In addition to standard measurements, the 63200 series also provides voltage and current monitor outputs, which are useful when the user needs to monitor the voltage and current waveform via a scope. Dynamic Loading and Control Modern electronic devices operate at very high speeds; therefore, it is important for an electronic load to perform well during the transient and dynamic testing. To satisfy these testing applications, the 63200 loads offer outstanding high speed, programmable dynamic load simulation and control capabilities. The figure below shows the programmable parameters of the 63200 load modules. The programmable slew rate makes the simulation of transient load changes demanded by the requirement of real life application possible. The internal waveform generator of the 63200 is capable of producing a maximum slew rate of 25A/μs (63208), and dynamic cycling up to 20kHz. Its dedicated remote load sense and control circuitry guarantee the minimum waveform distortion during continuous load changes. Master/Slave Parallel Control When higher power is required, it is common to parallel two electronic loads together to draw higher current. The 63200 series high power loads have a smart Master/Slave control mode. When the loads are set to Master/Slave mode, users can program the loading (CC mode only) on the master unit. The loading current values of the slave unit(s) will be calculated and downloaded by the master unit automatically. In short, unlike traditional designs, users now have the option of operating several loads in Master/Slave mode as a single load unit. External Loading Waveform Simulation The 63200 series electronic loads can be controlled by an external analog control signal, which is generated by any kind of signal or an arbitrary waveform generator. This makes it capable of simulating any loading waveform observed in the field within the load specifications. Short Circuit Simulation Chroma's 63200 series electronic loads can also simulate a short circuit condition. The load can short a DC power source or any power supply that has a built in current limit function and measure its short circuit current so that users can verify if the UUT current limit is functional. Surge Load Capability Chroma's 63200 Series DC Loads provide a unique surge load simulation capability which allows users to overdrive the loads up to 2.7 times their rated power for short periods. This feature is ideal when the average power required by the UUT is low compared to short-term peak power demands. Plasma Display Panel (PDP) testing is one typical applications, others include battery 3C discharge, breaker & fuse over rating (300% to 1000%) tests, car engine startup simulation and DC motor startup simulation. Static Loading The Model 63201 can be overdriven to approximately 5200W (200% of its rated continuous power rating) for 6.0 ms when the starting power is 650W (25% of its rated power). Dynamic Loading The Model 63201 is capable of a zero - to- 6500W (250%) pulse at a duty cycle of 5%. Timer Function for Battery Discharge Testing The 63200 loads include a unique timing and measurement function. This allows for precision time settings and measurements in the range of 1s to 99,999s. This feature also allows users to set a final cutoff voltage and timeout value for battery discharge testing and similar applications. For example, the figure to the right shows that the 63200's internal timer can be initiated automatically when starting load on. The timer will stop counting until the cutoff voltage value is reached, or timeout occurs. Softpanel The 63200 series can be operated from the front panel or controlled by softpanel software. The user friendly software includes all the functions of 63200 series, and is easy to understand and operate. The 63200 series can be configured with either GPIB or RS-232 interfaces as an option for remote control and automated testing applications. Applications: Power Supply Testing Power supplies play a critical role in electrical and electronic devices. They have diversified into several different configurations for various applications. For example, AC/AC power supplies are used for UPS and AVR, AC/DC power supplies are used for server power supplies, and DC/AC power supplies are used for inverters that transfer battery power to AC for home appliances. Lastly, DC/DC converters are widely used in battery powered devices such as cellular phones and laptop computers. With four different load modes, Chroma 63200 series electronic loads are capable of testing many different DC output power supplies either directly or via a rectifier. They can also be used to test AC output power supplies. Electronic & Electrical Devices Testing Almost all modern electronic equipment has a built in power supply. Therefore, a DC electronic load is an important instrument for these devices during the R/D and Q/A phases. For example, A/D, D/D and D/A stages are normally integrated within a UPS. The Chroma 63200 electronic loads are helpful in testing the internal A/D and D/D boards of UPS devices. Battery Testing For most applications, power consumption patterns are based on constant power. Therefore, the CP mode of the 63200 series electronic load is ideal to use as a discharge load for battery testing. System integration Chroma 63200 series electronic loads provide GPIB, RS-232 and RS-485 PC controllable interfaces. These features combined with the external waveform simulation and voltage / current monitoring capability make Chroma 63200 series ideal for automatic system integration.