IT8924-1200-480 (24000W, 1200V/480A, Measurement Resolution 10mV/1mA, 1-Ch High Performance and High Power Programmable DC Electronic Load)

產品功能

• Up to 50kHz high speed for voltage and current measurements: The IT8900 Series with high performance characteristics, high resolution 1mV/1mA in max and 50kHz measurement speed will all increase the testing speed and accuracy.  In application such as solar battery testing. as solar battery’s IV feature will change with the different environment temperature, illumination radiation, and luminous intensity, the solar battery IV feature must be multiple-points tested within short period of time, which request the loads to be able to high speed measure.  The IT8900 Series can measure 250 points of the solar battery IV curve within 5ms, using together with IT9380 solar battery test software, the users can set the measurement voltage, and the software will acquire the data within the specified range automatically (See photo section)
• Master-slave paralleling, maintains stand-alone functions: The IT8900 Series support master-slave paralleling for same models, to expand power up to 600kW.  The user operates on master panel and the slave unit will be distributed automatically, simple to use.  Master-slave paralleling can achieve stand-alone functions, traditional paralleling is not workable under CV mode.  However the IT8900 Series can parallel under CC/CV modes innovatively.  The IT8900 Series are mainly applicable in the fields of DC charging station, power battery, high voltage UPS and military high power DC motor tests (See photo section)
• 4 basic load operation modes: The IT8900 Series provide constant voltage, constant current, constant resistance and constant power modes to meet the test needs from customers (See photo section)
• CV + CC mode: CV + CC mode is a newly increased mode for operation.  It can help engineer solve the transient surge current problem and avoid DUT trigger or DUT burned problem in application testing, for example, in charging station testing, under CV working mode, electronic load will rising up to 700V, current value will suddenly rise up because current rising speed is too fast, the result is that charging station will OCP so that no output from charging station, to avoid the similar problem.  We can use CV + CC mode to set CC (I-Limit) value, setting interior current value will no more than OCP value in charging station, it can effectively avoid the current surge and solve the OCP problem (See photo section)
• CR-LED (CC + CR) mode: The IT8900 Series CR-LED (CC + CR) mode can supply LED power drive testing and be applied in led current simulation, to simulate the ripple in real testing, CR-LED can improve speed and stability for control loop, it can solve the voltage and current jitter problem in LED driver testing.  Furthermore, the IT8900 Series can increase frequency width, it can help users to achieve PWM dimmer testing (See photo section)
• Dynamic mode as up to 25kHz in continuous transient operation: The transient test allows switching between two different load values. The function is used to test the dynamic characteristic of power supply (See photo section)
• OCP & OPP tests: OCP and OPP test functions are particularly suitable for over-circuit and over-power point tests of products such as lithium battery protection module and power module.  Through built-in OCP and OPP functions, the user can set such parameters as the initial current, cutoff current, step current, lasting time of each step current and the voltage drop value for judgment of protection of built-in OCP program for test.  This will finally help users to automatically obtain over-current or over-power protection point and to judge if it is within the scope.  The user can use it for design validation and production line system to save test time and improve test efficiency (See photo section)
• List mode:  Not limited to just switching between two levels, the List mode helps you generate more complex sequences of input changes with several different levels (See photo section)
• Adjustable rising/falling speed of current by List mode: List mode allows you to generate a complex current sequence.  Moreover, the mode change can be synchronized with an internal or external signal, to accomplish dynamic and precise test.  The List function can make many kinds of complex sequences, to meet complicated test requirements.  The slope range is 10A/µs in max (See photo section)
• Adjustable CV loop speed: Sometimes load loop speed is too fast or too slow to match some slow or high speed power supply features, result is testing value will vibrated.  This problem can be well solved with the IT8900 Series, when appear mismatch situation, users can adjust interior CV loop speed with “High-rate” or “Low-rate” to achieve the best matching point.  This function can conveniently help customers solve the different matching problems.  Even it can save the cost and improve testing efficiency, after a simply setting up, one electronic load will meet the multi complicated DUT testing, CV high-low rate testing: power supply: IT6015 setting up: 60V/1A Blue is voltage waveform, green is current waveform (See photo section)
• Transient over power loading capability: This will make load to take over power loading capability in short time, users no need to select types as maximum power value, it can extremely save cost..  This function can be widely used the DUT transient peak power supply ability. Such as DC motor start-up simulation, start transient power will be several times of common working power, or else, it can simulate power supply’s transient over load features, application in discharging for high power battery in transient time
• Voltage rising/falling time test: The IT8900 Series provide unique measurement function to test voltage rising/falling time.  It can calculate the time from one voltage to another voltage without the need of oscilloscope
• Measure function: The IT8900 Series provide Measure function, mainly used for measuring the rising and falling time of voltage or current within a specified range
• Current monitoring function: The IT8900 Series allow the users to monitor actual current through I-monitor terminal.  Users could connect an oscilloscope to observe the actual current.  It will generate at 0-10V analog signal to represent to 0-100% rated current of the front panel
• Support Living and Latch modes: The IT8912E Series support with loading voltage setting and it offers two kinds of load modes.  Choosing Living means working goes after status.  When choosing Latch, it means work load point latch with loading status.  It can meet different test requirements (See photo section)
• PWM dimming test: The IT8900 Series can increase frequency width to help users achieve PWM dimmer testing
• Battery discharge test function: The IT8900 Series test the battery capability in CC mode.  Make a program to set the stop conditions.  There are three stop conditions can be chosen:  stop voltage, stop capacity and stop timer.  The discharge process of electronic load is terminated if the system checks the battery reaches the specified value or under an insecurity state.  In testing procedure, the battery voltage, discharge current, discharge time and discharged capability will display on the front panel (See photo section)
• External analog test: Analog control interface is to meet industrial control requirements.  When there’s no need to use PC controlling, user can control through PLC.  The IT8900 Series can control load voltage or current through the analog interface at the rear panel, to analog 0-full scale input range by connecting to 0-10V adjustable voltages, so as to adjust load’s input voltage and current values
• Automatic Test: The IT8900 Series have a very powerful automatic test function.  The automatic test function is useful for simulating various tests and allows the user to edit up to 10 groups of testing files.  It helps engineers test out all kinds of data of the tested power supply at different loading status.  Automatic test function can edit multiple product tests such as CC, no-load, short-circuit, CV, so it can finish all test by one time. It makes tests convenient and fast, and to ensure high efficiency and testing accuracy
• Power off memory function: The IT8900 Series can save 100 groups of frequently testing data in non-volatile memory device, which makes it convenient for users to recall the data.  The IT8900 Series provide power off memory to guarantee that the long-term testing result data can be saved well when there’s abnormal power-off or computer crash.  Once the system is back to normal, the program can continue staring from the fault point.  This function can avoid repeated tests, thus to improve testing efficiency.  When it remains under power-off status, the IT8900 Series will automatically stop working, making test safe and reliable
• Remote sense: When working in CC, CV, CP and CR mode, if the electronic load consumes a very large current, it will cause a voltage drop in the leads between the connected device and terminals of the electronic load. In order to ensure testing accuracy, the electronic load provides a pair of remote sensing terminals in the rear panel where users can sense the output terminal voltage of the connected device.  Users should set the electronic load in REMOTE SENSE mode before using this function.  By eliminating the effect of the voltage drop in the load leads, remote sensing provides greater accuracy by allowing the electronic load to regulate directly at the source’s output terminals
• VISA, USBTMC and SCPI communication protocol supported