Introducing the GW Instek PEL-3000A/3000AH Series: Programmable DC Electronic Loads

The PEL-3000A series, a single-channel, programmable D.C. electronic load with 0.01 mA current resolution and 16 A/μs current Slew Rate, is very ideal for testing SPS (Switching Power Supply) for commercial and industrial computers. For a heavy-duty device like cloud ecosystem running 24-hour nonstop operations, a stable and high-power power supply, ranging from 175 W to 1050 W, is required to maintain the normal operation of server, Hub, and the equipment of data storage and internet communications.

Owing to the increasing demand of data transmission and large scale data storage of telecommunications systems, the infrastructure of internet communications is in the pace of rapid expansion. This has greatly boosted the market demand of telecommunications equipment powered by power supply of 2000 W and above. The flexible power combination of PEL-3000A meets the test requirements of present high-power power supply.

The PEL-3000AH programmable DC Electronic load, which not only inherited functions and features from the PEL-3000A series but providing three current ranges for all PEL-3000AH series and adding voltage monitor BNC terminals on the front panel. The PEL-3000AH series, a single-channel, programmable D.C. electronic load with 800 V and 0.84 A/μs current Slew Rate, is ideal for the test of the high voltage devices such as the EV & HEV in-vehicle chargers, DC/DC converters or high-voltage batteries.

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Product Features:

• Operating voltage (DC): 0 V to 150 V (PEL-3000A) / 0 V to 800 V (PEL-3000AH)
• Operating Mode: CC / CV / CR / CP / CC+CV / CR+CV / CP+CV
• Parallel Connection of Inputs for Higher Capacity (Max : 9,450 W)
• Support of High Slew Rate: Max. 16 A/μs (PEL-3000A) / 0.84 A/μs (PEL-3000AH)
• Run Program Function (GO/NO GO Test)
• Sequence Function for High Efficient Load Simulations
• Dynamic(Switching) Function: 0.0166 Hz to 20 kHz
• Soft Start Function: Off / On (1 ms to 200 ms, Res: 1 ms)
• Adjustable OCP / OVP / OPP / UVP Setting
• Short Circuit Function
• Timer function: Elapsed Time of load on
• Cut Off Time (Auto Load Off Timer): 1s to 999h 59min 59s or Off
• External Channel Control / Monitoring via Analog Control Connector
• Setup Memories: 100 sets
• 3.5" TFT LCD Display
• Multi Interface: USB 2.0 Device / Host, RS-232, LAN, GPIB (Optional)

Flexible Power Combinations, High-Speed and Versatile Load Simulations

The flexible power combination of PEL-3000A Series meets the test requirements of present high-power power supply. The PEL-3000AH Series programmable DC Electronic load, which not only inherited functions and features from the PEL-3000A Series but providing three current ranges for all PEL-3000AH Series and adding voltage monitor BNC terminals on the front panel. The PEL-3000AH Series, a single-channel, programmable DC electronic load with 800 V and 0.84 A/ s current Slew Rate, is ideal for the test of the high voltage devices such as DC/DC converters or high-voltage batt μ eries. With respect to battery testing applications such as rechargeable battery for electrical tools, battery module and automobile battery, PEL-3000A(AH) Series has three stand-alone models to offer including 175 W, 350 W, 1050 W and Booster. By connecting Booster 2100 W units with master units, the maximum load capacity of the whole system can reach 9,450 W. Hence, the PEL-3000A(AH) Series fulfills various power testing requirements including medium to low power or high-power power supply.

The PEL-3000A(AH) Series has seven operating modes and three operating functions. Among the seven operating modes, four of them are basic operating modes, including constant current, constant voltage, constant resistance, and constant power, and the other three are advanced operating modes including constant current + constant voltage, constant resistance + constant voltage, and constant power + constant voltage. Users must first select operating mode and then operating function based upon the test requirements. Static, Dynamic and Sequence operating functions can be applied to different testing conditions including a fixed load level, switching between two levels or switching among more than two levels. Sequence function is divided into Fast Sequence and Normal Sequence according to the test time of each step. Both Dynamic and Sequence are to assist users to simulate the genuine load change. For instance, PEL-3000A(AH) Series can simulate HEV current consumption to make sure that automobile battery can supply HEV with sufficient power need on the road. By so doing, manufacturers can elevate product quality and reliability.

The Soft Start function of the PEL-3000A(AH) Series can set current rise time for the moment PEL-3000A(AH) Series is turned on to reduce the abnormal situation of the voltage drop of power supply under test. The adjustable Under Voltage Protection (UVP), GO/NO GO voltage input monitoring function, current monitoring function and Timer Function to control load activation time can be jointly applied to the characteristic tests of battery bleeding to avoid battery damage during bleeding operation. Based upon the functionalities described above, the PEL-3000A(AH) Series can test a vast variety of power supply ranging from the fundamental static sink current to complex dynamic load simulations so as to enhance product quality and reliability.

Product Model Selections

PEL-3000A/AH series is available in eight models and the main differences are shown in the following table: