Chroma 63004-150-60 DC Electronic Load

The Chroma 63004-150-60 programmable DC electronic load is an reliable, precision instrument primarily designed to test switching power supplies, A/D power supplies, power electronic components, adapters, 3C batteries and chargers. Its maximum 250W rated power makes it suitable for testing numerous types of lower power devices.

The Chroma 63004-150-60 offers operating voltage 150V models with 250W power levels up to 40A in a single unit. Their compact and light weight design make these loads easy to move around which is ideal for R&D and design validation.

The Chroma 63004-150-60 has a unique user-defined waveform (UDW) function capable of simulating real-world custom waveforms. In addition, a data storage function has been built in for saving and recalling up to 100 stored settings at any time. For automated testing, these save and recall functions can save a great deal of time.

The Chroma 63004-150-60 has 3 power ranges that can precisely measure the voltage and current in real time. Since short circuit testing is a critical test item, the 63003-150-40 provides short circuit simulation to effectively address application demands for power and automated testing.

The 63004-150-60 loads offer versatile front panel operation through the LCD and rotary knob. For remote operation, users are able to control each model via standard USB or optional Ethernet and GPIB interfaces. PWM fan speed control has been embedded to reduce ambient noise.

The 63004-150-60 has been equipped with over current, overpower, and over temperature protections as well as over voltage and polarity reverse alarms to improve product reliability. These DC loads are reliable, precision instruments ideal for design validation testing and automated test system integration.

Static Load

Dynamic Load

• Programmable parameters: current high/low level, T1/T2, rise/fall rate and execution times
• Execution time setting range is 1 ~ 65,535
• 150V model’s current rise minimum response time is 20µs
• Suitable for testing D/D converters
• One shot impulse current is loaded when it is set to execute once, which is very suitable for testing instant large withstand current of batteries

CZ Mode

To avoid charging the motherboard capacitors when the switching power supply turns on with the surge current (triggering the power supply over current protection mechanism causing a the power supply fail to turn on successfully), a turn on capacitive load test is required. The 63000 series provides CZ mode for turn on capacitive load simulation to tackle this testing demand. CZ mode simulates the actual inductance, impedance and capacitance for loading making the load current closer to real conditions.

Three Ranges and High Precision Measurement

• High, medium, and low three operating and measurement ranges
• Voltage, current and power measurement specifications:

– 0.02%+0.02%F.S. accuracy for voltage

– 0.05%+0.05%F.S. accuracy for current

– 0.1%+0.1%F.S. accuracy for power

User-Defined Waveform (UDW)

The conventional way of loading a current waveform is through DAQ cards or function generators. The 63000 Series provides an enhanced feature, User Defined Waveform (UDW), to simulate the actual current profiles and waveforms. Each load is capable of storing up to 10 sets of waveforms with each containing up to 1.5 million data points in the built-in flash memory. It also provides voltage peak measurement during actual loading conditions avoiding the need for an oscilloscope which saves time and cost.

Battery Discharge Testing

• Configures three discharge modes: CC, CR, and CP
• Set cut off voltage and time (1~100,000 sec.) to stop loading and ensuring the battery is not damaged due to over discharge
• Measures the battery discharge power (WH, AH) and total discharge time
• Applies to super capacitor for discharge time testing and other related applications

Program Sequence

The 63000 series have program sequence functions for various load condition simulations; the minimum dwell time is 100µs. The following lists the applications for commonly programmed sequences:

1. Battery discharge (NPC, electric car, and electric locomotive, etc.) simulating various dynamic load current waveforms
2. Switching power supply mixed load modulation

User-defined Hot Key Design

• 5 sets of user-defined hot keys
• Quick access of the operation mode

Over Current & Over Power Testing

The over-current and over power functions can be used to verify whether OCP/OPP of the power supply is triggered or not.

• Set current orders to test overcurrent protections
• Set power orders to test overpower protections
• Automatically determine the test result as Pass or Fail
• Capture the maximum power (Pmax) during testing
• Verify the correctness of designed overcurrent and overpower without using an oscilloscope
• Save a lot of testing time

Graphical Operation Software

User friendly software controls all functions of the 63000 loads and is easy to understand and operate. The 63000 series can be controlled via standard USB or optional GPIB/Ethernet interface for remote control and automated testing applications

For more information: Chroma

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