The ORV3 (Open Rack Version 3) Power Shelf delivers up to 33kW of high-density power output in a compact 1OU form factor. Designed specifically for data centers and large-scale server architectures, power shelves centralize power management and distribution by delivering electricity to IT equipment through a common bus bar in an open rack configuration. They support high-efficiency converters (such as 80 PLUS certified units) to minimize energy loss. Power shelves also feature redundant designs, ensuring stable system operation and enhanced reliability even when individual PSU modules fail and are hot-swapped for replacement.
Key Features
Chroma's Server Power Shelf Automated Test System is a customized solution built on the Chroma 8000 ATS platform, specifically designed for automated testing and validation of server power shelves. Paired with Chroma 61800, 63200A, 62000D, 63700 series and other regenerative test equipment, the system enables comprehensive testing of server power shelf input characteristics, output performance, protection features, and PMBUS communication. Unlike traditional automated test software, the software included in this system requires only minimal setup: simply define the test conditions and specifications, and automated testing can begin. Test reports are generated instantly upon completion for maximum efficiency.
Server Power Conversion Device Test Items and Specifications
The diagram below illustrates the power architecture of a data center server system, with Power Supply Units (PSUs) functioning as the system's power core. The ORV3 specification allows for up to six PSUs to be connected in parallel within a single power shelf, primarily used to provide centralized power management and distribution for multiple servers. Its main functions include power supply, redundancy, hot-swapping capability, and power condition monitoring. Under the testing guidelines of OCP ORV3, high reliability and compatibility requirements must be met.
Chroma's server power testing solutions can be programmed with automated test items and procedures according to the specifications of the ORV3 testing guidelines. This enables effective evaluation of the performance and reliability of server power supplies in real-world applications, ensuring they meet high operational standards. The test items cover output performance testing to assess the general performance of the server power supply, input characteristics testing to evaluate the input parameters of the power supply, regulation testing to examine output stability under varying input power and load conditions, timing and transient testing to measure the timing of power-on/off and various events, protection testing to trigger the power supply's protection circuits and functions, and PMBus communication testing of server power status parameters.
For prolonged burn-in testing, the system can be configured with the Chroma 63700 regenerative DC electronic load. This allows the energy output during the test to be fed back to the grid, reducing overall power consumption and aligning with sustainability goals such as carbon neutrality and green manufacturing.
Output Performance
- Output current
- Peak-to-peak noise
- Efficiency
- Overshoot voltage
- No-load startup
Input Characteristics
- Inrush current
- Power factor
- Input current harmonic
- Input frequency ramp-up/down
- Input voltage distortion simulation
Regulation Testing
- Output stability under varying loads
- Stability under input voltage variations
- Comprehensive regulation testing
Timing and Transient Testing
- Power-on/off timing
- Rise/fall time
- Dynamic load response
- 160% surge load
- Protection timing
Protection Testing
- Over Voltage Protection (OVP) testing
- Under Voltage Protection (UVP) testing
- Over Current Protection (OCP) / Over Power Protection (OPP)
- Short Circuit Protection (SCP) testing
Other Tests
- PMBus communication (CAN)
The specifications for server power shelves cover a wide range. Chroma’s comprehensive portfolio of test & measurement equipment ensures an automated test system can be tailored to meet specific product specs and testing needs. Our ORV3 Power Shelf test architecture and equipment recommendations are as follows:
The Chroma 8000 test system includes PowerPro, Chroma's widely adopted power supply testing software platform. PowerPro provides an open software framework that allows users to freely select test hardware, develop their own test programs, automate pass/fail judgments, and conveniently generate reports.
The Chroma 8000 is fully compatible with all relevant device drivers and control commands. When users need to replace test hardware due to upgraded product specifications, the programmed test items and procedures can be reused without modifying the code, allowing seamless interchangeability of ATE equipment. Chroma’s deep expertise in power testing also means reliable technical support and consulting, which helps customers manage changes in test personnel without affecting the maintainability of the test platform.
▲ Chroma 8000 ATS Main Panel
▲ Test Execution (GO/NO GO) Screen
▲ Test Report
