GB/T 38833-2020 in English
VALID240V/336V DC power system technical requirements and test methods for information and telecommunication
- Issued on:2020-06-02
- Implemented on:2020-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$262.00
| Standard No: | GB/T 38833-2020 |
| Document status: | VALID |
| Title in English: | 240V/336V DC power system technical requirements and test methods for information and telecommunication |
| Title in Chinese: | 信息通信用240V/336V直流供电系统技术要求和试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-06-02 |
| Implemented on: | 2020-12-01 |
| ICS Classification: | 29.200-Rectifiers. Convertors. Stabilized power supply |
| Chinese Classification: | M41-Telecommunication power supply equipment |
| Professional Classification: | GB-National Standard |
| Related Keywords: | dc power system
dc power supply system technical requirements complete technical system performance requirements |
| Related Topics: | GB 38833
GBT38833 GB/T 38833-2020 Technical standards and methods for acceptance of information systems General technical requirements and test methods for black chrome plating Dual DC power supply wiring method |
《GB/T 38833-2020信息通信用240V/336V直流供电系统技术要求和试验方法》由TC485（全国通信标准化技术委员会）归口，主管部门为工业和信息化部（通信）。
Introduction
Analysis of the core content of the standard
This standard specifies the complete technical system of the 240V/336V DC power supply system in the field of information and communication, including the performance requirements of key components such as rectifier and battery pack. The system adopts a suspended working mode, and the maximum capacity is limited to 2400A.
Comparison of key technical indicators
| Parameters | 240V system | 336V system | Test conditions |
|---|---|---|---|
| Output voltage range | 192-288V | 260-400V | Power receiving terminal |
| Rectifier efficiency (Class I) | ≥94% | ≥94% | 100% load |
| System efficiency (Class I) | ≥93% | ≥93% | 100% load |
| Insulation alarm threshold | 28kΩ | 38kΩ | Default value |
Typical application scenarios
Data center case:A cloud computing center uses a 336V system and is equipped with 168 2V lead-acid batteries. It achieves 99.999% availability through a dual system redundant architecture. The system's measured efficiency is 94.2%, which is 8% more energy-efficient than traditional solutions.
5G base station case:Distributed base stations use a 240V system. The sleep function turns off 40% of the rectifier modules when lightly loaded, saving about 15,000kWh of electricity per year.
Implementation recommendations
- Give priority to Class I equipment (power factor ≥ 0.99, THDi ≤ 5%) to improve power quality
- It is recommended to configure the battery pack with temperature compensation function, with a compensation coefficient of -3mV/℃ to -7mV/℃
- New systems should reserve 20% capacity redundancy, and the rectifier should adopt N+1 configuration
- Periodically test the insulation monitoring device to ensure the sensitivity of ground fault detection
Technology evolution analysis
Compared with the previous generation of specifications, this standard has three major breakthroughs:
1) Added 336V voltage level to adapt to the development trend of high voltage DC
2) Clarified the requirements for sleep function to respond to the needs of green data centers
3) Strengthened electromagnetic compatibility indicators to meet the anti-interference requirements of the 5G era
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