The PSR250-12A and PSR250-12A1 power modules support AC and high-voltage DC inputs. They
can provide a maximum output of 250 W. The PSR250-12A provides power module-side intake and
port-side exhaust airflows, and the PSR250-12A1 provides port-side intake and power module-side
exhaust airflows.
PSR250-12A
和
PSR250-12A1
均是交流或高压直流输入、直流输出的电源模块；最大输出功率可达
250W
。两款电源模块的区别是：
PSR250-12A
是电源侧进风，端口侧出风的吹风电源模块；
PSR250-
12A1
是端口侧进风，电源侧出风的抽风电源模块。
Functions
功能简介
Technical specifications
电源模块规格
The power module provides the following features:
电源模块特点：
Self-protection
—The power modules provide output overvoltage, output current limiting, output short
circuit, overtemperature, and input undervoltage protections. See the following table for the protection
and auto-recovery features of the power modules.
支持保护功能—支持输入过流保护、输出限流保护、输入欠压保护、输出过压保护、输出短路保护、过温
保护等功能。
Redundancy
—Two power modules can be connected in parallel to achieve 1+1 redundancy and load
sharing.
支持冗余备份—支持双电源模块并联工作，以实现电源系统
1+1
备份，并且备份电源间具有负载均流功能。
Hot swapping
—You can remove one of the two power modules in 1+1 redundancy while the device is
operating.
支持热插拔—在设备正常工作的情况下，可对
1+1
冗余备份电源系统中的某个电源模块进行插拔操作。
H3C PSR250-12A & PSR250-12A1 Power Modules User Manual-6PW105
H3C PSR250-12A & PSR250-12A1
电源手册
-6PW105
BOM: 3101A0MW
Whether the power module supports high-voltage DC input depends on the device model. For
information, see hardware information and specifications for the device.
电源模块应用于不同设备上时，是否支持高压直流输入与设备型号有关，具体支持情况请参见设备配
套硬件描述。
Item
项目
Specifications
规格
AC input
交流输入
Rated input voltage
额定输入电压范围
100 to 240 VAC @ 50 or 60 Hz
High-voltage DC input
高压直流输入
Rated input current
额定输入电流
4 A
Output voltage
输出电压
Max input voltage
最大输入电压范围
90 to 290 VAC @ 47 to 63 Hz
Output current
输出电流
Max input current
最大输入电流
5 A
Max output power
最大输出功率
Rated input voltage
额定输入电压范围
240 VDC
Rated input current
额定输入电流
Max input voltage
最大输入电压范围
Max input current
最大输入电流
2 A
180 to 320 VDC
2.5 A
Dimensions (H × W × D)
外形尺寸（高
×
宽
×
深）
Operating temperature
工作环境温度
Relative humidity
相对湿度
12 V/3.3 V
20.9 A (12 V)/2 A(3.3 V)
250 W
40.2 × 50.5 × 221 mm (1.58 × 1.99 × 8.70 in)
–10°C to +55°C (14°F to 131°F)
5% to 95%
Protection function
保护功能
Protection state
保护状态特征
Support for auto-recovery
恢复特性
Output overvoltage
protection
输出过压保护
The power module does not
supply power, and the power
module status LED is steady red.
无输出，指示灯红灯常亮
No. Power supply can restore only
when you reconnect the power cord
to the power source.
故障排除后，重新插拔输入线缆电源
可恢复，指示灯绿灯常亮
Output current
limiting protection
输出限流保护
The power module does not
supply power, and the power
module status LED is steady red.
无输出，指示灯红灯常亮
Power supply restores after the output
current decreases to an acceptable
range
.
故障排除后可自恢复，指示灯绿灯常亮
Output short circuit
protection
输出短路保护
The power module does not
supply power, and the power
module status LED is steady red.
无输出，指示灯红灯常亮
Power supply restores after the short
circuit problem is resolved.
故障排除后可自恢复，指示灯绿灯常亮
Overtemperature
protection
过温保护
The power module does not
supply power, and the power
module status LED is steady red.
无输出，指示灯红灯常亮
Power supply restores after the output
current decreases to an acceptable
range
.
故障排除后可自恢复，指示灯绿灯常亮
Input undervoltage
protection
输入欠压保护
The power module does not
supply power, and the power
module status LED is flashing red.
无输出，指示灯红灯闪烁
Power supply restores after the output
current decreases to an acceptable
range
.
故障排除后可自恢复，指示灯绿灯常亮
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