Lenovo ThinkSystem SR550 Setup Manual page 13

Table 1. Server specifications (continued)
Specification
Electrical input
Environment
Description
• Sine-wave input (50–60 Hz) required
• 550-watt ac and 750-watt ac Platinum input voltage range:
– Low range: 100–127 V ac
– High range: 200–240 V ac
• 750-watt ac Titanium input voltage range: 200–240 V ac
CAUTION:
1. 240 V dc input (input range: 180-300 V dc) is ONLY supported in Chinese
Mainland.
2. Power supplies with 240 V dc are not hot-swappable. To remove the power
cord, ensure you have turned off the server or disconnected the dc power
sources at the breaker panel.
3. In order for the ThinkSystem products to operate error free in both a DC or
AC electrical environment, a TN-S earthing system which complies to
60364-1 IEC 2005 standard has to be present or installed.
ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning
Engineers).
Note: This server is designed for standard data center environment and
recommended to be placed in industrial data center.
• Air temperature:
– Operating:
– ASHRAE class A2: 10–35°C (50–95°F); when the altitude exceeds 900 m
(2953 ft), the maximum ambient temperature value decreases by 1°C (1.8°F)
with every 300 m (984 ft) of altitude increase.
– ASHRAE class A3: 5–40°C (41–104°F); when the altitude exceeds 900 m
(2953 ft), the maximum ambient temperature value decreases by 1°C (1.8°F)
with every 175 m (574 ft) of altitude increase.
– ASHRAE class A4: 5–45°C (41–113°F); when the altitude exceeds 900 m
(2953 ft), the maximum ambient temperature value decreases by 1°C (1.8°F)
with every 125 m (410 ft) of altitude increase.
– Server off: 5–45°C (41–113°F)
– Shipping or storage: -40–60°C (-40–140°F)
• Maximum altitude: 3050 m (10 000 ft)
• Relative humidity (non-condensing):
– Operating:
– ASHRAE class A2: 8%–80%; maximum dew point: 21°C (70°F)
– ASHRAE class A3: 8%–85%; maximum dew point: 24°C (75°F)
– ASHRAE class A4: 8%–90%; maximum dew point: 24°C (75°F)
– Shipping or storage: 8%–90%
• Particulate contamination
Attention: Airborne particulates and reactive gases acting alone or in
combination with other environmental factors such as humidity or temperature
might pose a risk to the server.
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Chapter 1 Introduction
9