GE Multilin D400 Instruction Manual page 26

Environmental
Software
26
Figure 4: D400 dimensions
Operating temperature −20 °C to +65 °C
Maximum ambient temperature is +50 °C for unit to fully comply with IEC
61010-1 Section 10.1 regarding surface temperature limits for protection
against burns.
The top cover of the D400 can get hot during peak operation. Ensure
that there is at least 1U (1.75 inch [44.45 mm]) of free space above the
D400 unit for proper ventilation.
When the unit is operating above 50 °C ambient temperature, safe
handling precautions are recommended to prevent burns.
Humidity rating 5% to 95% relative humidity, non-condensing
Environmental rating Ingress protection: IP30 (IEC 60529)
Installation / CAT II (2)
overvoltage category
Pollution degree 2
Use Indoor use only
Altitude Maximum altitude 6,560 ft [2000 m]
MTBF (MIL-217F) 39,400 hours at 40 °C in a fully loaded single Ethernet configuration
Noise 0 dB(A)
Firmware Supports various IED and host protocols as well as web-based user
interface and secure access
Human machine Built-in graphical user interface (Web browser-based)
interface
Configuration Built-in graphical user interface (Web browser-based)
GE INFORMATION
CHAPTER 1: BEFORE YOU START
D400 SUBSTATION GATEWAY INSTRUCTION MANUAL