Environmental
phenomena
Basic
standard
Description
Test levels
Temperatures
EN 60068-2-1
EN 60068-2-2
Operational
-40 to +70°C (-40 to +158°F)
ab
Storage and
transport
-55 to +85°C (-67 to +185°F)
Humidity
EN 60068-2-30
Operational
5-95% relative humidity
Storage and
transport
Altitude
Operational
2000 m
Service life
Operational
20 years according to IEC/TR 62380
MTBF
1: MIL-
HDBK-217F-
N2, GB,
+25°C/ +77°F
2: IEC 62380
Viper-208-T4G-TBN: 1: 460,000 h, 2:
598,000 h
Viper-208-T8G-TBN: 1: 360,000 h, 2:
564,000 h
Vibration
IEC 60068-2-6
(sine)
Operational
5 sweeps cycles:
7.5 mm 5-8 Hz
2g, 8-500 Hz
IEC
60068-2-64
(random)
Non-operational
long life
simulation
11.44 m/s² rms 5-150 Hz, 5 hours
20 m/s² rms 5-150 Hz, 30 min operational
Shock
IEC
60068-2-27
Operational
10 g, 30 ms, half sine
20 g, 11 ms, saw tooth
Weight
1.5 kg
Degree of protection
IEC 60529
Enclosure
IP67, no ingress of dust and protection
against water immersion up to 1 m. Also
passes IP66 tests.
c
Cooling
Convection
Overvoltage
category
EN/IEC
61010-1
OVC II
Pollution degree
EN/IEC
61010-1
PD3 macro environment and PD2 micro
environment
d
EN 50124-1
PD2
Location
EN/IEC
61010-1
Outdoor, wet locations
IEEE 1478
Class 1, condition E4. Indoor
a
Refer to "Safety and Regulations" chapter regarding touch temperature
b
Operational at +85°C for a limited time
c
Provided all connectors are connected with IP66 and IP67 cablings or fitted with protective caps (delivered with
the unit) and tightened to the specified torque.
d
Installation and maintenance shall be made under controlled environments.
Table 13. Environmental and mechanical conditions
24
Viper-208-TBN Series
