5 Installation and Connection
(continued)
5-2
C232-302-401/402/403/404-603 / C232/EN M/A23
5.3 Location Requirements
The C232 has been designed to conform to EN 60255-6. Therefore it is important when
choosing the installation location to make sure that it provides the conditions specified in
the chapter entitled 'Technical Data'. Several important conditions are listed below.
Environmental Conditions
Ambient temperature
: -5 °C to +55 °C [+23 °F to +131 °F]
Air pressure
: 800 to 1100 hPa
Relative humidity:
The relative humidity must not result in the formation of
either condensed water or ice in the C232.
Ambient air
: The ambient air must not be significantly polluted by dust,
smoke, gases or vapors, or salt.
Solar radiation:
Direct solar radiation on the front of the device must be
avoided to ensure the readability of the LCD display.
Mechanical conditions
Vibration stress:
10 to 60 Hz, 0.035 mm and 60 to 150 Hz, 0.5 g
Earthquake resistance:
5 to 8 Hz, 3.5 mm / 1.5 mm, 8 to 35 Hz, 5 m/s
2
, 3 x 1 cycle
Electrical conditions for
auxiliary voltage for the
power supply
Operating range:
0.8 to 1.1 V
A,nom
with a residual ripple of up to 12 % V
A,nom
Electromagnetic conditions
Appropriate measures taken in substations must correspond to the state of the art (see,
for example, the VDEW ring binder entitled "Schutztechnik" [Protective Systems],
Section 8, June 1992 edition, which includes recommended measures for reducing
transient overvoltage in secondary lines in high voltage substations).
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