Service Conditions; Constructive Design - Siemens 7SC80 Manual

Storage and transport in factory packaging
1) The CR2032 lithium battery is installed by default and is approved for –30 °C to +70 °C.
2) Above +55 °C the legibility of the display can be impaired.
3) When the optional extension board is used in 7SC803 devices, it is not permitted to operate the device at
the max. ambient temperature in one of the following cases:
•
All binary inputs are active simultaneously on an auxiliary voltage > 150 V.
•
All binary outputs are used with currents > 1A permanently.
Otherwise the allowed temperature within the device is exceeded. To avoid such excess, the max. ambient
temperature must be reduced to 50 °C for the permanent operation.
Humidity
Permissible humidity
Siemens recommends installing the devices in a place where they are not exposed to direct sunlight or great
temperature variations that could lead to condensation.
If condensation is anticipated, the control cabinet into which the 7SC80 is installed must be equipped
with a cabinet heating.
4.1.8

Service Conditions

The device is designed for installation in standard relay rooms and compartments so that the electromagnetic
compatibility (EMC) is ensured when the device is installed correctly.
Siemens also recommends:
•
All contactors and relays that operate in the same cabinet or on the same relay panel as the digital
protection devices must generally be equipped with suitable surge suppression components.
•
For substations with operating voltages of 100 kV and above, all external cables must be shielded with a
conductive shield grounded at both ends. For substations with lower operating voltages no special
measures are normally required.
•
Do not withdraw or insert individual modules while the protection device is energized. When handling
modules outside the housing, the standards for components sensitive to electrostatic discharge
(Electrostatically Sensitive Devices) must be observed. There is no risk in the installed condition.

Constructive Design

4.1.9
Dimensions
Device
7SC80
HMI
Degree of protection in acc. with IEC 60529
For equipment in surface-mounting housing or flush-
mounting housing
For operator protection
for the HMI
Degree of pollution, IEC 60255-27
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
Mean value per year ≤ 75 % relative humidity;
on 30 days of the year up to 95 % relative humidity;
condensation must be avoided!
Housing
For panel flush mounting and panel surface mounting 3.6 kg
See dimensional drawings, Section
IP 40
IP 2x for current terminal
IP 2x for voltage terminal
IP 51
2
Technical Data
4.1 General Device Data
4.26 Dimensions
Weight
1.1 kg
507