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4.1.8
Deployment Conditions
The protection device is designed for installation in normal relay rooms and plants, so that electromagnetic immunity
is ensured if installation is done properly.
In addition the following is recommended:
• Contacts and relays operating within the same cabinet or on the same relay board with digital protection equipment,
should be in principle provided with suitable surge suppression components.
• For substations with operating voltages of 100 kV and above, all external cables shall be shielded with a conductive
shield earthed at both ends. For substations with lower operating voltages, no special measures are normally re-
quired.
• For substations with lower operating voltages, no special measures are normally required. When removed, many
components are electrostatically endangered; when handling the EEC standards (standards for Electrostatically
Endangered Components) must be observed. The modules, boards, and device are not endangered when the
device is completely assembled.
4.1.9
Construction
Housing
Dimensions
Variant
7VK610
7VK611
Protection class acc. to IEC 60529
For surface mounting housing equipment
For equipment of the flush-mount housing
Front
Rear
For personnel protection
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
7XP20
See dimensional drawings, Section 4.10
Housing
in flush mounting housing
in surface mounting housing
in flush mounting housing
in surface mounting housing
Size
1
/
3
1
/
3
1
/
2
1
/
2
IP 51
IP 51
IP 50
IP 2x with cover in place
Technical Data
4.1 General
Weight (for maximum
number of compo-
nents)
5 kg / 11.02 Ib
9.5 kg / 20.94 Ib
6 kg / 13.23 Ib
11 kg / 24.24 Ib
239
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