Service Conditions - Siemens SIPROTEC 7SS522 V4.6 Manual

9.2.17 Service Conditions

The relay is designed for use in industrial environment, for installation in standard re-
lay rooms and compartments so that with proper installation electro-magnetic compat-
ibility (EMC) is ensured. The following should also be heeded:
• All contactors and relays which operate in the same cubicle or on the same relay
• All external connection leads in substations from 100 kV upwards should be
• Individual modules must not be withdrawn or inserted under voltage. In withdrawn
9.2.18 Design Versions
Central unit SIPAC subrack
Terminals
Bay unit Housing (7XP20)
– with window pane front
– without window pane front
Terminals
Degree of protection acc. to EN 60529
Weight Weight at maximum configuration
Central unit
– SIPAC subrack
Bay unit
– flush-mounted
– surface-mounted
Dimensions See dimensional drawings, Chapter 9.3, page 329
1)
7SS52 V4 Manual
C53000-G1176-C182-3
panel as the digital protection equipment should, as a rule, be fitted with suitable
spike quenching elements.
screened with a screen capable of carrying power currents and earthed at both
sides. No special measures are normally necessary for substations of lower voltag-
es.
condition, some components are electrostatically endangered; during handling the
EEC standards (standards for electrostatically endangered components) must be
observed. The modules are not endangered when plugged in.
Values in brackets [ ] for Bay unit 7SS525
General Device Data
IP 20
IP 21
IP 51
1)
IP 30 [IP 20]
IP 21
14,3 kg
1)
8.1 kg [5,5 kg]
1)
11.8 kg [not available]
327