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Technical Data
9.5
Service conditions
The relay is designed for use in industrial environment, for installation in standard relay rooms and
compartments so that with proper installation electro-magnetic compatibility (EMC) is ensured. the following
should also be heeded:
• All contactors and relays which operate in the same cubicle or on the same relay panel as the digital
protection equipment should, as a rule, be fitted with suitable spike quenching elements.
• All external connection leads in substations from 100 kV upwards should be screened with a screen
capable of carrying power currents and earthed at both sides. No special measures are normally
necessary for substations of lower voltages.
• It is not permissible to withdraw or insert individual modules under voltage. In the withdrawn condition.,
some components are electrostatically endangered; during handling the standards for electrostatically
endangered components must be observed. The modules are not endangered when plugged in.
9-14
Warning!
The device is not designed for used in residential environment as defined in EN 50081.
7SS60 Manual
E50417–G1176–C132–A2
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